发明名称 |
Trisstannoxanes useful for polymerizing macrocyclic poly(alkylene dicarboxylate) oligomers |
摘要 |
Novel trisstannoxanes are prepared by the reaction of a dialkyltin oxide with a trihydroxy compound such as 1,1,1-tris(hydroxymethyl)propane. They may be employed as catalysts for the preparation of branched polyesters from macrocyclic polyester oligomers. They are less susceptible than previously known catalysts to the presence of acidic impurities in the oligomer compositions.
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申请公布号 |
US5386037(A) |
申请公布日期 |
1995.01.31 |
申请号 |
US19940262793 |
申请日期 |
1994.06.20 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
TAKEKOSHI, TOHRU;PEARCE, ERIC J. |
分类号 |
C07F7/22;C08G63/00;C08G63/12;C08G63/85;(IPC1-7):C07F7/22 |
主分类号 |
C07F7/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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