-
公开(公告)号：DE2819593A1
公开(公告)日：1979-11-08
申请号：DE2819593
申请日：1978-05-05
Applicant: BASF AG
Inventor： HERRMANN GUENTER DIPL ING DR , FROMMER ELMAR DIPL CHEM DR , PAETSCH JUERGEN DIPL CHEM DR , REISS WOLFGANG DIPL CHEM DR , WINDERL SIEGFRIED DIPL CHEM DR
IPC: C07C29/149 , C07C31/20 , C07C29/00
Abstract: H3PO4 or a phosphate ester is added to 6 C mono- and/or dicarboxylic acids, esp. the acid mixts. obtd. as by-prods. in cyclohexane oxidn. to cyclohexanone, before their hydrogenation to 6 C alpha, omega-diols. Phosphoric acid or phosphate quantity added may be 10-100 ppm. w.r.t. aq. solns. The phosphates may be derived from 1-20 C alcohols. The formation of residues, i.e. 'cork' formation, causing clogging of plant, is prevented.
-
公开(公告)号：DE2459163A1
公开(公告)日：1976-06-24
申请号：DE2459163
申请日：1974-12-14
Applicant: BASF AG
Inventor： HUCHLER OTTO HERMANN DIPL CHEM , WINDERL SIEGFRIED DIPL CHEM DR , MUELLER HERBERT DIPL CHEM DR , HOFFMANN HERWIG DIPL CHEM DR
IPC: C08G65/20
Abstract: FeCl3-catalysed tetrahydrofuran polymsn. takes place in the presence of a carboxylic acid anhydride, acting as promoter, pref. at 0-70 (esp. 20-65) degrees C. terahydrofuran polymers can be converted to alpha, omega-polytetramethylene ether glycols. Process is non-polluting, cheap, sufficiently variable to allow formation of polymers having mol. wt. 500-3000. Polymer mol. wt. is inversely proportional to anhydride concn.
-
3.发明专利
公开(公告)号：DE2930144A1
公开(公告)日：1981-02-19
申请号：DE2930144
申请日：1979-07-25
Applicant: BASF AG
Inventor： MUELLER HERBERT , HOFFMANN HERWIG DIPL CHEM DR , WINDERL SIEGFRIED DIPL CHEM DR , HUCHLER OTTO HERMANN DIPL CHEM
IPC: B01J21/04 , C07B61/00 , C07D307/06 , C07D307/08 , C07D309/04 , C07D313/04 , C07D305/06
Abstract: Prodn. of cyclic ethers (I) comprises liq. phase dehydration of alpha, omega-diols (II) in presence of alumina suspended in the reaction mixt. The alumina is prepd. by pptn. of an alkali aluminate soln. with acid, then heating at 300-1000 deg. C. The method is used to prepare ethers (I) (A is 4-8C alkylene, opt. interrupted by heteroatoms) e.g. 1,4-dioxan from diethylene glycol or 2,5-dihydrofuran from cis-buten-2- diol-1,4. The catalyst gives almost quantitative yields and works effectively even with relatively impure diols. Catalyst consumption is low; it is not corrosive so relatively inexpensive materials can be used for the reactors, and the reaction rate is high e.g. at 210 deg. C 1-3 pts. THF per hr. per pt. catalyst.
-
公开(公告)号：DE2536273A1
公开(公告)日：1977-02-24
申请号：DE2536273
申请日：1975-08-14
Applicant: BASF AG
Inventor： VOGES DIETER DIPL CHEM DR , BAER KARL DIPL CHEM DR , BOUDIER JUERGEN DIPL CHEM DR , WINDERL SIEGFRIED DIPL CHEM DR , HOFFMANN HERWIG DIPL CHEM DR
IPC: B01J23/88 , C07B61/00 , C07C27/00 , C07C29/17 , C07C31/02 , C07C67/00 , C07C209/00 , C07C209/70 , C07C213/00 , C07C213/08 , C07C215/08 , C07C29/00
Abstract: An improved catalyst for the complete hydrogenation of acetylenically unsaturated alcohols and based on nickel, copper and manganese. The catalyst is used without a support and molybdenum is additionally included in an amount approximately equal to the content of manganese.
-
公开(公告)号：DE2445961A1
公开(公告)日：1976-04-08
申请号：DE2445961
申请日：1974-09-26
Applicant: BASF AG
Inventor： HUCHLER OTTO HERMANN DIPL CHEM , MESCH WALTER DIPL CHEM DR , WINDERL SIEGFRIED DIPL CHEM DR , MUELLER HERBERT DIPL CHEM DR , HOFFMANN HERWIG DIPL CHEM DR
IPC: C08G65/20 , C08G65/30 , C08G65/324 , C08G65/332
-
Patent Agency Ranking
公开(公告)号：DE2624286A1
公开(公告)日：1977-12-22
申请号：DE2624286
申请日：1976-05-31
Applicant: BASF AG
Inventor： MUELLER HERBERT DIPL CHEM DR , HOFFMANN HERWIG DIPL CHEM DR , WINDERL SIEGFRIED DIPL CHEM DR , HUCHLER OTTO HERMANN DIPL CHEM
IPC: C08G65/20
Abstract: Tetrahydrofuran (I) is polymerised using SbCl5 as catalyst in presence of >=1 carboxylic acid or anhydride in which the SbCl5 is pref. dissolved, allowing a reduction in catalyst concn. The catalyst also contains an alcohol as activator. Catalyst activity is substantially increased, the polymerisation rate and output being approx. doubled.
-
公开(公告)号：DE2514990A1
公开(公告)日：1976-10-14
申请号：DE2514990
申请日：1975-04-05
Applicant: BASF AG
Inventor： REISS WOLFGANG DIPL CHEM DR , WINDERL SIEGFRIED DIPL CHEM DR , SCHROEDER WOLFGANG DIPL CHEM D , HOFFMANN HERWIG DIPL CHEM DR
Abstract: In a process for the manufacture of butynediol by the reaction of formaldehyde and acetylene in aqueous solution, in which a catalyst is used which is produced by the action of acetylene and formaldehyde on copper (II) compounds, the catalyst becomes inactive when it is treated for a relatively long period with formaldehyde at elevated temperature in the absence of acetylene so that it must constantly remain in contact with acetylene-containing solution if its temperature is above 70 DEG C.
-
公开(公告)号：DE2503750A1
公开(公告)日：1976-08-05
申请号：DE2503750
申请日：1975-01-30
Applicant: BASF AG
Inventor： HUCHLER OTTO HERMANN LIMBURGER , WINDERL SIEGFRIED DIPL CHEM DR , MUELLER HERBERT DIPL CHEM DR , HOFFMANN HERWIG DIPL CHEM DR
IPC: C07D307/06 , C07D307/08 , C07D307/28 , C07D309/04
Abstract: Process for prodn. of cyclic ethers from alpha,omega-diols or mono- or diesters of these made by treatment with an acid, comprises treating the alpha,omega-diol (ester) which is capable of forming a cyclic ehter by splitting off water on an acid, with (a) a dil, hydrogen halide acid or an aq. acid with a dissociation constant in water of >=1.10-6, or with a cpd. which forms such acids in aq. soln., and (b) a salt, whereby either (a) and/or (b) gives halide anions. Simple process giving high yields of cyclic ether with min. by-prod. formation. In a typical process, butanediol-1, 4 is converted into tetrahydrofuran.
-
-
-
-
-
-
-
Search Results
21
records
(took 0.023 seconds)
