| 摘要 |
PURPOSE:To obtain the title elastomer improved in heat resistance, by subjecting a polyol and a polyisocyanate to a precuring reaction in the presence of a specified organometallic compound and a molecular sieve and postcuring the product. CONSTITUTION:The title elastomer is an ultrasoft polyurethane elastomer which is obtained by performing a precuring reaction in the presence of at least one compound selected from among organometallic compounds of nickel, manganese, iron, copper, zinc and cerium and a molecular sieve and performing a postcuring reaction in the production of a polyurethane elastomer by reacting a polyol with a polyisocyanate. Said organometallic compounds are metallic compounds of acetylacetone, aliphatic, alicyclic or aromatic carboxylic acids and phenol derivatives. The organometallic compound and the molecular sieve are used in amounts of about 0.01-5.0pts.wt. and about 1-15pts.wt. per 100pts.wt. polyol, respectively.
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