发明名称 |
PREPARATION OF LINEAR POLYESTER-POLYEPOXIDE REACTION PRODUCTS VIA REACTIVE CONCENTRATE |
摘要 |
Branched polyester compositions having high melt viscosities, especially under conditions of low shear, are prepared in a two-step method. The first step is the reaction of a linear polyester, polycarbonate or polyester-polycarbonate containing free carboxylic acid groups with a polyfunctional epoxyalkyl compound such as triglycidyl isocyanurate to form a reactive concentrate. The second step is the reaction of said reactive concentrate with a polyester, such as poly(ethylene terephthalate) or poly(butylene terephthalate), containing a measurable proportion of carboxylic acid end groups. By this two-step method, it is possible to use less epoxy compound for a given melt viscosity level than is the case when the epoxy compound is directly blended with the polyester. |
申请公布号 |
WO8808597(A1) |
申请公布日期 |
1988.11.03 |
申请号 |
WO1988US01368 |
申请日期 |
1988.04.26 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
BROWN, STERLING, BRUCE;HAN, CHOONG, YOL;DERUDDER, JAMES, LOUIS;HEPP, LEONARD, RICHARD |
分类号 |
C08L67/02;C08G59/42;C08G63/91;C08G69/48;C08G81/00;C08L63/00;C08L67/00;(IPC1-7):C08L67/02 |
主分类号 |
C08L67/02 |
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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