发明名称 |
Method for preparing color-free, stabilized polymers of conjugated dienes or vinyl aromatic hydrocarbons or copolymers of conjugated dienes and vinyl aromatic hydrocarbons |
摘要 |
A method for preparing essentially color-free, stabilized polymers of conjugated dienes or vinyl aromatic hydrocarbons or copolymers of conjugated dienes and vinyl aromatic hydrocarbons involves a first stage in which a living polymer of a conjugated diene or vinyl aromatic hydrocarbon or copolymer of a conjugated diene and a vinyl aromatic hydrocarbon is prepared by anionically polymerizing the conjugated diene or vinyl aromatic hydrocarbon, or copolymerizing the conjugated diene and the vinyl aromatic hydrocarbon using a lithium-based catalyst and an inert hydrocarbon diluent. Then, the living polymer or copolymer is terminated by the addition of a suitable terminating agent. Following the termination procedure, boric acid is added to the polymer of copolymer in a sufficient amount to prevent or substantially reduce color formation. Then, stabilizing agents are added to the polymer or copolymer and the polymer or copolymer is recovered from the diluent.
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申请公布号 |
US4415695(A) |
申请公布日期 |
1983.11.15 |
申请号 |
US19820362175 |
申请日期 |
1982.03.25 |
申请人 |
THE FIRESTONE TIRE & RUBBER COMPANY |
发明人 |
SARKAR, SUNIL B. |
分类号 |
C08F4/00;C08C2/00;C08F4/42;C08F4/48;C08F6/02;C08F6/06;C08F8/42;C08F12/00;C08F36/00;C08F236/10;C08F297/04;(IPC1-7):C08K3/38 |
主分类号 |
C08F4/00 |
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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