Abstract: Hydroxyalkylphenyl ether or thioether compounds are prepared by reaction of cyclic organic carbonate compounds with phenols or thiophenols in the presence of an alkali metal halide catalyst.
Abstract: Polyether hydroxyl-containing compounds are prepared by reacting a monoepoxy-containing compound such as propylene oxide with a compound containing one or more OH and/or SH groups such as a low molecular weight adduct of glycerine and propylene oxide in the presence of a solid calcium naphthenate catalyst. The solid form of the catalyst is more efficient than the liquid form.
Abstract: Sulfuryl chloride is reacted in the liquid phase with an organic reactant which is a ketone or aromatic alcohol unsubstituted on both ortho carbons in the presence of a moderator selected from the group consisting of aliphatic alcohols of 1-3 carbons and aliphatic ethers of 2-6 carbons, with sufficient moderator being present to selectively produce a product substantially free of compounds with more than one chlorine atom per carbonyl or aromatic hydroxy. The products, such as monochloroacetone, monochlorocyclohexanone, monochlorophenol and 2,2-bis(3-chloro-4-hydroxyphenyl)propane, are useful as chemical intermediates and as monomers for flame retardant polymers.
Abstract: Sulfurized phenols, e.g., phenol sulfides, disulfides or polysulfides, oligomers thereof or mixtures of same when treated with alkyl vinyl ethers provide excellent metal anti-corrosivity characteristics without significant reduction of antioxidant, antiwear or other desired properties when incorporated into organic media such as lubricants.
Abstract: Mercaptophenols are reacted with compounds containing olefinic unsaturation, or polycyclic olefins, or dihydroxy compounds to form phenolic antioxidants such as 3,8-bis(4-hydroxyphenylthio)-tricyclo[5.2.1.0..sup.2,6 ] decane; 1,4-bis[2-(4-hydroxyphenylthio)ethyl]benzene and age resistant polymers containing said antioxidants.
Abstract: Phenol sulfides, disulfides, polysulfides and oligomers thereof when reacted with alkyl vinyl ethers provide addition products substantially comprised of novel acetal derivatives which are effective oxidation inhibitors when incorporated into organic media normally susceptible to oxidative degradation.
Abstract: Highly pure dihalodiphenols or predetermined, statistical mixtures of unreacted, monohalo- and dihalodiphenols are obtained reacting the diphenol, which is suspended or dissolved in a suitable solvent, with a halogen while concurrently purging the reaction with a gas that is inert to the reaction.
Abstract: An improved process for obtaining halogenated diphenols which can be pure dihalodiphenols or predetermined, statistical mixtures comprising unreacted diphenol, monohalodiphenols and dihalodiphenols.
Abstract: Hydroxyalkylphenyl ether compounds are prepared by reaction of cyclic organic carbonate compounds with phenols in the presence of potassium iodide catalyst.
Abstract: Phenolic materials containing propargyl groups are prepared by reacting a polyhydric, phenolic material with propargyl bromide, the reaction being conducted in an aqueous sodium hydroxide solution. The products can be thermally polymerized to polymers which are useful as adhesives and as matrix resins in the fabrication of composites.
Type:
Grant
Filed:
June 14, 1979
Date of Patent:
October 7, 1980
Assignee:
The United States of America as represented by the Secretary of the Air Force
Abstract: An improved process for obtaining halogenated diphenols which can be pure dihalodiphenols or predetermined, statistical mixtures comprising unreacted diphenol, monohalodiphenols and dihalodiphenols.