Polyamide Or Polyurethane Patents (Class 430/906)
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Patent number: 4889793Abstract: The present invention relates to a photosensitive polymer composition comprising the following components A, B and C:A: 100 parts by weight of ethylenically unsaturated compounds,B: 3 to 40 parts by weight of a polyamide or 3 to 32 parts by weight of a polyesteramide soluble in the ethylenically unsaturated compounds andC: 0.01 to 10 parts by weight of a photopolymerization initiator, and a solid photosensitive printing plate material comprising the above-mentioned photosensitive polymer composition and a support, which solid photosensitive printing plate material can be easily prepared from a substantially solvent-free starting material and usable for the production of a printing plate, flexible printing plate and flexographic printing plate developable with water and/or an alcohol.Type: GrantFiled: October 5, 1987Date of Patent: December 26, 1989Assignee: Toray Industries, Inc.Inventors: Masaharu Taniguchi, Masazumi Tokunow, Junichi Fujikawa
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Patent number: 4889789Abstract: A photosensitive composition which substantially comprises a binder which is insoluble in water and soluble in aqueous-alkaline solutions, a photosensitive 1,2-naphthoquinone-diazide or a photosensitive mixture comprised of a compound which splits off acid upon exposure to light and a compound containing at least one acid-cleavable C-O-C group, and a thermally crosslinking compound comprising a urea or urethane-formaldehyde condensation product is disclosed. Also disclosed is a copying material prepared from this composition. The material has a good shelf life and can be processed as a positive or negative-working material, and also according to the photocomposing method. For development customary developer solutions are used.Type: GrantFiled: April 4, 1988Date of Patent: December 26, 1989Assignee: Hoechst AktiengsellschaftInventor: Paul Stahlhofen
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Patent number: 4877711Abstract: A light-sensitive composition which contains a polyurethane resin having a carbon-carbon unsaturated bond and a carboxyl group. A presensitized plate using the above light-sensitive composition can be developed with an aqueous alkaline developing solution and provides a lithographic printing plate having excellent printing durability.Type: GrantFiled: May 12, 1987Date of Patent: October 31, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshiaki Aoai, Kazuo Maemoto, Akihiko Kamiya, Hiroshi Misu
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Patent number: 4865950Abstract: A laminate, adapted for manufacturing frames of metal beam leads that are bonded to integrated circuit chips, comprises(a) a flexible metal strip,(b) a layer of a first resist adhered to one surface of the metal strip, and(c) a layer of a second resist adhered to the opposite surface of the metal strip, wherein said second resist is a positive-working resist having a polysulfonamide binder whereby improved mechanical properties including flexibility and adhesion to the metal are obtained.Type: GrantFiled: January 21, 1988Date of Patent: September 12, 1989Assignee: Eastman Kodak Co.Inventor: Thap DoMinh
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Patent number: 4859562Abstract: A photosensitive mixture that contains a photosensitive compound, for example, a photoinitiator or a diazo compound, and a reaction product of a polymer containing active hydrogen with an olefinically unsaturated compound represented by the formula ##STR1## wherein X and Y are the same or different and denote oxygen or sulfur,R.sub.1 is an olefinically unsaturated aliphatic radical containing 2 to 8 carbon atoms andR.sub.2 is a saturated aliphatic radical containing 1 to 8 carbon atoms or an aryl radical containing 6 to 10 carbon atoms,is suitable for producing photoresists and printing plates.Type: GrantFiled: May 8, 1987Date of Patent: August 22, 1989Assignee: Hoechst AktiengesellschaftInventors: Georg Pawlowski, Hans-Jerg Kleiner, Thomas Gerdau
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Patent number: 4840868Abstract: A photosensitive composition is described, which contains a diazonium salt polycondensation product and a polymeric binder which is soluble or at least swellable in aqueous-alkaline solutions and comprises a reaction product of a trimellitic anhydride, the free carboxyl group of which is esterified with an alcohol containing a urethane group, with a polymer containing hydroxyl groups and having no further functional groups capable of reaction with acid anhydrides. The composition yields an increased print run and has, at the same time, good storability and developability.Type: GrantFiled: December 21, 1987Date of Patent: June 20, 1989Assignee: Hoechst AktiengesellschaftInventors: Georg Pawlowski, Guenter Hultsch, Gerhard Mack
