Abstract: A novel process for producing 2-chloro-1,3-diketo compounds of the formula ##STR1## wherein Q is an amino, substituted amino or hydrocarbyloxy group, e.g., --OCH.sub.3, wherein the 1,3-diketo precursor in solution in a low boiling alcohol is neulized in a special chlorinator with chlorine or a mixture of nitrogen and chlorine, and wherein the chlorination of the nebulized precursor solution takes place extremely rapidly at relatively high temperatures in a chlorination zone, the product being recovered by condensation on the cooled chlorinator walls and stripping of the alcohol solvent. A representative product is 2-chloro-N,N-dimethylacetoacetamide (2CDMAA), a useful intermediate for the production of insecticides, drugs, dyes and other complex compounds.

Abstract: The present invention provides a novel process for preparing specified amorphous polycarbonate polyols. The process comprises reacting phosgene, a branched-chain polyhydric alcohol, and a straight chain polyhydric alcohol in the presence of a solvent and in the absence of a catalyst at a temperature of about 60.degree. to 100.degree. C., and then contacting the amorphous polycarbonate product in the reaction mixture with a catalytic amount of a tertiary amine at reflux temperature for a period of time of at least about 30 minutes. The straight chain polyhydric alcohol is employed in an amount of about 3 to 40 mole percent, based upon the total amount of polyhydric alcohol present in the reaction system. A preferred branched-chain polyhydric alcohol is neopentyl glycol, and a preferred straight chain polyhydric alcohol is 1,6-hexanediol. Preferred solvents are xylene and toluene, and preferred tertiary amines are triethylamine and pyridine.

Abstract: Disclosed is a process and apparatus for the chlorination of diketene, by contacting the diketene in nebulized form with chlorine gas, which contacting can be in the absence of a solvent or diluent, in an essentially uncooled reaction zone of short residence time followed by a cooling zone wherein at least a portion of the heat of reaction is removed from the product without the need for refrigeration.

Abstract: The present invention provides a novel linear amorphous aromatic polyester comprising units derived from (i) terephthalic acid, (ii) 1,2-propanediol or mixtures of 1,2-propanediol with up to 20 mole percent of ethylene glycol, based upon the total of 1,2-propanediol and ethylene glycol, and (iii) about 5 to 30 mole percent, based upon the total of (i), (ii), and (iii), of a glycol which contains a tertiary amine group, the amine containing glycol having a specified structure and the polyester having an inherent viscosity of about 0.05 to 0.5 dl/g when measured in 60:40 phenol:tetrachloroethane at a concentration of 0.5 g/100 ml at 25.degree. C. The novel polyester is useful as a crosslinking resin and as a photoinitiator for UV curable coating and ink compositions.Also provided is a specified ultraviolet radiation curable coating composition. The composition comprises a mixture ofA. about 4.5 to 49.5% by weight of the novel amine-modified polyester described above;B.

Abstract: The present invention provides a novel linear amorphous aromatic polyester comprising units derived from (i) terephthalic acid, (ii) 1,2-propanediol or mixtures of 1,2-propanediol with up to 20 mole percent of ethylene glycol, based upon the total of 1,2-propanediol and ethylene glycol, and (iii) about 5 to 30 mole percent, based upon the total of (i), (ii), and (iii), of a glycol which contains a tertiary amine group, the amine containing glycol having a specified structure and the polyester having an inherent viscosity of about 0.05 to 0.5 dl/g when measured in 60:40 phenol:tetrachloroethane at a concentration of 0.5 g/100 ml at 25.degree. C. The novel polyester is useful as a crosslinking resin and as a photoinitiator for UV curable coating and ink compositions.Also provided is a specified ultraviolet radiation curable coating composition. The composition comprises a mixture ofA. about 4.5 to 49.5% by weight of the novel amine-modified polyester described above;B.

Abstract: This invention relates to a series of photoinitiator combinations comprising mixtures of a primary photoinitiator in combination with N-halosuccinimides, N-haloacetanilides and N-halobenzanilides and photopolymerizable composition containing such combinations.

Abstract: Ethylenically unsaturated compositions such as acrylic and methacrylic acid esters, vinyl esters, vinyl halides, unsaturated amides such as acrylamide, vinyl aromatics such as styrene, and various aliphatic and aromatic polyesters containing any of the above or other modifying components such as maleic, fumaric, itaconic, citraconic and the like, are very effectively and rapidly cured with certain 5-halo-6-halomethyluracil photoinitiators. These curable systems have extensive utility in the surface coatings industry, particularly in regard to cured protective coatings.

