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:
Jul. 16, 2013
Filed:
May. 17, 2011
Andy H. Tsou, Allentown, PA (US);
Nikos Hadjichristidis, Athens, GR;
Pamela J. Wright, Easton, PA (US);
Johannes M. Soulages, Morristown, NJ (US);
Andy H. Tsou, Allentown, PA (US);
Nikos Hadjichristidis, Athens, GR;
Pamela J. Wright, Easton, PA (US);
Johannes M. Soulages, Morristown, NJ (US);
ExxonMobil Research and Engineering Company, Annandale, NJ (US);
Abstract
Provided is a process for making a saturated star hydrocarbon polymer. The process has the following steps: (A) hydrosilylating tetraethylene silicon with methyldichlorosilane in the presence of a hydrosilylating catalyst to form a chlorosilane dendrimer; (B) reacting the chlorosilane dendrimer with vinylmagnesium bromide in the presence of a lithium and/or organolithium initiator stepwise to build a higher generation chlorosilane dendrimer; (C) anionically polymerizing polybutadiene in the presence of a lithium and/or organolithium initiator to form living poly(butadienyl)lithium; (D) attaching the living poly(butadienyl)lithium to the higher generation dendrimer to form a star polybutadiene; and (E) hydrogenating the star polybutadiene to form the saturated star hydrocarbon polymer. There is also provided a saturated star hydrocarbon polymer made according to the above process and a polymer composition of a matrix ethylene polymer and the saturated star hydrocarbon polymer.