The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 07, 2015
Filed:
Mar. 01, 2012
Evemarie Hamann, Halle, DE;
Silvia Valenti, Halle, DE;
Karin Schmiedel, Halle, DE;
Styron Europe GmbH, Horgen, CH;
Abstract
A process for polymerization of a polymer containing monomeric units derived from a styrene monomer and a 1,3-butadiene monomer includes polymerizing the monomeric units in the presence of an initiator, a first polar agent, and a second polar agent. The first polar agent includes a structure (I): RRN-Q-NRR; and the second polar agent comprises a structure (II): R, R', R, and Rare each independently selected from the group consisting of an alkyl group and hydrogen; Q contains an alkylene group; Rand Rare each independently an alkyl group; and R, R, R, R, Rand Rare each independently selected from the group consisting of an alkyl group and hydrogen. Polymers prepared by the above process are described, as are compositions containing such a polymer, and articles containing at least one component formed from such a composition.