Finely divided coating agent containing polymers having hydroxyl

Details Finely divided coating agent containing polymers having hydroxyl Finely divided coating agent containing polymers having hydroxyl

1985-06-06

1987-04-14

Welsh, Maurice J.

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...

428417, 428418, 428419, 4284231, 4284251, 4284256, 4284258, 525124, 525440, 525452, 525453, 525454, 525455, 525459, 525460, 528 45, C08G 1880

Patent

active

046579621

ABSTRACT:
Finely divided coating agents based on (A) oligomers and/or polymers containing OH groups and (B) blocked polyisocyanates and, if required, further conventional additives, in which the component (B) contains at least one acylurethane possessing groups of the formula --CO--NH--CO--XR.sup.1 (I), wherein X represents oxygen or nitrogen, and, when X is oxygen, R.sup.1 represents alkyl, alkoxyalkyl, hydroxyalkyl, aryl, aralkyl or cycloalkyl, and, when X is nitrogen, the radical XR.sup.1 represents the group ##STR1## wherein R.sup.2 is C.sub.1-11 -alkylene, C.sub.1-11 -alkenylene, or unsubstituted or alkyl-substituted phenylene having up to 8 carbon atoms in the alkyl radical, and Y and Z together form an oxygen atom, or are identical or different and each denote hydrogen or C.sub.1-5 -alkyl, the coating agent being present in powder form or in the form of a dispersion. The coating agent is used for coating articles exposed to weather, and as top coats and primers.

REFERENCES:
patent: 4355058 (1982-10-01), Gras et al.
patent: 4395529 (1983-07-01), Panandiker et al.
patent: 4500696 (1985-02-01), Gras

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