11.
    发明专利
    未知

    公开(公告)号:DE3889773D1

    公开(公告)日:1994-07-07

    申请号:DE3889773

    申请日:1988-06-08

    Applicant: BASF AG

    Abstract: A mixture which is crosslinkable by photopolymerisation, is soluble or dispersible in aqueous media and is based on hydroxyl- and/or amido-containing polymers as binders, photopolymerisable monomers which are compatible therewith and photopolymerisation initiators and which contains, based on its total amount, from 0.1 to 10% by weight of an aldehyde of the formula I in which R is a hydrogen atom, a hydroxyl group or a C1-C6-alkyl, C1-C6-alkoxy, C6-C10-aryl or C6-C10-aryloxy radical, can be used in multilayer photosensitive recording materials which can be developed using aqueous media and contain at least one layer of a mixture of this type.

    13.
    发明专利
    未知

    公开(公告)号:FI890480A

    公开(公告)日:1989-08-06

    申请号:FI890480

    申请日:1989-02-01

    Applicant: BASF AG

    Abstract: A novel sheet-like light-sensitive recording material I with at least one photopolymerisable, relief-forming layer (A) which, relative to (A), contains a1) 20 to 99.499 % by weight of at least one polymeric binder from the group comprising random ethylene/propylene/alkadiene terpolymers of an ethylene content of from 40 to 80 % by weight and a double bond content of 2 to 20 olefinic double bonds per 1000 carbon atoms, a2) 0.001 to 10 % by weight of at least one photopolymerisation initiator, a3) 0.5 to 50 % by weight of at least one monomer which is compatible with the binder (a1) and contains at least one photopolymerisable olefinic double bond, and a4) 0 to 40 % by weight of at least one auxiliary, by means of which the property pattern is varied, and the production of novel relief plates, relief printing plates and photoresists from these novel recording materials I and novel flexographic printing plates which have been produced from the recording materials I.

    15.
    发明专利
    未知

    公开(公告)号:NO141506C

    公开(公告)日:1980-03-26

    申请号:NO743605

    申请日:1974-10-04

    Applicant: BASF AG

    Abstract: The invention relates to relief plates for flexographic printing comprising a relatively soft elastomeric base (U) having a modulus of elasticity of from 10 to 200 kg/cm2 and a thickness of from 0.5 to 6 mm and, firmly bonded thereto, a thin, relatively hard, difficultly soluble intermediate layer Z having a modulus of elasticity of from 1 x 103 to 2.1 x 106 kg/cm2 and a thickness of from 5 to 500 mu and, firmly bonded to said intermediate layer Z, a relief layer P' consisting of a photocrosslinked elastomeric mixture having a modulus of elasticity of from 30 to 2000 kg/cm2 and a thickness of from 200 to 300 mu , the modulus of elasticity of the photocrosslinked relief layer P' being the same as or higher than that of the base U and the neutral surface of the relief plate lying in or near the intermediate layer Z. The invention also relates to photosensitive laminates for the production of such plates.

    Embossing matrices prodn. from liq. photopolymerisable compsn. - using mould formed by matrix and frame, for simplicity and speed

    公开(公告)号:DE2458523A1

    公开(公告)日:1976-06-16

    申请号:DE2458523

    申请日:1974-12-11

    Applicant: BASF AG

    Abstract: In the prodn. of matrices for embossing by placing a curable compsn. in the patric mould formed with the matrix and curing the compsn., a liquid photopolymerisable material (I) is poured into a mould formed from a matrix and edge suited to the wall thickness of the patrix, (I) hardening to a material with a hardness of 50 Shore A to 80 Shore D, pref. 70 Shore A to 50 Shore D on photopolymsn. with full-tone exposure, with shrinkage of is not >5, pref. 2% (w.r.t. a 10 cm x 10 cm sample ; and (I) is photopolymesd. slowly by full-tone exposure with actinic light and then released from the mould. The patrix pref. is tempered in the mould at 40-100 degrees C, opt. under pressure, after photopolyms. The matrices can be produced away from the printing machine, e.g. in the repro division of the printing works. Installation in the machine, together with the matrices, can be carried out quickly (in a few min.) and without problems. In addn., the properties of the material ensure good embossing quality and high editions at low wastage. The matrices ae re-usable.

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