Patent ID: 6103840
Filing Date: 2000-08-15
Classification: C08F

Abstract:
A process for making an allylic/ethylenic copolymer, said process comprising:a) charging a reactor with an allyl monomer and optionally, portions of the total amount to be used of an ethylenic monomer and a free-radical initiator;b) heating the reaction mixture at a temperature within the range of about 60.degree. C. to about 145.degree. C.;c) gradually adding to the reaction mixture the remaining ethylenic monomer and free-radical initiator; andd) during step (c), increasing the reaction temperature to one within the range of about 150.degree. C. to about 250.degree. C. to produce an allylic/ethylenic copolymer having a number average molecular weight within the range of about 500 to about 10,000;wherein the mole ratio of ethylenic monomer to allyl monomer used in the process is within the range of about 0.1 to about 10; and the yield of the copolymer is enhanced as a result of the increase in temperature in steps (c) and (d).