| 发明名称 |
BLOCK COPOLYMERS AS VISCOSITY INDEX IMPROVERS |
| 摘要 |
Certain hydrogenated or saturated block copolymers having at least three blocks are highly effective viscosity index improving additives for mineral oils and are especially effective at elevated temperatures. |
| 申请公布号 |
ZA7008338(B) |
申请公布日期 |
1971.09.29 |
| 申请号 |
ZA19700008338 |
申请日期 |
1970.12.10 |
| 申请人 |
SHELL INT RES MAATSCHAPPIJ NV |
发明人 |
ANDERSON W |
| 分类号 |
C10M143/12;C08F;C10M;C10M169/00;C10N20/04;C10N30/02;C10N40/25;C10N60/02 |
主分类号 |
C10M143/12 |
| 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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