发明名称 |
PRODUCTION OF BRANCHED POLYESTERS. |
摘要 |
<p>Disclosed is an improvement in a process for producing branched polyesters wherein a precursor polyester is first formed and subsequently the precursor polyester is formed into particles and further polymerized in the solid state, wherein the improvement comprises contacting the particles while at a temperature of about 140 DEG to about 2 DEG C. below the melting point of the polyester with the vapor of water or an organic compound having at least one OH group.</p> |
申请公布号 |
GR3025423(T3) |
申请公布日期 |
1998.02.27 |
申请号 |
GR19970403068T |
申请日期 |
1997.11.19 |
申请人 |
EASTMAN CHEMICAL COMPANY |
发明人 |
YAU, CHEUK, CHUNG;CHERRY, CLINTON |
分类号 |
C08G63/78;C08G63/80;(IPC1-7):C08G63/80 |
主分类号 |
C08G63/78 |
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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