Abstract: A method and apparatus for continuously introducing samples for mass spectrometry analysis which comprises providing sample molecules in an aqueous solution containing one or more organic solvents, preferably ethylene glycol, introducing said aqueous solution into the vacuum chamber of an ion source to enable said solution to solidify into a thread of solid matrix, and exposing the solid matrix to a source of energy to desorb sample molecules to be analyzed. The desorbed molecules are then photoionized and focused into a mass spectral analysis zone. The technique is suitable for interfacing liquid chromatographic separation techniques.

Abstract: Disclosed is a process for making quinones by oxidation of dihydroxyaromatic compounds in the presence of oxygen using supported platinum catalysts.

Abstract: Provided are novel thermosetting coating compositions comprised of a an epoxy containing acrylic copolymer and 1,3- and/or 1,4-cyclohexanedicarboxylic acid as crosslinking agents. Also provided are shaped or formed articles coated with the cured compositions. The compositions of the invention were found to provide coatings with markedly superior hardness.

Abstract: Disclosed are certain ketoxime-blocked polyisocyanates and polyester compositions containing the ketoxime-blocked polyisocyanates. Also disclosed are thermosetting powder coating compositions comprising one or more polyesters and at least one of the ketoxime-blocked polyisocyanates and articles coated with the powder coating compositions.

Abstract: Disclosed are certain ketoxime-blocked polyisocyanates and polyester compositions containing the ketoxime-blocked polyisocyanates. Also disclosed are thermosetting powder coating compositions comprising one or more polyesters and at least one of the ketoxime-blocked polyisocyanates and articles coated with the powder coating compositions.

Abstract: Disclosed are carboxyl polyesters which are useful in the formulation of powder coating compositions. The polyesters are characterized by the presence of terminal carboxycyclohexanecarboxylate groups. Also disclosed is a process for the preparation of the carboxyl polyesters from similar hydroxy polyesters.

Abstract: Method for the highly selective transesterification of alkyl 3-alkoxypropionates, as well as several novel alkoxypropionate compounds, are provided. Transesterification catalyzed by titanium alkoxides or tin compounds does not catalyze the Michael reaction, and therefore, provide highly selective transesterification reactions of these reactive materials.

Abstract: Method for the highly selective transesterification of alkyl 3-alkoxypropionates, as well as several novel alkoxypropionate compounds, are provided. Transesterification catalyzed by titanium alkoxides or tin compounds does not catalyze the Michael reaction, and therefore, provide highly selective transesterification reactions of these reactive materials.

Abstract: Disclosed is an improved process for the preparation of alkyl 3-alkoxypropionates by the reaction of a dialkoxymethane with a diketene in the presence of methanedisulfonic acid, methanetrisulfonic acid or mixture thereof.

Abstract: Disclosed is an improved process for the preparation of alkyl 3-alkoxypropionates containing at least seven carbon atoms by the reaction of dialkoxymethane containing five or more carbon atoms with a ketene in the presence of a catalytic amount of the reaction product of an alkylcarboxylic acid anhydride and concentrated or fuming sulfuric acid.

Abstract: The present invention relates to a novel coating composition which contains a coalescent. The coating composition comprises a latex of a normally solid organic addition polymer and a coalescing amount of an ether-ester solvent having formula (I) or (II) ##STR1## where R represents hydrogen or an alkyl group of 1 to 4 carbon atoms, R' represents a C.sub.1 -C.sub.4 alkyl group, and n is 1 or 2. Preferred coalescents include 2-ethoxyethyl p-toluate, 2-ethoxyethyl benzoate, 2-(2-ethoxyethoxy)ethyl p-toluate, 2-(2-ethoxyethoxy)ethyl benzoate, 2-propoxyethyl o-toluate, 2-propoxyethyl benzoate, 2-ethoxyethyl o-toluate, 2-methoxy-1-methylethyl benzoate and mixtures thereof. In preferred embodiments, the organic addition polymer comprises an acrylic homopolymer or copolymer. The coating composition preferably comprises about 5-50 parts by weight of the ether-ester solvent per 100 parts of the organic addition polymer.

Abstract: The present invention provides an improvement in methods for preparing and processing ethylenically unsaturated aromatic monomer. The improvement comprises employing 3,5-dinitrosalicylic acid or a derivative or isomer thereof as a process inhibitor. The process inhibitor is present in a concentration of about 50 to 3000 ppm, preferably about 250 to 2,000 ppm, and most preferably about 500 to 1,000 ppm.

Abstract: The present invention relates to a novel coating composition which contains a coalescent. The coating composition comprises a latex of a normally solid organic addition polymer and a coalescing amount of an ether-ester solvent having the formula ##STR1## where R represents hydrogen or an alkyl group of 1 to 4 carbon atoms, R' represents a C.sub.1 -C.sub.4 alkyl group, and n is 1 or 2. Preferred coalescents include 2-ethoxyethyl p-toluate, 2-ethoxyethyl benzoate, 2-(2-ethoxyethoxy)ethyl p-toluate, 2-(2-ethoxyethoxy)-ethyl benzoate, 2-propoxyethyl o-toluate, 2-propoxyethyl benzoate, 2-ethoxyethyl o-toluate, and mixtures thereof. In preferred embodiments, the organic addition polymer comprises an acrylic homopolymer or copolymer. The coating composition preferably comprises about 5-50 parts by weight of the ether-ester solvent per 100 parts of the organic addition polymer.

Abstract: The present invention provides an improvement in methods for preparing and processing ethylenically unsaturated aromatic monomer. The improvement comprises employing 3,5-dinitrosalicylic acid as a process inhibitor. The DNSA is present in a concentration of about 50 to 3000 ppm, preferably about 250 to 2000 ppm, and most preferably about 500 to 1000 ppm.

Abstract: Disclosed are copolyesters derived from 100 mole % of a dibasic acid component, at least 2 mole % of which is the reaction product of ethylene and at least one dialkyl ester of an aliphatic or cycloaliphatic dibasic acid, said dibasic acid containing from 3 to 22 carbon atoms and the alkyl groups of wich contain from 1 to 8 carbon atoms, and 100 mole % of at least one aliphatic or alicyclic glycol having 2 to 12 carbon atoms. These polyesters are useful as adhesives.

Abstract: Disclosed are copolyesters derived from 100 mole % of a dibasic acid component, about 2-30 mole % of which is the reaction product of ethylene and at least one dialkyl ester of an aliphatic or cycloaliphatic dibasic acid, said dibasic acid containing from 3 to 22 carbon atoms and the alkyl groups of which contain from 1 to 8 carbon atoms, and 100 mole % of at least one aliphatic or alicyclic glycol having 2 to 12 carbon atoms. These polyesters have a crystalline melting point of at least 200.degree. C. and are useful in the form of fibers, films, and molded objects.

Abstract: The process of electrochemically oxidizing phenol to hydroquinone is improved by the inclusion of chromium ion in the aqueous reaction medium.

Abstract: The process of electrochemically oxidizing phenol to hydroquinone is improved by employing a corrosion resistant lead-thallium alloy anode while maintaining the concentration of p-benzoquinone in the aqueous reaction medium at a low level.

Abstract: In the electrochemical oxidation of phenol the concentration of p-benzoquinone is maintained at a low level and the formation of tars is substantially retarded by the continuous or intermittent addition of copper to the electrolytic cell.

Abstract: An electrolytic cell useful in the oxidation of organic compounds is disclosed. The cell provides a more uniform current density by shielding areas of non-uniform electrode spacing, thereby minimizing tar formation, power losses and undesirable reactions of oxidized products.