Preparation of low-viscosity, isocyanurate and urethane group-co

Details Preparation of low-viscosity, isocyanurate and urethane group-co Preparation of low-viscosity, isocyanurate and urethane group-co

1993-07-12

1994-11-29

Welsh, Maurice 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 52, 528 73, 544193, C08G 1880, C08G 1830

Patent

active

053692071

ABSTRACT:
A process for the preparation of isocyanurate and urethane group-containing and, if desired, uretdiode and allophanate group-containing polyisocyanate mixtures by partially cyclizing organic, preferably (cyclo)aliphatic diisocyanates, in the presence of trimerization catalysts, deactivating these catalysts, reacting the partially trimerized, isocyanurate and, if desired, uretdiode group-containing polyisocyanate mixture with 0.5 to 10 mol % of at least one aliphatic or cycloaliphatic alcohol and/or polyoxyalkylene alcohol, and separating off the monomeric diisocyanates.

REFERENCES:
patent: 4359541 (1982-11-01), Patton, Jr. et al.
patent: 4537961 (1985-08-01), Robin
patent: 4614785 (1986-09-01), Richter et al.
patent: 5144031 (1992-09-01), Pedain

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