[go: up one dir, main page]

EP0583293A1 - Thickened compositions - Google Patents

Thickened compositions

Info

Publication number
EP0583293A1
EP0583293A1 EP19920909325 EP92909325A EP0583293A1 EP 0583293 A1 EP0583293 A1 EP 0583293A1 EP 19920909325 EP19920909325 EP 19920909325 EP 92909325 A EP92909325 A EP 92909325A EP 0583293 A1 EP0583293 A1 EP 0583293A1
Authority
EP
European Patent Office
Prior art keywords
thickened
composition according
compositions
peracid
alkali metal
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Withdrawn
Application number
EP19920909325
Other languages
German (de)
English (en)
French (fr)
Inventor
Sonja Kagermeier
Christopher Revell
Sharon Lesley Wilson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Solvay Interox Ltd
Original Assignee
Solvay Interox Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Solvay Interox Ltd filed Critical Solvay Interox Ltd
Publication of EP0583293A1 publication Critical patent/EP0583293A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
    • A61L2/18—Liquid substances or solutions comprising solids or dissolved gases
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
    • A01N37/16—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group; Thio analogues thereof
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds

Definitions

  • Thickened Compositions The present invention relates to thickened compositions and particularly to thickened peroxygen compositions. '
  • An alternative class of compounds comprises peroxygen compounds, of which one sub-class of especial interest comprises peracids which contain the moiety -CO-OOH.
  • Peracids like hydrogen peroxide enjoy the substantial advantage of generating oxygen, either as such or in an active form during its deployment rather than chlorine or active chlorine species upon which environmentalists currently cast doubts.
  • peracids are more effective in general than hydrogen peroxide.
  • liquid compositions can be rendered less free-flowing by the incorporation of materials which thicken the liquid or introduce structure into the liquid.
  • substances which have hitherto been effective thickeners for other liquids would automatically to be suitable for thickening liquid peracids or peracid solutions.
  • This difficulty derives from the very same properties of the peracids that make them effective oxidising agents and bleaches. Interaction with thickeners during storage can result in the mutual decomposition of the peracid and the thickener, which in turn not only negates the beneficial effects of thickening, but also progressively removes the capability of the peracid to perform its desired task.
  • aqueous compositions comprising a peroxygen compound at least partly in solution together with a thickener characterised in that the thickener comprises an alkali metal silicate in an amount sufficient to increase the viscosity to at least lOOcPs.
  • the invention thickening system is intended particularly for thickening soluble peracids.
  • the thickening system may alternatively be employed to thicken alternative peroxygen compositions, including compositions which are easier to thicken than soluble peracid compositions.
  • the peroxygen compound is organic.
  • the system is applicable to organic peroxides, ie organic compounds containing a -C-O-O-H or C-O-O-C- moiety, 5 including alkyl, cycloalkyl or aryl peroxides, acyl peroxides, peroxycarbonates, and organic hydroperoxides and to compositions containing less or even poorly soluble peroxyacids such as those containing at least 8 carbons.
  • the system is applied to compositions containing soluble peracids, which may include low molecular weight aliphatic peroxyacids, for example containing up to 6 carbon atoms, of which especially preferred examples comprise peracetic acid and perpropionic acid.
  • compositions may alternatively include soluble aromatic peroxyacids, such monoperphthalic acid, or sulphoperbenzoic acid. A mixture of peracids may be employed, if desired.
  • the peroxygen compound such as the peracid
  • % herein is by weight based on the total weight of the composition, unless specifically stated otherwise.
  • the lower limit is at the discretion of the user, but is normally not below about 0.1%.
  • the invention is particularly applicable to ready to use compositions containing a low concentration of active peroxygen compound, and for example compositions intended for application for cleansing and/or disinfecting purposes to hard surfaces and particularly to non-horizontal surfaces.
  • Such dilute compositions typically contain from 0.25 to about 5% by weight of an organic peroxygen compound, preferably a peracid, for example peracetic acid and in a number of practical embodiments the peroxygen compound content will be from about 0.5 to 2%. It will be recognised that such compositions may contain a significant concentration of hydrogen peroxide, which may, for example, ⁇ comprise from about 1 to 12% of the composition, and in a number of embodiments from 3 to 10%.
  • the peracid compositions, and particularly those containing aliphatic peracids are often conveniently derived by oxidation of the corresponding aliphatic carboxylic acid with aqueous hydrogen peroxide, and will often contain residual amounts of both the carboxylic acid and hydrogen peroxide.
  • the compositions may contain up to 40% of the corresponding carboxylic acid and up to 40 % hydrogen peroxide, with a minimum water content usually of 20%.
  • concentration of the carboxylic acid and of hydrogen peroxide each tend to be selected in the range from about 1 to 12%.
  • the total concentration of carboxylic acid plus percarboxylic acid is often from 3 to 20% and in many instances from 3 to 15%. It is often convenient to restrict the concentration of hydrogen peroxide to no greater than 7%.
  • equilibrium amounts of carboxylic acid, percarboxylic acid and hydrogen peroxide are present.
  • the silicate is usually sodium silicate, on account of its widespread availability at a reasonable cost, but other silicates such as potassium or lithium may be employed instead of all or part of the sodium silicate.
  • the silicates are conveniently introduced into the composition in the form of an aqueous solution, preferably concentrated and for example containing between about 30 and 50% by weight alkali metal silicate, in order to assist even distribution and mixing of the silicate with the peroxygen compound solution. Direct introduction of solid silicate is not recommended.
  • the pH of the composition is a further factor affecting the viscosity attained by a thickened composition during storage and the rate at which thickening occurs in the present invention.
  • a pH of at least 1, approximately so as to encourage thickening to occur and in practice the pH is normally not higher than about 4.5.
  • a preferred pH range for the compositions comprise from about pH 3 to 4.5.
  • many compositions such as dilute peracetic acid compositions attain that range without any further adjustment.
  • compositions may include one or more stabilisers for peracids and/or hydrogen peroxide so as to encourage the chemical stability of the " thickened products.
