GB2148912A - Gaskets for use in pressurised dispensers - Google Patents
Gaskets for use in pressurised dispensers Download PDFInfo
- Publication number
- GB2148912A GB2148912A GB08328927A GB8328927A GB2148912A GB 2148912 A GB2148912 A GB 2148912A GB 08328927 A GB08328927 A GB 08328927A GB 8328927 A GB8328927 A GB 8328927A GB 2148912 A GB2148912 A GB 2148912A
- Authority
- GB
- United Kingdom
- Prior art keywords
- parts
- constituted
- gasket
- butyl
- gasket material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims abstract description 32
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 16
- 239000000460 chlorine Substances 0.000 claims abstract description 10
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 10
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 9
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims abstract description 9
- 229920005549 butyl rubber Polymers 0.000 claims abstract description 9
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000002904 solvent Substances 0.000 claims abstract description 5
- 239000001273 butane Substances 0.000 claims abstract description 3
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 claims abstract description 3
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000007800 oxidant agent Substances 0.000 claims abstract description 3
- 230000001590 oxidative effect Effects 0.000 claims abstract description 3
- 239000001294 propane Substances 0.000 claims abstract description 3
- 239000003380 propellant Substances 0.000 claims abstract description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 18
- 239000006229 carbon black Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 239000011787 zinc oxide Substances 0.000 claims description 9
- 235000021355 Stearic acid Nutrition 0.000 claims description 8
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 8
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 8
- 239000008117 stearic acid Substances 0.000 claims description 8
- 229920001568 phenolic resin Polymers 0.000 claims description 7
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 6
- -1 polyethylene Polymers 0.000 claims description 6
- RHCFCHADDXGWJE-UHFFFAOYSA-N 1-chloro-3-methylbuta-1,3-diene Chemical compound CC(=C)C=CCl RHCFCHADDXGWJE-UHFFFAOYSA-N 0.000 claims description 4
- 239000005995 Aluminium silicate Substances 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 4
- 235000012211 aluminium silicate Nutrition 0.000 claims description 4
- 229920001577 copolymer Polymers 0.000 claims description 4
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 4
- 239000011777 magnesium Substances 0.000 claims description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 3
- 239000005662 Paraffin oil Substances 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 229920005556 chlorobutyl Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 3
- 239000002174 Styrene-butadiene Substances 0.000 claims description 2
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 2
- 235000019241 carbon black Nutrition 0.000 claims description 2
- 239000012188 paraffin wax Substances 0.000 claims description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000005011 phenolic resin Substances 0.000 claims description 2
- 239000011115 styrene butadiene Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 235000014692 zinc oxide Nutrition 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims 1
- 239000011701 zinc Substances 0.000 claims 1
- 229910052725 zinc Inorganic materials 0.000 claims 1
- 239000000443 aerosol Substances 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 239000005864 Sulphur Substances 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000000806 elastomer Substances 0.000 description 3
- RPJSGONHAGDAGQ-UHFFFAOYSA-N butane propane Chemical compound CCC.CCC.CCCC.CCCC RPJSGONHAGDAGQ-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- MMMNTDFSPSQXJP-UHFFFAOYSA-N orphenadrine citrate Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O.C=1C=CC=C(C)C=1C(OCCN(C)C)C1=CC=CC=C1 MMMNTDFSPSQXJP-UHFFFAOYSA-N 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- RKQOSDAEEGPRER-UHFFFAOYSA-L zinc diethyldithiocarbamate Chemical compound [Zn+2].CCN(CC)C([S-])=S.CCN(CC)C([S-])=S RKQOSDAEEGPRER-UHFFFAOYSA-L 0.000 description 2
- KGRVJHAUYBGFFP-UHFFFAOYSA-N 2,2'-Methylenebis(4-methyl-6-tert-butylphenol) Chemical group CC(C)(C)C1=CC(C)=CC(CC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O KGRVJHAUYBGFFP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 208000020442 loss of weight Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000002304 perfume Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 1
- 229940029284 trichlorofluoromethane Drugs 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
- C08L23/28—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment by reaction with halogens or halogen-containing compounds
