Witco Corporation

Crompton Gmbh

Argus Chemical Corporation

Witco Chemical Corporation

Galata Chemicals LLC

Michael H Fisch

Richard D Peveler

Radu Bacaloglu

Mark Edward Flanagan

Edward Krainer

Koei-Liang Liauw

Ulrich Stewen

R David Peveler

Mukund C Shah

George A Seubert, Jr

Barbara A Hegranes

Michael E Gelbin

Ilze Bacaloglu

Peter Frenkel

Samuel Hoch

Kook Jin Bae

Lawrence R Brecker

Otto Loeffler

Daniel R Chisolm

Daniel R Chisholm

Surinder Ahluwalia

John R Clark

Shah Mukund

Peter F Epstein

Wahib I Farahat

Julius Fakinlede

Paul E Bennett

Vito S Loiotile

A method is disclosed for stabilizing a halogen-containing polymer wherein the method comprises adding to said polymer a thermally stabilizing amount of a mixture comprising at least one polyalkylene glycol and at least one metal salt of a strong acid selected from the group consisting of perchloric acid, trifluoroacetic acid, trifluoromethanesulfonic acid, alkylsulfuric acid, phosphotungstic acid, HPF, HBF, and HSbF.

Stabilization system for halogen-containing polymers

Metal salts of organic acids complexed with &#x3b2;-diketone compounds are multifunctional complexes useful in the formulation of stabilizers for halogenated resins. These complexes may be used jointly with other low toxicity intermediates, such as zinc or magnesium intermediates, to form effective stabilizers that are non-toxic and exhibit better performance than other known stabilizers, including those containing toxic heavy metals such as cadmium or lead. The complex is prepared utilizing a Claisen condensation reaction and precipitation with water and heptane.

Complexes of metal salts of organic acids and beta-diketones and methods for producing same

Overbased metal carbonate/carboxylate microemulsions and halogen-containing polymers containing same

Heterocyclic tin compounds, useful as flame retardants and/or as smoke suppressants for halogen-containing polymers, e.g., polyvinyl chloride resins having application as wire and cable coatings, are obtained by reacting a trisubstituted triazine such as melamine with a tin-containing compound such as tin tetrachloride.

Heterocyclic tin flame retardants/smoke suppressants and halogen-containing polymer composition containing same

Process for base-promoted condensation reactions and base reagent therefor

An electrical grade polyvinyl chloride resin composition suitable for use as an electrical insulation material and avoiding the use of lead based stabilizers having a high volume resistivity when exposed to or immersed in water and a high resistance to deterioration when heated at temperatures above 100.degree. C. is disclosed. The composition is composed of an electrical grade polyvinyl chloride resin, filler, carboxylic acid ester plasticizer, at least one heat stabilizer from which cadmium and lead are substantially excluded, and as a wet resistivity agent protecting against the effective of water, a defined amount of at least one alkaline earth metal oxide or hydroxide.

Electrical grade polyvinyl chloride resin composition stabilized with a

Disclosed is a fluorophosphite compound of the formula ##STR1## This compound shows superior performance as a stabilizer in polymers, such as polypropylene, and polyvinyl chloride. Also disclosed is a process for making this compound.

Polycyclic fluorophosphites useful as stabilizers

Disclosed is a process for making compounds of the formula ##STR1## by reacting phosphorus trihalide with the corresponding phenol and fluorinating the resulting halophosphite intermediate, in the presence of a catalyst which comprises dimethylformamide.

Process for making aryl fluorophosphites useful as stabilizers

Nonylphenyl neopentylene phosphite, or stated in terms of systematic nomenclature 5,5-dimethyl-2-nonylphenoxy-1,3,2-dioxaphosphorinane, compositions effective to stabilize cellulose ester resins against the degradative effects of heat and processing are disclosed. In accordance with the present invention, preferred stabilizing compositions for cellulose ester resins include nonylphenyl neopentylene phosphite in combination with epoxidized linseed oil. These stabilizing compositions demonstrate their stabilizing effectiveness by maintaining the melt viscosity of the polymer during hot working and minimizing discoloration of the polymer when heated.

Cellulose ester resin stabilizer and cellulose ester resin compositions

Mixed esters of pentaerythritol and the like with at least two different 3-alkylthiopropionic acids are provided. Each acid from which the ester is prepared has a different alkyl group. This facilitates tailoring the mixed ester for use as a stabilizer which is especially compatible with a particular polymer resin material. Preferably, each 3-alkylthiopropionic acid is prepared by a direct addition reaction between an alkylmercaptan and acrylic acid or an alkali metal salt thereof, the reaction being carried out by heating the reactants in the presence of an aqueous alkaline solution.

Mixed s-alkylthiopropionic acid esters and polymers stabilized therewith

3-alkylthiopropionic acids are provided which are a direct addition reaction product of an alkylmercaptan and acrylic acid or an alkali metal salt thereof, the reaction being carried out by heating the reactants in the presence of an aqueous alkaline solution having a pH of at least about 11. The acids can be esterified with pentaerythritol in order to form tetraesters which are especially useful as stabilizers for polymer resins and polymers.

S-alkylthiopropionic acids and derivatives

3-alkylthiopropionic acids are provided which are a direct addition reaction product of an alkylmercaptan and acrylic acid of an alkali metal salt thereof, the reaction being carried out by heating the reactants in the presence of an aqueous alkaline solution having a pH of at least about 11. The acids can be esterified with pentaerythritol in order to form tetraesters which are especially useful as stabilizers for polymer resins and polymers.

3-alkylthiopropionic acids and derivatives

Mixed esters of pentaerythritol and the like with at least two different 3-alkylthiopropionic acids are provided. Each acid from which the ester is prepared has a different alkyl group. This facilitates tailoring the mixed esters for use as a stabilizer which is especially compatible with a particular polymer resin material. Preferably, each 3-alkylthiopropionic acid is prepared by a direct addition reaction between an alkylmercaptan and acrylic acid or an alkali metal salt thereof, the reaction being carried out by heating the reactants in the presence of an aqueous alkaline solution.

Mixed 3-alkylthiopropionic acid esters with pentaerythritol

3-alkylthiopropionic acids which are esterified with pentaerythritol are provided. The esters are solvent refined with especially effective organic solvent blends. Tetraesters thus processed are especially useful as stabilizers for polymer resins and polymers.

Alkylthiopropionic pentaerythritol esters and solvent refining thereof

High density polyethylene containing chromium catalyst residues is stabilized using a combination stabilizer system comprising 2,2'-ethylidene-bis(4,6-di-t-butylphenol), a solid polyol having from five to six carbon atoms and one alcoholic hydroxyl on each carbon, and a tris(alkylaryl)phosphite.

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Wayne, NJ, United States of America

Michael H Fisch