Novel vinyl ether polymers and copolymers and processes for producing the same
AssigneeExxonMobil Technology and Engineering Company
InventorsOzcan Altintas, Ranjan Tripathy, Phillip K. Logan, II, Pamela J. Wright, Adam B. Burns, Syamal Tallury
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Abstract
Processes of making copolymers of vinyl ether monomer and cyclic viny ether monomer are provided herein. The copolymers are produced by cationic polymerization with an initiator catalyst under ambient conditions. The vinyl ether dihydrofuran copolymers have a heat distortion temperature of at least 70° C. and a glass transition temperature of at least 65° C. providing excellent mechanical properties.
Claims19
A process of making a copolymer comprising the step of cationic polymerization of a feed of vinyl ether monomer and 2,3-dihydrofuran monomer in the presence of an initiator catalyst and a solvent under ambient conditions to produce a copolymer having a heat distortion temperature of at least 70° C. and a glass transition temperature of at least 65° C.
A process comprising cationic polymerizing vinyl ether and 2,3 dihydrofuran in the presence of a pentacarbomethoxy cyclopentadiene (PCCP) initiator catalyst under ambient conditions to produce a dihydrofuran-vinyl ether (DHF-VE) copolymer, the improvement comprising the DHF-VE copolymer having a heat distortion temperature of at least 70° C. and a glass transition temperature of 65° C.
A process for making a polymer comprising the steps of
- combining an EXAAL alcohol, potassium hydroxide and water to produce a mixture;
- adding calcium carbide to the mixture;
- heating the mixture to 120° C. and stirring for at least 15 hours to produce an EXXAL vinyl ether (ExVE) monomer;
- and
- polymerizing the EXXAL vinyl ether monomer via cationic polymerization in a batch process under ambient conditions in the absence of a metal ion to produce the polymer.
A compound of the formula:
- wherein m=1 to 14.
Dependencies are inferred from the claim text.