Abstract: This invention relates to an improvement in a material adapted for imagewise exposure to actinic light comprising a transparent or translucent support having a positive-acting quinone diazide light-sensitive coating composition in direct contact with one surface thereof, the improvement comprising that the surface of said coating in direct contact with said support is substantially photodecomposed, and that a gradient exists in said coating wherein the percentage of undecomposed light-sensitive quinone diazide increases with increasing distance from said support. The invention also relates to a method for preparing the novel material.

Abstract: This invention relates to an improvement in a radiation-sensitive mixture containing (a) a compound which forms an acid under the influence of actinic radiation and (b) a compound which has at least one acid-cleavable bond and the solubility of which in a liquid developer is increased by the action of an acid, the improvement that the compound which is capable of being cleft by an acid contains at least one N-acyliminocarbonate group as the acid-cleavable group. The invention also relates to a process for producing relief images using the radiation-sensitive mixture.

Abstract: This invention relates to an improvement in a photochemical process for the preparation of printing plates wherein a printing plate comprising a photosensitive composition coated on a support is exposed to a pattern of laser light, the intensity of which light is modulated in accordance with an input source of information, and said printing plate is subsequently developed by removal from said support of that portion of the photosensitive coating composition which is not exposed to said pattern of laser light, the improvement comprising utilizing a pattern of laser light generated by a laser, and utilizing as a photosensitive composition a mixture consisting essentially of: (1) a negative-working condensate of a para-amino benzene diazonium compound present in an effective amount sufficient to sensitize said photosensitive composition to laser light, and (2) a colorant capable of absorbing light in the spectral range between about 450 -550 nm, said colorant selectively sensitizing the condensate to said laser

Abstract: This invention relates to an improvement in a radiation-sensitive mixture containing (a) a compound which forms an acid under the influence of actinic radiation and (b) a compound which has at least one acid-cleavable C--O--C group and the solubility of which in a liquid developer is increased by the action of an acid, the improvement that the compound which is capable of being cleft by an acid contains at least one enol ether group as the acid-cleavable group. The invention also relates to a process for producing relief images using the radiation-sensitive mixture.

Abstract: Disclosed is a packaging material suitable for manufacturing synthetic sausage casings, comprised of a cellulose hydrate base layer and a layer of vinylidene chloride containing copolymer on the base layer, as well as several methods for preparing the packaging material.

Abstract: This invention relates to a photopolymerizable mixture comprising a polymeric binder which is soluble or swellable in aqueous-alkaline solutions, a photoinitiator, a compound with at least two terminal acrylic or methacrylic acid ester groups and a boiling point above 100.degree. C. which is capable of addition polymerization, and a polyurethane corresponding to the following Formula I ##STR1## wherein --X-- is one of the following groups: ##STR2## Y is a saturated aliphatic or cycloaliphatic group with 2 to 12 carbon atoms,Z is ##STR3## R.sub.1 is R.sub.4 or CONH--R.sub.4, R.sub.2 and R.sub.3 are hydrogen atoms or methyl groups,R.sub.4 is a saturated aliphatic group with 1 to 20 carbon atoms,n is zero or a whole number from 1 to 15,m is a whole number from 2 to 4,p is zero or a whole number from 1 to 4,k is a whole number from 2 to 12,r is a whole number from 4 to 12,n+p is a whole number from 1 to 19, and whereinR.sub.1 is R.sub.4 if p=0, and R.sub.1 is CONH--R.sub.4 if n=0.

Abstract: This invention relates to a process for preparing swellable cross-linked carboxyalkylcelluloses in the form of fibers, by reacting cellulose, a carboxyalkylating etherifying agent, and a cross-linking agent in an aqueous alkaline medium, comprising effecting alkalizing, etherifying, and cross-linking simultaneously in one reaction step using fibers of cellulose hydrate or fiber-based textile sheet materials which contain these fibers, by contacting said fibers or textile sheet materials which contain these fibers with an ample quantity of an aqueous alkaline reaction mixture, removing part of the reaction mixture from the fibers or the textile sheet materials contacted therewith, so that at least the quantity required for reaction is still present, and treating the fibers or the textile sheet materials containing the remainder of the aqueous alkaline reaction mixture with heat energy.

Abstract: This invention relates to a radiation-sensitive copying composition which comprises (a) a compound which forms an acid under the influence of actinic radiation, and (b) an organic polymeric compound which contains recurrent acetal or ketal groupings in its main chain and whose solubility in a liquid developer is increased by the action of an acid, each .alpha.-carbon atom of the alcoholic constituent of the acetal or ketal grouping of the organic polymeric compound being aliphatic. The invention also relates to a process for the production of relief images using a radiation-sensitive copying composition.

Abstract: This invention relates to a prefabricated casting mold for aluminothermically welding rail ends spaced apart by a gap while simultaneously welding shut a fishplate hole in the region of each rail end, comprising two mold halves which, when assembled, form a cavity adapted to enclose the rail ends and being so widened in the region of the rail web and in the longitudinal direction of the rails that the two fishplate holes are located within the cavity, a pair of riser channels in each mold half, at least one of the riser channels in each half issuing centrally into the rail base region of the casting mold cavity and having at least one means of communication with the casting mold cavity in the rail web region, and the other of the riser channels in each mold half communicating with the casting mold cavity in the vicinity of a fishplate hole.

