Abstract: An aromatic carbonate having the formula: ##STR1## wherein R' is alkyl and R is alkyl, alkoxy, aryl, aryloxy or NO.sub.2, is prepared by reacting the related phenol or an acyl ester thereof with an alkyl, cyclic or aryl-alkyl carbonate in the presence of a catalyst such as AlCl.sub.3.

Abstract: Phenylalkyl sulphones of the formula ##STR1## wherein R represents hydrogen, halogen or alkyl of 1 to 4 carbon atoms,R.sub.1 represents alkyl of 1 to 4 carbon atoms, andR.sub.2 represents hydrogen, and, if R is hydrogen, or alkyl, also represents nitro,Are obtained by reaction of a corresponding sulphinic acid derivative or a salt thereof with a dialkyl alkanephosphonate.

Abstract: A process for the preparation of an ester of chiral (A) acid with a racemic (R,S) .alpha.-cyano-3-phenoxybenzyl alcohol (B) by reacting an ester of chiral (A) acid with .alpha.-cyano-3-phenoxybenzyl alcohol of the formula ##STR1## in its optically active (R) form or (S) form or a mixture of esters of said (R) alcohol and (S) alcohol in non-equimolecular proportions with a base selected from the group consisting of ammonia, primary, secondary and tertiary amines, quaternary ammonium compounds, liquid amines of high molecular weight and a catalytic amount of a strong base in at least one solvent for the starting esters and in which the ester of racemic alcohol is soluble and recovering from the resulting solution the ester of chiral (A) acid with racemic (R,S) alcohol.

Abstract: Phenols of the formula I ##STR1## wherein N HAS A VALUE FROM 1 TO 15,Each of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently is a hydrogen atom, a C.sub.1 -C.sub.18 -alkyl group, an aryl group, a C.sub.5 -C.sub.12 -cyclo-alkyl group or a C.sub.7 -C.sub.13 -aralkyl group,R.sub.5 is a hydrogen atom or a C.sub.1 -C.sub.18 -alkyl group,Y is a carbonyl, thiocarbonyl, sulphinyl, sulphonyl, --P(OR.sub.7)--P(.dbd.O)(OR.sub.7)--, --P(.dbd.O)(R.sub.7)-- or --P(R.sub.7)-- group, and R.sub.6 is a radical --CHR.sub.8 --CHR.sub.9 --S--CR.sub.10 R.sub.11 R.sub.12, wherein each of R.sub.8 and R.sub.9 independently is a hydrogen atom or a C.sub.1 -C.sub.6 -alkyl group, R.sub.10 is a hydrogen atom, a C.sub.1 -C.sub.19 -alkyl group, a C.sub.2 -C.sub.4 -alkenyl group or an aryl group, R.sub.11 is a hydrogen atom or a methyl group and R.sub.12 is a hydrogen atom or a methyl group, or, if R.sub.11 is a hydrogen atom, is a C.sub.2 -C.sub.6 -alkyl group, or, if R.sub.10 is a hydrogen atom, R.sub.11 and R.sub.

Abstract: Disclosed are tris(allyl carbonate) monomers and polymers made therefrom.

Abstract: 2-Mercapto phenol and/or 4-mercapto phenol are reacted with a compound selected from olefins, alcohols, and organic halides for example, styrene and isobutylene, to form (hydrocarbyl) thio phenolic antioxidants such as 2,6-di-tert. butyl-4-(tert.butylthio) phenol and 2,6-di(.alpha.-phenylethyl)-4-(.alpha.-phenylethylthio)phenol.

Abstract: The present invention is concerned with an improved process for the preparation of trimethylsulfoxonium bromide. The improvement in the process comprises the addition of a scavenger to the reaction mixture of dimethyl sulfoxide and methyl bromide.

Abstract: Novel salts of 1,3-bis-(.beta.-ethylhexyl)-5-amino-5-methyl-hexahydropyrimidine (hexetidine) with substituted benzoic acids and processes of preparing these salts are described. These novel salts have useful bacteriostatic activity and show stability in storage. The invention accordingly comprises compositions containing the novel salts and having bacteriostatic activity.

Abstract: An oral therapeutic substance is formed by modifying a plaque-dispersing enzyme to control and reduce the occurrence of dental caries and periodontal diseases. In one embodiment, the modification is performed by introducing a suitable complexing reagent in combination with carrier and plaque-dispersing glucanohydrolase molecules to molecularly alter the glucanohydrolase. The modification, while having insignificant effects on the catalytic activity of the enzyme, will increase the binding capability of the enzyme to substances of which the tooth surface is formed. The activity of the enzyme on the tooth surface will therefore be maintained for longer periods of time to combat plaque build-up.

