Polyisocyanates, their production and uses

  • US 5,086,175 A
  • Filed: 12/18/1989
  • Issued: 02/04/1992
  • Est. Priority Date: 12/28/1988
  • Status: Expired due to Fees
First Claim
Patent Images

1. A polyisocyanate having an isocyanurate ring which can be diluted with a nonpolar solvent to a concentration of 75% or less and remains a clear homogeneous liquid without showing turbidity at 5°

  • C. and which is obtained by reacting a diisocyanate compound selected from the group consisting of alkylene, cycloalkylene and aralkylene diisocyanates with a monoalcohol of 10- to 50 carbon atoms in the presence of an isocyanuration catalyst, and removing the unreacted diisocyanate compound from the reaction mixture.

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