GB833899A - Improvements relating to surface coatings - Google Patents

Improvements relating to surface coatings

Info

Publication number
GB833899A
GB833899A GB32881/57A GB3288157A GB833899A GB 833899 A GB833899 A GB 833899A GB 32881/57 A GB32881/57 A GB 32881/57A GB 3288157 A GB3288157 A GB 3288157A GB 833899 A GB833899 A GB 833899A
Authority
GB
United Kingdom
Prior art keywords
silicone
mixture
layer
coat
emulsion
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
GB32881/57A
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.)
UCB SA
Original Assignee
UCB SA
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 UCB SA filed Critical UCB SA
Publication of GB833899A publication Critical patent/GB833899A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A21—BAKING; EDIBLE DOUGHS
    • A21B—BAKERS' OVENS; MACHINES OR EQUIPMENT FOR BAKING
    • A21B3/00—Parts or accessories of ovens
    • A21B3/16—Machines for cleaning or greasing baking surfaces
    • A—HUMAN NECESSITIES
    • A21—BAKING; EDIBLE DOUGHS
    • A21D—TREATMENT, e.g. PRESERVATION, OF FLOUR OR DOUGH, e.g. BY ADDITION OF MATERIALS; BAKING; BAKERY PRODUCTS; PRESERVATION THEREOF
    • A21D8/00—Methods for preparing or baking dough
    • A21D8/08—Prevention of sticking, e.g. to baking plates
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
    • B05D5/083—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface involving the use of fluoropolymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
    • C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C09D127/18—Homopolymers or copolymers of tetrafluoroethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Cookers (AREA)
  • Cosmetics (AREA)

Abstract

A coating comprising a silicone and polytetrafluorethylene in conjunction is applied to the clean metal surface of a metal article. The surface may be cleaned, e.g. by sand blasting or nitric acid treatment. A layer of silicone may be applied first, followed by a layer of P.T.F.E., or a mixture of the two substances may be applied. Preferably a plurality of coats is applied, each consisting of a mixture, the proportion of silicone being reduced from 50% in the first coat to 5% in the top coat. The P.T.F.E. is applied as an aqueous emulsion; the silicone may be made into an emulsion and mixed therewith or if applied separately may be applied as a solution in an organic solvent. Following application, which may be by brushing or spraying, the surface is dried then heated to cure the silicone and coalesce the particles of P.T.F.E. Suitable silicones are methyl-, phenyl-, or methylphenyl-silicone resins in which the R : Si ratio is less than 1.8 : 1. The process may be applied to steel or aluminium cooking utensils, vessels in which chemical reactions are performed, stirrers, or moulds for use with rubber or plastics.ALSO:A coating comprising a silicone and polytetrafluorethylene in conjunction is applied to the clean metal surface of a metal article. A layer of silicone may be applied first, followed by a layer of P.T.F.E., or a mixture of the two substances may be applied. Preferably, a plurality of coats is applied each consisting of a mixture, the proportion of silicone being reduced from 50% in the first coat to 5% in the top coat. The P.T.F.E. is applied as an aqueous emulsion; the silicone may be made into an emulsion and mixed therewith or if applied separately may be applied as a solution in an organic solvent. Following application, the surface is dried then heated to cure the silicone and coalesce the particles of P.T.F.E. Suitable silicones are methyl-, phenyl-, or methylphenylsilicone resins in which the R:Si ratio is less than 1.8:1. The process may be applied to steel or aluminium cooking utensils, vessels in which chemical reactions are performed, stirrers, or moulds for use with rubber or plastics.ALSO:A coating comprising a silicone and polytetrafluorethylene in conjunction is applied to the clean metal surface of a metal article, e.g. a baking tin, saucepan or frying pan of steel or aluminium. A layer of silicone may be applied first, followed by a layer of P.T.F.E., or a mixture of the two substances may be applied. Preferably, a plurality of coats is applied each consisting of a mixture, the proportion of silicone being reduced from 50% in the first coat to 5% in the top coat. The P.T.F.E. is applied as an aqueous emulsion; the silicone may be made into an emulsion and mixed therewith or if applied separately may be applied as a solution in an organic solvent. Following application, the surface is dried then heated to cure the silicone and coalesce the particles of P.T.F.E. Suitable silicones are methyl-, phenyl-, or methylphenyl-silicone resins in which the R : Si ratio is less than 1.8 : 1.
GB32881/57A 1956-11-16 1957-10-22 Improvements relating to surface coatings Expired GB833899A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE833899X 1956-11-16

Publications (1)

Publication Number Publication Date
GB833899A true GB833899A (en) 1960-05-04

Family

ID=3881797

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32881/57A Expired GB833899A (en) 1956-11-16 1957-10-22 Improvements relating to surface coatings

Country Status (5)

Country Link
BE (1) BE552625A (en)
CH (1) CH350777A (en)
FR (1) FR1184496A (en)
GB (1) GB833899A (en)
NL (2) NL95764C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0681013A2 (en) * 1994-05-04 1995-11-08 LAMBDA S.r.l. Water paints containing decomposable products for the non-stick coating of aluminium cookware
EP0724915A1 (en) * 1995-01-31 1996-08-07 LAMBDA S.r.l. Water paint for non-stick PTFE-based coating of shaped aluminium articles or aluminium sheet

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1092742A (en) * 1976-03-05 1980-12-30 David K. Wald Coating composition comprising a silicone resin, a fluorocarbon polymer, an epoxy resin, a silicone fluid, and an inorganic hardening agent
DE8816295U1 (en) * 1988-03-02 1989-07-06 Heinzel, Winfried, 7758 Meersburg Coated plate for household appliances

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0681013A2 (en) * 1994-05-04 1995-11-08 LAMBDA S.r.l. Water paints containing decomposable products for the non-stick coating of aluminium cookware
EP0681013A3 (en) * 1994-05-04 1996-01-03 Lambda Srl Water paints containing decomposable products for the non-stick coating of aluminium cookware.
EP0724915A1 (en) * 1995-01-31 1996-08-07 LAMBDA S.r.l. Water paint for non-stick PTFE-based coating of shaped aluminium articles or aluminium sheet

Also Published As

Publication number Publication date
FR1184496A (en) 1959-07-22
BE552625A (en) 1959-12-31
CH350777A (en) 1960-12-15
NL95764C (en) 1960-10-15
NL222072A (en)

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