发明名称 |
Water-based autoxidisable coating composition. |
摘要 |
<p>A water-based autoxidisable coating composition, especially a gloss or partial gloss coating composition (eg paint, varnish, woodstain or timber preservative) suitable for application at ambient temperatures which comprises water, minimal organic cosolvent and a partially esterified carboxylic acid film-forming copolymer at least partially neutralised by monovalent cations wherein the copolymer contains added 3-allyloxy-2-hydroxypropyl groups or certain analogues derived from addition of allyl glycidyl ether or certain of its analogues to carboxylic acid groups, in a copolymeric backbone portion derivable from a prepolymer of weight average molecular weight less than 30 000. The partially esterified copolymer has an acid value of 25 to 60 and preferably a dynamic solution viscosity of 1 to 500 Pa.sec measured in 1-methoxy-2-hydroxy propane by oscillatory parallel plate rheometer. The coatings lap well, dry quickly and achieve acceptable water resistance. Also the optionally unneutralised copolymer and the coating composition when containing a minor amount of particulate copolymer which is found to improve gloss. Discolouration on ageing may be improved by neutralising with Group 1 metal cations.</p> |
申请公布号 |
EP0425085(A1) |
申请公布日期 |
1991.05.02 |
申请号 |
EP19900309826 |
申请日期 |
1990.09.07 |
申请人 |
IMPERIAL CHEMICAL INDUSTRIES PLC |
发明人 |
TAYLOR, PHILIP LOUIS;GOSLING, JULIAN JOHN;BROMLEY, CHARLES WILLIAM ALFRED;NICKS, PETER FRANCIS |
分类号 |
C09D5/00;C08F8/14;C09D133/02 |
主分类号 |
C09D5/00 |
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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