Functionalized low molecular weight sterically encumbered oligomers
AssigneeExxonMobil Chemical Patents Inc.
InventorsEric D. Metzger, Mika L. Shiramizu, Brian J. Rohde, Alan A. Galuska
Life of this patent
Estimating the term…
Abstract
Low molecular weight, high Tg resins, with applications including tire additives and adhesives. An oligomer is obtained by ring opening metathesis polymerization (ROMP) of a sterically encumbered cyclic monomer with an olefinic chain transfer agent. The sterically encumbered cyclic monomer and the olefinic chain transfer agent are present in the polymerization at a molar ratio of from 2:1 to about 40:1. Also, methods for making the oligomer by ROMP.
Claims18
A composition of matter comprising a functionalized oligomer obtained by ring opening metathesis polymerization (ROMP) of tetracyclododecene monomer and a sterically encumbered cyclic monomer with an olefinic chain transfer agent at a molar ratio of the tetracyclododecene monomer and the sterically encumbered cyclic monomer to olefinic chain transfer agent from 3:1 to about 40:1, wherein the olefinic chain transfer agent comprises allyl glycidyl ether, allyl Si(OEt)3, allyl-CH2—CH(O)CH2, allyl-CH2—N—(SiMe3)2, or a combination thereof, and wherein the sterically encumbered cyclic monomer comprises 5-trifluoromethyl-5,6,6-trifluoro-2-norbornene.
Dependencies are inferred from the claim text.