发明授权
- 专利标题： Crosslinkable protective colloids for use in the polymerization of unsaturated monomers
- 专利标题（中）： 用于不饱和单体聚合的可交联保护胶体
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申请号： US09142235申请日： 1998-09-03
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公开(公告)号： US06316568B1公开(公告)日： 2001-11-13
- 发明人: Klaus Kohlammer , Gerhard Koegler , Monika Rockinger , Walter Dobler
- 申请人： Klaus Kohlammer , Gerhard Koegler , Monika Rockinger , Walter Dobler
- 优先权： DE19608911 19960307
- 主分类号： G08F1230
- IPC分类号： G08F1230
摘要：
A water-soluble, crosslinkable protective colloid is provided having a weight-average molecular weight of least than 500,000 comprising: a) 20 to 95% by weight of monomer units containing sulphonic acid or sulphonate groups, b) 4 to 80% by weight of monomer units containing N-methylol or N-alkoxymethyl groups, and c) 0.1 to 20% by weight of hydrophobic monomer units such as water insoluble ethylenically unsaturated compounds and the hydrophobic end groups of initiator radicals or regulator molecules. Optionally, up to 50% by weight of the monomer units containing sulphonic acid or sulphonate groups can be replaced by monomer units containing carboxyl groups or monomer units containing amide groups.
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