公开(公告)号：DE3682923D1

公开(公告)日：1992-01-30

申请号：DE3682923

申请日：1986-03-08

Applicant: BASF AG

Inventor： BRONSTERT KLAUS DR ,  HOCHSTEIN WALDHELM DR ,  MOHR HEINRICH DR ,  SANDROCK GERHARD DR ,  VOGEL HANS-HENNING DR ,  RATH HANS PETER DR

IPC: C08F4/00 ,  C08F4/14 ,  C08F10/10

Abstract: Isobutylene homo- and copolymers with olefinically unsatd. monomers are produced by polymsn. in liq. phase in a polymsn. zone at a pressure of 0.2-20 bar and at -130 to 60 deg.C, in the presence of (i) 0.01-20m Mole (on monomer) of a boron halide catalyst; (ii) a cocatalyst and opt. a polymsn. accelerator in a molar ratio of 0.5 boron halide:200 cocatalyst and opt. polymerisation accelerator; (iii) 0-90 wt.% inert solvent, and removing heat of polymsn. by cooling. The new feature is the use of a carboxylic acid anhydride or halide as the cocatalyst. Pref. the cocatalyst is a 4-18C aliphatic or aromatic opt. halogen substd. anhydride or a 2-12C carbonyl halide. Esp. trifluoroacetic, trichloroacetic, benzoic, phthalic, succinic, pivalic, maleic or (meth)acrylic anhydrides; acetyl fluoride, acetyl chloride, acetyl bromide, benzoyl chloride pivaloyl chloride or acryloyl chloride are claimed as co-catalyst.

公开(公告)号：DE3509272A1

公开(公告)日：1986-09-18

申请号：DE3509272

申请日：1985-03-15

Applicant: BASF AG

Inventor： BRONSTERT KLAUS DR ,  HOCHSTEIN WALDHELM DR ,  MOHR HEINRICH DR ,  SANDROCK GERHARD DR ,  VOGEL HANS-HENNING DR ,  RATH HANS PETER DR

IPC: C08F4/00 ,  C08F4/14 ,  C08F10/10

Abstract: Isobutylene polymers are prepared by polymerizing the monomers at from 0.2 to 20 bar and from -130 DEG and +60 DEG C. in the presence of from 0.01 to 20 mmol of a boron halide catalyst system which contains as cocatalyst a carboxylic anhydride or carbonyl halide, preferably an aliphatic or aromatic, unsubstituted or halogen-substituted C4-C18-carboxylic anhydride of C2-C12-carbonyl halide and where appropriate also a customary polymerization accelerant in customary amounts, in the presence or absence of an inert solvent with dissipation of the heat of reaction.

公开(公告)号：DE3346695A1

公开(公告)日：1985-07-04

申请号：DE3346695

申请日：1983-12-23

Applicant: BASF AG

Inventor： LINDNER ALFRED DR ,  VOLKAMER KLAUS DR ,  HOFFMANN HERWIG DR ,  SANDROCK GERHARD DR

IPC: C07C1/00 ,  C07C7/04 ,  C07C7/08 ,  C07C9/10 ,  C07C11/08 ,  C07C67/00

公开(公告)号：DE2962305D1

公开(公告)日：1982-04-29

申请号：DE2962305

申请日：1979-01-15

Applicant: BASF AG

Inventor： BRUNNER ERWIN DR ,  SCHUBERT ECKART DR ,  LINDNER ALFRED DR ,  MERGER FRANZ DR ,  VOLKAMER KLAUS DR ,  STROHMEYER MAX DR ,  SANDROCK GERHARD DR

IPC: B01J31/00 ,  C07B61/00 ,  C07C1/00 ,  C07C7/148 ,  C07C11/09 ,  C07C41/36 ,  C07C41/42 ,  C07C67/00

Abstract: A process for obtaining isobutene from a C4-hydrocarbon mixture containing isobutene, by reacting the mixture with a primary alcohol in the presence of an acid condensing agent and decomposing the resulting tertiary ether in the presence of an acid catalyst at an elevated temperature, wherein a primary C3- or C4-alcohol is used.