專利名稱:Modified polyesters and processes for manufacturing the same(EP發明專利第2518097號)
專利授權與讓售
年度(國民年)(Year):103 | |
核准國家(Country):EP | |
專利名稱(Title):Modified polyesters and processes for manufacturing the same | |
證書號碼(Number):2518097 | |
專利類型(Type):Invention | |
專利期間(Term):2011-05-25~2031-05-25 | |
摘要 (Abstract) |
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Disclosed herein are processes for manufacturing modified polyesters. An esterification reaction of diacid, diol and a branching agent having at least three carboxyl groups is carried out at a temperature of about 180 to 300°C and a pressure of about 1 to 4 bar to obtain a product of esterification. A polycondensation reaction of the product of esterification and a diamine is carried out at a pressure below about 0.01 bars to obtain the modified polyester. |