Thermosetting powdery coating composition

Details Thermosetting powdery coating composition Thermosetting powdery coating composition

1990-10-30

1992-09-15

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

5253263, C08L 6702

Patent

active

051479346

ABSTRACT:
The thermosetting powdery coating composition of the invention comprises (A) from 40 to 98 parts by weight of a fluorinecontaining copolymer, which is a copolymer of a fluoroolefin and a comonomer having a crosslinkable reactive group, e.g., hydroxy, carbonyl, amino and glycidyl groups, containing at least 10% by weight of fluorine and having an intrinsic viscosity of 0.05-2 dl/g (30.degree. C., tetrahydrofuran) and a glass transition temperature of 30.degree.-120.degree. C. and (B) from 60 to 2 parts by weight of a curing agent capable of forming crosslinks by reacting with the crosslinkable reactive groups in (A). The powdery coating composition of the invention is excellent in the dispersibility of pigments and efficiency in the coating works therewith and capable of giving a coating film having improved adhesion to the substrate surface, surface luster, impact resistance and insusceptibility to stain.

REFERENCES:
patent: 4640966 (1987-02-01), Mitani et al.
Detroit Society for Painting Technology (pp. 30-37), 49th Annual Meeting of the Fed. Societies for Paint Technology, Detroit, Mich.

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