Abstract: Novel radiation-curable coating compositions comprising curable cellulose esters dissolved in unsaturated monomer and containing a photoinitiator. In particular, the cellulose ester contains a .beta.-alkyl amino or .beta.-arylamino carboxylate moiety. Exposure of these compositions to ultraviolet radiation in the presence of ketonic photoinitiators gives clear insoluble coatings which are useful as protective coatings for substrates such as wood, glass, aluminum, and steel.

Abstract: This invention relates to radiation curable compositions of radiation polymerizable unsaturated materials, and particularly concerns photoinitiators therefor comprising manganese carbonyl admixed with any of a variety of sulfonyl chloride compounds. The monomers initiated with these materials have high polymerization rates which permit faster curing cycles.

Abstract: This invention describes novel radiation curable cellulose ester compositions comprising a carboxylated cellulose ester, a glycidyl acrylate or methacrylate, and an effective amount of a photoinitiator. These compositions, when cured, give hard, tough coatings with excellent adhesion to certain metals.

Abstract: Plastic sheeting and other formed plastic articles, particularly of cellulose ester, having an improved overall balance of physical properties such as impact strength, solvent resistance, surface hardness and surface appearance are obtained by applying radiation curable compositions containing certain unsaturated cellulose ester materials to one or more surfaces of the articles and radiation curing the same.

Abstract: This invention relates to 3,4-bis(halomethyl) benzophenone photoinitiators and these initiators admixed with unsaturated photopolymerizable compounds. When such compositions are irradiated by ultraviolet light, the benzophenone derivatives split off free radicals which initiate the photopolymerization of the unsaturated photopolymerizable compounds.

Abstract: This invention relates to 3,4-bis(halomethyl) benzophenone photoinitiators and these initiators admixed with unsaturated photopolymerizable compounds. When such compositions are irradiated by ultraviolet light, the benzophenone derivatives split off free radicals which initiate the photopolymerization of the unsaturated photopolymerizable compounds.

Abstract: The invention relates to photopolymerizable polymeric compositions useful as coating and moldable compositions which are hardenable by ultraviolet radiation. These coating and moldable compositions comprise mixtures of photopolymerizable or photocrosslinkable unsaturated compounds and at least one photoinitiator selected from the group consisting of haloalkyl carboalkoxy substituted aromatic ketones.

Abstract: The invention relates to photopolymerizable polymeric compositions useful as coating and moldable compositions which are hardenable by ultraviolet radiation. These coating and moldable compositions comprise mixtures of photopolymerizable or photocrosslinkable unsaturated compounds and at least one photoinitiator selected from the group consisting of halogenated heterocyclic compounds having at least one diazole or triazole group and at least one benzyl halide group.

Abstract: Disclosed are TiO.sub.2 pigments treated to decrease their photosensitizing propensity and their tendency to degrade polymeric materials. Commercial TiO.sub.2 pigments, both anatase and rutile, treated according to the present invention with manganous, cobaltous or cerous salts, particularly acetate, are effectively desensitized.

Abstract: Compositions comprising a photocurable ethylenically unsaturated compound and an S-aryl arylcarbothioic acid ester or a bis-S-aryl aryl-dicarbothioic acid ester.

Abstract: The invention relates to stabilized photopolymerizable or photocrosslinkable polymeric compositions having improved storage stability. These compositions are useful as coating and moldable compositions which are hardenable by ultraviolet radiation. These coating and moldable compositions comprise mixtures of photopolymerizable or photocrosslinkable unsaturated compounds, at least one photoinitiator and a particular nitrone.

Abstract: The invention relates to photopolymerizable polymeric compositions useful as coating and moldable compositions which are hardenable by ultraviolet radiation. These coating and moldable compositions comprise mixtures of photopolymerizable or photocrosslinkable unsaturated compounds and at least one photoinitiator selected from the group consisting of halo-alkyl substituted aromatic ketones.

Abstract: the invention relates to photopolymerizable polymeric compositions useful as coating and moldable compositions which are hardenable by ultraviolet radiation. These coating and moldable compositions comprise mixtures of photopolymerizable or photocrosslinkable acrylates of bis-(hydroxyalkyl) terephthalates and isophthalates in combination with at least one ethylenically unsaturated monomer component and a photoinitiator.