Solutions of isocyanato-isocyanurates in plasticizers for polyvi

Details Solutions of isocyanato-isocyanurates in plasticizers for polyvi Solutions of isocyanato-isocyanurates in plasticizers for polyvi

1981-10-22

1985-05-21

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

1563314, 1563317, 524197, 525375, C08K 534

Patent

active

045187290

ABSTRACT:
The present invention relates to solutions of isocyanato-isocyanurates based on mixtures of (i) 2,4- and/or 2,6-diisocyanato-toluene and (ii) 2,2'-, 2,4'- and/or 4,4'-diisocyanato-diphenyl methane in a molar ratio of (i) to (ii) of about 5:1 to 1:3, in plasticizers for polyvinyl chloride wherein the isocyanato-isocyanurates comprise about 1 to 50% by weight of the solution. The present invention also relates to a process for preparing these solutions which comprise partially trimerizing the isocyanate groups of the above diisocyanates using catalysts which accelerate the trimerization of isocyanate groups, the reaction either being conducted in the presence of plasticizers for polyvinyl chloride or the reaction product being dissolved in a plasticizer of this type, optionally after the separation of excess, unreacted diisocyanate.
In addition, the present invention relates to the use of these solutions as adhesion-improving additives for coating compositions based on polyvinyl chloride. Besides improved adhesion, these compositions also demonstrate improved resistance to discoloration during thermal processing.

REFERENCES:
patent: 3454533 (1969-07-01), Kerrigan
patent: 3870665 (1975-03-01), Diehr
patent: 4115373 (1978-09-01), Henes et al.
patent: 4246132 (1981-01-01), Rainer et al.
patent: 4288586 (1981-09-01), Bock et al.
patent: 4306051 (1981-12-01), Rainer et al.
Soviet Inventions Illustrated, Section CH, Week B24 (Jul. 25, 1979), Derwent Publications Ltd., A25, SU-619-490 (Korshak).
Kunststoffe 68, 1978, pp. 735 et seq.
Kunststoffe 68, 1978, pp. 800 et seq.

Affiliated with

Also associated with

Rating

Solutions of isocyanato-isocyanurates in plasticizers for polyvi does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Solutions of isocyanato-isocyanurates in plasticizers for polyvi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solutions of isocyanato-isocyanurates in plasticizers for polyvi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1538873