Patent ID: 8613298
Filing Date: 2013-12-24
Classification: B60C,C08C,C08K,C08L,Y10T

Abstract:
1. A method of preparing a functionalized elastomer, comprising the steps of A) obtaining a diene-based elastomer selected from the group consisting of natural rubber, synthetic polyisoprene, polybutadiene, solution polymerized styrene-butadiene rubber (SSBR), and emulsion polymerized styrene-butadiene rubber (ESBR); B) mixing a combination consisting of the diene-based elastomer, a halogenating agent, and optionally an acid acceptor to form an intermediate elastomer comprising a halogen, wherein the halogenating agent is selected from the group consisting of iodine, bromine, 1,3-dibromo-5,5-dimethyl hydantoin, and N-bromosuccinimide; C) heating the intermediate elastomer comprising a halogen and removing the halogen to form an elastomer comprising conjugated diene bonds; and D) mixing a combination consisting of the elastomer comprising conjugated diene bonds and a dienophile comprising a filler-active functional group to form a functionalized elastomer.