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...
Patent
1989-04-21
1990-10-02
Kight, III, John
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 45, 528 52, 528 59, 528 65, 502164, C08G 1816
Patent
active
049608487
ABSTRACT:
The present invention is directed to a process for the production of isocyanurate polyisocyanates containing aliphatically and/or cycloaliphatically bound isocyanate groups by trimerizing a portion of the isocyanate groups of organic diisocyanates containing aliphatically and/or cycloaliphatically bound isocyanate groups in the presence of a trimerization catalyst and terminating the trimerization reaction at the desired degree of trimerization by the addition of a catalyst poison, characterized in the quaternary ammonium fluorides are used as the catalyst.
The present invention is also directed to the use of these isocyanurate polyisocyanates for the production of polyurethane lacquers.
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J. H. Saunders, K. C. Frisch, Polyurethanes Chemistry and Technology, pp. 94 et seq., 1962, Part I.
Pedain Josef
Scholl Hans J.
Bayer Aktiengesellschaft
Gil Joseph C.
Kight III John
Roy Thomas W.
Sridharan Anang
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