Sabic Innovative Plastics IP B.v.

Infineum International Limited

Sonia Oberoi

Parnasree Maiti

Jacob I Emert

Vaidyanath Ramakrishnan

Roopali Rai

Raymond F Watts

Theodorus L Hoeks

Hans Looij

Ning Hao

Soumyadeb Ghosh

Anne Young

Stuart Briggs

Sandeep Tyagi

Dean B Clarke

Peter J Hobin

Claire L Fitter

Vaidyanath Ramakrishan

Sandeep Tvagi

Gang Hu

Gareth B L Strange

James R Millington

Alessandra Catani

Gareth B Strange

Joe R Noles

Anne Wai-Yu Young

Gareth Strange

James Millington

Claire Fitter

Peter Hobin

Joe Jnr Noles

A lubricant additive concentrate containing (i) dispersant that is the polybutenyl succinimide reaction product of a polyamine and polybutenyl succinic anhydride (PIBSA) derived from polybutene having a number average molecular weight (M) of from about 1300 to about 2500 daltons and a terminal vinylidene content of at least about 50% and maleic anhydride via an ene maleation process; (ii) overbased magnesium colloidal detergent having a total base number (TBN) of from about 300 to about 900 mg KOH/g; and (iii) organic friction modifier selected from hydroxyalkyl alkyl amines of Cto Chydrocarbons, at least one hydroxyalkyl alkyl ether amines of Cto Chydrocarbons, at least one alkyl ester amine derived from triethanol amine having a Cto Chydrocarbyl substituent, at least one non-basic, fatty acid amide, or a mixture thereof; wherein the combined mass % of dispersant (i) and overbased magnesium colloidal detergent (ii) in said concentrate is from about 15 to about 50 mass %: the mass ratio of (i):(ii) is from about 1:1 to about 6:1; and the concentrate contains from about 2 to about 10 mass % of organic friction modifier (iii); the remainder of the concentrate being composed of base oil and additives other than dispersant (i), overbased magnesium colloidal detergent (ii) and organic friction modifier (iii).

Additive concentrates for the formulation of lubricating oil compositions

A lubricant additive concentrate having a kinematic viscosity of from about 40 to about 300 cSt at 100&#xb0; C., containing a dispersant-detergent colloid complex, including a polybutenyl succinimide dispersant that is the reaction product of a polyamine and polybutenyl succinic anhydride (PIBSA) derived from polybutene having a number average molecular weight (M) of from about 1300 to about 2500 and a terminal vinylidene content of at least about 65%, and succinic and/or maleic anhydride via an ene maleation process, the PIBSA having a succinic anhydride (SA) functionality (F) of greater than 1.7 and less than about 2.5; and a detergent colloid including overbased detergent having a total base number (TBN) of from about 370 to about 1000 mg KOH/g derived from one or more surfactants selected from (i) sulfonate; (ii) phenate; and (iii) carboxylate surfactant; in which the mass ratio of the dispersant to the overbased detergent colloid in the concentrate is from about 0.5 to about 5.0; and the dispersant and overbased colloidal together constitute at least 28 mass %, of the concentrate.

Dispersant additives and additive concentrates and lubricating oil compositions containing same

Polymers suitable for use as a viscosity index improver for lubricating oil compositions including linear polymers characterized by the formula:D'-PA-D&#x2033;;and star polymers characterized by the formula:(D&#x2032;-PA-D&#x2033;)-X;wherein D&#x2032; represents an 'outer' block derived from diene having a number average molecular weight of from about 10,000 to about 120,000 daltons; PA represents a block derived from monoalkenyl arene having a number average molecular weight of from about 10,000 to about 50,000 daltons; D&#x2033; represents an inner random derived from diene having a number average molecular weight of from about 5,000 to about 60,000 daltons; n represents the average number of arms per star polymer formed by the reaction of 2 or more moles of a polyalkenyl coupling agent per mole of arms; and X represents a nucleus of a polyalkenyl coupling agent.

Viscosity index improvers for lubricating oil compositions

Polycarbonate nanocomposites comprising a polycarbonate matrix having non-oxidized metal nanoparticles dispersed therein are disclosed. The polycarbonate nanocomposite is produced by a process comprising forming a reaction mixture comprising a dihydroxy compound, an activated carbonate, a metal precursor, and a solvent; and in-situ polymerizing the reaction mixture to form a nanocomposite comprising a polycarbonate matrix and metal nanoparticles dispersed therein. The metal precursor comprises a metal selected from a specified group. The nanocomposites have improved mechanical, optical, electrical and/or magnetic properties. Also disclosed are articles formed from such polycarbonate nanocomposites.

Polycarbonate nanocomposites

Methods of forming nanocomposites comprising a polymer and metal nanoparticles are disclosed. The nanoparticles are disposed within a matrix of the polymer. In particular, the nanoparticles are formed in situ in an extruder. The methods comprise providing a reaction mixture comprising a polymer, a metal precursor, and a solvent and extruding the reaction mixture to form a polymer nanocomposite. The methods overcome nanoparticle dispersion issues arising from melt blending processes.

Methods of preparing polymer nanocomposites

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Edison, NJ, United States of America

Sonia Oberoi