Liquid catalysts for rapid polymerization of liquid compositions bases on polyisocyanates and epoxides
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United States of America Patent
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Feb 22, 1994
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N/A
app pub date -
May 20, 1992
filing date -
May 22, 1991
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Expired
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Abstract
The present invention relates to quaternary .beta.-hydroxy-alkyl-ammonium halides and quaternary .beta.-hydroxy-cycloalkylammonium halides, which are liquid at temperatures lower than 60.degree. C., are easily and rapidly miscible in liquid epoxides, as well as in liquid poly-isocianates, generating liquid compositions which spontaneously polymerize, with fast polymerization rate, already at temperatures comprised within the range of from 0.degree. C. to 60.degree. C., yielding a solid, insoluble polymeric material endowed with very high values of softening temperature.
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