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US 11,028,195 B2Granted
Hydroxyaryl functionalized polymers
AssigneeBridgestone Corporation
InventorsXiao-Dong Pan, Zengquan Qin, Yuan-Yong Yan, Dennis R. Brumbaugh, Jason T. Poulton
Life of this patent
Estimating the term…
Abstract
Vulcanizates with desirable properties can be obtained from compounds incorporating polymers that include hydroxyl group-containing aryl functionalities. The functionalities can be incorporated by using any or all of appropriate initiators, monomers and terminating compounds. Such polymers exhibit excellent interactivity with both conventional and non-conventional fillers.
Claims16
A method of making a functionalized polymer that comprises polyene mer and a terminal functional group, said method comprising
- a) providing a solution that comprises a catalyst system and one or more types of ethylenically unsaturated monomers which include at least one type of polyene;
- b) allowing said one or more types of ethylenically unsaturated monomers to polymerize, thereby providing a terminally active polymer;
- c) reacting said terminally active polymer with a functionalizing compound that comprises
- (1) a functional group that is reactive toward a terminally active polymer, and
- (2) an aryl group having at least two directly bonded OR groups where each R is a hydrolyzable t-butyldimethylsilyl protecting group,
- thereby providing said functionalized polymer.
3 more elements
Dependencies are inferred from the claim text.