Reference

Flotation agent for treatment of coal and minerals

Flotation agent for treatment of coal and minerals. Mistrik, Edmund; Hrebacka, Jaroslav (Czech. ). Czech. CS 205769 B 1 Sep 1983,4 pp. (Slovak). (Czechoslovakia). CODEN: CZXXA9. CLASS: IC: B03D001-06. APPLICATION: CS 78-7387 13 Nov 1978. DOCUMENT TYPE: Patent CA Section: 54 (Extractive Metallurgy) Section cross-reference(s): 51 The flotation agent consists of a mixt. 5650-20-4 and 111-46-6 which are cas registry numbers of chemicals are mentioned. of high-boiling by-products from the catalytic ethoxylation of BuOH and EtOH. It contains varying amts. of triethylene glycol monobutyl ether [143-22-6], higher polyethylene glycol Bu ethers, tetraglycol and pentaglycol Et ethers, glycol, diglycol, triglycol, and water. It may be mixed with gas oil. .

Separation of aromatic and nonaromatic components in mixed hydrocarbon feeds

Separation of aromatic and nonaromatic components in mixed hydrocarbon feeds. Forte, Paulino (Union Carbide Corp. , USA). U.S. US 4498980 A 12 Feb 1985, 13 pp. (English). (United States of America). CODEN: USXXAM. CLASS: ICM: C10G021-16. NCL: 208321000. APPLICATION: US 83-465914 14 Feb 1983. DOCUMENT TYPE: Patent CA Section: 51 (Fossil Fuels, Derivatives, and Related Products) Arom. hydrocarbons are sepd. from hydrocarbon feeds by an extn. process with mixed solvents and cosolvents. The solvents used are diethylene glycol [111-46-6], triethylene glycol [112-27-6], tetraethylene glycol [112-60-7], or mixts. The cosolvents are triethylene glycol Me ether [112-35-6], triethylene glycol Et ether [112-50-5], triethylene glycol Bu ether [143-22-6], tetramethylene glycol Me ether [23783-42-8], tetraethylene glycol Et ether [5650-20-4], or mixts.