Rapid setting polyurethane elastomers and process of preparation

摘要: Rapid setting polyurethanes are prepared from polyols having a functionality of 2 to 8, polyisocyanate, non-amine containing catalyst and as modifier, polymer an ethyleniclly unsaturated monomer said the following characteristics: (1) molecular weight such that has grease melt flow index determined with 0.02 inch orifice employing total 2160 grams at 80° C about 1 250 decigrams/minute; (2) solubility parameter 25° least 8; (3) specific heat 0.35 cal/g/° C.