  • Known stabilisers for peroxy compounds include aminopolycarboxylic acids, such as EDTA and DTPA, or N-heterocyclic aromatic carboxylic acids such as quinolinic acid, picolinic acid and dipicolinic acid.
  • Particularly effective stabilisers comprise organic polyphosphonic acids, including hydroxyethylidene-diphosphonic acid and aminopolymethylene phosphonic acids. The latter often satisfy the general formula: X2N-(-CHR-CHR-NX-) n -NX 2 in which X represents -CH2-PO3H2
  • R represents H or the two R substituents combine to complete a cyclohexane ring, and n is an integer from 1 to 3.
  • Examples of the formula include ethylenediaminetetra- (methylene phosphonic acid), diethylenetriaminepenta- (methylene phosphonic acid) and cyclohexanediaminetetra- (methylene phosphonic acid) .
  • composition may also contain one or more surfactants, for example amine oxides, and additionally or alternatively, one or more perfumes and/or dyes, preferably selected at least partly on the basis of resistance to oxidation.
  • surfactants for example amine oxides
  • perfumes and/or dyes preferably selected at least partly on the basis of resistance to oxidation.
  • compositions of the present invention can be made by introducing the selected amount of the alkali metal silicate, preferably in concentrated aqueous solution, into an aqueous precursor composition containing essentially water and the peroxygen compound, such as an aqueous solution of peracid, which solution can optionally contain any residual amounts of the corresponding carboxylic acid and hydrogen peroxide, and agitating the resultant mixture to distribute the thickener substantially evenly through the mixture.
  • the silicate solution introduced preferably has a concentration of at least 30% w/w up to a saturated solution.
  • the pH of the solution is measured and adjusted, if necessary, by introduction of the appropriate choice from a mineral acid if the solution is insufficiently acid or an alkali if the solution is too acid.
  • the process can be conducted at any convenient temperature, for example at the prevailing ambient temperature which is typically in the range of from 10 to 35°C.
  • the mixture may be gently heated to not higher than about 50°C so as to encourage rapid distribution of the thickener and the mixture thereafter permitted to cool to ambient.
  • compositions of the present invention and particularly those having a viscosity in the region of about 200 to 600cPs are intended for application domestically to surfaces, such as non-horizontal surfaces, which it is desired to disinfect and clean, thereby taking advantage of the disinfectant properties of the peroxygen compound, especially the peracid and the cleansing properties of the detergents.
  • the peroxygen compositions in solid form may be incorporated in particulate or granular washing or disinfecting compositions or dispersed in blocks or bars.
  • a second aspect of the present invention comprises the use the aforementioned invention compositions for disinfecting and cleansing by applying the composition to a hard surface and permitting contact to be maintained until at least some disinfection has occurred.
  • compositions may be applied using conventional means and will also take into account the physical state of the composition, particularly whether it is a viscous pourable liquid or a gel.
  • the compositions may be poured or smeared onto a distributor such as a cloth or sponge and applied to a receiving surface by passage of distributor across the surface.
  • the compositions which have a sufficiently low viscosity for them to be pourable may be forced through a distributing nozzle directly onto the receiving surface, for example by squeezing a resilient deformable storage container.
  • Compositions in gel form may be applied by a spatula or like article or as indicated previously by incorporation in a host composition or block.
  • the surfaces onto which the compositions may be applied are often domestic and especially in the kitchen and other locations in which micro-organisms may be found.
  • Suitable receptive surfaces are usually made from wood, glass, ceramics, plastic laminates and metal, and include work surfaces, sinks, pipework, walls, floors, and especially toilet bowls. It will be recognised, though, that similar potentially infected surfaces may be found in non-domestic situations, such as in commercial kitchens, food processing apparatus or containers or brewery or distillery vessels or hospitals or in animal or poultry-rearing establishments or in glass houses or other areas where the maintenance of hygienic conditions is important.
  • the present invention includes the use of invention compositions in such non- domestic situations.
  • compositions may subsequently be removed from the surfaces by water washing, possibly applied using a cloth, sponge or like article.
  • a further use for a gelled composition is to form it into a block and suspend it, either as such or within a permeable container, within a liquid medium that it is desired to disinfect, such as process water, industrial circulating water or domestically the water supply to a toilet.
  • Example 1 Example 1 was repeated, but employing 7g of the sodium silicate solution.
  • the resultant composition had a pH of 3.5 rising to pH 4 after storage for 20 days and a viscosity of about 1500 cPs after 12 days.
  • the composition had become solidified during storage for 20 weeks at 22°C, by which time it had retained 86% of its Avox.
  • Example 4 Example 1 was repeated, but employing 5 13g of the sodium silicate solution.
  • the resultant composition had a pH of 3.9 rising to pH 4.0 after storage for 20 days and a viscosity of over 80,000cPs after 16 weeks.
  • the composition retained 47% of its Avox after 16 weeks storage at 22°C. 10
  • Example 4 Example 4
  • Example 4 Example 4 was repeated, but employing in addition concentrated sulphuric acid, 1.2ml.
  • the resultant composition had a pH of 1.2, and a viscosity of about 1400 cPs after 16 weeks.
  • the composition retained 74% 15 of its Avox after 16 weeks storage at 22°C.
  • Example 5 Example 5
  • Example 3 was repeated, additionally incorporating an alkylammonium methosulphate (2g) available from Stepan under their trademark STEPANQUAT F.
  • the 20. resultant composition had a viscosity of 22,000 cPs after 16 weeks storage at 22°C and had retained 99% of its Avox.
  • Example 6
  • Example 3 was repeated, additionally incorporating an amine oxide (2g). After 16 weeks storage 25 at 22°C, the composition had a viscosity of 3000 cPs and had retained 72% of its Avox.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Dentistry (AREA)
  • Engineering & Computer Science (AREA)
  • Plant Pathology (AREA)
  • Chemical & Material Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Detergent Compositions (AREA)
EP19920909325 1991-05-08 1992-05-06 Thickened compositions Withdrawn EP0583293A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB919109928A GB9109928D0 (en) 1991-05-08 1991-05-08 Thickened compositions
GB91099283 1991-05-08

