发明名称 |
Process for the preparation of polybutylene terephthalate |
摘要 |
In the two stage reaction of terephthalic acid with 1,4-butanediol to produce polybutylene terephthalate in which acid and diol are first subjected to catalytic esterification/oligomerization and the resulting products are thereafter subjected to catalytic polycondensation, the co-production of tetrahydrofuran is significantly reduced by conducting the polycondensation reaction prior to completion of the esterification/oligomerization reaction.
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申请公布号 |
US4346213(A) |
申请公布日期 |
1982.08.24 |
申请号 |
US19800181275 |
申请日期 |
1980.08.25 |
申请人 |
CELANESE CORPORATION |
发明人 |
HALL, JR., HENRY K.;PADIAS, ANNE B. |
分类号 |
C08G63/00;C08G63/66;C08G63/78;C08G63/85;(IPC1-7):C08G63/34 |
主分类号 |
C08G63/00 |
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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