- C08L23/283—Iso-olefin halogenated homopolymers or copolymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08L23/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
- C08L23/22—Copolymers of isobutene; Butyl rubber; Homopolymers or copolymers of other iso-olefins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2003/1034—Materials or components characterised by specific properties
- C09K2003/1053—Elastomeric materials
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2200/02—Inorganic compounds
- C09K2200/0204—Elements
- C09K2200/0208—Carbon
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2200/02—Inorganic compounds
- C09K2200/0239—Oxides, hydroxides, carbonates
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2200/02—Inorganic compounds
- C09K2200/0243—Silica-rich compounds, e.g. silicates, cement, glass
- C09K2200/0252—Clays
- C09K2200/026—Kaolin
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2200/04—Non-macromolecular organic compounds
- C09K2200/0405—Hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2200/04—Non-macromolecular organic compounds
- C09K2200/0447—Fats, fatty oils, higher fatty acids or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2200/06—Macromolecular organic compounds, e.g. prepolymers
- C09K2200/0607—Rubber or rubber derivatives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2200/06—Macromolecular organic compounds, e.g. prepolymers
- C09K2200/0607—Rubber or rubber derivatives
- C09K2200/061—Butyl rubber
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2200/06—Macromolecular organic compounds, e.g. prepolymers
- C09K2200/0615—Macromolecular organic compounds, e.g. prepolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09K2200/0617—Polyalkenes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2200/06—Macromolecular organic compounds, e.g. prepolymers
- C09K2200/0645—Macromolecular organic compounds, e.g. prepolymers obtained otherwise than by reactions involving carbon-to-carbon unsaturated bonds
- C09K2200/067—Condensation polymers of aldehydes or ketones
- C09K2200/0672—Phenol-aldehyde condensation polymers
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Sealing Material Composition (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention concerns material for an elastomeric sealing gasket for use in aerosol containers which contain products including at least one solvent of the group comprising water, methylene chloride, butane, propane and a propellant constituted at least partially by dimethylether. The material is constituted at least partly by a modified or unmodified butyl rubber vulcanised by an oxidant which is not sulphurised and in the absence of free chlorine.
Description
SPECIFICATION
Gaskets for use in pressurised dispensers
In gaskets made of rubber or rubber-like elastomeric materials and used in small hand-held dispensers of the kind commonly known as aerosols" (although they may well dispense products in a form other than an aerosol, e.g. a foam), it is a matter of importance to ensure that the material chosen for the gasket is compatible with the constituents of the mixture within the container. This is particularly true of the disc-like gasket used as the sealing surface against which the valve member engages.
Certain materials dispensed from pressurised containers include dimethylether, which has a marked tendency to attack the material of the gasket, not only damaging the gasket but also leading to resulting reaction products which attack and cause corrosion of the walls of the container.
The dimethylether extracts from the gasket the sulphurised and chlorinated components which, in aqueous solution, then attack the metal of the adjacent valve mounting cup, and possibly of the container itself. This attack manifests itself particularly in the region where the gasket is in contact with the inside of the mounting cup. The sulphur compositions are derived from the vulcanising agents present, whereas the chlorine is present as an integral part of the elastomer, for example chloroprene.
Attempts have been made to neutralise the free chlorine ions by the introduction of an excess of magnesium, and to replace the traditional sulphur-containing vulcanising agents with alternatives that are free of sulphur. These known solutions to the problem do restrict the degree of attack by the dimethylether, although without being totally effective.
Another drawback of the presence of dimethylether in the product is its tendency to diffuse through the normal kinds of gasket, resulting in a significant loss of weight over a long period of time.
The aim of the invention is to provide a gasket which is resistant to product mixtures that include dimethylether in conjunction with solvents such as water, methylene chloride, and hydrocarbons, and which presents a very low coefficient of extraction in relation to dimethylether and a coefficient of permeability to dimethylether which is significantly below that of the gaskets which are conventionally used in pressurised dispensing containers.
