Resin composition for powder coatings

Details Resin composition for powder coatings Resin composition for powder coatings

1991-03-25

1993-04-06

Short, Patricia A.

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

Synthetic resins

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

525166, 525176, 525934, 4273855, 427386, C08L 6702, C08L 3700, C08L 3314

Patent

active

052004660

ABSTRACT:
There is disclosed a resin composition for powder coatings, which comprises a blend of two acrylic resins obtained by polymerizing a prescribed amount of monomer component (a-1) represented by formula (I) and a prescribed amount of another monomer component (a-2), respectively, and having different polymerization degrees represented by viscosities at 140.degree. C. and a polybasic acid compound in 1.5 to 0.5 equivalent ratio of the glycidyl groups in said acrylic resins to the acid groups in the polybasic acid compound. ##STR1## wherein R.sub.1 and R.sub.2 each represent a hydrogen atom or a lower alkyl group. The resin composition for powder coatings can form a coating film having a mat smooth appearance and being excellent in flexibility as shown by Du Pont impact resistance and the Ericksen test as well as being excellent in nail scratch resistance.

REFERENCES:
patent: 3857905 (1974-12-01), Blackley
patent: 4499239 (1985-02-01), Murakami

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