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公开(公告)号：DE2965043D1
公开(公告)日：1983-04-21
申请号：DE2965043
申请日：1979-10-18
Applicant: BASF AG
Abstract: A photopolymerizable composition for the production of water-developable printing plates and relief plates, based on a water-soluble or water-dispersible mixture, containing a photoinitiator, of (a) one or more water-soluble or water-dispersible polymers containing copolymerized N-vinylpyrrolidone units and/or one or more polymers containing vinyl alcohol units and (b) one or more olefinically unsaturated photopolymerizable monomers, which comprises, as an additive or as the sole polymer, a water-soluble modified vinyl alcohol polymer which contains from 5 to 75, especially from 10 to 60, % by weight of chemically bonded oxyethylene units. These modified vinyl alcohol polymers are in particular oxyethylated polyvinyl alcohol or hydrolyzed graft polymers of vinyl esters onto polyethylene glycols. The compositions are easier to process into printing plates and relief plates, and exhibit a long shelf life.
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公开(公告)号：DE3144905A1
公开(公告)日：1983-05-19
申请号：DE3144905
申请日：1981-11-12
Applicant: BASF AG
Inventor： LYNCH JOHN DIPL CHEM DR , NAARMANN HERBERT DIPL CHEM DR , SCHULZ GUENTHER DIPL CHEM DR , VYVIAL RUDOLF DIPL ING , WALLBILLICH GUENTER DIPL CHEM , ZUERGER MANFRED ING GRAD
IPC: G03F7/09 , C08F8/14 , G03F7/00 , G03F7/027 , G03F7/032 , G03F7/033 , G03F7/038 , G03C1/68 , G03F7/10
Abstract: Photosensitive recording materials which are suitable for the production of printing plates and relief plates and possess a photopolymerizable relief-forming layer which can be developed with water and is based on a polyvinylalcohol/monomer mixture contain, as a binder in the said layer, a polyvinylalcohol derivative which is obtained by reacting polyvinylalcohol with an acylating agent which has groups which are polymerizable by free radicals, the reaction being carried out in the heterogeneous phase, in an aprotic dispersant, using the acylating agent in an amount which corresponds to not less than twice the molar amount required to achieve the desired degree of acylation.
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Patent Agency Ranking
公开(公告)号：DE2913178A1
公开(公告)日：1980-10-23
申请号：DE2913178
申请日：1979-04-02
Applicant: BASF AG
Inventor： MOHR HEINZ , HOFFMANN WALTER DIPL ING , VYVIAL RUDOLF DIPL ING
Abstract: A process for underlaying flat-bed steel rule dies prior to producing sheet-like geometrical cut blanks, preferably from multi-blank sheets, in which varying tolerances, in the punching and cutting direction, of the steel rule cutters held in a rigid plate are compensated by a sheet, corresponding to the area of the sheet being cut, placed on the back of the steel rule cutter plate and consisting of a flowable hardenable plastic, the upper and lower platen being moved together so as to close the die and the sheet of plastic, bearing the relief formed thereon, then being solidified by an after-treatment.
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公开(公告)号：DE2909992A1
公开(公告)日：1980-10-02
申请号：DE2909992
申请日：1979-03-14
Applicant: BASF AG
Inventor： LECHTKEN PETER DIPL CHEM DR , BRONSTERT BERND DIPL CHEM DR , HOFFMANN GERHARD DIPL CHEM DR , VYVIAL RUDOLF DIPL ING , LYNCH JOHN DIPL CHEM DR
IPC: C07F9/32 , C07F9/40 , C07F9/46 , C07F9/48 , C07F9/53 , C08F2/48 , C08F2/50 , C08F283/00 , C08F291/18 , G03F7/029 , G03C1/68
Abstract: A photopolymerizable recording composition which comprises a mixture, containing a photoinitiator, of (a) a photopolymerizable olefinically unsaturated monomer and (b) an organic polymeric binder, wherein the photoinitiator is an acylphosphine oxide compound of the formula R1R2PO-CO-R3, where R1 and R2 are certain organic radicals and R3 is tert.-alkyl or a cyclic radical with two substituents in the ortho-position to the carbonyl group. The recording compositions have a high reactivity when irradiated with UV light and are used in particular for the preparation of printing plates, relief plates and photo-resists.
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公开(公告)号：DE2846647A1
公开(公告)日：1980-05-08
申请号：DE2846647
申请日：1978-10-26
Applicant: BASF AG
Abstract: A photopolymerizable composition for the production of water-developable printing plates and relief plates, based on a water-soluble or water-dispersible mixture, containing a photoinitiator, of (a) one or more water-soluble or water-dispersible polymers containing copolymerized N-vinylpyrrolidone units and/or one or more polymers containing vinyl alcohol units and (b) one or more olefinically unsaturated photopolymerizable monomers, which comprises, as an additive or as the sole polymer, a water-soluble modified vinyl alcohol polymer which contains from 5 to 75, especially from 10 to 60, % by weight of chemically bonded oxyethylene units. These modified vinyl alcohol polymers are in particular oxyethylated polyvinyl alcohol or hydrolyzed graft polymers of vinyl esters onto polyethylene glycols. The compositions are easier to process into printing plates and relief plates, and exhibit a long shelf life.
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公开(公告)号：DE2965566D1
公开(公告)日：1983-07-07
申请号：DE2965566
申请日：1979-07-09
Applicant: BASF AG
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公开(公告)号：DE3226779A1
公开(公告)日：1983-02-10
申请号：DE3226779
申请日：1982-07-17
Applicant: BASF AG
Inventor： LYNCH JOHN DR DIPL CHEM , VYVIAL RUDOLF DIPL ING , ZUERGER MANFRED ING GRAD , BORHO KLAUS DR DIPL ING
Abstract: Photopolymer multilayer elements having water-developable, photosensitive polyvinyl alcohol monomer layers and which are suitable for the production of relief printing plates can be improved with respect to their production, drying and shelf life by applying a thin layer of a low-molecular-weight, highly hydrolysed polyvinyl alcohol.
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