METHOD FOR CROSSLINKING RADIATION CROSSLINKABLE PRESSURE-SENSITIVE CONTACT FILM

    公开(公告)号:JPH11189664A

    公开(公告)日:1999-07-13

    申请号:JP27512098

    申请日:1998-09-29

    Applicant: BASF AG

    Abstract: PROBLEM TO BE SOLVED: To adjust crosslinking so that an optimal combination of adhesive properties, peeling strength and shear strength can be obtained by exposing a radiation crosslinkable pressure-sensitive contact film to a radiation pattern formed of regions of different strength. SOLUTION: As a method for crosslinking a radiation crosslinkable pressure- sensitive contact film by exposing the radiation crosslinkable pressure-sensitive contact film to actinic rays of a regulated dose, the film surface is exposed to a regular or irregular radiation pattern formed of regions of different strengths to crosslink the pressure-sensitive contact film. The radiation pattern can be generated by converging radiation by an optical lens or a magnetic lens or by shading using shade regions by a mask or a stencil. As a crosslinkable compound, a copolymer of a benzophenone group-substituted (meth) acrylic acid derivative and an unsubstituted (meth)acrylate is particularly suitable.

    4.
    发明专利
    未知

    公开(公告)号:ES2053677T3

    公开(公告)日:1994-08-01

    申请号:ES88117889

    申请日:1988-10-27

    Applicant: BASF AG

    Abstract: A biocatalyst is produced by mixing… a) an insoluble, only slightly swellable copolymer of an N-vinyllactam with a cyclic amide which contains at least two ethylenically unsaturated copolymerisable groups, of which at least one is bonded directly to the amide nitrogen,… b) crude pig pancreatic lipase,… c) at least one water-soluble dihydric to hexahydric alcohol with 2 to 6 carbon atoms and… d) an aqueous buffer solution of pH 5 to 9… at 0 to 40 DEG C, filtering after 1 minute to 3 days and washing the filter cake, and is used for resolving esters of racemic alcohols.

    5.
    发明专利
    未知

    公开(公告)号:DE3877143D1

    公开(公告)日:1993-02-11

    申请号:DE3877143

    申请日:1988-10-27

    Applicant: BASF AG

    Abstract: Prodn. of biocatalysts is effected by (a) mixing a carrier with crude porcine pancreatic lipase (PPL), an aq. buffer soln. (pH 5-9) and a water-soluble 2-6C polyol contg. 2-6 OH gps., at 0-40 deg.C, (b) filtering the mixt. after 1 min. to 3 days and (c) washing the filter cake. The carrier is a powdered, insoluble, only slightly swellable copolymer of (i) an N-vinyl 4-6C lactam and (ii) a cyclic amide contg. at least two ethylenically unsatd. copolymerisable gps..

    8.
    发明专利
    未知

    公开(公告)号:DE19721691A1

    公开(公告)日:1998-11-26

    申请号:DE19721691

    申请日:1997-05-23

    Applicant: BASF AG

    Abstract: Adhesives (I), containing (a) 5-95 wt% adhesive dispersion with a viscosity of 2000-10,000 mPa.s which contains (a1) an aqueous polymer dispersion obtained by radical polymerisation of a mixture (M) containing ethylenically unsaturated monomer(s) (A) to a polymer (P) in presence of a protective colloid based on a water-soluble prepolymer of at least one water-soluble monomer (B) selected from alpha . beta -unsaturated 3-6C mono- or di-carboxylic acids, their anhydrides and half-esters and mixtures thereof, (a2) optionally a base, i.e. alkali metal hydroxide, ammonia or volatile amine, (a3) optionally a completely water-miscible organic solvent, and optionally other additives, (b) 0-90 wt% polysaccharide and/or protein and/or protein degradation product, (c) 0-95 wt% filler(s), (d) 0-10 wt% emulsifier(s), (e) 0-30 wt% other additives, and water to 100 wt%.

    10.
    发明专利
    未知

    公开(公告)号:DE3819467A1

    公开(公告)日:1989-12-14

    申请号:DE3819467

    申请日:1988-06-08

    Applicant: BASF AG

    Abstract: Process for preparing a biocatalyst by mixing a) polyolefin fibres which have been rendered hydrophilic, b) crude porcine pancreatic lipase, c) at least one water-soluble dihydric to hexahydric alcohol with 2 to 6 carbon atoms and d) an aqueous buffer solution of pH 5 to 9 at 0 to 40 DEG C, filtering after 1 minute to 3 days, and washing the filter cake, and the use of the biocatalyst obtained in this way for resolving esters of racemic alcohols in aqueous medium.

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