According to the invention an elastomeric gasket material for use in pressurised dispensers containing at least one solvent of the group comprising water, methylene chloride, butane, and propane, and having a propellant constituted at least partially by dimethylether is characterised by being constituted at least partly by a modified or unmodified butyl rubber vulcanised by an oxidant which is unsulphurised in the absence of free chlorine.
Such a gasket material could be constituted at least partially by a copolymer of butyl and isoprene.
Gaskets made of this material could contain at least one substance of the group comprising zinc oxide, stearic acid, carbon black, kaolin, paraffin, phenolic and phenol-formaldehyde resins, zinc diethyldithiocarbamate, polyethylene, styrene-butadiene and chlorobutyl.
They could equally well be constituted, at least partly, by a copolymer of butyl and chloroisoprene, and could include magnesium in a quantity at least equal to that necessary to neutralise the available chlorine in the gasket.
The mechanical properties of the rubber-butyl based elastomer are reinforced by copolymerisation with isoprene or chloroisoprene. This co-polymerisation significantly reduces the reactivity of the free chlorine in the case of chloroisoprene. The complimentary addition of magnesium furthermore allows neutralisation of the excess chlorine on top of its vulcanising action.
The permeability of the butyl rubbers modified in this way is very low, such as to justify their use in membranes for pneumatic containers for air.
The elastomeric gaskets according to the invention allow the production of valve assemblies of which the metallic mounting cup adapted to fit the neck of the container does not need any protection by varnish or lacquer apart from that used to counter any aggressivity of the product to be dispensed.
The invention will be better understood by reading the following description of several embodiments of the invention by way of example.
To produce gaskets according to the invention for aerosol valves with no free chlorine and no available sulphur, for containing dimethylether, one prepares a mixture of elastomers comprising predominantly 100 parts of butyl rubber, 1.5 of stearic acid, 5 parts of zinc oxide, 50 parts of carbon black, 10 parts of calcined kaolin, 7.5 parts of paraffin oil and 7 parts of active phenolic resin.
The above composition is mixed, shaped and vulcanised in accordance with the normal rules in this art, before being cut into gaskets of the required dimensions.
One can use such gaskets, without any particular precautions, and with excellent results, for ensuring the effective sealing of aerosols containing the following formulations: 1. Absolute ethyl alcohol 10%
Methylene chloride 15% 80/20 Butane-propane 10%
Dimethylether 65% 2. Absolute ethyl alcohol 30%
Methylene chloride 25%
Butane propane 80/20 20%
Dimethylether 25% 3. Water 27.8%
Dimethylether 50%
95% ethyl alcohol 20%
Bactericide (Softigen 767) 0.70%
Perfume 1 % Emulsifier (Grillonzin) 0.5% 4. Water 50%
Dimethylether 35%
Solvent 15% 5. Solution of capillary
lacquer in alcohol 20%
Isoproponol 10%
Trichloromonofluoromethane 30%
Dimethylether 40%
One could equally well produce elastomeric gaskets according to the invention with the following significant variations in composition: 1. Chlorobutyl rubber 100 parts
Carbon black 70 parts
Chalk white treated with
aliphatic acid calcium
salts (OMVA BSH) 20 parts
Polyethylene 5 parts
Zinc oxide 3 parts
Stearic acid 1 part
Phenol-formaldehyde resin
(Amberol) 0.5 parts 2. Butyl rubber 100 parts
Carbon black 60 parts
Petroleum oil (Flexon) 20 parts
Stearic acid 2 parts
Zinc oxide 5 parts 3. Butyl rubber 100 parts
Carbon black 60 parts
White mineral oil 5 parts
Stearic acid 1 part
Anti-oxidant 1 part
Zinc oxide 5 parts
Zinc diethyldithiocarbamate 1.5 parts 4. Butyl rubber 45 parts
Styrene-butadiene rubber 55 parts
Carbon black 40 parts
Paraffin oil 5 parts
Stearic acid 1 part
Zinc oxide 5 parts 5. 60/40 mixture of butyl 2/8
and butyl HT/68 100 parts
Carbon black 70 parts
Flexon petroleum oil 25 parts
Zinc oxide 5 parts
Claims (7)
1. An elastomeric gasket material for use in pressurised dispensers including at least one solvent of the group comprising water, methylene chloride, butane, propane and a propellant constituted at least partly by dimethylether, characterised by being constituted at least partly by a modified or unmodified butyl rubber vulcanised by an oxidant which is unsulphurised in the absence of free chlorine.