Abstract: This invention relates to an improvement in a photopolymerizable mixture, comprising a polymeric binder which is soluble or at least swellable in aqueous-alkaline solutions, a compound with at least two acrylic or methacrylic acid ester groups and a boiling point above 100.degree. C. which is capable of addition polymerization, a photoinitiator, and a plasticizer, the improvement being that the plasticizer is a compound corresponding to Formula I ##STR1## wherein R.sub.1 is a hydrogen or halogen atom or an alkyl group with 1 to 4 carbon atoms, R.sub.2 is a hydrogen atom, an OH group, or an alkyl group with 1 to 4 carbon atoms, R.sub.3 is a hydrogen atom or a methyl group, R.sub.4 is an alkyl or alkenyl group with 1 to 20 carbon atoms, and n is zero or a whole number from 1 to 20, and wherein R.sub.4 has at least 4 carbon atoms if n is zero or 1. The invention also relates to a light-sensitive transfer material including the photopolymerizable mixture.

Abstract: This invention relates to a stretched shrinkable film of polyethylene terephthalate containing about 2 to 35 percent by weight of polybutylene terephthalate.

Abstract: This invention relates to an improvement in a liquid developer for the development of electrostatic charge images, comprising an electrically insulating carrier liquid in which pigments or dyestuffs, resinous binders, a polarity control agent, and conventional additives are dispersed or dissolved, the improvement that the polarity control agent is a copolymer which is soluble in the carrier liquid and is composed of 1 to 50 percent by weight of N-vinyl-2-pyrrolidone and 50 to 99 percent by weight of a methacrylic acid ester.

Abstract: This invention relates to an improvement in a developing apparatus, especially as part of a photoprinting machine, for developing diazotype copying material capable of being developed by an atmosphere containing gaseous ammonia and water vapor, including a developing chamber comprising at least one first, heated, inclined evaporator trough to which fresh ammonia is adapted to be fed at one side while ammonia water with a reduced ammonia content is adapted to be drained off at the other side, the ammonia water with the reduced ammonia content being adapted to form a pool, and further comprising a siphon through which the ammonia water with the reduced ammonia content and condensate formed in the developing chamber are adapted to be drained off, the improvement that the siphon forms part of an evaporator arranged outside of the developing chamber from which a developer gas pipe leads into the developing chamber, and further comprising a, preferably unheated, reservoir for the ammonia water with the reduced ammo

Abstract: The present invention relates to a photopolymerizable mixture comprising a compound with at least two terminal ethylenically-unsaturated groups, a boiling point above 100.degree. C. and which is capable of addition polymerization, a polymeric binder, a photoinitiator, and a monoazo dye corresponding to Formula I: ##STR1## R.sub.2 and R.sub.3 are alkyl or alkenyl groups which may be substituted, and R.sub.4 and R.sub.5 are hydrogen or halogen atoms, or alkyl or alkoxy groups.

Abstract: This invention relates to an improvement in apparatus for developing printing plates, comprising at least one tank in which a processing liquid is contained and at least one filter means through which the processing liquid is passed on its flow path from or to the tank, the improvement comprising means mounting the filter means within the tank without a filter housing of its own, and means mounting the tank on carriage means which can be withdrawn from the apparatus.

Abstract: This invention relates to an improvement in a shock-proof bearing for a heavy drum which is rotatably supported on roller and is adapted to be driven by a gear drive, the axial spacing between the drum and the roller or the gear drive remaining constant for every spring-support position, the improvement comprising that the roller and a driving pinion are integral, and spring support elements mounted between a casing of the roller and a hub thereof.

Abstract: This invention relates to a process for shaping a recording produced on a material including a photoconductive, thermoplastic layer disposed on a carrier by electrostatic charging and exposure to light, which process comprises disposing the said material on a rigid base, at least one surface region of which is electrically conductive, and heating it.

Abstract: This invention relates to an improvement in a photopolymerizable transfer material comprising a flexible base, and a thermoplastic photopolymerizable copying layer, the improvement comprising including an adhesion-imparting substance at the boundary of said copying layer away from said base, said substance having the formula ##STR1## in which n is 0 or an integer from 1 to 3,R.sub.1 is H or OH,R.sub.2 is H or COOR.sub.3, andR.sub.3 is an alkyl group having about 1 or 25 carbon atoms.

Abstract: This invention relates to an electrophotographic recording material consisting of an electroconductive support material and a photoconductive double layer of organic materials which consists of a homogeneous, opaque, charge carrier producing dyestuff layer and of a transparent top layer of insulating materials with at least one charge transporting compound.

Abstract: This invention relates to an improvement in the process for anodically oxidizing materials in the form of strips, foils, or sheets composed of aluminum or aluminum alloys in an aqueous electrolyte containing sulfuric acid and phosphoric acid, if appropriate, after a previous mechanical, chemical or electrochemical roughening, the improvement which comprises anodically oxidizing the material in an electrolyte having a concentration of sulfuric acid ranging from about 25 to 150 g per liter, of phosphoric acid ranging from about 10 to 50 g per liter, and of aluminum ions ranging from about 5 to 25 g per liter, at a current density ranging from about 4 to 25 A/dm.sup.2, and a temperature ranging from about 25.degree. to 65.degree. C.