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