- 专利标题: VINYL ACETATE BINDERS IN ABOVE-CRITICAL PIGMENT VOLUME CONCENTRATION COATINGS COMPOSITION
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申请号: EP14898686申请日: 2014-07-30
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公开(公告)号: EP3194458A4公开(公告)日: 2018-04-18
- 发明人: BOHLING JAMES C , CHEN JUNYU , NUNGESSER EDWIN , QIAN ZHEN , WANG TAO
- 申请人: DOW GLOBAL TECHNOLOGIES LLC , ROHM & HAAS
- 专利权人: DOW GLOBAL TECHNOLOGIES LLC,ROHM & HAAS
- 当前专利权人: DOW GLOBAL TECHNOLOGIES LLC,ROHM & HAAS
- 优先权: CN2014083285 2014-07-30
- 主分类号: C08F230/02
- IPC分类号: C08F230/02 ; C08F220/10 ; C09D133/04 ; C09D143/02
摘要:
The present invention is an above-critical coating composition comprising an aqueous dispersion of polymer particles, pigment particles, and extender particles wherein the polymer particles comprise, in a single phase and based on the weight of the polymer particles, from 35 to 79.9 weight percent structural units of vinyl acetate and from 0.1 to 6 weight percent structural units of a phosphorus acid monomer or a salt thereof, wherein the polymer particles have a particle size by dynamic light scattering of from 250 nm to 500 nm. The above-critical composition shows surprising improvements in hiding with increasing particle size of the polymer particles.
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