发明名称 |
PROCESS FOR PREPARING STYRENE-BUTADIENE RUBBER |
摘要 |
This invention discloses a process for preparing a latex of styrene-butadiene rubber which comprises (1) charging water, a soap system, a free radical generator, 1,3-butadiene monomer, and styrene monomer into a first polymerization zone; (2) allowing the 1,3-butadiene monomer and the styrene monomer to copolymerize in the first polymerization zone to a monomer conversion which is within the range of about 15% to about 40% to produce a low conversion polymerization medium; (3) charging the low conversion polymerization medium into a second polymerization zone; (4) charging an additional quantity of 1,3butadiene monomer and an additional quantity of styrene monomer into the second polymerization zone; (5) allowing the copolymerization to continue until a monomer conversion of at least about 50% is attained to produce the latex of styrene-butadiene rubber. This technique can also be utilized to synthesize polybutadiene latex or nitrile rubber latex by emulsion polymerization with low levels of soap.
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申请公布号 |
CA2158106(A1) |
申请公布日期 |
1996.10.11 |
申请号 |
CA19952158106 |
申请日期 |
1995.09.12 |
申请人 |
GOODYEAR TIRE & RUBBER COMPANY (THE) |
发明人 |
GUJARATHI, RAMESH NATWARLAL;ROGERSON, GREGORY JOHN |
分类号 |
C08F2/00;C08F2/16;C08F2/22;C08F2/26;C08F36/04;C08F236/10;(IPC1-7):C08L9/08 |
主分类号 |
C08F2/00 |
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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