Oil-soluble polymers of N-3-aminoalkyl acrylamides, and lubricants
申请人:The Lubrizol Corporation
公开号:US03979441A1
公开(公告)日:1976-09-07
Oil-soluble polymers of N-3-aminoalkyl acrylamides, especially N-(1,1-dimethyl-3-dimethylaminopropyl)acrylamide, are obtained by copolymerization with a monomer (especially an alkyl acrylate or methacrylate) containing an alkyl group with at least about 8 carbon atoms. These polymers are useful as dispersants and viscosity modifiers for lubricants.
N-3-Aminoalkyl propionamides with an ether substituent on the beta carbon atom are prepared by the reaction of analogous N-3-oxohydrocarbon-substituted amides with an amine in the presence of a reducing agent, preferably hydrogen and a hydrogenation catalyst. The resulting compounds can be converted to acrylamides by pyrolysis in the presence of a strong base. The latter compounds may also be prepared by the reaction of a .beta.,.gamma.-unsaturated amine with an acrylonitrile in the presence of sulfuric acid. They are useful for improving dyeability of fiber-forming polymers and may be polymerized to form compositions which are useful in paper manufacture and (in their quaternized form) are excellent flocculants.