发明名称 PROCESS FOR THE PREPARATION OF AN ESTER FROM STARCH AND A MONOCARBOXYLIC ACID, AND A COMPOSITION BASED ON THE STARCH ESTER THUS PREPARED
摘要 Preparation of a starch ester having an Mn of 1000-50,000 and a degree of substitution of 0.4-3.0 by heating a mixture of starch, a Cl-7 monocarboxylic acid, water, and optionally a catalyst and meanwhile withdrawing water until the ester being formed has attained the desired degree of substitution. Optionally remaining free hydroxyl groups may be esterified by reaction with a carboxylic anhydride of -halide. The resulting solution may be treated to neutralize remaining free monocarboxylic acid by mixing it with an esterifiable hydroxyl compound and esterifying it at 40 DEG -270 DEG under the removal of water. In this way, use is made of cheap ingredients, and the resulting product is suitable for immediate use in a number of applications, e.g., as binder in coating compositions.
申请公布号 DE3663670(D1) 申请公布日期 1989.07.06
申请号 DE19863663670 申请日期 1986.04.14
申请人 AKZO N.V. 发明人 SCHOUTEN, AREND JAN
分类号 C08B3/00;C08B31/04;C09D103/06;(IPC1-7):C08B31/04;C08L3/06;C09D3/20 主分类号 C08B3/00
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