申请人:EXXON CHEMICAL PATENTS INC.
公开号:EP0306290A1
公开(公告)日:1989-03-08
Additives suitable for improving the flow and/or depressing the cloud point of crude oils, lubricating oils and especially fuel oils are polymers containing defined alkyl groups of at least 8 carbon atoms chain length. Such polymers are either (a) of a mixture of monomers having only two alkyl groups one being at least 3 carbon atoms longer than the other or (b) of a mixture of monomers having only three alkyl groups each differing by at least 3 carbon atoms and the middle alkyl group being half the combined length of the other two. Alternatively, the polymer may be derived from a monomer having the two defined alkyl groups (a) or the three defined alkyl groups (b).
适用于改善原油、润滑油,特别是燃料油的流动性和/或降低浊点的添加剂是含有至少 8 个碳原子链长的确定烷基的聚合物。这种聚合物可以是 (a) 单体的混合物,其中只有两个烷基,其中一个比另一个至少长 3 个碳原子;或者 (b) 单体的混合物,其中只有三个烷基,每个烷基至少相差 3 个碳原子,中间的烷基是另外两个烷基总长度的一半。或者,聚合物可以由具有两个定义的烷基(a)或三个定义的烷基(b)的单体衍生而来。