Publications (1)

Publication Number Publication Date
EP0583293A1 true EP0583293A1 (en) 1994-02-23

Family

ID=10694627

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920909325 Withdrawn EP0583293A1 (en) 1991-05-08 1992-05-06 Thickened compositions

Country Status (8)

Country Link
EP (1) EP0583293A1 (es)
JP (1) JP3163500B2 (es)
AR (1) AR245208A1 (es)
AU (2) AU664548B2 (es)
BR (1) BR9205982A (es)
CA (1) CA2102597A1 (es)
GB (1) GB9109928D0 (es)
WO (1) WO1992019287A1 (es)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5407685A (en) * 1986-02-06 1995-04-18 Steris Corporation Controlled oxygen/anti-microbial release films
GB9109928D0 (en) * 1991-05-08 1991-07-03 Interox Chemicals Ltd Thickened compositions
SE506880C2 (sv) * 1992-07-01 1998-02-23 Betzdearborn Inc Steriliseringsförfarande och komposition
GB9219465D0 (en) * 1992-09-15 1992-10-28 Solvay Interox Ltd Microbicidal compositions and methods
GB9425881D0 (en) * 1994-12-21 1995-02-22 Solvay Interox Ltd Thickened peracid compositions
GB9425882D0 (en) * 1994-12-21 1995-02-22 Solvay Interox Ltd Thickened peracid compositions
DE19501744A1 (de) * 1995-01-23 1996-07-25 Solvay Interox Gmbh Oxidierende schichtbildende Zusammensetzung
US5830852A (en) * 1995-12-19 1998-11-03 Cobra Therapeutics, Ltd. Compositions for insulin-receptor mediated nucleic acid delivery
DE19618674A1 (de) * 1996-05-09 1997-11-13 Solvay Interox Gmbh Kit zur Behandlung von polymeren Materialien mit Schimmelpilz-bedingten Beeinträchtigungen
JP4220673B2 (ja) 1998-07-21 2009-02-04 ミリポア・コーポレイション 遍在性クロマチンオープニングエレメント（ｕｃｏｅ）を含むポリヌクレオチド
DE19962342A1 (de) 1999-12-23 2001-07-12 Henkel Ecolab Gmbh & Co Ohg Persäuren mit guter Haftung auf Oberflächen
US6506417B1 (en) 2001-06-28 2003-01-14 Fmc Technologies, Inc. Composition and process for reducing bacterial citrus canker organisms
US7071152B2 (en) * 2003-05-30 2006-07-04 Steris Inc. Cleaning and decontamination formula for surfaces contaminated with prion-infected material
US7169237B2 (en) 2004-04-08 2007-01-30 Arkema Inc. Stabilization of alkaline hydrogen peroxide
US7431775B2 (en) 2004-04-08 2008-10-07 Arkema Inc. Liquid detergent formulation with hydrogen peroxide
US7045493B2 (en) 2004-07-09 2006-05-16 Arkema Inc. Stabilized thickened hydrogen peroxide containing compositions
NZ610887A (en) 2010-10-22 2015-07-31 Agri Neo Inc Synergistic activity of peracetic acid and at least one sar inducer for the control of pathogens in and onto growing plants
WO2016131133A1 (en) 2015-02-19 2016-08-25 Agri-Neo Inc. Composition of peracetic acid and at least one organic fungicide for the control of pathogens in and onto growing plants
AU2015390857A1 (en) * 2015-04-09 2017-08-17 Ecolab Usa Inc. Aqueous cleaning composition for cleaning and disinfecting hard surfaces

