| 摘要 |
<p>Method for preparing compact, cellulosic-containing shaped articles (A) by reaction of organic polyisocyanates (I), optionally modified, with cellulosic (II), particularly lignocellulose, in presence of a mold-release agent (X) in an open or closed molding tool. The new feature is that (X) is a siloxane compound containing aminopropyl groups. Method for preparing compact, cellulosic containing shaped articles (A) by reaction of organic polyisocyanates (I), optionally modified, with cellulose (II), particularly lignocellulose, in presence of a mold-release agent (X) in an open or closed molding tool. The new feature is that (X) is a siloxane compound containing aminopropyl groups and of formula (I) R 1>-SiMe 2-O-(SiMe 2-O-) n-(R 2>SiMe-O-) m-(R 4>SiMe-O-) k-SiMe 2-R 1> (I) R 1>Me or R 2>; R 2>(CH 2) x-NHR 3> and/or -(O) y-(CH 2) x-NHR 3>'; R 3> and R 3>' : hydrogen or (CH 2) xNH 2; R 4>-(CH 2) x-NH-(CH 2CH 2O) z-R 5>; R 5>aryl or alkyl; n : 50-1000; m : 0-20, with m:n = 0-0.4; k : 0-20; x and z : 1-20; y : 0 or 1.</p> |
