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US 5,633,305 AGranted
Coating composition with heat-curing film formation and its use
AssigneeTeroson GmbH
InventorsKarl Wesch, Dieter Stamm, Dirk Reitenbach, Winfried Schwittay
Life of this patent
Estimating the term…
Abstract
Coating compositions based on waxes, wax-like compounds, drying oils or alkyd resins are improved in their running behavior by the addition of additives which gel at elevated temperature. Other positive properties of the coating compositions, such as for example wetting, penetration (creepage), sprayability, are not adversely affected.
Claims28
A cavity sealing composition comprising:
- (a) a film forming composition and (b) a gelling additive which gels at elevated temperatures, wherein the gelling additive comprises a fine polymer powder and a plasticizer for the fine polymer powder and wherein the polymer powder comprises from 0.1% to 15% by weigh of the sealing composition and the plasticizer comprises from 0.1% to 15% by weight of the sealing composition.
A composition useful as a cavity sealing composition comprising:
- (a) a film forming composition selected from the group consisting of polyethylene waxes, paraffin waxes, microwaxes, hydrocarbon and/or ester resins, alkyd resins, drying oils, and a combination of said members, and
- (b) a gelling additive comprised of:
- (i) a fine polymer powder, said fine polymer powder being comprised of a member selected from the group consisting of polyvinyl chloride, vinyl chloride/vinyl acetate copolymers, copolymers of C.sub.1-8 alkyl esters of methacrylic acid with one or more comonomers, copolymers of C.sub.1-8 alkyl esters acrylic acid with one or more comonomers, polystyrene, and copolymers of styrene with a member selected from the group consisting of methacrylic acid, C.sub.1-8 alkyl esters of methacrylic acid, acrylic acid, C.sub.1-8 alkyl esters of acrylic acid, and acrylonitrile, which copolymers of styrene may optionally contain further comonomers, wherein said fine polymer powder is present in said composition in an amount of from 0. 1 to 15% by weight of said composition, and
- (ii) a plasticizer for said fine polymer powder, wherein said plasticizer is selected from the group consisting of a C.sub.4-14 alkyl ester of phthalic acid, a C.sub.4-14 alkyl ester of adipic acid, a C.sub.4-14 alkyl ester of sebacic acid, an alkyl sulfonic acid ester of phenol, an alkyl or aryl ester of phosphoric acid, an aliphatic and/or aromatic hydrocarbon resin, and an ester of a colophony resinic acid and wherein said plasticizer is present in said composition in an amount of from 0.1 to 15% by weight of said composition, wherein said gelling additive gels at a temperature of from 60.degree. C. to 160.degree. C.
1 more element
A process for coating metallic objects, said process comprising;
- applying as a coating to a metallic object a composition comprising a film forming composition and a gelling additive which gels at elevated temperatures, the gelling additive comprising e fine polymer powder and a plasticizer for the fine polymer powder, wherein the fine polymer powder comprises from 0.1% to 15% by weight of the coating composition and the plasticizer comprises from 0.1% to 15% by weight of the coating composition and gelling said gelling additive in said coating composition.
Dependencies are inferred from the claim text.