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Patent number: 4839254Abstract: A photosensitive mixture contains a photosensitive compound and a polymeric binder which s a reaction product of a compound represented by the formula ##STR1## wherein X and Y are the same or different, and each denotes oxygen or sulfur,R.sub.1 and R.sub.2 are the same or different, and each denotes an unsubstituted or substituted alkyl, cycloalkyl or alkoxy radical containing from 1 to 6 carbon atoms; an unsubstituted or substituted aryl or aryloxy radical containing from 6 to 10 carbon atoms; or, together with the phosphorus atom, a 5- or 6-membered heterocyclic ring which is unsubstituted or substituted or which carries a fused benzene ring,with a polymer containing active hydrogen. The novel binders used in the mixture can be easily prepared and yield photosensitive layers of good developability and developer resistance.Type: GrantFiled: May 8, 1987Date of Patent: June 13, 1989Assignee: Hoechst AktiengesellschaftInventors: Georg Pawlowski, Hans-Jerg Kleiner
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Patent number: 4806450Abstract: A photosensitive recording element which is suitable for the production of printing plates or resist images, possesses a photopolymerizable recording layer which is applied to a dimensionally stable base, can be developed in an aqueous alkaline medium and contains, as a polymeric binder, one or more film-forming copolymers which are insoluble in water but soluble or dispersible in aqueous alkaline solutions and consist of from 10 to 50% by weight of one or more hydroxyalkyl (meth)acrylates, from 8 to 30% by weight of acrylic acid and/or methacrylic acid and from 30 to 80% by weight of one or more alkyl (meth)acrylates, some of the carboxyl groups of the copolymer being esterified by reaction with glycidyl (meth)acrylate.Type: GrantFiled: May 28, 1987Date of Patent: February 21, 1989Assignee: BASF AktiengesellschaftInventors: Reiner Hofmann, Axel Sanner
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Patent number: 4806449Abstract: A photosensitive recording element which is suitable for the production of printing plates or resist images possesses a photopolymerizable recording layer which is applied to a dimensionally stable base, can be developed in an aqueous alkaline medium and contains, as a polymeric binder, one or more film-forming copolymers which are insoluble in water but soluble or dispersible in aqueous alkaline solutions and consist of from 10 to 50% by weight of one or more N-vinylamides, from 8 to 30% by weight of acrylic acid and/or methacrylic acid and from 30 to 80% by weight of one or more hydrophobic comonomers which, as such, form homopolymers which are insoluble in water and aqueous alkaline solutions, some of the carboxyl groups of the copolymer being esterified by reaction with glycidyl (meth)acrylate.Type: GrantFiled: May 28, 1987Date of Patent: February 21, 1989Assignee: BASF AktiengesellschaftInventors: Reiner Hofmann, Axel Sanner
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Patent number: 4803147Abstract: A photosensitive polyimide polymer composition comprising a solvent soluble polyimide condensation product of an aromatic dianhydride and an aromatic diamine, a polyfunctional ethylenically unsaturated monomer and a photoinitiator. The solvent soluble polyimides of the composition are prepared from at least one compound selected from 2,2-hexafluoro-bis-(3,4-dicarboxyphenyl)tetracarboxylic dianhydride; 1,1-bis-[4-(1,2-dicarboxyphenyl)]-1-phenyl-2,2,2-trifluoroethane dianhydride; 2,2-hexafluoro-bis(3-aminophenyl)propane; 2,2-hexafluoro-bis(4-aminophenyl)propane; 2,2-hexafluoro-bis-[4-(3-aminophenoxy)phenyl]propane; 2,2-hexafluoro-bis-[4-(4-aminophenoxy)phenyl]propane and 1,1-bis-(4-aminopheny)-1-phenyl-2,2,2-trifluoroethane or mixtures thereof.Type: GrantFiled: November 24, 1987Date of Patent: February 7, 1989Assignee: Hoechst Celanese CorporationInventors: Werner H. Mueller, Dinesh N. Khanna, Rohitkumar H. Vora
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Patent number: 4797353Abstract: A method for processing a silver halide light-sensitive material is disclosed, comprising a support having thereon at least one silver halide emulsion layer with an automatic developing machine which comprises developing an imagewise exposed silver halide light-sensitive material, wherein an amount of organic substances remaining in at least one of the emulsion layer or other hydrophilic colloid layers comprising a surface protective layer after said processing with said automatic developing machine, is not more than about 90 wt % of the weight of said organic substances prior to said processing.Type: GrantFiled: September 10, 1987Date of Patent: January 10, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Sumito Yamada, Hiroshi Kawasaki, Masaki Satake
