Patent ID: 9139784
Filing Date: 2015-09-22
Classification: C08L,C10G,F28F

Abstract:
1. In a process to increase the temperature of a solution comprising from 5 to 40 wt % of a polymer comprising from 80 to 100 wt % of ethylene and from 20 to 0 wt % of one or more C 2-8 alpha olefins and from 95 to 60 wt % of solvent comprising one or more C 4-8 saturated hydrocarbons at an initial temperature from 150° C. to 225° C. and a pressure from 5 MPa to 18 MPa the improvement of reducing heat exchanger fouling by adding to the solution from 0.01 to 100 ppm by weight of a polyoxyalkylene compound of the formula wherein M, N and P each represent the average number of repeating units and M is from 0 to 12, N is from 2 to 50 and P is from 0 to 12 provided that when M and P are 0 the polyoxyalkylene compound has a weight average molecular weight from 300 to 1500 and when one of N or M are present the polyoxyalkylene compound has a weight average molecular weight from 2500 to 3500, and passing the solution through a heat exchanger to increase its temperature by at least 20° C.