发明授权
US06458174B1 Copolymers, and their use as additives for improving the cold-flow properties of middle distillates
有权
共聚物及其作为添加剂的用途，用于改善中间馏分的冷流特性
- 专利标题： Copolymers, and their use as additives for improving the cold-flow properties of middle distillates
- 专利标题（中）： 共聚物及其作为添加剂的用途，用于改善中间馏分的冷流特性
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申请号： US09487066申请日： 2000-01-19
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公开(公告)号： US06458174B1公开(公告)日： 2002-10-01
- 发明人: Matthias Krull , Waltraud Nagel
- 申请人： Matthias Krull , Waltraud Nagel
- 优先权： DE19901803 19990119
- 主分类号： C10L118
- IPC分类号： C10L118
摘要：
Copolymers containing A) from 45 to 54 mol % of divalent structural units of the formula 1 in which a and b=0 or 1 and a+b=1, B) from 35 to 53 mol % of divalent structural units of the formula 2 —H2C—CHR2— (2) and C) from 1 to 25 mol % of divalent structural units derived from polyolefins, where the polyolefins can be derived from monoolefins having 3 to 5 carbon atoms, wherein a) R1 is an alkyl or alkenyl radical having 10 to 40 carbon atoms or an alkoxyalkyl radical having 1 to 100 alkoxy units and 1 to 30 carbon atoms in the alkyl radical, and b) R2 is an alkyl radical having 10 to 50 carbon atoms, c) the alkylvinylidene content of the polyolefins on which the structural units C) are based is at least 50 mol %, and d) the number of carbon atoms in the polyolefin molecules on which the structural units C) are based is from 35 to 350.