Polymeric compositions obtainable by free-radical polymerization of at least two different alkyl (meth)acrylates in the presence of at least one ethylene-vinyl ester copolymer, the alkyl (meth)acrylates used being a mixture comprising alkyl (meth)acrylates having linear C
12
- to C
60
-alkyl radicals and different alkyl (meth)acrylates having linear C
1
- to C
11
-alkyl radicals and/or branched C
4
- to C
60
-alkyl radicals and/or cyclic C
5
- to C
20
-alkyl radicals. The use of such polymeric compositions as pour point depressants for crude oils, mineral oils or mineral oil products.
通过自由基聚合至少两种不同的烷基(甲基)
丙烯酸酯与至少一种
乙烯基酯共聚物在场的情况下,可以获得聚合物组合物。所使用的烷基(甲基)
丙烯酸酯是一种混合物,包括具有线性C12至C60烷基基团的烷基(甲基)
丙烯酸酯和不同的具有线性C1至C11烷基基团和/或支链C4至C60烷基基团和/或环状C5至C20烷基基团的烷基(甲基)
丙烯酸酯。使用这种聚合物组合物作为原油、矿物油或矿物油产品的倾点降低剂。