POLYCONDENSATION CATALYST FOR POLYESTER PRODUCTION AND PRODUCTION OF POLYESTER,申请号EP20060767872-传众专利搜索

POLYCONDENSATION CATALYST FOR POLYESTER PRODUCTION AND PRODUCTION OF POLYESTER

申请公布号：EP1972650(A1)

申请号：EP20060767872

申请日期：2006.06.28

申请公布日期：2008.09.24

申请人：

SAKAI CHEMICAL INDUSTRY CO., LTD.

发明人：UMABA, TOSHIKATSU;SHIMIZU, HIROMITSU;MORI, KENJI;TABATA, KEIICHI

分类号：C08G63/85;C08G63/12

主分类号：C08G63/85

摘要：The invention provides a polycondensation catalyst for producing polyester by an esterification reaction or a transesterification reaction between a dicarboxylic acid or ester-forming derivative thereof and a glycol, wherein the polycondensation catalyst comprises particles of a solid base having on their surfaces either a coat layer of titanic acid in an amount of from 0.1 to 50 parts by weight in terms of TiO 2 per 100 parts by weight of the solid base, or an inner coat layer of an oxide of at least one element selected from silicon, aluminum and zirconium or a composite oxide of at least two elements selected from silicon, aluminum and zirconium in an amount of from 1 to 20 parts by weight per 100 parts by weight of the solid base and an outer coat layer of titanic acid in an amount of from 0.1 to 50 parts by weight in terms of TiO 2 per 100 parts by weight of the solid base