Detail of "7000-29-5"

Reference

Alkali-aggregate reactions in mortars with andesitic and dolomitic granules

All Rights Reserved. Alkali-aggregate reactions in mortars with andesitic and dolomitic granules. Georgescu, Maria; Voicu, Georgeta; Stoleriu, Stefania; Poteras, George (Faculte de Chimie Industrielle, Universite ?Politehnica? de Bucarest, Rom.). Revue Roumaine de Chimie, Volume Date 2005, 50(11-12), 929-937 (French) 2006 Editura Academiei Romane. CODEN: RRCHAX. ISSN: 0035-3930. DOCUMENT TYPE: Journal CA Section: 58 (Cement, Concrete, and Related Building Materials) The alkali-aggregate reactions accompanied by expansion represent an important factor for the durability of concrete. To develop such reactions, the existence of some factors such as the presence of some reactive compds. in the aggregate, certain content of alkali in the liq. phase of the concrete and the presence of the humid environment, is necessary. Because this latter factor is very important for the expansion by alkali-aggregate reactions, with a neg. influence on the concrete durability, the potential of the reactivity must be controlled esp. for the aggregate destined for hydrotech. concrete. Depending on the aggregate nature, the alkali-aggregate reactions can be: alkali-silica reactions, alkali-silicate reactions and alkali-carbonate reactions. We bring information about the alkali-silica reaction and alkali-carbonate reaction, in mortars prepd. with andesitic aggregate and dolomitic aggregate, resp. The investigations were made using mortars resulted from bars used for expansion detns., after 12 mo and 18 mo, resp. For these investigations, methods such as: x-ray diffraction, thermo-gravimetric anal. and electro-microscopic anal., were used.Except for chemicals metioned above, 7000-29-5 and 16389-88-1 are also used. .

Impact promoters for mineral-filled polyethyelene or ethylene-vinyl acetate copolymers

Impact promoters for mineral-filled polyethyelene or ethylene-vinyl acetate copolymers. Ancker, Fred Harpoth; Ashcraft, Arnold Clifton, Jr. (Union Carbide Corp., USA). Eur. Pat. Appl. EP 209085 A2 21 Jan 1987, 15 pp. DESIGNATED STATES: R: AT, BE, CH, DE, FR, GB, IT, LI, LU, NL, SE. (European Patent Organization) CODEN: EPXXDW.Some commonly used reagents like 7000-29-5 and 9002-88-4 are used in this experiment. CLASS: ICM: C08K013-02. ICS: C08L023-06; C08L031-04. ICI: C08K013-02, C08K003-22, C08K005-52; C08K013-02, C08K003-26, C08K005-09, C08K005-34; C08K013-02, C08K003-24, C08K005-09. APPLICATION: EP 86-109459 10 Jul 1986. PRIORITY: US 85-753976 11 Jul 1985. DOCUMENT TYPE: Patent CA Section: 37 (Plastics Manufacture and Processing) Tris(2-ethylhexyl) phosphate, isostearic acid, or dodecylpyridinium salts are useful as impact promoters for the title polymers filled with Al(OH)3, Mg(OH)2, CaCO3, CaCO3-MgCO3 mixts., BaTiO3 or NdTiO3, and organosilicon- or organofluorine-contg. hydrophobic agents are useful for improving the resistance of the filled polymers to water. Polyethylene (d. 0.959 g/cm3, melt index 0.7 g/cm3) contg. 50% Al(OH)3 treated with tris(2-ethylhexyl) phosphate exhibited notched Izod impact strength 9.4 ft-lbs/in., compared with 2.0, 0.8, 2.9, or 3.7, for polyethylene contg. untreated Al(OH)3, or Al(OH)3 treated with iso-Pr triisostearyl titanate, Ca stearate, or ethoxylated poly(dimethylsiloxane), resp. .