High viscosity, functionalized metallocene polyalphaolefin base stocks and processes for preparing same

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United States of America Patent

PATENT NO 9458403
APP PUB NO 20140087986A1
SERIAL NO

14017826

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Abstract

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A process for producing a high viscosity functionalized metallocene polyalphaolefin (mPAO) fluid. The process includes providing a mPAO having a terminal double bond, said mPAO produced by the metallocene-catalyzed oligomerization or polymerization of an alpha-olefin feed; providing at least one of a substituted or unsubstituted alkyl thiol, aryl thiol, diphenylamine or naphthalene; and reacting, optionally in the presence of a catalyst or initiator, the mPAO having a terminal double bond with at least one of the substituted or unsubstituted alkyl thiol, aryl thiol, diphenylamine or naphthalene, under reaction conditions sufficient to produce the functionalized high viscosity mPAO fluid. The functionalized mPAO fluid has, as synthesized, a viscosity (Kv100) from 135 to 900 cSt at 100° C.; a viscosity index (VI) greater than 150; a pour point (PP) less than −25° C.; a molecular weight distribution (Mw/Mn) less than 2.0; a residual unsaturation (Bromine Number) less than 2.0; and a glass transition temperature Tg less than −30° C.

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Patent Owner(s)

  • EXXONMOBIL RESEARCH AND ENGINEERING COMPANY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bodige, Satish Wayne, US 55 177
Luo, Shuji Bridgewater, US 31 92
Patil, Abhimanyu Onkar Westfield, US 48 398

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