Rohm and Haas Company

Rohmax Additives Gmbh

Joseph M Bollinger

Warren Harvey Machleder

Markus Scherer

Richard H Hanauer

Sebastian Roos

Robert H Gore

Boris Eisenberg

Joan Marie Souchik

Bernard George Kinker

Jen-Lung Wang

David J Cooper, Jr

Robert Woodruff

Larry Stephen Tillery

David Arthur Pierce

The present invention relates to a process for preparing dithioesters in which a dithiocarboxylic acid and/or a dithiocarboxylic salt is reacted with a vinyl compound and/or an alkyl compound which includes a leaving group, the reaction being carried out in a biphasic system in which one of the phases comprises water and the weight ratio of the aqueous phase to the organic phase lies in the range from 95:5 to 5:95.

Process for preparing dithioesters

Polymer compositions with reduced living halogen content are used as additive to lubricating oils and are prepared by polymerizing at least one ethylenically unsaturated monomer using a) at least one initiator containing a transferable halogen and b) one or more metal catalysts containing at least one transition metal, in the presence of ligands which can form a coordination compound with the one or more metal catalysts, to obtain a polymer composition having a living halogen content, and after the polymerizing, reacting the polymer composition having a living halogen content with at least one organic nitrogen compound in the presence of a nonpolar solvent, thereby reducing the living halogen content to obtain the polymer composition having a reduced halogen content.

Process for synthesis of polymer compositions with reduced halogen content, polymer composition with reduced halogen content as well as use of this composition

The present invention relates to a process for synthesis of polymer compositions, wherein ethylenically unsaturated monomers are polymerized by means of initiators containing a transferable atom or group of atoms and of one or more catalysts comprising at least one transition metal in the presence of ligands which can form a coordination compound with the metal catalyst or catalysts, the process being characterized in that the polymerization takes place by means of continuous process operation.

Process for continuous synthesis of polymer compositions as well as use of same

Gradient copolymers, as well as a method for their preparation and their use

Method for preparation of a composition that contains polymer ester compounds with long-chain alkyl residues and use of this composition

A process for the preparation of continuously variable-composition copolymers by effecting gradual changes in monomer composition during the polymerization is disclosed. Poly(meth)acrylate copolymers made by the process of the present invention have improved lubricating oil additive properties, for example, as pour point depressants, when compared to related polymer additives made by conventional means.

Process for preparing continuously variable-composition copolymers

This invention relates to hydrogenated diolefin-lower alkyl acrylate or methacrylate copolymers and the use of these copolymers to improve the viscosity index (VI) of lubricating oils. The preferred copolymer is a fully hydrogenated, high molecular weight copolymer of 1,3-butadiene and methyl methacrylate containing at least about 71 mole percent 1,3-butadiene. A pour point depressant, VI improving polymer additive for lubricating oils is provided by incorporating a higher alkyl methacrylate in the copolymer. Further, a dispersant VI improving copolymer for lubricating oils and a dispersant for hydrocarbon fuels prepared by graft polymerizing a polar, nitrogen-containing graft monomer onto the VI improver or pour point depressant VI improver is also provided.

Hydrogenated diolefin-lower alkyl acrylate or methacrylate viscosity

Substituted phenol/epichlorohydrin/amine adducts as multipurpose, low concentration additives for hydrocarbon fuels, lubricating oils and mixtures thereof.

Multipurpose hydrocarbon fuel and lubricating oil additive

Polymeric additives comprising a diene-modified mono-olefinic backbone polymer functionalized with chlorosulfonyl isocyanate and post-reacted with a nitrogen compound. The additives impart combined detergent, viscosity index improvement and other useful properties to lubricating oils and hydrocarbon motor fuels.

Polymeric additive for lubricants and fuels

Polymerizable monomers are polymerized in a reaction mixture containing as catalysts (A) an oxygen source and (B) an organic boron compound which is soluble in the reaction mixture, the boron compound being (1) a diborane adduct wherein the boron atoms are linked by a hydrocarbyl group having an aliphatic carbon atom bonded to at least one of the boron atoms, or (2) oligomers based on repeating units containing at least two boron atoms linked by hydrocarbyl groups having an aliphatic carbon atom bonded to at least one of the boron atoms. The diborane adducts include the adduct of borane or a dialkylborane and 1,3-butadiene. The oligomers include polymers of diborane/propadiene adducts. The organoboron catalysts provide rapid initiation of polymerization and the polymerization is relatively insensitive to oxygen concentration, thereby permitting polymerization at ambient temperatures.

Polymerization with diborane adducts or oligomers of boron-containing

A new class of thermally labile compounds having rust inhibiting properties is disclosed and claimed. The compounds (or formulations thereof) are especially useful as rust inhibitors when used either alone in distillate hydrocarbon fuels or in multi-purpose additive mixtures for distillate hydrocarbon fuels having a major proportion of hydrocarbon fuel distilling within the gasoline distillation range or other oil compositions to provide rust protection in fuel distribution systems which operate at ambient temperature (e.g., pipelines, tank trucks, and storage tanks). Preferred embodiments of the invention are alkylammonium carboxylate salt-ethoxylated alkyl phenol esters of a dicarboxylic acid.

Thermally labile rust inhibitors

A mixture of (1) a substituted phenol/epichlorohydrin/amine adduct and (2) a polycarboxylic acid ester as a multipurpose, low concentration additive for hydrocarbon fuels, lubricating oils and mixtures thereof.

Multipurpose hydrocarbon fuel and lubricating oil additive mixture

A mixture of (1) a substituted phenol/epichlorohydrin/amine adduct and (2) a polyalkylene phenol as a multipurpose, low concentration additive for hydrocarbon fuels, lubricating oils and mixtures thereof.

A new multipurpose carburetor detergent for addition to gasoline is disclosed and claimed. The novel multipurpose detergent material shows excellent activity as a carburetor detergent, induction system detergent (% deposit reduction), combustion chamber detergency and, in addition, provides effective rust inhibition when used in automotive gasoline fuels at low concentrations. The new product is a polyisobutene phenol/epichlorohydrin/amine adduct. The novel product may also be described as the reaction product of a polyisobutene phenol with epichlorohydrin followed by amination with ethylene diamine.

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North Wales, PA, United States of America

Joseph M Bollinger