Powder coating composition

Details Powder coating composition Powder coating composition

1994-10-31

1996-06-04

Marquis, Melvyn I.

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

Synthetic resins

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

525194, C08L 3700, C08L 6302

Patent

active

055233490

ABSTRACT:
A powder coating composition contains acrylic resin (A) containing at least 40 percent by weight of a glycidyl-group-containing monomer and having a solubility parameter which is in the range of 11.0 to 11.6 and a glass transition temperature of at least 20.degree. C., a surface modifier (B) consisting of a polymer having a solubility parameter which is in the range of 10.4 to 11.0, and polyvalent carboxylic acid (B). The surface modifier (B) is in a content of 0.1 to 4 parts by weight with respect to a total content of 100 parts by weight of the acrylic resin (A) and the polyvalent carboxylic acid (C), while the components are so mixed with each other that the amount of carboxylic groups contained in the polyvalent carboxylic acid (C) is at an equivalence ratio of at least 0.5 to the amount of glycidyl groups contained in the acrylic resin (A).

REFERENCES:
patent: 4091049 (1978-05-01), Labana et al.
patent: 5034432 (1991-07-01), Ueno et al.

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