Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2357856A
Inventor
Helmuth Gustav Schneider
William Coyle Van Siclen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ExxonMobil Technology and Engineering Co
Original Assignee
Exxon Research and Engineering Co
Esso Research and Engineering Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Exxon Research and Engineering Co, Esso Research and Engineering CofiledCriticalExxon Research and Engineering Co
Priority to GB2357856ApriorityCriticalpatent/GB794873A/en
Publication of GB794873ApublicationCriticalpatent/GB794873A/en
B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
B01J27/06—Halogens; Compounds thereof
Abstract
In iso-olefine polymerization processes using Friedel-Crafts catalysts in which the polymer and catalyst are contacted with aqueous sodium hydroxide and allowed to stand at a temperature of 20 DEG to 65 DEG C. to form two layers to destroy and remove the catalyst into the aqueous layer, the aqueous sodium hydroxide is used in an amount to produce a mol. ratio of caustic soda to total catalyst of from 3.5 to 1 to 6 to 1. In examples, polyisobutylene, produced as a slurry in hexane, using an aluminium chloride catalyst, is allowed to contact the sodium hydroxide solution preferably at 50 DEG to 65 DEG C., and settled into two layers, the pH of the aqueous layer being maintained between 9.5 and 12.5. Lubricating oil may be added before separation to yield an oil-polymer solution.
GB2357856A1956-07-311956-07-31Neutralization of friedel-crafts catalyst
ExpiredGB794873A
(en)
Process for the production of synthetic lubricating oils by polymerization of alpha-olefins, catalytic cracking, vacuum distillation and hydrogenation.