The University of Southern Mississippi

Chevron Oronite Company LLC

Exxonmobil Chemical Patents Inc.

Aechelon Technology, Inc.

Other

D'magination Licensing and Servicing Company, LLC

David L Morgan

Robson F Storey

Maryam Sepehr

Sara Yue Zhang

Jo Ann M Canich

Jingwen Zhang

Ignacio Sanz-Pastor

Javier Castellar

D Scott Morgan

Peijun Jiang

John Robert Hagadorn

Periagaram Srinivasan Ravishankar

Rainer Kolb

Casey Don Stokes

Georgeta Masson

Sarah J Mattler

Man Hon Tsang

Pritesh A Patel

Young A Chang

Luis A Barcena

Ian G Elliott

Chase A Eckert

Shuhui Kang

Scott D Morgan

Christopher E Blumenthal

Roland Ma

Pritesh Arjunbhai Patel

The present disclosure relates to lubricant compositions comprising a branched copolymer and methods for making such compositions. Lubricant compositions of the present disclosure comprise an oil and a copolymer and have a high temperature high shear (HTHS) viscosity of about 5 or less, shear stability index (30 cycles) of from about 2% to about 80%, a ratio of thickening efficiency to shear stability index (30 cycles) of from about 1:2 to about 1:30, a kinematic viscosity at 100° C. of from about 3 cSt to about 30 cSt, and a thickening efficiency of about 1 or more. In another class of embodiments, the present disclosure provides a lubricant composition comprising a first and a second copolymers wherein the first copolymer has an ethylene content higher than that of the second copolymer, and wherein at least one of the two copolymers is a long chain branched ethylene copolymer.

Ethylene-propylene branched copolymers as viscosity modifiers

Lubricating oil compositions are provided which contain bimodal copolymer compositions, and in particular bimodal ethylene-α-olefin copolymer compositions. The copolymer compositions comprise first and second ethylene-α-olefin copolymer components. The bimodal compositions are particularly useful as viscosity or rheology modifiers, e.g., in lubricating oil compositions. Lubricating oil compositions comprising the copolymer compositions advantageously exhibit enhanced shear stability index (SSI) and thickening efficiency (TE) values, while maintaining excellent low-temperature properties such as pour point, mini-rotary viscometer viscosity, and cold crank simulation performance.

Bimodal copolymer compositions useful as oil modifiers and lubricating oils comprising the same

Provided is a lubricating oil composition that includes a major amount of a lubricant base oil and a minor amount of a viscosity index improver comprising a syndiotactic propylene-based ethylene-propylene copolymer comprising: a) 2 to 20% by weight of ethylene, b) 80 to 98% by weight of propylene; c) 50 to 99% of rr triads; and d) Mw (LS) of 10 to 250 kg/mol.

Lubricating oil composition with viscosity modifier based on syndiotactic propylene-based ethylene- propylene copolymers with improved properties

Provided herein are polyimide dispersants, as well as methods for producing polyimide dispersants. The polyimides can be defined by the formula below wherein A, individually for each occurrence, represents a cyclic diimide moiety represented by the structure below where B represents a cyclic moiety substituted with a first cyclic imide group and a second cyclic imide group; Y, individually for each occurrence, represents a bivalent linking group; L, individually for each occurrence, is absent or represents a cyclic imide group; R, individually for each occurrence, represents a polymeric tail; and n is an integer from 1 to 20.

Polyimide dispersants and methods of making and using thereof

Mouth guards of varying designs. The mouth guard is generally moldable and has non-planar biting surfaces. In other embodiments, the mouth guard has base members or flanges that have means for retaining medicaments and the like. Other versions have thermochromic elements selected to allow color changes at desired temperatures.

Mouth guard

Provided herein are telechelic polymers and methods for producing the same. In some embodiments, provided herein are compounds having the formula and methods for producing the same.

Functionalization of polyolefins with phenoxy derivatives

Provided herein are copolymers of a polyaminopolymer and polyanhydride, wherein the polyaminopolymer comprises a polyaminopolyolefin; and methods of their preparation.

Copolymers of polyaminopolyolefins and polyanhydrides and methods of their preparation

Provided herein are methods for preparing a telechelic polymer of formula I wherein:

In situ formation of hydroxy chain end functional polyolefins

Provided herein are vinyl ether end-functionalized polyolefins and methods for producing the same.

Vinyl ether end-functionalized polyolefins

A user's physical location and the time the user is at that location are sampled by an network-enabled mobile computing device at certain intervals, and used to construct a representation of the comparative relevance of the different physical locations where the user lives. This representation is then used then to optimize and prioritize results returned by a local network search operation, informing the user about which search result would be optimal for the user at her intended time for use of that choice.

Local search optimization using personal footprints

Efficient determination of illumination over large 3D environments, including shadowing, is provided. Illumination, including shadows, is generated using a raster elevation map by a lighting solver. The lighting solver fetches the raster elevation map for an illumination area of interest at the paging rate and produces an illumination map that is applied to terrain and features by a 3D renderer. The lighting solver updates subsets of the illumination map as necessary to reflect changing illumination or movement of the visual area of interest.

Efficient illumination of large three dimensional environments

Provided herein are methods for preparing a telechelic polymer of formula I wherein

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Fairfield, CA, United States of America

David L Morgan