发明名称 |
METHOD FOR CONTROLLING SIZE DISTRIBUTION OF POLYMER PARTICLES DURING PREPARATION OF AQUEOUS POLYMER DISPERSION, AQUEOUS POLYMER DISPERSION AND ITS USE |
摘要 |
The present disclosure relates to a method for controlling size distribution of formed polymer particles during preparation of aqueous polymer dispersion. The method comprises obtaining an aqueous polysaccharide solution, which comprises about 10 to 40 weight-% polysaccharide containing a free hydroxyl group, such as starch, and polymerising in the polysaccharide solution in the presence of a graft-linking, water-soluble redox system about 30 to 60 weight-% of at least one optionally substituted styrene, about 60 to 30 weight-% of at least one C1-C4-alkyl(meth)acrylate, and 0 to about 10 weight-% of other ethylenically unsaturated copolymerizable monomers. The size distribution of the formed polymer particles is controlled by adjusting viscosity of the polysaccharide solution before the polymerisation to a level less than about 20 mPas. |
申请公布号 |
EP2802611(A1) |
申请公布日期 |
2014.11.19 |
申请号 |
EP20130701675 |
申请日期 |
2013.01.11 |
申请人 |
KEMIRA OYJ |
发明人 |
PEURANEN, HELENA;HEISKA, PERTTU;HUHTALA, KIMMO;BRUUN, NINA |
分类号 |
C08F251/00;C08F2/20;C08F212/08;C08F220/18;C08K3/20;D21H17/24;D21H17/36;D21H17/37;D21H21/16 |
主分类号 |
C08F251/00 |
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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