Patent ID: 6762253
Filing Date: 2004-07-13
Classification: B01J,C08F,C10L

Abstract:
A process for improving cold flow of a mineral oil or a mineral oil distillate, the process comprising mixing with the mineral oil or mineral oil distillate from 0.001 to 2% by weight of a solution or a dispersion of a copolymer wherein the copolymer is made from a process for the preparation of terpolymers of ethylene and at least two further monoolefinically unsaturated comonomers selected from a group consisting of vinyl esters, acrylates, methacrylates, alkyl vinyl ethers and alkenes by polymerization in a single tubular reactor fitted with at least one side branch, wherein fresh monomer components, initiator and optional regulator are introduced into the tubular reactor via a reactor inlet (the primary stream) or via a side branch or branches (second stream or secondary streams), and wherein each of the streams contain ethylene and at most one different of the two further olefinically unsaturated comonomers.