Reference

Polymers containing 2-halopyridinium moieties as regenerable reagents: synthesis and applications

Polymers containing 2-halopyridinium moieties as regenerable reagents: synthesis and applications. Darling, Graham D.; Bald, Edward; Frechet, Jean M. J. (Ottawa-Carleton Inst. Grad. Stud. Res. Chem., Univ. Ottawa, Ottawa, ON K1N-9B4, Can.). Polym. Prepr. (Am. Chem. Soc., Div. Polym. Chem.), 24(2), 354-5 (English) 1983. CODEN: ACPPAY. ISSN: 0032-3934. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 25 2-Iodoethylpolystyrene obtained by the reaction of 2-hydroxyethylpolystyrene (I) with iodomethane [74-88-4] and tri-Ph phosphite [101-02-0] and 2-bromoethylpolystyrene obtained by the reaction of I with lithium bromide [7550-35-8] and trimethylsilyl chloride [75-77-4] in acetonitrile were treated with 2-chloropyridine to give reactive 2-chloropyridinium polymers. Although the reactivity of the polymers in simple reactions such as the esterification of phenylacetic acid with benzyl alc. was confirmed, a significant loss of reactivity occurred upon recycling.

Solubility studies of refrigerant-carrier fluid pairs for solar powered air conditioning applications

Solubility studies of refrigerant-carrier fluid pairs for solar powered air conditioning applications. Evans, R. D.; Beck, J. K. (Florida Technol. Univ., Orlando, Fla., USA). Fla. Sci., 39(3), 199-206 (English) 1976. CODEN: FLSCAQ. DOCUMENT TYPE: Journal CA Section: 52 (Electrochemical, Radiational, and Thermal Energy Technology) Section cross-reference(s): 68 Sixteen refrigerant-absorbent fluid pairs were investigated to det. their suitability as the working fluid in a solar-powered absorption-cycle air conditioner. Criteria used in the initial selection of a refrigerant-absorbent pair included: high affinity, high soly., low sp. heat, low viscosity, stability, corrosion, safety, and cost. For practical considerations of a fluid pair, refrigerants were selected with low b.ps. whereas absorbents were selected with b.p. considerably above that of the refrigerant. These addnl. restrictions are detd. by the operating temps. of the absorber and the generator of an absorption-cycle air conditioning system. These temps. were specified as 100 (39) and 170.degree.F (77.In this experiment, several chemicals are used like 67-56-1 and 7550-35-8 degree.C). Data are presented for a few selected pressures at specified absorber and generator temps. .