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Patent number: 4783386Abstract: Provided is an optical information recording medium and a method of recording information thereon. The information layer of the recording medium comprises an anthracyanine or phenanthracyanine chromophore compound. In a preferred embodiment, the chromophore is substituted with at least one substituent conferring film forming properties to the chromophore, e.g., a monomer or oligomeric substituent comprised of acid, amide or ester units. The resulting information layer exhibits strong absorption in the range of from about 780-850 nm. Employing an anthracyanine or phenanthracyanine chromophore substituted with a film forming substituent further offers the advantages of a single component material exhibiting good thermomechanical properties.Type: GrantFiled: January 12, 1987Date of Patent: November 8, 1988Assignee: Hoechst Celanese CorporationInventors: David E. Nikles, R. Sidney Jones, Jr., James E. Kuder
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Patent number: 4753865Abstract: A solid photopolymerizable composition, contains addition polymerizable ethylenically unsaturated monomer, initiating system, polymer binder and a microgel wherein preferably the binder and microgel form substantially a single phase and have a similar glass transition temperature above 25.degree. C. Although less preferred the solid composition can function without the binder. A preferred use is as a photoresist.Type: GrantFiled: January 22, 1986Date of Patent: June 28, 1988Assignee: E. I. Du Pont de Nemours and CompanyInventors: Michael Fryd, Terry R. Suess
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Patent number: 4721665Abstract: The invention features a lithographic composition fabricated from a process wherein an acidic novolak resin is neutralized in solution. The solution comprises a common compatible solvent with the other ingredients of the coating composition, such as a positive sensitizer, a color changing dye, and a light activated, acid-releasing compound.Type: GrantFiled: September 29, 1986Date of Patent: January 26, 1988Assignee: Polychrome CorporationInventors: Thomas Dooley, James Shelnut
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Patent number: 4717640Abstract: A light-sensitive mixture containing a light-sensitive compound or a light-sensitive combination of compounds, the solubility of which is increased upon exposure, and a binder made from a polymer which has units of alkenylsulfonylaminocarbonyloxystyrenes or cycloalkenylsulfonylaminocarbonyloxystyrenes and which is insoluble in water and soluble in aqueous alkali. Moreover, a recording material is described which is particularly used in the production of printing plates coated with a light-sensitive layer of the indicated mixture. The printing form obtained after exposure and development of the material can be baked at temperatures ranging from 180.degree. C. to 250.degree. C. without forming difficult to remove deposits on the non-image areas of the plate. As a result, a printing form is produced, which has a particularly high resistance and yields a large print run.Type: GrantFiled: December 11, 1985Date of Patent: January 5, 1988Assignee: Hoechst AktiengesellschaftInventor: Paul Stahlhofen
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Patent number: 4608333Abstract: A radiation-sensitive composition is described, which is comprised of (1) a polymer containing repeating units of the formula: ##STR1## wherein R.sup.1 is a trivalent or tetravalent aromatic or heteroaromatic residue having 6 to 30 carbon atoms, R.sup.2 is a divalent aromatic or heteroaromatic residue having 6 to 30 carbon atoms, R.sup.3 is hydrogen or an ammonium ion, n is 1 or 2, and COOR.sup.3 is located in an ortho or peri position with respect to the amide linkage, (2) an organic compound having a radiation-dimerizable or radiation-polymerizable olefinic double bond and an amino radical or a quaternary ammonium salt, and (3) an aromatic secondary or tertiary amine compound which is chemically inactive to actinic radiation. This composition has an improved photo-sensitivity or radiation sensitivity and can give highly heat-resistant relief patterns with a good edge sharpness and good mechanical and chemical properties as well as good insulating properties.Type: GrantFiled: February 10, 1984Date of Patent: August 26, 1986Assignee: Toray Industries, Inc.Inventors: Gentaro Ohbayashi, Susumu Umemoto, Hiroo Hiramoto
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Patent number: 4608331Abstract: Photopolymeric polyurethanes are provided which have a polymeric backbone including recurring urethane or urea groups or both and which have unsaturated hydrocarbon groups attached to this backbone. These photopolymers are combined with a solvent and have a selected and controlled molecular weight and viscosity. The photopolymeric polyurethane solutions are especially useful in providing plates that have a layer including a photopolymer, particularly plates for printing or photoresists that have a photopolymeric layer over a layer of light sensitive diazonium composition.Type: GrantFiled: November 16, 1984Date of Patent: August 26, 1986Assignee: Witco Chemical CorporationInventors: Carl Bernstein, Konstantinos Arvanitis, Luigi Amariti
