Uretdione-functional polyisocyanates, a process for their prepar

Details Uretdione-functional polyisocyanates, a process for their prepar Uretdione-functional polyisocyanates, a process for their prepar

1997-09-11

1998-12-08

Gupta, Yogendra N.

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...

540202, 524 86, 528 44, 528 68, 528 73, 528 87, 528110, C08G 1881, C07G22900

Patent

active

058470670

ABSTRACT:
Urea- and uretdione-functional polyisocyanates having the following formula (I): ##STR1## where ##STR2## n is an integer of from 1 to 20; R.sup.1, R.sup.3 =not more than one linear or branched (cyclo)alkyl radical having 1-14 carbon atoms or H and at least one of the formula: ##STR3## R.sup.2 =R, linear or branched (cyclo)alkyl radical having 6 carbon atoms; R.sup.4, R.sup.5 =identical or different hydrocarbon radicals having 1 to 14 carbon atoms.

REFERENCES:
patent: 3943158 (1976-03-01), Dietrich et al.
patent: 4520186 (1985-05-01), Hess et al.
patent: 4668780 (1987-05-01), Disterldorf et al.
patent: 5216107 (1993-06-01), Pedain et al.

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