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US 6,306,967 B1Granted
Solid, oxazoline-terminated, urethane-functional polyaddition compounds, a process for preparing them and their use
AssigneeDegussa-Huls AG
InventorsEmmanouil Spyrou, Andreas Wenning
Life of this patent
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Abstract
A solid, oxazoline-terminated, urethane-functional polyaddition compound having a melting point ranging from 40-130° C. and a free NCO content of less than 3% by weight, consisting essentially of a reaction product of a) at least one at least difunctional polyisocyanate and b) at least one hydroxy- or amino-functional oxazoline derivative, the ratio of NCO to OH equivalents ranging from 0.8:1.2 to 1.2:0.8.
Claims24
A solid, oxazoline-terminated, urethane-functional polyaddition compound having a melting point ranging from 40-130° C. and a free NCO content of less than 3% by weight, consisting essentially of:
- a reaction product of a) at least one at least difunctional polyisocyanate self reacted such that it contains isocyanurate groups and b) at least one hydroxy- or amino-functional oxazoline derivative of the formula:
- wherein R1-R6 are hydrogen atoms or alkyl groups having 1-4 carbon atoms, Y is hydroxy or amino and p is a number from 0-3 and wherein the ratio of NCO to OH or NH2 equivalents ranges from 0.8:1.2 to 1.2:0.8.
Dependencies are inferred from the claim text.