发明授权
- 专利标题: Symmetric azo-bis-mercapto compounds
- 专利标题(中): 对称偶氮双巯基化合物
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申请号: US678699申请日: 1976-04-20
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公开(公告)号: US4059574A公开(公告)日: 1977-11-22
- 发明人: Otto Hitzler , Horst Pennewiss , August Froelich , Gerhard Markert , Winfried Wunderlich
- 申请人: Otto Hitzler , Horst Pennewiss , August Froelich , Gerhard Markert , Winfried Wunderlich
- 申请人地址: DT Darmstadt
- 专利权人: Rohm GmbH
- 当前专利权人: Rohm GmbH
- 当前专利权人地址: DT Darmstadt
- 优先权: DT2518622 19750426
- 主分类号: C08F2/00
- IPC分类号: C08F2/00 ; C08F4/04 ; C07C107/02 ; C08L67/06 ; C10L1/14
摘要:
Symmetric azo-bis-mercapto compounds of the formula ##STR1## wherein R.sub.1 and R.sub.2 are methyl or ethyl, R.sub.3 and R.sub.4 are the same or different alkylene having 1 to 4 carbon atoms, and n is 0 or 1, and a method for forming block copolymers of vinyl monomers in a two-step process employing such compounds as polymerization initiators.
公开/授权文献
- US4635538A Hamburger press 公开/授权日:1987-01-13
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