发明名称 |
Dense star polymers and a process for producing dense star polymers. |
摘要 |
<p>This invention is directed to dense star polymers and to a process for producing dense star polymers. The star polymers of this invention have at least one core branch eminating from a core, each core branch having at least one terminal group provided that (1) the ratio of terminal groups to the core branches is greater than 1 : 1, (2) the density of terminal groups per unit volume in the polymer is at least 1.5 times that of conventional star polymer having similar core and monomeric moieties and a comparable molecular weight and number of core branches, each of such branches of the conventional star polymer bearing only one terminal group and (3) a molecular volume that is no more than 60 percent of the molecular volume of said conventional star polymer. Such star polymers are useful as demulsifiers for oil/water emulsions, wet strength agents in the manufacture of paper and agents for modifying viscosity in aqueous formulations such as paints.</p> |
申请公布号 |
EP0115771(A2) |
申请公布日期 |
1984.08.15 |
申请号 |
EP19840100080 |
申请日期 |
1984.01.05 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
TOMALIA, DONALD A.;DEWALD, JAMES R. |
分类号 |
C08G69/02;A61K47/48;B01D17/04;C07C231/02;C07C231/12;C07C233/78;C07C237/10;C08G63/02;C08G65/28;C08G65/38;C08G69/00;C08G69/44;C08G69/48;C08G73/00;C08G73/02;C08G75/00;C08G75/02;C08G75/20;C08G83/00;C08G85/00;C09D7/00;C09D201/00;C10G33/04;(IPC1-7):08G73/02;08G69/44;08G63/68;08F283/00;08G81/00 |
主分类号 |
C08G69/02 |
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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