发明名称 |
Process for control of molecular weight distribution in polymers. |
摘要 |
<p>This invention provides a polymerization process for producing polymers with narrow molecular weight distributions. It comprises addition of monomer and initiator to a reaction vessel using a monomer feed profile and an initiator feed profile wherein the feed profiles are such that the ratio of monomer concentration to initiator concentration is determined in accordance with a polymerization kinetics relationship between a selected degree of polymerization and monomer concentration, initiator concentration, reaction temperature and a polymerization efficiency factor to obtain an approximately constant degree of polymerization for polymer produced during the polymerization process. The polymerization efficiency factor accounts for deviations from ideal kinetics relationships.</p> |
申请公布号 |
EP0561078(A2) |
申请公布日期 |
1993.09.22 |
申请号 |
EP19920309771 |
申请日期 |
1992.10.26 |
申请人 |
ROHM AND HAAS COMPANY |
发明人 |
SHERVIN, CARL RANDE;WETTERWALD, PHILIPPE PAUL ROBERT |
分类号 |
C08F2/00;C08F20/18 |
主分类号 |
C08F2/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|