Showing papers on "Triphenyl phosphate published in 1988"

Tricresyl phosphate and triphenyl phosphate are toxic to cultured human, monkey and dog cells.

Abstract: We report herein evidence that the flame retardants tricresyl phosphate and triphenyl phosphate are toxic to KB, HEL-R66, Vero and MDCK cells grown in culture. The former is more toxic than the latter.

Stability of Processed Cellulose Ester Photographic Films

Abstract: The chemical stability of cellulose ester photographic film support is extremely important to archival keeping behavior. A 1981 study predicted that cellulose triacetate support films would have acceptable physical properties for at least 300 years under recommended storage conditions. This study on the total film, however, masked some of the degradation reactions resulting from the amphoteric nature of the gelatin emulsions. The effects of commonly used cellulose nitrate subbing material and triphenyl phosphate flame-retardant plasticizer on nonsensitized cellulose triacetate supports are now reported. These nonsensitized supports, after high-temperature incubations, follow a similar Arrhenius relationship, indicating that the presence of the sub and the plasticizer, at the concentrations commonly used with Kodak cellulose ester films, does not affect their archival keeping behavior. Recommendations for proper storage to prolong the useful life of these processed films are outlined.

Flame-retarding polyphenylene ether resin composition

Abstract: PURPOSE: To obtain a resin composition excellent in flame retardancy, impact resistance and thermal aging resistance by mixing a polyphenylene ether resin with an aromatic alkenyl resin, a modified polyorganosiloxane polymer, a phosphoric ester compound and particulate silicic acid. CONSTITUTION: The title composition is produced by mixing a polyphenylene ether resin [e.g., poly(2,6-dimethyl-1,4-phenylene)ether] with an aromatic alkenyl resin (e.g., PS), a modified polyorganosiloxane polymer of a mean particle diameter of 0.08-0.6μm (e.g., vinyl monomer-grafted polyorganosiloxane rubber), a phosphoric ester (e.g., triphenyl phosphate) and particulate silicic acid. This composition is excellent in flame retardancy, impact resistance and thermal aging resistance. COPYRIGHT: (C)1990,JPO&Japio

Reactions of triphenyl phosphite with di- and tribromoacetaldehydes

Abstract: The reaction of triphenyl phosphite and di- and tribromoacetaldehydes proceeds through initial halophilic attack with subsequent formation of triphenyl phosphate and tetraphenylphosphonium bromide.