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GB1330124A - Polysiloxane alastomer films - Google Patents

Polysiloxane alastomer films

Info

Publication number
GB1330124A
GB1330124A GB4541169A GB1330124DA GB1330124A GB 1330124 A GB1330124 A GB 1330124A GB 4541169 A GB4541169 A GB 4541169A GB 1330124D A GB1330124D A GB 1330124DA GB 1330124 A GB1330124 A GB 1330124A
Authority
GB
United Kingdom
Prior art keywords
polysiloxane
elastomer
substrate
solvent
polyester
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.)
Expired
Application number
GB4541169A
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.)
NAT RES DEV
National Research Development Corp UK
Original Assignee
NAT RES DEV
National Research Development Corp UK
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 NAT RES DEV, National Research Development Corp UK filed Critical NAT RES DEV
Publication of GB1330124A publication Critical patent/GB1330124A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/06—Flat membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/70—Polymers having silicon in the main chain, with or without sulfur, nitrogen, oxygen or carbon only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/9145—Endless cooling belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
    • B32B27/283—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polysiloxanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2383/00—Polysiloxanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/80—Medical packaging

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Moulding By Coating Moulds (AREA)
  • Laminated Bodies (AREA)

Abstract

1330124 Polysiloxane films; laminates NATIONAL RESEARCH DEVELOPMENT CORP 10 Sept 1970 [15 Sept 1969] 45411/69 Headings B5B and B5N [Also in Divisions B2 and D1] In a process for the continuous or semicontinuous production of polysiloxane elastomer films a dope containing a solution of polysiloxane gumstock and a catalyst, suitably 2, 4-dichlorobenzoyl peroxide, in a solvent, preferably a blend of toluene or xylene and an iso-paraffin, and having a solids content of at least 20% by weight is spread from a hopper 7 on to a moving substrate 1 which is passed into a first oven 8 in which the solvent is evaporated and a second oven 9 in which the elastomer is cured. Preferably the gumstock contains from 30% to 50% by weight of a filler, e.g. silica and 1À5% to 6% by weight of catalyst, and the dope contains 20% to 60% by weight solids. A doctor blade 6 co-operating with edge member 5 controls the thickness of the polysiloxane dope layer and a cushion of hot gas is supplied to the ovens 8 and 9 and serves to support the coated substrate as it passes therethrough and to evaporate the solvent from the dope. Preferably the solvent is evaporated at between 70‹ C. and 80‹ C. and the curing is effected for between 30 seconds and 30 minutes at 130‹ C. to 180‹ C. The substrate may be of glass, cloth, paper, cellulose acetate or thermoplastic material but is preferably a polyester fabric. Self-supporting polysiloxane elastomer films may be obtained by releasing the cured film with a stripper blade 13 as the substrate passes over guide roller 11 or the coated substrate may be wound up intact on roller 12. A laminate of polysiloxane elastomer and reinforcing fabrics may be obtained by lowering a suitable porous reinforcing fabric, e.g. of a polyamide or polyester, on to the elastomer film carried on the polyester substrate fabric so that it floats through the hot air passing through the first oven and is embedded into the upper layers of elastomer prior to curing. Alternatively a freshly elastomer-coated reinforcing fabric may be lowered on to a previously cast polysiloxane elastomer film carried on a polyester support.
GB4541169A 1969-09-15 1969-09-15 Polysiloxane alastomer films Expired GB1330124A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4541169 1969-09-15

Publications (1)

Publication Number Publication Date
GB1330124A true GB1330124A (en) 1973-09-12

Family

ID=10437113

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4541169A Expired GB1330124A (en) 1969-09-15 1969-09-15 Polysiloxane alastomer films

Country Status (3)

Country Link
DE (1) DE2045558A1 (en)
FR (1) FR2061394A5 (en)
GB (1) GB1330124A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9950453B2 (en) 2012-12-12 2018-04-24 Wacker Chemie Ag Production of thin silicone films
CN107999339A (en) * 2017-12-14 2018-05-08 江门市多快好省机械有限公司 A kind of novel coating machine
US10518455B2 (en) 2014-01-30 2019-12-31 Wacker Chemie Ag Method for producing silicone multi-layer composites

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3819772A (en) * 1973-02-23 1974-06-25 Us Health Education & Welfare Method of making thin defect-free silicone rubber films and membranes
FR2478482A1 (en) * 1980-03-21 1981-09-25 Lidorenko Nikolai Supported gas-permeable membranes - for use in blood oxygenator(s)
JPS58219022A (en) * 1982-06-16 1983-12-20 Toray Silicone Co Ltd Method for manufacturing silicone elastomer thin film
DE3304232A1 (en) * 1983-02-08 1984-10-25 Metzeler Kautschuk GmbH, 8000 München FLOORING, IN PARTICULAR FOR AIRCRAFT

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9950453B2 (en) 2012-12-12 2018-04-24 Wacker Chemie Ag Production of thin silicone films
US10518455B2 (en) 2014-01-30 2019-12-31 Wacker Chemie Ag Method for producing silicone multi-layer composites
CN107999339A (en) * 2017-12-14 2018-05-08 江门市多快好省机械有限公司 A kind of novel coating machine

Also Published As

Publication number Publication date
DE2045558A1 (en) 1971-03-25
FR2061394A5 (en) 1971-06-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees