发明名称 |
Polyacrylonitriles with a low K value |
摘要 |
The invention relates to homopolymers and copolymers of acrylonitrile with very low Fikentscher K values of 34-15 and a total content of sulfonate and sulfate end groups, which do not originate from correspondingly substituted comonomers, of 250 to 1,000 milliequivalents per kilogram of polymer, 180 to 900 milliequivalents per kilogram being in the form of sulfonate end groups, and to suitable semi-continuous or continuous precipitation polymerization processes for their preparation by means of a redox system in an aqueous medium. The resulting polymers can be extruded to shaped articles. In particular, after hydrolysis, they can be used as emulsifiers and deep bore auxiliaries.
|
申请公布号 |
US4673721(A) |
申请公布日期 |
1987.06.16 |
申请号 |
US19860839288 |
申请日期 |
1986.03.13 |
申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
KRAKKAY, TIBOR;POGGI, TATJANA;SCHUBERT, ERNST |
分类号 |
C08L33/20;B01F17/52;C08F4/00;C08F4/40;C08F20/42;C08F20/44;C08F120/44;C08F220/42;C08F220/44;C08L33/00;C08L33/02;C08L33/18;C09K8/04;C09K8/58;(IPC1-7):C08F20/44 |
主分类号 |
C08L33/20 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|