发明名称 |
Star block copolymer from lactam and polyol and process for the production thereof |
摘要 |
A novel star block copolymer represented by the general formula as shown below and a process for the production thereof are described. The copolymer has superior physical properties, particularly impact strength and, furthermore, is reduced in coloration. Thus the copolymer can find numerous uses; for example, it can be used in preparation of fibers, foams, automotive parts, and electrical components. The copolymer is produced by copolymerizing a star-shaped polyether prepolymer and a lactam, said prepolymer being prepared by reacting a star-shaped polyoxyalkylene having at least 3 terminal hydroxy groups and an N-chlorocarbonyl lactam, in the presence of an anionic polymerization catalyst. <IMAGE> In this formula, all the symbols are as defined hereinbefore.
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申请公布号 |
US4650608(A) |
申请公布日期 |
1987.03.17 |
申请号 |
US19850763089 |
申请日期 |
1985.08.06 |
申请人 |
SUMITOMO CHEMICAL COMPANY, LIMITED |
发明人 |
TAKEO, SAEGUSA;HORIKAWA, JIRO;NIWANO, MASAHIRO;KANAZAWA, TAKENOBU |
分类号 |
C08G65/26;C08G65/333;C08G69/18;C08G69/40;(IPC1-7):C08G67/00 |
主分类号 |
C08G65/26 |
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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