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
1979-02-12
1981-09-08
Cockeram, H. S.
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...
260453P, 528 44, 528 45, 528 52, 528 53, 528 54, 528 55, 528 56, 528 58, 528 73, 528 67, 528 51, C08G 1879, C08G 1880, C08G 1816
Patent
active
042885868
ABSTRACT:
The present invention relates to a new process for the preparation of polyisocyanates containing isocyanurate groups by the partial trimerization of the isocyanate groups of 1-isocyanato-3,3,5-trimethyl-5-isocyanatomethyl-cyclohexane (also known as isophorone diisocyanate and abbreviated IPDI), using catalysts which accelerate the trimerization of isocyanate groups, characterized in that the catalysts used are quaternary hydroxyalkyl ammonium hydroxides containing at least one hydroxyalkyl group. The present invention also relates to the polyisocyanates containing isocyanurate groups produced according to this process and to their use, optionally in the form of products which are blocked with blocking agents for isocyanate groups, as isocyanate components for polyurethane lacquers.
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Bock Manfred
Pedain Josef
Slawyk Wilhelm
Bayer Aktiengesellschaft
Cockeram H. S.
Harsh Gene
Pope Lawrence S.
Roy Thomas W.
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