发明授权
US3557058A Process for obtaining polyoxymethylenes having controlled molecular weight and products obtained therefrom
失效
获得具有受控分子量的聚甲基丙烯酰胺的方法和获得的产物
- 专利标题： Process for obtaining polyoxymethylenes having controlled molecular weight and products obtained therefrom
- 专利标题（中）： 获得具有受控分子量的聚甲基丙烯酰胺的方法和获得的产物
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申请号： US3557058D申请日： 1968-04-16
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公开(公告)号： US3557058A公开(公告)日： 1971-01-19
- 发明人: FIORE LEONARDO , NISSIM GIORGIO , CRESPI ELIO
- 申请人： MONTEDISON SPA
- 专利权人： Montedison Spa
- 当前专利权人： Montedison Spa
- 优先权： IT1510967 1967-04-19
- 主分类号： C08G2/00
- IPC分类号： C08G2/00 ; C08G2/04 ; C08G1/04 ; C08G1/22
摘要：
MODIFIED OXYMETHYLENE HOMOPOLYMERS AND COPOLYMERS HAVING PARTICULAR TERMINAL GROUPS AND CHARACTERIZED BY CONTROLLED MOLECULAR WEIGHT AND INCREASED THERMAL STABILITY ARE OBTAINED BY POLYMERIZING TRIOXANE OR MIXTURES THEREOF WITH OTHER MONOMERS IN THE PRESENCE OF PARTICULAR CHAIN-TRANSFER AGENTS.
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