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公开(公告)号：DE59209181D1
公开(公告)日：1998-03-12
申请号：DE59209181
申请日：1992-11-30
Applicant: BASF AG
Inventor： HOESSEL PETER DR , HOFFMANN GERHARD DR , LANGEN JUERGEN DR , REINECKE HOLGER DR
Abstract: The invention relates to a process for the production of microstructure elements having structure depths of from several mu m into the mm region by imagewise irradiation of polymers with x-rays, where the polymers employed are aliphatic polyesters.
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公开(公告)号：AT163096T
公开(公告)日：1998-02-15
申请号：AT92120404
申请日：1992-11-30
Applicant: BASF AG
Inventor： HOESSEL PETER DR , HOFFMANN GERHARD DR , LANGEN JUERGEN DR , REINECKE HOLGER DR
Abstract: The invention relates to a process for the production of microstructure elements having structure depths of from several mu m into the mm region by imagewise irradiation of polymers with x-rays, where the polymers employed are aliphatic polyesters.
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公开(公告)号：DE59010255D1
公开(公告)日：1996-05-09
申请号：DE59010255
申请日：1990-10-04
Applicant: BASF AG
Inventor： BRONSTERT KLAUS DR , HOFFMANN GERHARD DR , KURTZ KARL-RUDOLF DR
IPC: C08F2/50 , C08F287/00 , G03F7/033
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公开(公告)号：DE4409306A1
公开(公告)日：1995-09-21
申请号：DE4409306
申请日：1994-03-18
Applicant: BASF AG
Inventor： KELLER HARALD DR , HOFFMANN GERHARD DR , DENZINGER WALTER , FAESSLER RAINER DR
IPC: B05D3/10 , B05D7/14 , C08L39/00 , C09D139/00 , C25D13/20
Abstract: Method of modifying cleaned or chemically pre-treated metal surfaces with aq. solns. of organic polymers contg. amino gps. In an example, a sample of Mn-modified, low Zn content, phosphatised steel that had been cleaned with water was immersed for 60s in a 0.1 wt.% aq. polyvinylamine soln. at 50 deg.C, then after drying in air the sample was immersed for 5s in deionised water and then after drying in air again the sample was cathodically electro-plated in a bath according to the comparative example in German patent application DE4208056-A2. The sample was plated at 320-380 V to give a 23 micron thick coating, and then fired for 25 mins. at 165 deg.C. A 0.1 mm wide incision was made in the lacquered sample, extending down to the metal surface and the sample was sprayed for 15 days with aq. NaCl soln. (5 wt.%) at 40 deg.C (salt water spray test), whilst another sample was immersed for 10 days in an aq. NaCl soln. (5 wt.%) warmed to 55 deg.C (salt water soak test). No rust was observed for the soak test, whilst only a slight amt. of rust was observed for the spray test.
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公开(公告)号：DE4324079A1
公开(公告)日：1995-01-26
申请号：DE4324079
申请日：1993-07-19
Applicant: BASF AG
Inventor： HAEUSSLING LUKAS DR , HOFFMANN GERHARD DR , HARTH KLAUS DR , HIBST HARTMUT DR
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Patent Agency Ranking
公开(公告)号：DE4230951A1
公开(公告)日：1994-03-17
申请号：DE4230951
申请日：1992-09-16
Applicant: BASF AG
Inventor： HOESSEL PETER DR , HOFFMANN GERHARD DR , BRAUN FRANK
IPC: C07D319/12 , A61C17/00 , C08G63/08
Abstract: Process for the prepn. of a glycolide of formula (Ia) or lactides of formula (Ib) by heat-catalysed fission of condensation prods. of glycolic or alpha-hydroxypropionic acid whilst distilling off (Ia) or (Ib) from the reaction mixt., then converting the distillate into a solid phase and then washing the obtd. crude prod. with diethylether. USE/ADVANTAGE - (Ia) and (Ib) are starting materials for high mol. wt. polyglycolides or polylactides, useful as resorbable surgical stitching material. Use of diethylether to wash the crude prod. avoids the need for repeated crystallisation necessary for prior art solvents such as isopropanol, tert. amyl alcohol, carbon tetrachloride and ethyl acetate.
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公开(公告)号：DE58904058D1
公开(公告)日：1993-05-19
申请号：DE58904058
申请日：1989-07-01
Applicant: BASF AG
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公开(公告)号：DE4107662A1
公开(公告)日：1992-09-10
申请号：DE4107662
申请日：1991-03-09
Applicant: BASF AG
Inventor： HOESSEL PETER DR , HOFFMANN GERHARD DR , WUENSCH THOMAS DR , LANGEN JUERGEN DR
IPC: B29C35/08 , B29C39/00 , B29C43/00 , B29C45/00 , B29C47/00 , B29C59/16 , B29K23/00 , C08G75/22 , C08J7/00 , G03F7/039 , G03F7/20
Abstract: The invention relates to a process for the production of micromouldings having a high aspect ratio by imagewise irradiation of polymers with high-energy parallel radiation from X-ray sources, the polymers employed being copolymers of SO2 and one or more ethylenically unsaturated organic compounds.
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公开(公告)号：DE3769422D1
公开(公告)日：1991-05-23
申请号：DE3769422
申请日：1987-09-26
Applicant: BASF AG
Inventor： BOETTCHER ANDREAS DR , BRONSTERT BERND DR , HOFFMANN GERHARD DR
Abstract: Novel photopolymerizable recording materials, in particular for the production of printing plates and relief plates, can be developed with water or an aqueous alkaline solution and predominantly consist of a photoinitiator-containing mixture of (a) one or more low molecular weight compounds having one or more photopolymerizable olefinically unsaturated double bonds and (b) one or more organic polymeric binders and contain a bisacylphosphine oxide as the photoinitiator. These recording materials are useful for the production of printing plates and relief plates.
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公开(公告)号：DE3926708A1
公开(公告)日：1991-02-14
申请号：DE3926708
申请日：1989-08-12
Applicant: BASF AG
Inventor： SEITZ FRIEDRICH DR , HOFFMANN GERHARD DR , BAUER GERHARD DR
Abstract: These photopolymerizable laminating materials consist of at least one film-forming polymer as a binder, at least one organic compound which is compatible with the binder, has at least two double bonds capable of addition polymerization and may be partially replaced by an organic compound having only one double bond capable of addition polymerization, a photoinitiator or photoinitiator system and an adhesion promoter, with or without conventional additives and assistants, the adhesion promoter used being a tricyclic heteroaromatic compound which is soluble in aqueous alkaline solutions. The said laminating materials are suitable for the production of printed circuits.
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