发明名称 |
Process for preparing viscosity index improvers for lubricating oils by cracking synthetic rubbers in the liquid phase |
摘要 |
A process for preparing viscosity index improvers for lubricating oils consisting of thermally cracking a solution of an olefin copolymer in mineral oil at a temperature of between 250 DEG C. and 350 DEG C. in an inert atmosphere said solution containing free radical scavengers. |
申请公布号 |
US4327237(A) |
申请公布日期 |
1982.04.27 |
申请号 |
US19800156428 |
申请日期 |
1980.06.04 |
申请人 |
AGIP PETROLI, S.P.A. |
发明人 |
IMPARATO, LUIGI;GERBAZ, GIAMPAOLO;BETTA, ENRICO |
分类号 |
C08F8/50;(IPC1-7):07C4/04 |
主分类号 |
C08F8/50 |
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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