Method for preparing powder coating compositions having improved

Details Method for preparing powder coating compositions having improved Method for preparing powder coating compositions having improved

1994-04-13

1995-12-05

Theisen, Mary Lynn

Plastic and nonmetallic article shaping or treating: processes

Spheroidizing or rounding of solid particles

B29C 6700

Patent

active

054726492

ABSTRACT:
A method of preparing a powder coating composition comprises: (a) forming a mixture comprising solid particles which include a curable resin and a cross-linking agent that is reactive with the curable resin suspended in an aqueous liquid phase comprising water, a surfactant, a stabilizer, and a promoter; (b) warming the mixture to a temperature sufficient to effect reshaping and rounding of the particles; (c) separating the particles from the liquid phase; and (d) drying the particles to form a powder.

REFERENCES:
patent: 3674736 (1972-07-01), Lerman et al.
patent: 3896196 (1975-07-01), Dickey et al.
patent: 4154871 (1979-05-01), White et al.
patent: 4243794 (1981-01-01), White et al.
patent: 4833060 (1989-05-01), Nair et al.
patent: 4863646 (1989-09-01), Watanabe et al.
patent: 5244944 (1993-09-01), Bott et al.

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