Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1974-11-19
1977-03-15
Levine, Herbert
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260641, C07C 1108
Patent
active
040124568
ABSTRACT:
The method for separation of isobutylene from hydrocarbon fractions containing four carbon atoms consists in processing said hydrocarbon fractions with water at a temperature of 70.degree.-110.degree. C and a pressure of 16 - 23 atmospheres, at a molar ratio of the said hydrocarbon fractions to water of 1:5-20, in the presence of a polar solvent taken in the quantity of 10-70 per cent of the weight of water, and also in the presence of a catalyst. The resultant reaction mixture contains tertiary butyl alcohol and water. Tertiary butyl alcohol is isolated from the reaction mixture as its aqueous solution and is dehydrated at a temperature of 80.degree.-110.degree. C and a pressure not above 3 atm, in the presence of the same catalyst. The catalyst, that is used at the stage of processing the hydrocarbon fractions with water, and also at the step of dehydration of tertiary butyl alcohol, is a moulded ion-exchange catalyst consisting of a sulphonated copolymer of styrene with divinylbenzene or diisopropenylbenzene, and a sulphonated thermoplastic material, for example, sulfonated-polyethylene, -polypropylene and -polyvinyl chloride, taken in the weight ratio of 1-4:1-2, of sulfonated styrene-dialkenylbenzene copolymer:sulfonated thermoplastic material, respectively.
REFERENCES:
patent: 2891999 (1959-06-01), Langer
patent: 3256250 (1966-06-01), Frilette
patent: 3328471 (1967-06-01), Kronig
patent: 3397250 (1968-08-01), Nambu
patent: 3527829 (1970-09-01), Horie et al.
patent: 3823198 (1974-07-01), Goldsby
patent: 3864419 (1975-02-01), Murphy
Product Research and Development "Direct Hydration of Propylene over Ion-Exchange Resin," Kaises et al., vol. 1, Dec. 1962.
LandOfFree
Method for separation of isobutylene from C.sub.4 hydrocarbon fr does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for separation of isobutylene from C.sub.4 hydrocarbon fr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for separation of isobutylene from C.sub.4 hydrocarbon fr will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-425800