C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
252/30, 53/369,
C07C 53/122 (2006.01) C07C 51/353 (2006.01) C07C 53/128 (2006.01)
Patent
CA 1070289
Abstract of the Disclosure Mixtures of poly-branched monocarboxylic acids of the formula: H(?HCH2)nCR1R2COOH, wherein R is methyl or ethyl; R1 is methyl, ethyl, propyl or butyl; R2 is methyl, propyl, butyl, hexyl or octyl; n = 1-5; at the following weight pro- portions of the acids: Image A process for preparing a mixture of poly-branched mono- carboxylic acids resides in reaction of a carboxylic acid of the formula R1R2CHCOOH, wherein R1 is methyl, ethyl, propyl or butyl; R2 is hydrogen or methyl, with alpha-olefins of the formula RCH=CH2, wherein R is methyl or ethyl, at a molar ra- tio of said carboxylic acid: alpha-olefin equal to 1:0.3-1.5 respectively at a temperature within the range of from 50 to 180°C in the presence of a peroxide intitiator taken in an amount of from 1 to 5% by weight of the starting carboxylic acid to form a reaction mixture containing the desired pro- duct, followed by separation of the latter from said reaction mixture. The mixture of acids according to the present invention are highly-efficient extraction agents in hydrometallurgy.They are also valuable components for the preparation of paint compositions. The process for preparation of said mixtures is one-staged and technologically simple. This process in- volves no production wastes or waste waters.
252178
Freidlina Rakhil K.
Mikhailov Vladimir M.
Povolotsky Dmitry I.
Terentiev Alexandr B.
Institut Elementoorganicheskikh Soedineny Akademii Nauk Sssr
Na
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