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Isocyanurate polyisocyanate and its use as a curing agent for a two-component polyurethane composition

  • US 4,801,663 A
  • Filed: 03/29/1988
  • Issued: 01/31/1989
  • Est. Priority Date: 04/03/1987
  • Status: Expired due to Term
First Claim
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1. An isocyanurate polyisocyanate comprising:

  • (a) at least 60% by weight, based on the total weight of the components (a), (b) and (c), of N,N'"'"',N"-tris(6-isocyanatohexyl)-isocyanurate,(b) from 0 to 10% by weight, based on the total weight of the components (a), (b) and (c), of N,N'"'"'-bis(6-isocyanatohexyl)-uretodione, and(c) 40% by weight or less, based on the total weightof the components (a), (b) and (c), of poly(6-isocyanatohexyl)-isocyanurate,said polyisocyanate having a viscosity of 1600 cps or less as measured at 25°

    C.

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