摘要:
A multi-layer element for the production of printing plates and relief plates which is based on an elastomeric polymer binder and is firmly anchored to a polyester base by means of an adhesive layer. The adhesive layer consists of a thermally hardened mixture which is insoluble in aromatic hydrocarbon solvents or aliphatic halohydrocarbon solvents and contains (c1) from 90 to 40% by weight, based on the sum of (c1) and (c2), of an hydroxyl-containing polyurethane, hydroxyl-containing epoxy, hydroxyl-containing phenoxy resin, polyester-ol or polyether-ol resin which has been hardened and crosslinked with isocyanate, and which has from about 4 to 20% by weight, based on the non-crosslinked and hardenable resin, of free OH groups before hardening and crosslinking with isocyanate, and (c2) from 10 to 60% by weight, based on the sum of (c1) and (c2), of an OH-free polycarbonate which is compatible with the resin (c1) before the latter is hardened and crosslinked.
摘要:
Photopolymerizable compositions based on an elastomeric styrene-diene block polymer, one or more photopolymerizable olefinically unsaturated monomers and one or more photopolymerization initiators exhibit improved properties if they contain, as an essential constituent, an elastomeric block copolymer of the general structure A-B-C, where A is a thermoplastic, non-elastomeric polymer block based on styrene compounds and having a second order transition point above +25.degree. C., B is an elastomeric polymer block based on butadiene and/or isoprene and having a second order transition point below -20.degree. C. and C is a polymer block, different from B, having a second order transition point of from -30.degree. C. to +15.degree. C., C being either a homopolymer or copolymer block based on butadiene or isoprene or a random copolymer block based on conjugated dienes and styrene compounds. The photopolymerizable compositions may be used, inter alia, for the production of photo-curable adhesives, resilient and flexible sheet material and, in particular, flexographic relief printing plates.
摘要:
A photopolymerizable recording material for the production of relief plates comprises a photopolymerizable layer which can be developed in an alcoholic solution and contains a mixture of a photoinitiator, a photopolymerizable monomer and a linear, high molecular weight polyurethane which possesses activated double bonds in side branches, and is prepared using a polyether-diol from the group comprising the polyethylene glycols, propylene glycols and ethylene glycol/propylene glycol co-condensates.
摘要:
Photosensitive compositions based on soluble vinylpyrrolidone polymers, soluble or swellable polycarboxylic acids, photopolymerizable olefinically unsaturated monomers and optional additions of photoinitiators and polymerization inhibitors.The photosensitive compositions of the invention are suitable for the preparation of printing plates, particularly lithographic plates.
摘要:
Laminates for the manufacture of flexographic printing plates and containing (a) a layer consisting essentially of a photocrosslinkable mixture of a two-block copolymer of from 30 to 95% w/w of a diene hydrocarbon and from 5 to 70% w/w of a styrene monomer or a partially hydrogenated product thereof with a compatible monomer having at least one C--C double bond, said mixture containing a photo-initiator, (b) a non-photocrosslinkable elastomeric underlayer having a Shore A hardness of from 15 to 70 and (c) a non-photocrosslinkable stablizing layer preferably between layers (a) and (b).
摘要:
The present invention relates to a tissue infiltration device (1) for samples (34) contained in cassettes (5). The tissue infiltration device (1) comprises at least two liquid containers (7, 11a-11d, 13, 15) and a transport apparatus (6). A liquid (12, 14, 16) having a property that can be predetermined can be filled into a liquid container (7, 11a-11d, 13, 15). A plurality of cassettes (5) can be held by a transport device (4). Using the transport apparatus (6), a transport device (4) can be brought to a liquid container (7, 11a-11d, 13, 15) and/or moved away from a liquid container (7, 11a-11d, 13, 15). A sequence of operations (8) can be prescribed in which a transport device (4) runs through the liquid containers (7, 11a-11d, 13, 15) of the tissue infiltration device (1). So that an accelerated or priority processing of a transport device (4) is possible using the tissue infiltration device (1), but without using an additional liquid container (7, 11a-11d, 13, 15) provided only for this purpose, it is provided that at least two transport devices (4) can be brought into a liquid container (7, 11a-11d, 13, 15) above and/or next to one another, wherein said transport devices can have different dwell times in the liquid container (7, 11a-11d, 13, 15).
摘要:
A crane, particularly a track-bound mobile crane, having a luffing jib located on a vehicle frame so as to be slewable upward and downward around a horizontal axis and rotatable around a vertical axis. In order to transport long and heavy loads in narrow areas, especially during the construction of bridges or tracks, the luffing jib is supported on at least one swivel bearing located on a vehicle frame end and is slewable upward and downward or liftable by a lifting drive arranged between the ends of the vehicle frame.
摘要:
The invention relates to water-soluble alkali salts of mono- and disulfonic acid derivatives and mono- and disulfonamide derivatives of 6,6'-methylene-bis-(2,2,4-trimethyl-1,2-dihydroquinoline) and dimer and/or trimer condensation products thereof bound with a methylene bridge at the 8 or 8' position. The new compounds are radioprotective and radiosensibilizers at the same time, and may be used both in the therapy and prophylaxis of malignant tumors.
摘要:
Photopolymerizable mixtures of (a) one or more block copolymers, (b) one or more photopolymerizable, ethylenically unsaturated, low molecular weight compounds and (c) a photopolymerization initiator, with or without (d) other additives, contain as component (a) block copolymers which are composed solely of elastomeric polymer blocks, and contain two or more elastomeric polymer blocks having a glass transition temperature of from -20.degree. C. to +15.degree. C., linked by one or more elastomeric polymer blocks having a glass transition temperature of below -20.degree. C.
摘要:
A multi-layer element contains a photosensitive layer composed of a mixture of an elastomeric polymer as a binder, a photopolymerizable monomer and a photopolymerization initiator, the photosensitive layer being bonded to a polyester base via an adhesive layer. The adhesive layer is composed of a reaction product, which is insoluble in the process solvents, of a hardenable cellulose ether and a polyisocyanate. The multi-layer element is particularly suitable for the production of printing plates and relief plates, and can be produced by applying a layer of an adhesive, which contains the hardenable cellulose ether and the polyisocyanate, to the polyester base, baking the adhesive to form the insoluble adhesive layer, and applying the photosensitive layer.