| 摘要 |
<p>An urethane foam material based on polyester and isocyanate components comprises polyesters of 500, 800, 2200 molar weight, polyetheres 3000, 5000 molar weight, tris-(dimethylaminomethyl)phenol as amine catalyst and stannum octoate as organo-tin catalyst, block copolymer of polydimethyl siloxane and alkylene oxides and paraffinic oil as foam stabilizers, polysaccharide and 2,4(2,6)-toluene diisocyanate. Exopolysaccharide is used as polysaccharide.</p> |
