| 发明名称 |
Polyester compositions containing residues of dihydroxyalkoxy coumarins |
| 摘要 |
UV stable linear polyesters, e.g. polyethylene terephthalate, contain in their chain copolymerized esterification residues of di(hydroxyalkoxy)coumarins. The polyesters are useful for making biaxially oriented films. The polyesters can be made by polycondensation in the presence of 4-methyl-6,7-dihydroxy-coumarin.
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| 申请公布号 |
US4347350(A) |
申请公布日期 |
1982.08.31 |
| 申请号 |
US19800210755 |
申请日期 |
1980.11.28 |
| 申请人 |
IMPERIAL CHEMICAL INDUSTRIES LIMITED |
发明人 |
HORNER, PATRICK J.;RASHBROOK, ROBERT B. |
| 分类号 |
C08G63/00;C08G63/66;C08G63/672;C08G63/91;(IPC1-7):C08G63/66 |
主分类号 |
C08G63/00 |
| 代理机构 |
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