| 摘要 |
<p>1519912 Polyether urethanes; antistatic polyamide BAYER AG 30 April 1976 [30 April 1975 (2)] 17666/76 Heading C3R [Also in Division C2] Polyether urethanes have the general formula: in which R<1> and R<11> are independently cycloaliphatic or aliphatic radicals, optionally con. taining at least one hetero atom, e.g. O or N; aralkyl radicals; or optionally alkyl substituted aromatic radicals. At least one of R<1> and R<11> is C10-30 alkyl. R<111> is C1-5 alkyl, cycloalkyl or aralkyl; n is 3 or more. Preferred compounds have the formula: where n is at least 4. I may be prepared by reacting a secondary amine R<1>-NH-R<11> with glycol carbonate and subsequently alkoxylating the intermediate obtained with either an alkylene oxide or glycol carbonate. I are useful as anti-static agents for polyamide from 0À5-15% by weight (based on the polyamide) may be used. An example relates to its use in a copolymer of e-caprolactam and e-aminocaproic acid.</p> |
