| 发明名称 |
Star-shaped copolymers and process for their manufacture |
| 摘要 |
A process for manufacturing a star shaped block polymer of formula (PA-PB-PC)n-N-(PD-PE)m wherein PA, PB and PC are respectively vinylaromatic/methacrylic blocks, acrylic blocks and methacrylic blocks. PD is a polymer block selected from vinylaromatic and/or methacrylic monomer units, PE is an acrylic polymer block, n is 2 to 20 and m is 0 to 18 with the proviso that m+n is </=20. The process proceeds by anionic polymerization in the presence of a monofunctional initiator of formula (II), (R)p-Mwherein M is an alkali or alkaline earth metal, p is 1 or 2 and R is a straight or branched alkyl radical having 2 to 6 carbon atoms or a C1 to C6 substituted alkyl radical.
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| 申请公布号 |
US5756585(A) |
申请公布日期 |
1998.05.26 |
| 申请号 |
US19950383437 |
申请日期 |
1995.02.03 |
| 申请人 |
ATOCHEM |
发明人 |
TEYSSIE, PHILIPPE;FAYT, ROGER;VARSHNEY, SUNIL K.;JACOBS, CHRISTIAN |
| 分类号 |
C08F297/02;(IPC1-7):C08F297/02 |
主分类号 |
C08F297/02 |
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