2. A gasket material according to claim 1 constituted at least in part by a copolymer of butyl and isoprene.
3. A gasket material according to claim 1 or claim 2 and including at least one substance of the group comprising zinc oxide, stearic acid, carbon black, kaolin, paraffin, phenolic and phenol-formaldehyde resins, zinc diethyldithiocarbaate, polyethylene, styrene-butadiene and chloro butyl.
4. A gasket material according to any one of claims 1 to 3, constituted at least in part by a copolymer of butyl and of chloroisoprene, and incorporating sufficient magnesium to neutralise the available chlorine contained in the gasket.
5. A gasket material according to any one of claims 1 to 4, constituted predominantly by a vulcanised mixture of substantially 100 parts of butyl rubber, 1.5 parts of stearic acid, 5 parts zinc oxide, 50 parts of carbon black, 10 parts of calcined kaolin, 7.5 parts of paraffin oil and 7 parts of phenolic resin.
6. A gasket material for use in pressurised dispensers substantially as described herein with reference to any of the examples.
7. A pressurised dispenser having a valve assembly incorporating a gasket made of the material of any of the preceding claims.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8215109A FR2532714A1 (en) | 1982-09-06 | 1982-09-06 | Elastomer seal for aerosol contg. solvent |
| IT22758/83A IT1168965B (en) | 1982-09-06 | 1983-09-02 | ELASTOMER SEALS FOR DIMETHYLETER-BASED AEROSOL PACKAGING |
| ES525370A ES525370A0 (en) | 1982-09-06 | 1983-09-05 | PROCEDURE FOR THE MANUFACTURE OF ELASTOMER SEALS FOR AEROSOL PACKAGE TO THE DIMETILETER |
| DE19833332167 DE3332167A1 (en) | 1982-09-06 | 1983-09-06 | Elastomeric seals for an aerosol conditioning containing dimethyl ether |
| GB08328927A GB2148912A (en) | 1982-09-06 | 1983-10-29 | Gaskets for use in pressurised dispensers |
| AU20907/83A AU2090783A (en) | 1982-09-06 | 1983-11-02 | Elastomeric gasket |
| ZA838363A ZA838363B (en) | 1982-09-06 | 1983-11-09 | Gaskets for use in pressurised dispensers |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8215109A FR2532714A1 (en) | 1982-09-06 | 1982-09-06 | Elastomer seal for aerosol contg. solvent |
| GB08328927A GB2148912A (en) | 1982-09-06 | 1983-10-29 | Gaskets for use in pressurised dispensers |
| AU20907/83A AU2090783A (en) | 1982-09-06 | 1983-11-02 | Elastomeric gasket |
| ZA838363A ZA838363B (en) | 1982-09-06 | 1983-11-09 | Gaskets for use in pressurised dispensers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8328927D0 GB8328927D0 (en) | 1983-11-30 |
| GB2148912A true GB2148912A (en) | 1985-06-05 |
Family
ID=27422684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08328927A Withdrawn GB2148912A (en) | 1982-09-06 | 1983-10-29 | Gaskets for use in pressurised dispensers |
Country Status (7)
| Country | Link |
|---|---|
| AU (1) | AU2090783A (en) |
| DE (1) | DE3332167A1 (en) |
| ES (1) | ES525370A0 (en) |
| FR (1) | FR2532714A1 (en) |
| GB (1) | GB2148912A (en) |
| IT (1) | IT1168965B (en) |
| ZA (1) | ZA838363B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0485941A2 (en) * | 1990-11-12 | 1992-05-20 | POPPE + CO. GIESSENER GUMMIWARENFABRIK GMBH & CO. KG | Liner for container closure |
