Invention Grant
- Patent Title: Oil-soluble interpolymers of n-vinylthiopyrrolidones
- Patent Title (中): N-乙烯基吡咯烷酮的油溶性嵌段共聚物
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Application No.: US3666730DApplication Date: 1970-02-10
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Publication No.: US3666730APublication Date: 1972-05-30
- Inventor: COLEMAN LESTER E
- Applicant: LUBRIZOL CORP
- Assignee: Lubrizol Corp
- Current Assignee: Lubrizol Corp
- Priority: US1488770 1970-02-10; US66895867 1967-09-19; US74251768 1968-07-05
- Main IPC: C08F28/00
- IPC: C08F28/00 ; C10M151/02 ; F02B75/02 ; C08F19/00 ; C08F41/00
Abstract:
N-Vinylthiopyrrolidone, and its lower alkyl-substituted homologs, are interpolymerized with polymerizable alkyl (Cs or greater) carboxylates and (optionally) other oxygen-containing monomers to produce oil-soluble polymers. These polymers are useful in lubricating oils as viscosity index improvers, dispersants and oxidation inhibitors.
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