发明授权
US4754017A Process for the preparation of linear aliphatic polycarbonate from
cyclic aliphatic carbonate
失效
由环状脂肪族碳酸酯制备直链脂肪族聚碳酸酯的方法
- 专利标题： Process for the preparation of linear aliphatic polycarbonate from cyclic aliphatic carbonate
- 专利标题（中）： 由环状脂肪族碳酸酯制备直链脂肪族聚碳酸酯的方法
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申请号： US17879申请日： 1987-02-24
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公开(公告)号： US4754017A公开(公告)日： 1988-06-28
- 发明人: Edgar Leitz , Christian Lindner , Herbert Eichenauer , Karl-Heinz Ott , Hans-Josef Buysch , Peter Mues , Hartwig Hocker , Helmut Keul
- 申请人： Edgar Leitz , Christian Lindner , Herbert Eichenauer , Karl-Heinz Ott , Hans-Josef Buysch , Peter Mues , Hartwig Hocker , Helmut Keul
- 申请人地址： DEX Leverkusen
- 专利权人： Bayer Aktiengesellschaft
- 当前专利权人： Bayer Aktiengesellschaft
- 当前专利权人地址： DEX Leverkusen
- 优先权： DEX3607625 19860307
- 主分类号： C08G64/20
- IPC分类号： C08G64/20 ; C08G64/02 ; C08G64/30 ; C08G63/62
摘要：
Process for the polymerization of cyclic aliphatic carbonates in the presence of aprotic organic solvents with exclusion of atmospheric oxygen and atmospheric moisture, wherein organometallic compounds of elements of main group 1 of the periodic table are used as initiators, the monomer/solvent ratio is in the range from 1 part by weight to 50 parts by weight of monomer per 100 parts by weight of solvent and the polymerization temperature is between -100.degree. C. and +20.degree. C.
公开/授权文献
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