Abstract: Dicyclododecyl peroxydicarbonate of the formula: ##STR1## is stable and can be stored at room temperature. It has a high solubility in organic solvents and good compatibility with unsaturated polyester resins.This compound is an improved polymerization initiator for free radical polymerizations of ethylenically unsaturated monomers, including copolymerization with monomers capable of copolymerizing therewith.This compound also is a catalyst for curing unsaturated polyester resin compositions.

Abstract: A process for the preparation of chloroformates having terminal acrylic or methacrylic groups, comprises reacting at least one hydroxyalkyl acrylate or methacrylate with phosgene by introducing a solution of the acrylate or methacrylate into a solution of phosgene, while stirring, at a temperature of -25.degree. C to +5.degree. C, in the presence of an acid acceptor and a stoichiometric excess of phosgene.The products thus obtained are monomers suitable for the production of acrylic polymers carrying reactive groups.

Abstract: A process for the preparation of an ester of chiral (A) acid with an optically active (S) .alpha.-cyano-3-phenoxybenzyl alcohol by reacting an ester of chiral (A) acid with .alpha.-cyano-3-phenoxybenzyl alcohol of the formula ##STR1## in its optically active (R) form or a racemic (R,S) mixture or a mixture of esters of said (R) alcohol and (S) alcohol in non-equimolecular proportions designated herein as "ester (R+S)" with a base selected from the group consisting of ammonium hydroxide, primary, secondary and tertiary amines, quaternary ammonium compounds, liquid amines of high molecular weight, ion exchange resins of a basic character and a catalytic amount of a strong base in at least one solvent in which the ester of the (R) alcohol is soluble and in which the ester of the (S) alcohol is insoluble and recovering from the resulting medium the chiral (A) acid ester of the (S) alcohol which is insoluble.

Abstract: The new composition 4,4'-bis(3-ethynylphenoxy)diphenylsulfone is prepared by the nucleophilic displacement reaction of m-hydroxy-phenyl acetylene with various disubstituted diphenylsulfones. The composition is useful as a composite resin and also as a reactive plasticizer for polysulfone thermoplastic resins. A reactive plasticizer is a material that remains fluid and acts as a plasticizer during early stages of fabrication and then polymerizes to a rigid resin.

Abstract: Novel betaine compounds derived from higher alkyl dimethyl carboxylic acid quaternary ammonium compounds; the process of preparing said betaines; and compositions containing an effective antimicrobial amount of said betaines admixed with a pharmaceutical carrier. These compounds are effective in controlling dental plaque without producing an esthetically unacceptable discoloration of tooth surfaces.

Abstract: A process for reducing aromatic sulfonyl halides with hydrogen sulfide. Hydrogen sulfide is contacted with sulfonyl halides preferably in the presence of a solvent and of a catalyst. The reaction forms thiols and proceeds in the range of between about 50.degree. and 300.degree. C. There is little formation of disulfide and no cleavage of the thiol group.

Abstract: This invention provides .alpha.-substituted-vinyl menthyl carbonate esters, and further provides menthol-release oligomeric and polymeric derivatives thereof corresponding to the formula: ##STR1## WHEREIN R is a member selected from the group consisting of aliphatic, alicyclic and aromatic hydrocarbon radicals containing between 1 and about 10 carbon atoms, and n is an integer varying between 2 and about 200.This invention further provides a smoking composition comprising an admixture of tobacco and a polymeric composition as described herein as a menthol-release agent.

Abstract: A process for preparing alkaline earth metal mercaptides in a two-step process, useful as synergists for organotin stabilizers in halogen containing resins such as polyvinyl chloride, comprising: (1) reacting a metallic oxide or hydroxide of the metal desired in the final mercaptide; a magnesium, aluminum or calcium alkoxide; and an alcohol to provide an alkoxide of the metal of the final mercaptide; and then (2) reacting the final alkoxide of (1) with a mercaptan to provide the desired metal mercaptide.

Abstract: A phenol is reacted with sulphur trioxide in the presence of liquid hydrogen fluoride to form a 4,4'-dihydroxydiphenylsulphone. A molar excess of hydrogen fluoride and stoichiometric proportions of sulphur trioxide and phenol or a slight excess of sulphur trioxide over phenol are preferred.

Abstract: Industrially useful alkylphenyl sulfides are produced in high yield from phenyl mercaptan as a raw material by reaction of the phenyl mercaptan with an alkyl alcohol or dialkyl ether, or alkyl mercaptan or dialkyl sulfide having 1 to 4 carbon atoms as a novel alkylating agent at an elevated temperature, for example, 150.degree. to 600.degree. C, in a gaseous phase.

Abstract: High molecular weight polysulfide polymers are produced by a novel process using polythiodiglycol, polymerizing it with an acid catalyst and with means for removing the water of reaction to make a medium molecular weight halogen-terminated polymer. The resultant halogen-terminated polymer may then be reacted with sodium polysulfide to form a latex dispersion of very high molecular weight. The dispersion may then be converted to --SH terminated polymers by the usual methods.