公开(公告)号：US3657374A

公开(公告)日：1972-04-18

申请号：US3657374D

申请日：1970-02-26

Applicant: BASF AG

Inventor： SCHLOEMER KARL ,  NAGEL OTTO ,  PLATZ ROLF ,  MARTIN HANS

IPC: C07C7/148 ,  C07C7/171 ,  C07C11/24

CPC classification number: C07C7/14866 ,  C07C7/171 ,  Y10S585/934 ,  C07C11/09

Abstract: RECOVERY OF ISOBUTYLENE FROM MIXTURES OF C4-HYDROCARBONS BY ABSORPTION IN A MIXTURE OF TERT-BUTANOL, SULFURIC ACID AND WATER, RECOVERY OF TERT-BUTANOL BY HEATING THE AQUEOUS SOLUTION OF TERT-BUTANOL IN SULFURIC ACID AS AN AZEOTROPE WITH 12% WATER, FRACTIONATION OF THE SAID AZEOTROPE AND DECOMPOSITION OF THE TERT-BUTANOL BY PASSING IT OVER ALUMINA AT ABOUT 300*C.

公开(公告)号：US3622648A

公开(公告)日：1971-11-23

申请号：US3622648D

申请日：1968-05-17

Applicant: BASF AG

Inventor： SCHLOEMER KARL ,  KROEPER HUGO ,  WEITZ HANS-MARTIN

IPC: C07C2/32 ,  C07C3/20

CPC classification number: C07C2/32 ,  C07C2523/04 ,  C07C2531/22 ,  C07C2531/26

Abstract: An improved process for the dimerization of olefins in the presence of alkali metal catalysts at 60* to 200* C. and at atmospheric pressure up to 300 atmospheres, catalysts being used which have been derived from an alkali metal and an organic compound containing one or more than one carbonyl group. The process is particularly suitable for effective and selective dimerization of propylene to 4-methylpentene-1. Some of the dimers obtained are suitable as antiknock additives and for the production of polymers.