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4655781A (en) * 1984-07-02 1987-04-07 The Clorox Company Stable bleaching compositions
US4800036A (en) * 1985-05-06 1989-01-24 The Dow Chemical Company Aqueous bleach compositions thickened with a viscoelastic surfactant
DE3709347A1 (de) * 1987-03-21 1988-10-06 Degussa Peroxycarbonsaeure enthaltende waessrige bleichmittelsuspensionen, verfahren zu ihrer herstellung und ihre verwendung
EP0429124A1 (en) * 1989-11-21 1991-05-29 The Procter & Gamble Company Chlorine-free liquid automatic dishwashing compositions
GB9109928D0 (en) * 1991-05-08 1991-07-03 Interox Chemicals Ltd Thickened compositions

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9219287A1 *

Also Published As

Publication number Publication date
CA2102597A1 (en) 1992-11-09
BR9205982A (pt) 1994-08-02
AU692667B2 (en) 1998-06-11
WO1992019287A1 (en) 1992-11-12
GB9109928D0 (en) 1991-07-03
AU1665592A (en) 1992-12-21
AU4568996A (en) 1996-05-09
AR245208A1 (es) 1993-12-30
AU664548B2 (en) 1995-11-23
JPH06507160A (ja) 1994-08-11
JP3163500B2 (ja) 2001-05-08

Similar Documents

Publication Publication Date Title
EP0583293A1 (en) Thickened compositions
EP0799298B2 (en) Thickened peracid compositions
US5733474A (en) Thickened aqueous peracid compositions
GB2255507A (en) Thickened peroxygen compound containing compositions
US6080712A (en) Thickened peracid compositions
JP3193756B2 (ja) パーオキシカルボン酸の水性懸濁液
NZ244750A (en) Disinfectant compositions containing a lower aliphatic peracid, a hydrogen peroxide stabilizer, and a corrosion inhibitor in an aqueous solution
JPS63249769A (ja) 貯蔵安定な、流動性ないしペースト状の水性漂白剤懸濁液、その製造方法、および漂白−および消毒法
JP2005154551A (ja) 除菌洗浄剤組成物
JPH06501913A (ja) 防食性殺菌剤
JPH11322523A (ja) 過酢酸及び過ギ酸を含有する水性殺菌剤、その製造方法及びその使用
JP5332679B2 (ja) 安定性に優れる過酢酸水溶液
US4088597A (en) Iodophor solution
JPH0327304A (ja) 消毒剤濃厚液
JPS63249770A (ja) 貯蔵安定な、流動性ないしペースト状の水性漂白剤懸濁液、その製造法、および漂白−および消毒法
GB1571357A (en) Storable solid compositions for dilution with water to form aqueous peracid solutions
JP4302191B2 (ja) 次亜塩素酸塩漂白組成物およびその送出システム
JPH0320400A (ja) 水性液体漂白組成物
JP2002538187A (ja) 抗菌剤組成物の製造方法
CA3081989A1 (en) Stable nitric acid blends and uses thereof
JPH04503920A (ja) 漂白剤懸濁液
KR0153115B1 (ko) 안정화된 표백조성물 및 이의 제조방법
JPH01190795A (ja) 洗浄漂白剤組成物
US20210130736A1 (en) Process for the manufacture of an aqueous composition suitable for physical foaming
HK1007166B (en) Aqueous suspensions of peroxycarboxylic acids

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19931028

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB IT LI NL SE

17Q First examination report despatched

Effective date: 19970909

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20011201