| WO1997001611A1 (en) * | 1995-06-27 | 1997-01-16 | Bespak Plc | Dispensing apparatus |
| WO2008089875A1 (en) * | 2007-01-23 | 2008-07-31 | Unilever Plc | Small aerosol products |
| WO2011067574A1 (en) | 2009-12-03 | 2011-06-09 | Consort Medical Plc | Seal for a dispensing apparatus |
| US8129474B2 (en) | 2005-03-04 | 2012-03-06 | Consort Medical Plc | Seal for a dispensing apparatus |
| GB202001537D0 (en) | 2020-02-05 | 2020-03-18 | Consort Medical Plc | Pressurised dispensing container |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6006745A (en) * | 1990-12-21 | 1999-12-28 | Minnesota Mining And Manufacturing Company | Device for delivering an aerosol |
| US5290539A (en) * | 1990-12-21 | 1994-03-01 | Minnesota Mining And Manufacturing Company | Device for delivering an aerosol |
| EP0639148A1 (en) * | 1992-05-04 | 1995-02-22 | Minnesota Mining And Manufacturing Company | Device for delivering an aerosol |
| US5474758A (en) * | 1993-07-28 | 1995-12-12 | Minnesota Mining And Manufacturing Company | Seals for use in an aerosol delivery device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB800294A (en) * | 1955-09-27 | 1958-08-20 | Us Rubber Co | Improvements in vulcanization of butyl rubber |
| GB802546A (en) * | 1955-09-27 | 1958-10-08 | Us Rubber Co | Improvements in vulcanization of butyl rubber |
| GB826092A (en) * | 1957-03-11 | 1959-12-23 | Us Rubber Co | Improvements in the vulcanization of butyl rubber |
| GB835505A (en) * | 1957-04-05 | 1960-05-18 | Exxon Research Engineering Co | Vulcanizing chlorinated polymers |
| GB857428A (en) * | 1957-06-12 | 1960-12-29 | Exxon Research Engineering Co | Vulcanisation of synthetic rubber with polyhalomethyl phenol substances |
| GB862672A (en) * | 1957-06-11 | 1961-03-15 | Exxon Research Engineering Co | Curing butyl rubber with polymethylol meta-substituted phenols |
| GB873778A (en) * | 1959-03-23 | 1961-07-26 | Firestone Tire & Rubber Co | Vulcanised rubbery composition |
| GB1203864A (en) * | 1967-06-09 | 1970-09-03 | Stamicarbon | Wall or wall element of a container or tube for fluid lactam |
| GB1244208A (en) * | 1966-05-23 | 1971-08-25 | Protective Treat S Inc | Sealing adhesive compositions suitable for use in glazing |
| GB1335974A (en) * | 1971-04-19 | 1973-10-31 | Secr Defence | Gas turbine engine fuel system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3702310A (en) * | 1969-01-29 | 1972-11-07 | Grace W R & Co | Gasket-forming compositions having improved resistance to water-based aerosol products |
-
1982
- 1982-09-06 FR FR8215109A patent/FR2532714A1/en active Granted
-
1983
- 1983-09-02 IT IT22758/83A patent/IT1168965B/en active
- 1983-09-05 ES ES525370A patent/ES525370A0/en active Granted
- 1983-09-06 DE DE19833332167 patent/DE3332167A1/en not_active Withdrawn
- 1983-10-29 GB GB08328927A patent/GB2148912A/en not_active Withdrawn
- 1983-11-02 AU AU20907/83A patent/AU2090783A/en not_active Abandoned
- 1983-11-09 ZA ZA838363A patent/ZA838363B/en unknown
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB800294A (en) * | 1955-09-27 | 1958-08-20 | Us Rubber Co | Improvements in vulcanization of butyl rubber |
