Thermosetting powder coating material and method

Details Thermosetting powder coating material and method Thermosetting powder coating material and method

1998-05-13

1999-12-07

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523330, 523332, 528501, C08J 312

Patent

active

059985070

ABSTRACT:
A method for preparing a thermosetting powder coating material comprising: dispersing and mixing a base resin and a crosslinking agent in a dispersing and/or mixing machine equipped with a decompression device at a temperature in the range of 40 to 200.degree. C., to form a dispersed mixture, the dispersed mixture optionally containing a solvent and a pigment; optionally eliminating at least a portion of the solvent under reduced pressure; adding water to the dispersed mixture; reducing the pressure and lowering the temperature of the dispersed mixture to a temperature equal to or less than the softening point of the dispersed mixture; and bringing the dispersed mixture into a powder state or a granule state by dispersion force of the dispersing and/or mixing machine.

REFERENCES:
patent: 3870684 (1975-03-01), Witt et al.
patent: 4402983 (1983-09-01), Craven
patent: 4945128 (1990-07-01), Hille
patent: 5075372 (1991-12-01), Hille
patent: 5270416 (1993-12-01), Toman
patent: 5354799 (1994-10-01), Bennett
patent: 5439896 (1995-08-01), Ito

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