发明授权
- 专利标题: Process for graft copolymerization
- 专利标题(中): 接枝共聚方法
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申请号: US216257申请日: 1980-12-15
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公开(公告)号: US4338418A公开(公告)日: 1982-07-06
- 发明人: Heinz Jost , Hellmuth Knoell , Gerhard Markert , Horst Pennewiss
- 申请人: Heinz Jost , Hellmuth Knoell , Gerhard Markert , Horst Pennewiss
- 申请人地址: DEX Darmstadt
- 专利权人: Rohm GmbH
- 当前专利权人: Rohm GmbH
- 当前专利权人地址: DEX Darmstadt
- 优先权: DEX2805826 19780211
- 主分类号: C08F255/04
- IPC分类号: C08F255/04 ; C08F265/04 ; C08F291/00 ; C10M149/10 ; C10N30/02 ; C10N30/04 ; C10N40/25 ; C08F255/02
摘要:
What is disclosed are the method of making a lubricating-oil additive which improves the viscosity index and has a dispersing and detergent action, which method comprises graft copolymerizing, onto an oil-soluble base polymer, from 0.5 to 10 parts of a polymerizable lactam together with 0.1 to 3 parts of a polymerizable N-heterocyclic compound, said parts being by weight of said base polymer, and the lubricating-oil additives so produced.
公开/授权文献
- US5394917A Wood splitting maul 公开/授权日:1995-03-07