申请人:NIPPON OIL CO. LTD.
公开号:EP0723985A1
公开(公告)日:1996-07-31
A fuel additive according to the invention comprises a urethane compound of the formula
wherein R1 is hydrogen or a C1 - C30 hydrocarbon group, R2, R3, R4 and R5 each are hydrogen or a C1 - C10 hydrocarbon group and at least one of them is a group of formula (II) below, R6 is a C2 - C6 alkylene group, a is an integer of 1 - 100, b is an integer of 0 - 100, the sum of a and b being equal to 1 - 200, c is an integer of 1 - 3, d is an integer of 0 - 2, the sum of c and d being equal to 3, and X is selected from the group consisting of hydrogen, a C1 - C30 hydrocarbon group, a group of formula (III) below and a group of formula (IV) below;
said formula (II) being represented by
wherein R7 and R8 each are hydrogen, a C1 - C10 hydrocarbon group or a C2 - C10 alcoxyalkyl group, R9 is a C2 - C6 alkylene group or a C4 - C10 alkylene group having an alkoxyalkyl substituent, R10 is hydrogen or a C1 - C30 hydrocarbon group, and e is an integer of 0 - 50;
said formula (III) being represented by
wherein R11 is a C2 - C6 alkylene group, R12 is hydrogen or a C1 - C4 alkyl group, R13 is hydrogen or a C1 - C30 hydrocarbon group, and f is an integer of 1 - 5;
and said formula (IV) being represented by
wherein R14 is a C2 - C6 alkylene group, R15, R16, R17 and R18 each are hydrogen or a C1 - C10 hydrocarbon group, Y is a methylene group, a C1 - C10 hydrocarbon-substituted methylene group, an imino group, a C1 - C10 hydrocarbon-substituted imino group or oxygen, g is 1 if d is equal to 1 and 0 or 1 if d is equal to 2, and if g is equal to 0, N here corresponds to N in formula (I).
The inventive additive when blended with a gasoline serves to suppress sludge or deposits in fuel intake systems or combustion chambers for example of an automobile engine.
根据本发明,一种燃料添加剂包括如下式的氨基甲酸乙酯化合物
其中 R1 为氢或 C1 - C30 烃基,R2、R3、R4 和 R5 各为氢或 C1 - C10 烃基,且其中至少一个为下式(II)的基团,R6 为 C2 - C6 亚烷基,a 为 1 - 100 的整数,b 为 0 - 100 的整数,a 和 b 之和等于 1 - 200,c 为 1 - 3 的整数,d 为 0 - 100 的整数、c 是 1 - 3 的整数,d 是 0 - 2 的整数,c 和 d 之和等于 3,X 选自氢、C1 - C30 烃基、下式 (III) 基团和下式 (IV) 基团组成的组;
所述式 (II) 由以下各项表示
其中 R7 和 R8 分别为氢、C1 - C10 烃基或 C2 - C10 烷氧基烷基,R9 为 C2 - C6 亚烷基或具有烷氧基烷基取代基的 C4 - C10 亚烷基,R10 为氢或 C1 - C30 烃基,e 为 0 - 50 的整数;
所述式 (III) 由以下各项表示
其中 R11 是 C2 - C6 亚烷基,R12 是氢或 C1 - C4 烷基,R13 是氢或 C1 - C30 烃基,f 是 1 - 5 的整数;
所述式 (IV) 由以下各项表示
其中 R14 是 C2 - C6 亚烷基,R15、R16、R17 和 R18 分别是氢或 C1 - C10 烃基,Y 是亚甲基、C1 - C10 烃取代的亚甲基、亚氨基、C1 - C10 烃取代的亚氨基或氧,如果 d 等于 1,则 g 为 1,如果 d 等于 2,则 g 为 0 或 1,如果 g 等于 0,则此处的 N 相当于式(I)中的 N。
本发明添加剂与汽油混合后,可抑制例如汽车发动机进气系统或燃烧室中的油泥或沉积物。