Coating processes – Applying superposed diverse coating or coating a coated base – Synthetic resin coating
Patent
1981-09-10
1983-07-26
Michl, Paul R.
Coating processes
Applying superposed diverse coating or coating a coated base
Synthetic resin coating
428422, 524401, 524520, B05D 136
Patent
active
043954456
ABSTRACT:
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 SiO.sub.2, 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.
REFERENCES:
patent: 3694392 (1972-09-01), Werner
patent: 4252859 (1981-02-01), Concannon
Gebauer Gerhard
Mayer Franz
Hoechst Aktiengesellschaft
Michl Paul R.
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