发明授权
US5349019A New copolymers, mixtures thereof with poly(meth)acrylate esters and the use thereof for improving the cold fluidity of crude oils 失效
新的共聚物,其与聚(甲基)丙烯酸酯的混合物及其用于改善原油冷流动性的用途

New copolymers, mixtures thereof with poly(meth)acrylate esters and the
use thereof for improving the cold fluidity of crude oils
摘要:
New copolymers, mixtures thereof with poly(meth)acrylate esters and the use thereof for improving the cold fluidity of crude oils.Copolymers comprising as comonomers therein from 50 to 99.9% by weight of a C.sub.14 -C.sub.22 -alkyl(meth)acrylate and 50 to 0.1% by weight of a comonomer derived from a compound comprising a single polymerizable C.dbd.C group and these copolymers or their mixture with C.sub.14 -C.sub.22 -alkyl poly(meth)acrylates having enhanced pour point depressant properties.
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