发明名称 |
WATERBORNE POLYESTERS HAVING IMPROVED SAPONIFICATION RESISTANCE |
摘要 |
Substituted polycarboxylic acids or substituted anhydrides as acidifying agents stabilize a waterborne polyester from saponification, provided: (a) the acidification is carried out to an extent sufficient to provide an acid number of at least 40 milligrams KOH per gram of polyester resin; and (b) the substitution on the polycarboxylic acid or anhydride is either an alkenyl group having at least four carbon atoms or a cyclic group in which the ring is not aromatic. The relatively high acid number renders the polyester dispersible in water without the need to rely on surfactants.
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申请公布号 |
WO9509880(A1) |
申请公布日期 |
1995.04.13 |
申请号 |
WO1994US07634 |
申请日期 |
1994.07.07 |
申请人 |
PPG INDUSTRIES, INC. |
发明人 |
SUNDARARAMAN, PADMANABHAN;AMBROSE, RONALD, R.;CAMP, DOUGLAS, R.;WILT, TRUMAN F. |
分类号 |
C08G63/199;C08G63/52;C08G63/553;C09D167/00;C09D167/06;(IPC1-7):C08G63/52 |
主分类号 |
C08G63/199 |
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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