发明名称 |
VERFAHREN ZUR HERSTELLUNG VON HYPERVERZWEIGTEN POLYMEREN |
摘要 |
A method is provided for producing hyperbranched polymers comprising heating a polymerizable reaction charge comprising (a) a monomer mixture comprising 50-99.1% by weight of at least one monoethylenically unsaturated monomer and 0.1-50% by weight of one or more multiethylenically unsaturated monomers and (b) if at least one ethylenically unsaturated monomer of the monomer mixture is not a thermally initiating monomer, a free radical polymerization initiator, to a temperature in the range from about 250� C. to about 400� C. in a continuous reactor which allows mixing of the reactor contents for a residence time of from about 2 minutes to about 60 minutes, provided that if the total amount of multiethylenically unsaturated monomer is less than 3% by weight of the monomer mixture than at least one of said one or more multiethylenically unsaturated monomers must be tri- or greater ethylenically unsaturated. The hyperbranched polymers prepared by this process are also described. |
申请公布号 |
DE69809247(T2) |
申请公布日期 |
2003.07.24 |
申请号 |
DE1998609247T |
申请日期 |
1998.08.04 |
申请人 |
JOHNSONDIVERSEY,INC |
发明人 |
CAMPBELL, DAVID;TEYMOUR, FOUAD |
分类号 |
C08F2/01;B01J19/24;C08F2/00;C08F2/02;C08F212/04;(IPC1-7):C08F212/04 |
主分类号 |
C08F2/01 |
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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