Patent ID: 8987382
Filing Date: 2015-03-24
Classification: C08F,C08J,C08K,C08L,Y10T

Abstract:
1. A method for increasing the melt strength of a polyethylene resin comprising the steps of: a) selecting a first polyethylene resin selected from the group consisting of LLDPE, HDPE, LDPE and blends thereof, wherein said first polyethylene resin has a density, as determined according to ASTM D792, in the range of from 0.900 g/cm b) reacting said first polyethylene resin with a free radical generator with a decomposition energy in the range of from −50 kJoules/mole to −250 kJoules/mole, with a peak decomposition temperature of no less than 150 degree C. and not more than 280 degree C., wherein the free radical generator is in a carrier resin selected from the group consisting of LDPE, HDPE and blends thereof, wherein the carrier resin comprises less than 1,000 ppm antioxidant and wherein the free radical generator is in an amount in the range of from 30 to 200 ppm and added under conditions sufficient to increase the melt strength of the polyethylene resin by at least 20% over and above a control not reacted with said free radical generators.