Showing papers on "Triphenyl phosphate published in 1994"

Synthesis of Triphenyl Phosphate and Benzyl Benzoate with Phase-Transfer Catalyst in a Heterogeneous Liquid-Liquid Reaction System

Abstract: The synthetic reactions of triphenyl phosphate from diphenylphosphoryl chloride and sodium phenoxide and of benzyl benzoate from benzyl chloride and sodium benzoate with phase-transfer catalyst were studied in a heterogeneous liquid-liquid reaction system using an agitated vessel with a flat interface. Tetrabutylammonium bromide and 1,2-dichloroethane were used as a catalyst and a solvent, respectively. The behavior of the observed overall reaction rates was explained well by the proposed model. The overall reaction rates were proportional to the organic-phase interfacial concentrations of the actual reactants, tetrabutylammonium phenoxide for the synthesis of triphenyl phosphate and tetrabutylammonium benzoate for that of benzyl benzoate. Their interfacial concentrations were a unique function of the concentrations of tetrabutylammonium bromide and the respective sodium salts. The intrinsic reaction rate constants, for the synthetic reactions of triphenyl phosphate and benzyl benzoate, which were evaluated by fitting the rate data to the model prediction, were 2.33X10 6 and 2.56 m 3 /kmol.s at 303K, respectively

Lubricating oil composition for hfc fluorocarbon compressor, improvement of lubricating property of hfc fluorocarbon compressor and actuation fluid composition containing the same lubricating oil composition

Abstract: PURPOSE: To obtain a lubricating oil composition useful for an air conditioner for an automobile, capable of extremely reducing wear of a bearing and a sliding part of an HFC compressor, stably preventing wear for a long period of time and effectively suppressing formation of sludge, comprising a tri(alkylphenyl) phosphate and triphenyl phosphate as essential components. CONSTITUTION: This composition comprises (A) a mineral oil and/or a synthetic oil as a base oil for a lubricating oil, (B) 0.2-4.0wt.% of one or more of tri(alkylphenyl) phosphates of the formula (R is a 1-4C alkyl; (n) is 1-2) and (C) 0.03-1.5wt.% of triphenyl phosphate. Any of tricresyl phosphate, trixylenyl phosphate, tri(mono-n-butylphenyl) phosphate and tri(mono-t-butylphenyl) phosphate is used as the component B. The ratio of the component B to the component C is preferably 5:1 to 1.5:1. The component A is preferably a polyoxyalkylene glycol derivative.

Effect of Triaryl Phosphate, Zinc and Zinc Borate on Fire Properties of High Impact Polystyrene and High Impact Polystyrene-Polyphenylene Oxide Blend (Modified-Polyphenylene Oxide:

Abstract: Samples of m-PPO (virgin and flame retarded) and high impact polystyrene blended with zinc and zinc borate (2ZnO·3B2O3·3.5H 2O), were pre pared. The effect of triaryl phosphate on the flame retardancy of PPO-HIPS in conjunction with zinc and zinc borate was studied.For polystyrene zinc borate shows some reduction in smoke generation. Zinc, however does not show any effect on smoke generation for high impact polystyrene. Triphenyl phosphate shows minimal flame retardancy in HIPS which is not enhanced by zinc.Addition of zinc gives an increase in oxygen index for FR m-PPO, whereas zinc borate decreases the OI values. Zinc borate may sequester triaryl phos phate and thus eliminate its vapor phase activity. Zinc borate shows a signifi cant reduction in smoke generation and rate of heat release for m-PPO.

Polybrominated phenylphosphate flame retardent for engineering thermoplastic compositions

Abstract: Flame retarding resin compositions having good thermal stability and good impact resistance. The composition comprises a thermoplastic resin selected from the group of polycarbonate, polybutylene terephthalate, polyethylene terephthalate, and blends and alloys of polycarbonate with polybutylene terephthalate, polyethylene terephthalate and acrylonitrile-butadiene-styrene, and a flame retarding amount of a melt-blendable, solid polybrominated triphenyl phosphate ester selected from tris(dibromophenyl)phoshate and bis(tribromophenyl)phenylphosphate, and less than 5% antimony oxide or halogenated organic.

Flame-retarding heat-resistant impact-resistant resin composition of excellent processability

Abstract: PURPOSE:To obtain the resin composition by mixing a thermoplastic resin with a specified polyphenylene ether and a phosphorus-containing flame retardant CONSTITUTION:This resin composition comprises 100 ptswt resin component comprising a thermoplastic resin (eg polystyrene thermoplastic resin or a rubber-modified styrene resin) and a polyphenylene ether (eg poly(2,6- dimethyl-1,4-phenylene ether) having a weight-average molecular weight of 30000-50000 and a weight-average molecular weight to number-average molecular weight ratio of 20-30, 1-40 ptswt phosphorus-containing flame retardant such as an organo-phosphorus compound (eg triphenyl phosphate) or red phosphorus, and optionally 0-30 ptswt triazine compound, 0-10 ptswt fluororesin and 0-10 ptswt higher fatty acid amide compound

Production of cellulose ester film

Abstract: PURPOSE:To produce a cellulose ester film stable even under severe conditions by using triphenyl phosphate having an acidic impurity content lower than a specified value as the plasticizer of the film. CONSTITUTION:Triphenyl phosphate having an acidic impurity content lower than 0.50mol% (based on the phosphate) is used as the plasticizer for producing the film. The obtd. film is suitable for a carrier of a silver halide photographic material, a protective film of a polarizing plate, etc., hardly under goes any decrease in viscosity, i.e., a decrease in the degree of polymn., even under such severe conditions as in a tightly sealed metal case or at high temp. and humidity, and hence is excellent in weatherability, resistances to wet heat and dark wet heat, and storage stability.

Flame-retardant resin composition

Abstract: PURPOSE:To obtain the subject composition containing a specified ratio of a melamine-modified phenol formaldehyde, a phosphate and an ammonium phosphate, excellent in environmental safety and useful for a paper-phenol resin copper-clad laminate. CONSTITUTION:This resin composition contains (A) 30 to 80wt.% the nitrogen content is preferably 2 to 30wt.%) melamine-modified phenol formaldehyde [e.g. (i) a cocondensed material among a phenol such as xylenol, a melamine such as benzoguanamine and formaldehyde, (ii) a mixture of the cocondensed material of (i) with a general phenol resin and (iii) a mixture of a phenol- formaldehyde condensed material with a melainne-formaldehyde condensed material, a material modified with, e.g. tung oil, etc.], (B) 10 to 50wt.% phosphate (e.g. triphenyl phosphate) and (C) 2 to 30wt.% ammonium phosphate (e.g. phosphoric acid-ammonium).