C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
400/6531, 400/90
C09D 127/18 (2006.01) B05D 5/08 (2006.01) C08L 27/18 (2006.01)
Patent
CA 1153485
HOE 79/F 905 Coating and primer formulation on the basis of a copolymer of tetrafluoroethylene and a perfluoro- (alkylvinyl) ether, and use thereof Abstract or the disclosure: Coating formulations having improved adhesion are described which are especially suitable as primer for top coats of fluorocarbon polymers, which comprise a) a copolymer of tetrafluoroethylene units, units of a perfluoroalkylvinyl ether and optionally units of hexafluoropropylene or vinylidene fluoride, b) optionally dispersed polytetrafluoroethylene particles in addition, c) a mixture of lithium hydroxide and suspended fine-particle pyrogenic SiO2, and d) water as liquid carrier. The coating formulations are applied according to known methods to substrates such as metals, glass or ceramic surfaces. They may be used as single- layer systems without top coat, or as primer, the top coat being applicable immediately after a short-time drying only. Application fields are the coating of household equipment or technical apparatus, where a high-grade adhesion onto the substrate, combined with anti-adhesive properties and a smooth surface are obtained.
346171
Gebauer Gerhard
Mayer Franz
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Hoechst Aktiengesellschaft
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