Abstract: A mixture of telomers prepared by reacting chlorotrifluoroethylene with 1,1,2-trichlorotrifluoroethane (CCl.sub.2 FCF.sub.2 Cl) is purified by reacting the telomer mixture with potassium hydroxide in the presence of a quarternery ammonium compound and, optionally, a glycol, separating and removing impurities from the telomer mixture, subsequently reacting the telomer with potassium permanganate in the presence of the quarternery ammonium compound in a solvent, and recovering a purified telomer mixture.If additional purity is required, the purified telomer mixture can be heated to a temperature of from about 150.degree. C. to about 250.degree. C. for at least 12 hours, and impurities formed during the thermal treatment are removed.The purified telomers of this invention find uses in applications requiring the use of non-flammable hydraulic fluids.

Abstract: Telomers are prepared by reacting chlorotrifluoroethylene with 1,1,2-trichlorotrifluoroethane (CCl.sub.2 FCF.sub.2 Cl) in the presence of metallic iron or stainless steel, and optionally, a halide-containing compound selected from the group consisting of tetrabutyl ammonium bromide, tetramethyl ammonium chloride, n-chlorosuccinimide, triethylamine hydrochloride, LiCl, MoCl.sub.5 and FeCl.sub.3. The reaction is conducted at a temperature of from about 150.degree. C. to about 200.degree. C. in a nitrile group-containing solvent selected from the group consisting of acetonitrile, propionitrile and ethyl cyanoacetate. Preferably, the CCl.sub.2 FCF.sub.2 Cl and chlorotrifluoroethylene are present in a mole ratio of from about 1:1 to about 3:1. respectively, to minimize the amount of high molecular weight species formed during the reaction. The telomers of this invention are useful for preparing non-flammable hydraulic fluids.

Abstract: Telomers are prepared by reacting chlorotrifluoroethylene with 1,2-dibromo-2-chlorotrifluoroethane (CBrClFCF.sub.2 Br) in the presence of a redox catalyst system comprising a metal halide selected from the group consisting of FeCl.sub.3, FeBr.sub.3, CuBr.sub.2, CuCl.sub.2, TiCl.sub.4, VCl.sub.3, and NiCl.sub.2, and a reducing agent selected from the group consisting of Fe, Ni, Cu, Ti, V and benzoin. The preferred catalyst system is ferric chloride and nickel. The telomers of this invention have the structural formula ##STR1## where n is in the range of 1 to 10, and are useful for preparing non-flammable hydraulic fluids.

Abstract: A process is disclosed for purifying and stabilizing a mixture of regular chlorotrifluoroethyelne telomers of formula RCXCl(CF.sub.2 CFCl).sub.n Br from bromine-containing irregular telomer impurities of similar molecular weight. The telomer mixture is produced by reacting chlorotrifluoroethylene with a telogen of formula RCXClBr, where R is CF.sub.2 Br, or Cl, and X is Cl or F. The telomer mixture is then chlorinated using either elevated temperature alone (100.degree. C.-350.degree. C.), or a combination of elevated temperatures (100.degree. C.-200.degree. C.) and light energy primarily of the wavelength region greater than about 3000.degree.A. Under these conditions, CFClBr telomer end group of the regular or normal telomer is chlorinated to form --CFCl.sub.2 end groups, while the bromine-containing irregular telomer impurities (whose bromine-containing end groups are substantially only --CF.sub.2 Br) are substantially not chlorinated.

Abstract: An improved process for preparaing telomers of chlorotrifluoroethylene comprises the solution telomerization reaction of chlorotrifluoroethylene with carbon tetrachloride in the presence of a catalytic amount of cupric chloride (CuCl.sub.2) and an iron reductant. Preferably, the solvent for the system comprises acetonitrile, and the telomerization is carried out under elevated pressure conditions and at a temperature in the range of from about 90.degree. C. to about 150.degree. C. The crude telomer prepared by this process can be fluorinated to produce a stabilized oil or grease.

Abstract: An improved process for curing sulfhydryl-terminated thioether polymers substantially devoid of aliphatic unsaturation having a sulfhydryl functionality of 2 to 3 to obtain thioether elastomers is disclosed wherein the liquid thioether is reacted with a curing amount of tertiary butyl perbenzoate. Preferably the curing reaction is carried out at about ambient temperature in the presence of a copper, especially a divalent copper, promoter for the reaction. The improved curing process shortens the curing time and extends the effective working life of the curing reaction mixture. The cured products are of enhanced thermal stability and are useful as elastomeric sealants such as architectural sealants.

