Patent Number: 6,333,380

Title: Thermosetting resin composition for powder paint and thermosetting powder paint composition using the same

Abstract: There are disclosed a thermosetting resin composition for a powder paint in which a resin composition component (A) is a (block) copolymer obtained by allowing a vinyl-based polymer G (branch) block (component (a-1)) to graft-react with a vinyl-based polymer S (back bone) block (component (a-2)), and if the solubility parameters of the components (a-1) and (a-2) are represented by SP.sub.G and SP.sub.G, respectively, SP.sub.G and SP.sub.S satisfy the following numerical formula (I), and a thermosetting powder paint composition comprising a resin composition component (A) and a hardener composition component (B) wherein the component (A) is said thermosetting resin composition for a powder paint. By these compositions, a thermosetting powder paint composition having excellent storage stabilities, appearance properties, physical properties and chemical properties can be provided. Particularly, there can be provided a thermosetting powder paint composition suitably applied to painting of bodies of vehicles such as automobiles and parts of vehicles such as automobiles (aluminum wheel, wiper, pillar, door handle, fender, bonnet, air spoiler, stabilizer, front grill and the like), particularly, to top painting.

Inventors: Sakayama; Hiroyuki (Kanagawa, JP), Kikuta; Yoshio (Kanagawa, JP), Mizoguchi; Mitsuyuki (Kanagawa, JP), Miyawaki; Takahisa (Kanagawa, JP), Matsumoto; Tsuyoshi (Kanagawa, JP)

Assignee: Mitsui Chemicals, Inc.

International Classification: C08G 81/02 (20060101); C08G 81/00 (20060101); C08G 063/48 (); C08F 283/04 (); C08F 118/02 ()

Expiration Date: 12/25/2018