Thermosetting powder coating material

Details Thermosetting powder coating material Thermosetting powder coating material

1992-10-13

1993-06-29

Page, Thurman K.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524277, 524487, 524488, 524489, 524763, 524904, C08L 9106, C08L 9100

Patent

active

052235629

ABSTRACT:
A thermosetting powder coating composition comprises (a) a fluororesin having reactive group for crosslinking in the molecule which contains 10 weight % or more of fluorine and has glass transition temperature in the range from 35.degree. to 120.degree. C., (b) a hardener which can form crosslinking by reaction with the reactive group for crosslinking in the fluororesin (a) and (c) a synthetic wax or a natural wax. The amount of the fluororesin is in the range from 60 to 97 weight % and the amount of the hardener is in the range from 3 to 40 weight % based on the total of the fluororesin and the hardener. The amount of the synthetic wax or the natural wax is in the range from 0.01 to 10 weight parts based on 100 weight parts of the total of the fluororesin and the hardener. The coating layer formed from the thermosetting fluororesin powder coating composition has the same degree of water repellency and slipping property to those of the coating layer formed from polytetrafluoro-ethylene powder while the excellent weatherability, acid resistance and adhesion to substrates are retained.

REFERENCES:
patent: 4065419 (1977-12-01), Kawaguchi et al.
patent: 5130365 (1992-07-01), Koishi et al.

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