N-substituted carbamates and their use as gasoline additives

Details N-substituted carbamates and their use as gasoline additives N-substituted carbamates and their use as gasoline additives

C - Chemistry, Metallurgy

07

C

C07C 271/20 (2006.01) C08F 226/02 (2006.01) C10L 1/22 (2006.01) C10L 1/2383 (2006.01)

Patent

CA 2078633

T 2373 FF ABSTRACT N-SUBSTITUTED CARBAMATES AND THEIR USE AS GASOLINE ADDITIVES The invention provides polyolefin-polyamine-N- substituted polycarbamates, useful for preventing or reducing deposits in engines, of the general formula: (I) Image wherein n is 2 to 8; R1 represents a polyolefin chain having a number average molecular weight (Mn) in the range from 500 to 9900; each R2 independently represents a C2-C8 alkylene group; R3 represents a hydrogen atom or a C1-C7 alkyl group; each R4 independently represents a hydrogen atom, a C1-C7 alkyl group, or -COOR5 with at least two of R4 being -COOR5 and wherein each R5 independently represents a hydrocarbyl or substituted hydrocarbyl group containing up to 20 carbon atoms: a process for their preparation; and gasoline compositions and gasoline additive concentrates containing them. PS25006

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