发明授权
US3965019A Lubricating compositions containing hydrogenated block copolymers as
viscosity index improvers
失效
含有氢化嵌段共聚物作为粘度指数改进剂的润滑组合物
- 专利标题： Lubricating compositions containing hydrogenated block copolymers as viscosity index improvers
- 专利标题（中）： 含有氢化嵌段共聚物作为粘度指数改进剂的润滑组合物
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申请号： US534256申请日： 1974-12-19
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公开(公告)号： US3965019A公开(公告)日： 1976-06-22
- 发明人: David J. St. Clair , Ronald K. Crossland
- 申请人： David J. St. Clair , Ronald K. Crossland
- 申请人地址： TX Houston
- 专利权人： Shell Oil Company
- 当前专利权人： Shell Oil Company
- 当前专利权人地址： TX Houston
- 主分类号： C10M143/12
- IPC分类号： C10M143/12 ; C10M169/00 ; C10M1/16
摘要：
Lubricating compositions having improved operating life comprise lubricants containing hydrogenated polymers of conjugated dienes wherein at least 98% of the olefinic double bonds present in the non-hydrogenated precursors are reduced and at least 20% of the polymeric molecules contain no olefinic double bonds in the polymer backbone.
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