The University of Texas System

Qatar Foundation

Hassan S Bazzi

David E Bergbreiter

Chayanant Hongfa

Tobin Jay Marks

Massimiliano Delferro

Yip-Wah Chung

Afif M Seyam

Michael Desanker

Danni Jin

Howard J M Hanley

Eyad A Masad

Q Jane Wang

Srinath R Iyengar

Ana K Rodriguez

Blake Johnson

One embodiment of the invention provides polyisobutylene (PIB) oligomers that are end-functionalized with ruthenium (Ru) catalysts. Such nonpolar catalysts can be dissolved in nonpolar solvents such as heptane, or any other nonpolar solvent that is otherwise not latently biphasic (i.e., if two or more solvent components are present, they remain miscible with each other throughout the entire reaction process, from the addition of substrate through to the removal of product). Substrate that is dissolved in the nonpolar solvent with the catalyst is converted into product. The lower solubility of the product in the nonpolar solvent renders it easily removable, either by extraction with a more polar solvent or by applying physical means in cases where the product precipitates from the nonpolar solvent. In this manner the catalysts are recycled; since the catalysts remain in the nonpolar solvent, a new reaction can be initiated simply by dissolving fresh substrate into the nonpolar solvent.

Nonpolar phase-soluble metathesis catalysts

Lubricant additives useful as friction reducing additives are disclosed herein that have a structure according to general formula I, where M is metal such as Ag, Au, Zn or Cu, and R, R, and R, are each a hydrogen, or an alkyl, a substituted alkyl, or an aryl group.

Lubricant additives

This invention is in the field of road construction as it relates to improving the quality and lifetime of asphalt roads and pavement surfaces. The invention relates to methods and compositions utilizing co-polymers in combination with soil to form improved subgrade soil binder compositions for supporting asphalt roads and pavement surfaces.

Co-polymer soil subgrade binders

One embodiment of the invention provides polyisobutylene (PIB) oligormers that are end-functionalized with ruthenium (Ru) catalysts. Such nonpolar catalysts can be dissolved in nonpolar solvents such as heptane, or any other nonpolar solvent that is otherwise not latently biphasic (i.e., if two or more solvent components are present, they remain miscible with each other throughout the entire reaction process, from the addition of substrate through to the removal of product). Substrate that is dissolved in the nonpolar solvent with the catalyst is converted into product. The lower solubility of the product in the nonpolar solvent renders it easily removable, either by extraction with a more polar solvent or by applying physical means in cases where the product precipitates from the nonpolar solvent. In this manner the catalysts are recycled; since the catalysts remain in the nonpolar solvent, a new reaction can be initiated simply by dissolving fresh substrate into the nonpolar solvent.

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Doha, Qatar

Hassan S Bazzi