Radiation curable powder coatings for heat sensitive substrates

Details Radiation curable powder coatings for heat sensitive substrates Radiation curable powder coatings for heat sensitive substrates

1996-04-12

1999-03-02

McCamish, Marion

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

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

522 64, 522 65, 522 68, 522 14, 522 17, C08F 250

Patent

active

058772316

ABSTRACT:
Powder coatings are described which are curable by means of exposure to radiation, typically ultraviolet radiation, in a form suitable for deposition onto substrates, typically by means of electrostatic deposition. It is expected that such powder coatings would be particularly useful in coating heat sensitive substrates since the necessity for heating the powder coating to elevated temperatures is not necessary to effect cure. Free radical curing coatings are described using specific chemical formulations of acrylourethane resins, unsaturated polyester resins and mixtures thereof in combination with morpholino containing photoinitiators, phenol containing photoinitiators, and ketal containing photoinitiators.

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