发明名称 |
PROCESS FOR OBTAINING LOW FREE MONOMER LEVELS IN A BLOCK COPOLYMER EMULSION PREPARED WITH (REVERSE) IODINE TRANSFER POLYMERISATION |
摘要 |
A process for obtaining an aqueous emulsion comprising a block copolymer by the solution polymerisation of vinyl monomers to obtain block [B] in the presence of a) a radical precursor; and b) an iodine atom containing block [A]; where block [A] and [B] together comprise 0 to 2 wt % of methacrylic acid; where block [A] and block [B] together comprise ≧2.5 wt % of vinyl monomers bearing ionic or potentially ionic water-dispersing groups not including methacrylic acid; and performing a post polymerisation reaction on the block copolymer emulsion obtained in step II; and wherein said aqueous emulsion has a free vinyl monomer level <1000 ppm when having a solids content of ≧20 wt %.
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申请公布号 |
US2013030118(A1) |
申请公布日期 |
2013.01.31 |
申请号 |
US201213648080 |
申请日期 |
2012.10.09 |
申请人 |
DSM IP ASSETS B.V.;NABUURS TIJS;OVERBEEK GERARDUS CORNELIS;SCHELLEKENS MICHAEL ARNOLDUS JACOBUS;VISSER DANNY;VAES FRANK |
发明人 |
NABUURS TIJS;OVERBEEK GERARDUS CORNELIS;SCHELLEKENS MICHAEL ARNOLDUS JACOBUS;VISSER DANNY;VAES FRANK |
分类号 |
C08L53/00;C08F2/10 |
主分类号 |
C08L53/00 |
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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