Blocked polyisocyanates with improved thermal stability

Details Blocked polyisocyanates with improved thermal stability Blocked polyisocyanates with improved thermal stability

1995-05-23

1996-04-09

Seidleck, James J.

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 73, 5483121, 5483137, 5483141, 5483144, 5483001, C08G 1877, C08G 1878, C08G 1880, C07D23378

Patent

active

055063276

ABSTRACT:
The present invention relates to blocked polyisocyanates containing at least two isocyanate groups which are reversibly blocked with a monofunctional blocking agent for isocyanate groups and at least two isocyanate groups in the form of thermally stable hydantoin groups. The present invention also relates to one-component coating compositions containing these blocked polyisocyanates and compounds containing at least two isocyanate-reactive groups.

REFERENCES:
patent: 3549599 (1970-12-01), Merten
patent: 3639418 (1972-02-01), Merten
patent: 5126170 (1992-06-01), Zwiener et al.
patent: 5236741 (1993-08-01), Zwiener et al.
patent: 5243012 (1993-09-01), Wicks et al.
patent: 5412056 (1995-05-01), Zwiener et al.

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