Pennwalt Corporation

Other

Atochem North America, Inc.

Sameeh S Toukan

Murray Hauptschein

James P King

Robert B Hager

Joseph M Bohen

Piero Nannelli

Herbert Q Smith, Deceased

By Jacqueline Smith, Legal Representative

Gerald Joseph Walter

The reaction products of the alpha-halogenated half esters or amides of succinic acid and thiadiazole dimercaptides as new compositions of matter and their use as lubricant additives possessing multifunctional properties such as extreme pressure, antiwear, antioxidant and anticorrosion.

Intermediates for preparing multifunctional thiadiazole lubricant

Multifunctional thiadiazole lubricant additives

Oil soluble lubricant additives produced by the reaction of dimercapto thiadiazoles or cyanodithioimidocarbonate polymers with a polyalkenylenesuccinimide, an aliphatic carboxylic acid and a mercaptan are disclosed.

Polymers and lubricant additives of alkylene dithiothiadiazoles and

A simple, effective and inexpensive method for cleansing dental appliances comprises the immersion of the artificial denture in a dilute aqueous solution of a carboxylic acid having the structure R(Z)COOH, where 'R' is a hydrocarbon chain and 'Z' is a hydroxy, a halo or aryl radical.

Method of cleaning dental appliances artificial dentures

Novel dimercapto thiadiazoles and cyanodithioimidocarbonate polymers and oil soluble lubricating additives thereof.

Method of preparing an oil soluble lubricant additive composition which includes forming a stable reaction product of a polymer of 3,5-dimercapto-1,2,4-thiadiazole, a polyalkylene succinimide, a fatty acid, and a mercaptan of 8 to 15 carbon atoms.

Polymeric thiadiazole lubricant additive

Fluorinated-alkyl sulfides represented by [R.sub.f (CH.sub.2).sub.n S].sub.z Q where R.sub.f is fluoroalkyl, n is 2 or 3, z is 1 or 2, and Q is an aryl, alkylaryl, alkyl heterocyclic or heterocyclic radical, are useful as surfactants or as intermediates for the preparation of salt-type, quaternary-salt, or amphoteric surfactants.

Fluorinated heterocyclic sulfides

A process for the purification of crude 2-mercaptobenzothiazole, prepared by reacting aniline, carbon disulfide and sulfur at elevated temperature and pressure is described. The process comprises the reaction of crude 2-mercaptobenzothiazole with 5-20%, preferably 10-12%, molar excess aqueous alkali metal hydroxide having a concentration of 3 to 20% by weight alkali metal hydroxide at 70.degree. to 90.degree. C. for 0.5-4 hours, with vigorous agitation, followed by filtration of the insoluble impurities and acidification of the filtrate with a non-oxidizing mineral acid, such as hydrochloric and sulfuric acids. The precipitated, filtered product is washed with water and collected in 98-100% yield and 95-98.5% purity.

Purification of 2-mercaptobenzothiazole

Processes for the manufacture of sulfenamides by the oxidation of a mixture of 2-mercaptobenzothiazole and the appropriate amine in a critical amount of water and/or organic solvent produces a pure product of good quality and high yield. The amount of water should be in the range of from 10 to 30% by weight based on the total reaction mixture.

Manufacture of sulfenamides

Flourinated-alkyl sulfides represented by [R.sub.f (CH.sub.2).sub.n S].sub.z Q where R.sub.f is fluoroalkyl, n is 2 or 3, z is 1 or 2, and Q is an aryl, alkylaryl, alkyl heterocyclic or heterocyclic radical, are useful as surfactants or as intermediates for the preparation of salt-type, quaternary-salt, or amphoteric surfactants.

Fluorinated aliphatic sulfides, represented by R.sub.f (CH.sub.2).sub.n S(CH.sub.2).sub.m Q wherein R.sub.f is fluoroalkyl, n is 2 or 3, m is an integer from 2 to 4, Q is --N(R).sub.2 or --N.sup..sym. (R).sub.2 CH.sub.2 COOH X.sup..crclbar. where X is Cl or Br, and R is an alkyl group of 1 to 4 carbon atoms, are particularly effective amphoteric surface-tension depressants or intermediates therefor.

Fluorinated aliphatic sulfides

Mixtures of alkali and alkaline earth metal salts of mercaptans or mercapto acids with specified sulfur containing organotin or antimony compounds are disclosed herein as heat stabilizers for halogenated resins.

Heat stabilizer composition for halogenated resins

The invention concerns epoxides and alcohols of the structures ##STR1## and

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Phoenixville, PA, United States of America

Sameeh S Toukan