High viscosity polyalphaolefins based on 1-hexene, 1-dodecene and 1-tetradecene
AssigneeExxonMobil Chemical Patents Inc.
InventorsAnatoly Ilich Kramer, Phil Surana, Pramod Jayant Nandapurkar, Norman Yang
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Abstract
This invention relates to the use of olefin mixtures containing 1-hexene/1-decene/1-dodecene and, additionally, 1-octene or 1-decene to produce high viscosity polyalphaolefins (PAOs) having a viscosity of from about 40 cSt to about 100 cSt at 100° C. (ASTM D-445) and a number average molecular weight of between about 1200 to about 4000, particularly useful as lubricant base stocks.
Claims12
A process for producing a polyalphaolefin (PAO) comprising contacting a feed consisting of 15-30 wt % 1-hexene, 45-70 wt % 1-dodecene, and 15-40 wt % 1-tetradecene, with an oligomerization catalyst in an oligomerization reaction zone under oligomerization conditions for a time sufficient to produce a PAO having a kinematic viscosity of from about 40 cSt to about 100 cSt at 100° C. (ASTM D-445), a viscosity index of at least 145 (ASTM-2270), a pour point of less than or equal to about −24° C. (ASTM D-97), and a number average molecular weight of from about 1000 to about 4000.
A process for producing a polyalphaolefin (PAO) comprising contacting a feed consisting of 20-25 wt % 1-hexene, 40-55 wt % 1-dodecene, 15-25 wt % 1-tetradecene, and 1-octene, with an oligomerization catalyst in an oligomerization reaction zone under oligomerization conditions for a time sufficient to produce a PAO having a kinematic viscosity of from about 40 cSt to about 100 cSt at 100° C. (ASTM D-445), a viscosity index of at least 145 (ASTM-2270), a pour point of less than or equal to about −24° C. (ASTM D-97),and a number average molecular weight of from about 1000 to about 4000.
A process for producing a polyalphaolefin (PAO) comprising contacting a feed consisting of 20-25 wt % 1-hexene, 45-55 wt % 1-dodecene, 15-20 wt % 1-tetradecene, and 1-decene, with an oligomerization catalyst in an oligomerization reaction zone under oligomerization conditions for a time sufficient to produce a PAO having a kinematic viscosity of from about 40 cSt to about 100 cSt at 100° C. (ASTM D-445), a viscosity index of at least 145 (ASTM-2270), a pour point of less than or equal to about −24° C. (ASTM D-97), and a number average molecular weight of from about 1000 to about 4000.
Dependencies are inferred from the claim text.