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Patent number: 4598038Abstract: Highly heat resistant polyimide and polyisoindoloquinazoline dione relief structures can be produced by applying radiation-sensitive soluble polymer precursors in the form of a film or foil on a substrate, irradiating the film or foil through negative patterns with actinic light or electrons or a light, electron, ion or laser beam, removing the unirradiated film or foil portions and optionally by subsequent annealing. The relief structures are produced in an inexpensive manner with high purity and in a chloride-free form as well as having economically acceptable exposure times as a result of using as polymer precursors poly-condensation products which are prepared in the presence of carbodiimides. The polycondensation products are prepared from diamino compounds or diamino compounds having at least one orthopositioned amido group and olefinically unsaturated tetracarboxylic acid diesters of aromatic and/or heterocyclic tetracarboxylic acid dianhydrides and olefinically unsaturated alcohols.Type: GrantFiled: March 27, 1985Date of Patent: July 1, 1986Assignee: Siemens AktiengesellschaftInventor: Hellmut Ahne
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Patent number: 4590144Abstract: 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.Type: GrantFiled: July 13, 1984Date of Patent: May 20, 1986Assignee: BASF AktiengesellschaftInventors: Gunnar Schornick, Mong-Jon Jun, Axel Sanner, August Lehner, Werner Lenz, Peter Richter, Albrecht Eckell
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Patent number: 4576897Abstract: The contact of an image-bearing film to the surface of a photosensitive polyamide printing plate is improved by forming an anti-stickiness layer on the photosensitive polyamide layer, the anti-stickiness layer comprising a polymer which is soluble or dispersible in a developer for the photosensitive polyamide, and having a thickness of 0.2 to 20.mu. and having a matted surface.Type: GrantFiled: December 21, 1984Date of Patent: March 18, 1986Assignee: Toray Industries, IncorporatedInventors: Junichi Fujikawa, Osamu Togashi, Shigetra Kashio
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Patent number: 4564580Abstract: Disclosed is a photosensitive resin composition comprising an aqueous dispersion or emulsion comprising components (1), (3) and (4) as indispensable components and optionally the following component (2):(1) a water-soluble saponified vinyl acetate polymer to which a styrylpyridinium or styrylquinolinium group has been added;(2) a water-dispersible or hydrophobic polymer;(3) a photo-polymerizable unsaturated compound having an ethylenically unsaturated group; and(4) a photo-polymerization initiator.This composition has excellent dispersion stability, sensitivity and resolving power and produces a hardened product having good solvent resistance, water resistance and abrasion resistance.Type: GrantFiled: June 26, 1984Date of Patent: January 14, 1986Assignees: Kogyo Gijutsuin, Murakami Screen Kabushiki KaishaInventors: Kunihiro Ichimura, Tsuguo Yamaoka, Sadayoshi Kaneda, Toru Shibuya
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Patent number: 4557997Abstract: A photo-polymerizable dispersion composition is disclosed. The dispersion composition includes a silver halide which is dispersed within a polyfunctional vinyl monomer and a high molecular binder. The binder is obtained by vinyl polymerization and contains a water insoluble polymer having amide groups and carboxyl group. The resulting dispersion composition can be utilized to form high polymer images having a good oleophilic property which exhibit less swelling even if developed in an aqueous developing solution.Type: GrantFiled: May 25, 1984Date of Patent: December 10, 1985Assignee: Fuji Photo Film Co., Ltd.Inventors: Masayuki Iwasaki, Akira Umehara
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Patent number: 4544624Abstract: The invention provides a photosensitive resin composition containing a soluble synthetic linear high-molecular compound in an amount of 25 to 95 weight percent based on the whole composition, a monomer having at least one photopolymerizable unsaturated bond and a photopolymerization initiator and characterized in that part or all of the soluble synthetic linear high-molecular compound is an addition polymer of an organic diisocyanate compound with an amide compound, both terminals of the amide compound being either primary or secondary amide groups and the equivalent ratio of amino groups to isocyanate groups in the addition polymer is not less than 1.0. The high-molecular weight compound makes up at least 50% by weight base on the total amount of the polymer material present in the composition.Type: GrantFiled: January 2, 1985Date of Patent: October 1, 1985Assignee: Toyo Boseki Kabnushiki KaishaInventors: Masaru Nanpei, Akira Tomita, Toshiaki Fujimura, Kuniomi Etoh
