A quaternized copolymer obtainable by: (A) copolymerization of straight-chain, branched or cyclic, ethylenically unsaturated C
2
to C
100
hydrocarbons, which may bear oxygen- or nitrogen-functional substituents which cannot be reacted with amines to give amides or imides or with alcohols to give esters, with ethylenically unsaturated C
3
- to C
12
-mono- or dicarboxylic acids or acid derivatives, which can be reacted with amines to give amides or imides or with alcohols to give esters, to give a copolymer with a number-average molecular weight of 500 to 20 000; (B) partial or full amidation or imidation or esterification of the carboxylic acid functions by reacting them with oligoamines having 2 to 6 nitrogen atoms or alcoholamines, each of which comprises primary or secondary nitrogen atom or a hydroxyl group and a quaternizable tertiary nitrogen atom; (C) partial or full quaternization of the tertiary nitrogen atom with a quaternizing agent. The quaternized copolymer thus prepared is suitable as a fuel additive in direct-injection diesel engines.
US4438045A
申请人:——
公开号:US4438045A
公开(公告)日:1984-03-20
US8911516B2
申请人:——
公开号:US8911516B2
公开(公告)日:2014-12-16
Amphoteric surfactants
申请人:Texaco Inc.
公开号:US04438045A1
公开(公告)日:1984-03-20
A new composition of matter is revealed. The composition of matter is the condensation product of succinic anhydride, 3-dimethylamino propylamine or 3-dimethyl aminoethanol and a specified glycidyl ether. The composition of matter is useful as an amphoteric surfactant.