| GB802546A (en) * | 1955-09-27 | 1958-10-08 | Us Rubber Co | Improvements in vulcanization of butyl rubber |
| GB826092A (en) * | 1957-03-11 | 1959-12-23 | Us Rubber Co | Improvements in the vulcanization of butyl rubber |
| GB835505A (en) * | 1957-04-05 | 1960-05-18 | Exxon Research Engineering Co | Vulcanizing chlorinated polymers |
| GB862672A (en) * | 1957-06-11 | 1961-03-15 | Exxon Research Engineering Co | Curing butyl rubber with polymethylol meta-substituted phenols |
| GB857428A (en) * | 1957-06-12 | 1960-12-29 | Exxon Research Engineering Co | Vulcanisation of synthetic rubber with polyhalomethyl phenol substances |
| GB873778A (en) * | 1959-03-23 | 1961-07-26 | Firestone Tire & Rubber Co | Vulcanised rubbery composition |
| GB1244208A (en) * | 1966-05-23 | 1971-08-25 | Protective Treat S Inc | Sealing adhesive compositions suitable for use in glazing |
| GB1203864A (en) * | 1967-06-09 | 1970-09-03 | Stamicarbon | Wall or wall element of a container or tube for fluid lactam |
| GB1335974A (en) * | 1971-04-19 | 1973-10-31 | Secr Defence | Gas turbine engine fuel system |
Non-Patent Citations (1)
| Title |
|---|
| ENCYCLOPEDIA OF POLYMER SCIENCE & TECHNOLOGY (INTER SCIENCE), VOL 2, PAGE 791, TABLE 20-NOTE THE GASKET USES MENTIONED IN THE LEFT HAND AND RIGHT HNND COLUMNS OF TABLE 20 * |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0485941A2 (en) * | 1990-11-12 | 1992-05-20 | POPPE + CO. GIESSENER GUMMIWARENFABRIK GMBH & CO. KG | Liner for container closure |
| EP0485941A3 (en) * | 1990-11-12 | 1993-01-13 | Poppe + Co. Giessener Gummiwarenfabrik Gmbh & Co. Kg | Liner for container closure |
| US6234362B1 (en) | 1995-06-27 | 2001-05-22 | Bespak Plc | Dispensing apparatus |
| AU709626B2 (en) * | 1995-06-27 | 1999-09-02 | Bespak Plc | Dispensing apparatus |
| EP0969069A3 (en) * | 1995-06-27 | 2000-04-12 | Bespak Plc | Dispensing apparatus |
| US6092696A (en) * | 1995-06-27 | 2000-07-25 | Bespak Plc | Dispensing apparatus for dispensing pressurized fluid |
| WO1997001611A1 (en) * | 1995-06-27 | 1997-01-16 | Bespak Plc | Dispensing apparatus |
| EP1681330A2 (en) | 1995-06-27 | 2006-07-19 | Bespak plc | Dispensing apparatus |
| EP1681330A3 (en) * | 1995-06-27 | 2010-03-17 | Consort Medical PLC | Dispensing apparatus |
| US8129474B2 (en) | 2005-03-04 | 2012-03-06 | Consort Medical Plc | Seal for a dispensing apparatus |
| WO2008089875A1 (en) * | 2007-01-23 | 2008-07-31 | Unilever Plc | Small aerosol products |
| WO2011067574A1 (en) | 2009-12-03 | 2011-06-09 | Consort Medical Plc | Seal for a dispensing apparatus |
| GB202001537D0 (en) | 2020-02-05 | 2020-03-18 | Consort Medical Plc | Pressurised dispensing container |
| WO2021156602A1 (en) | 2020-02-05 | 2021-08-12 | Bespak Europe Limited | Pressurised dispensing container |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3332167A1 (en) | 1984-03-08 |
| FR2532714A1 (en) | 1984-03-09 |
| GB8328927D0 (en) | 1983-11-30 |
| ES8405430A1 (en) | 1984-06-16 |
| IT8322758A0 (en) | 1983-09-02 |
| IT1168965B (en) | 1987-05-20 |
| ES525370A0 (en) | 1984-06-16 |
| FR2532714B1 (en) | 1985-02-08 |
| AU2090783A (en) | 1985-05-09 |
| ZA838363B (en) | 1984-09-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |