| 发明名称 |
Color improvement and acetaldehyde reduction in high molecular weight polyesters |
| 摘要 |
This invention relates to a method of improving the brightness and color of a polyester resin and reducing the acetaldehyde content by passing the resin through molecular sieves at a temperature of from 230 DEG C. to about 300 DEG C.
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| 申请公布号 |
US4391971(A) |
申请公布日期 |
1983.07.05 |
| 申请号 |
US19810334769 |
申请日期 |
1981.12.28 |
| 申请人 |
THE GOODYEAR TIRE & RUBBER COMPANY |
发明人 |
MASSEY, FREDDIE L.;CALLANDER, DOUGLAS D. |
| 分类号 |
B29B13/00;B29C47/00;C08G63/90;(IPC1-7):C08G63/70 |
主分类号 |
B29B13/00 |
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