Abstract: An improved process is disclosed for production of sulfhydryl-terminated compounds by reaction of an allene and hydrogen sulfide initiated with ultraviolet light of wavelength above about 2600 Angstroms to obtain a colorless product of improved purity. The invention also includes the polymerization of an unsaturated hydrocarbon with the sulfhydryl-terminated product to prepare a sulfhydryl-terminated polythioether. These compounds are useful as chemical intermediates and precursors of elastomeric sealants, such as architectural sealants.

Abstract: An improved process for production of sulfhydryl-terminated compounds by reaction of an allene compound and hydrogen sulfide is disclosed wherein the reaction is carried out in the presence of ultraviolet light of wavelength substantially above 2600 Angstroms and of an organic photosensitizing reagent to obtain a substantially colorless product of improved purity at an increased reaction rate. The invention also includes polymerization of the crude sulfhydryl-terminated product with an unsaturated compound to prepare sulfhydryl-terminated polythioethers which are useful as chemical intermediates and precursors of elastomeric sealants, such as architectural sealants.

Abstract: This invention relates to novel aromatic compounds and to novel aromatic polymers of the compounds. The compounds of the present invention are cyclic ethers of orthobisphenol having the following structure: ##STR1## wherein R is independently selected from the group of hydrogen, chlorine, bromine or fluorine. The compounds of the present invention may be easily polymerized and the polymers exhibit good stability at high temperatures. The polymers are useful as molding compounds in applications where phenol-aldehyde and phenol-ketone condensates are now used.

Abstract: A sealant system comprising as a first component a mercaptan-terminated polythioether of the formulaHS[ (RS).sub.n R.sup.1 S].sub.m (RS).sub.n Hwhere R is propylene or trimethylene or mixtures thereof, R.sup.1 may be propylene or mixture of propylene and a substituted cyclohexane radical of the formula ##STR1## wherein the substituted cyclohexane radical is present at about 0.1 to about 3 mole percent of the total moles of R, n is 1 to about 10 and m is 1 to about 200; a filler such as calcium carbonate; a plasticizer selected from the group consisting of chlorinated methylstearate or a phthalate ester or mixtures thereof; an adhesion additive selected from gamma-mercaptopropyltrimethoxysilane and gamma-glycidoxypropyltrimethoxysilane; and a cure accelerator, selected from the group, tetraethylthiuram disulfide, tetramethylthiuram disulfide, para-quinone dioxime, and tri(dimethylamino)phenol and mixtures thereof, and as a second component, manganese dioxide or lead dioxide.

Abstract: The present invention relates to polymer compositions and to a process of producing phenolic novolak resins having a high phosphorus content. It is known that phenolic novolak resins may be reacted with P.sub.2 O.sub.5. However, it has now been found that if the novolak has substantially entirely ortho-ortho linkage the amount of phosphorus, suitably in the form of P.sub.2 O.sub.5, P.sub.2 S.sub.5, P.sub.2 O.sub.3 or mixtures thereof, that may be reacted is greatly increased and the polymer produced has enhanced fire-retardant properties. The present polymers have a wide utility in the production of flame-retardant molding compositions and laminates.

Abstract: An improved process for production of sulfhydryl-terminated compounds by reaction of an allene compound and hydrogen sulfide is disclosed wherein the reaction is carried out in the presence of ultraviolet light of wavelength substantially above 2600 Angstroms and of an organic photosensitizing reagent to obtain a substantially colorless product of improved purity at an increased reaction rate. The invention also includes polymerization of the crude sulfhydryl-terminated product with an unsaturated compound to prepare sulfhydryl-terminated polythioethers which are useful as chemical intermediates and precursors of elastomeric sealants, such as architectural sealants.

Abstract: An improved process is disclosed for production of sulfhydryl-terminated compounds by reaction of an allene and hydrogen sulfide initiated with ultraviolet light of wavelength above about 2600 Angstroms to obtain a colorless product of improved purity. The invention also includes the polymerization of an unsaturated hydrocarbon with the sulfhydryl-terminated product to prepare a sulhydryl-terminated polythioether. These compounds are useful as chemical intermediates and precursors of elastomeric sealants, such as architectural sealants.