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公开(公告)号:DE59304392D1
公开(公告)日:1996-12-12
申请号:DE59304392
申请日:1993-05-27
Applicant: HOECHST AG
Inventor: HOPP PETER DR , JANSEN ROLF-MICHAEL DR
IPC: C07C17/38 , C07C17/395 , C07C19/08 , C07C19/10
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公开(公告)号:DE59303102D1
公开(公告)日:1996-08-08
申请号:DE59303102
申请日:1993-03-26
Applicant: HOECHST AG
Inventor: JANSEN ROLF-MICHAEL DR , HUG SIEGISMUT DR , DEGER HANS-MATTHIAS DR
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公开(公告)号:DE4115025A1
公开(公告)日:1992-11-12
申请号:DE4115025
申请日:1991-05-08
Applicant: HOECHST AG
Inventor: HOPP PETER DR , JANSEN ROLF-MICHAEL DR
IPC: C07C17/38 , C07C17/395 , C07C19/08
Abstract: The invention relates to a process for the removal of olefinic impurities from 1,1,1,2,3,3,3-heptafluoropropane (R 227), by bringing the contaminated R 227 in contact with an alcohol and a base and distilling off the R 227 simultaneously or subsequently.
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公开(公告)号:DE4439217A1
公开(公告)日:1996-05-09
申请号:DE4439217
申请日:1994-11-03
Applicant: HOECHST AG
Inventor: JANSEN ROLF-MICHAEL DR , ZIMMERMANN ANDREAS DR
IPC: C01B33/154 , C01B33/16 , C04B30/00 , C01B33/14 , F16L59/00
Abstract: The invention concerns a process for preparing modified SiO2 gels, in which the gel is aged with a solution of an alkyl and/or arylorthosilicate capable of condensation or with an aqueous silicic acid solution in order to reinforce the network.
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公开(公告)号:AT144971T
公开(公告)日:1996-11-15
申请号:AT93108578
申请日:1993-05-27
Applicant: HOECHST AG
Inventor: HOPP PETER DR , JANSEN ROLF-MICHAEL DR
IPC: C07C17/38 , C07C17/395 , C07C19/08 , C07C19/10
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公开(公告)号:AT139903T
公开(公告)日:1996-07-15
申请号:AT93105013
申请日:1993-03-26
Applicant: HOECHST AG
Inventor: JANSEN ROLF-MICHAEL DR , HUG SIEGISMUT DR , DEGER HANS-MATTHIAS DR
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公开(公告)号:DE4342548A1
公开(公告)日:1995-06-22
申请号:DE4342548
申请日:1993-12-14
Applicant: HOECHST AG
IPC: C01B33/154 , C01B33/16 , C04B30/00 , C04B38/00 , C01B33/157 , F16L59/00
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公开(公告)号:DE4316540A1
公开(公告)日:1994-11-24
申请号:DE4316540
申请日:1993-05-18
Applicant: HOECHST AG
Inventor: JANSEN ROLF-MICHAEL DR , KESSLER BIRGIT , WONNER JOHANN DR , ZIMMERMANN ANDREAS DR
IPC: C08J9/28 , B01J13/00 , B01J21/08 , B01J32/00 , B01J37/03 , B01J37/34 , C01B33/158 , C01B33/16 , F26B3/34 , B29B13/06
Abstract: PCT No. PCT/EP94/01413 Sec. 371 Date Oct. 27, 1995 Sec. 102(e) Date Oct. 27, 1995 PCT Filed May 4, 1994 PCT Pub. No. WO94/26406 PCT Pub. Date Nov. 24, 1994Process for the preparation of aerogels by subcritical drying of inorganic and organic hydrogels and lyogels to give aerogels, dielectric drying methods being used.
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公开(公告)号:DE59207602D1
公开(公告)日:1997-01-16
申请号:DE59207602
申请日:1992-04-27
Applicant: HOECHST AG
Inventor: JANSEN ROLF-MICHAEL DR
IPC: B01J20/18 , C07B63/00 , C07C17/38 , C07C17/389 , C07C17/395 , C07C19/08 , C07C19/10
Abstract: The invention relates to a process for removing olefinic impurities from hydrogen-containing chlorofluorohydrocarbons (HCFCs) in which the contaminated HCFCs are passed in the gas phase at 200 DEG to 400 DEG C. over a zeolite.
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公开(公告)号:ES2079547T3
公开(公告)日:1996-01-16
申请号:ES91121928
申请日:1991-12-20
Applicant: HOECHST AG
Inventor: HOPP PETER DR , JANSEN ROLF-MICHAEL DR
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