Reference

Polymerization of butadiyne: polymer characterization and properties

Polymerization of butadiyne: polymer characterization and properties. Snow, Arthur W. (Polym. Mater. Branch, Nav. Res. Lab., Washington, DC 20375, USA). Polym. Sci. Technol. (Plenum), 25(New Monomers Polym.), 399-414 (English) 1984. CODEN: POSTB5. ISSN: 0093-6286. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) Butadiyne (I) did not have a susceptibility to Ziegler-Natta polymn. as compared to acetylene. The vapor deposition polymn. of I on host polymers such as poly(vinylidene fluoride) (II) [24937-79-9], polyethylene (III) [9002-88-4], polytetrafluoroethylene (IV) [9002-84-0], and hexafluoropropylene-tetrafluoroethylene copolymer (V) [25067-11-2] involved condensation and permeation of the substrate prior to polymn. The order of polymn. reactivity was II > III > IV > V.In this experiment, several chemicals are used like 27987-87-7 and 9002-88-4 I polymer [27987-87-7] was characterized by IR, UV, and ESR as having a polyconjugated chain structure with pendant terminal acetylenic functional groups. I polymer had high thermal and chem. stability and could reinforce permeated substrate polymers. .

Oxygen-permselective membrane

Oxygen-permselective membrane. Takamura, Tsutomu; Imai, Atsuo; Suzuki, Nobukazu (Toshiba Corp., Japan). Eur. Pat. Appl. EP 97770 A2 11 Jan 1984, 41 pp. DESIGNATED STATES: R: CH, DE, FR, GB, LI, SE. (English). (European Patent Organization).Some commonly used reagents like 1305-78-8 and 26838-55-1 are used in this experiment. CODEN: EPXXDW. CLASS: IC: H01M004-86; G01N027-40; B01D013-04. ICA: B01D053-22. APPLICATION: EP 83-102715 18 Mar 1983. PRIORITY: JP 82-107631 24 Jun 1982; JP 82-156758 10 Sep 1982. DOCUMENT TYPE: Patent CA Section: 52 (Electrochemical, Radiational, and Thermal Energy Technology) Section cross-reference(s): 72 The title membrane, which can be effectively used in manufg. of an air electrode for a H-O fuel cell, a metal-air battery, or an O sensor, comprises a film of a water-containable or wettable metallic oxide. The membrane, though being very thin, does not allow water vapor and CO2 in air to permeate and has a great function for allowing O to selectively penetrate. Thus, FEP [25067-11-2] was sputtered on polycarbonate membranes to deposit a 0.2m water-repellent layer on either surface of each membrane. A 0.2m metallic (Sn, Zn, Al, Mg, Ca, Sr, Ba, Ti, or Si) oxide was deposited on the water-repellent layer on the membrane. The membranes were measured for O permeation rate (J in mL/s-cm2-torr), CO2 permeation rate (J'), and water vapor permeation rate (J''). The resp. J/J'' and J/J' were 7.1-7.5 and 2.1-2.5. .