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Patent number: 4525444Abstract: An electrophotographic recording material is described for preparing a printing form or a printed circuit, comprising a layer support and a photoconductive layer comprised of photoconductor, sensitizer and/or activator, if appropriate further additives which improve surface texture and/or adhesion and a high molecular weight binder which is soluble in an alkaline aqueous or alcoholic solution and the photoconductive layer of which recording material contains as binder the product of reacting a sulfonyl isocyanate of the general formula R--SO.sub.2 --NCO in which R is alkenyl having up to 4 carbon atoms or phenyl which can be substituted by alkyl having up to 3 carbon atoms, with a hydroxyl-containing polymer in a molar ratio within the range of (0.5 to 1):1.Type: GrantFiled: March 21, 1983Date of Patent: June 25, 1985Assignee: Hoechst AktiengesellschaftInventor: Karl-Friedrich Doessel
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Patent number: 4504567Abstract: The invention provides a light-sensitive lithographic printing plate containing a light-sensitive composition which has a different degree of solubility in an exposed area of said printing plate than in an unexposed area of said printing plate when said printing plate is developed in a developing solution. This printing plate is produced by a process which comprises coating on a support a solution prepared by dissolving a light-sensitive composition containing a light-sensitive material and at least one fluorinated surfactant having Formula (I) in a quantity of between 0.005% by weight and 0.05% by weight based on the weight of said composition, in at least one solvent having (A) a solubility parameter of at least 8(cal/cm.sup.3)1/2, and (B) a boiling point within the range of from 100.degree. to 200.degree. C. Said Formula (I) is Rf-A-Y, wherein Rf is a partially or completely fluorinated hydrophobic alkyl moiety, A is a single bind or bivalent moiety and Y is a hydrophilic moiety.Type: GrantFiled: August 9, 1984Date of Patent: March 12, 1985Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Takeshi Yamamoto, Kiyoshi Goto
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Patent number: 4486526Abstract: A photopolymerizable coating over a diazo resin provides a high-speed lithographic plate or photoresist while improving the printing life of the plate while making its development simpler than that of most other photopolymer plates. The photopolymer is a cinnamoylated resin which is placed over a diazo based material.Type: GrantFiled: June 9, 1983Date of Patent: December 4, 1984Assignee: Richardson Graphics CompanyInventors: Daniel C. Thomas, Jack L. Sorkin
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Patent number: 4464456Abstract: A photosensitive polymer composition containing 0.01% to 10% by weight of a photosensitizer and, the following components A and B, is presented.A. 100 parts by weight of polyether-ester amide comprising (a) at least one compound selected from the group consisting of aminocarboxylic acids having 6 to 15 carbon atoms, lactams having 6 to 15 carbon atoms and nylon mn salts wherein 10.ltoreq.m+n.ltoreq.30, (b) at least one poly(alkylene oxide) glycol having a number average molecular weight of 200 to 6000, and (c) at least one dicarboxylic acid having 4 to 20 carbon atoms; andB. 10 to 200 parts by weight of at least one photopolymerizable vinyl monomer having a terminal ethylenically unsaturated bond and having a boiling point of at least 150.degree. C.This photosensitive polymer composition is extremely effective for use in a photosensitive flexographic printing plate developable in water or in alcohol.Type: GrantFiled: January 3, 1983Date of Patent: August 7, 1984Assignee: Toray Industries, Inc.Inventors: Junichi Fujikawa, Hiroshi Mataki, Chiaki Tanaka, Shinobu Nakashima
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Patent number: 4458007Abstract: A radiation-polymerizable mixture comprising a polymeric binder, a radiation-activatable polymerization initiator and a polymerizable acrylate or methacrylate ester having at least two urethane groups in the molecule, said ester being a reaction product of glycerol dimethacrylate or glycerol diacrylate and a polyisocyanate obtained by reacting a polyhydroxy compound having from two to six hydroxyl groups with a diisocyanate or a reaction product of glycerol dimethacrylate or glycerol diacrylate and a diisocyanate. The new polymerizable urethanes provide the mixture with a high light-sensitivity, good reciprocity and a low tendency to crystallize.Type: GrantFiled: December 15, 1981Date of Patent: July 3, 1984Assignee: Hoechst AktiengesellschaftInventors: Ulrich Geissler, Heide Sprengel, Walter Herwig, Manfred Hasenjaeger
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Patent number: 4436806Abstract: Printed circuit boards are made by imaging a liquid polymer which has been coated onto the board. The imaging is accomplished while the polymer is wet with the photo tool in a close air gap relationship with the coated board. The uncured polymer which remains liquid is removed after imaging so that the board can be processed by etch resist, plate resist, or solder mask techniques. The cured polymer is removed by stripping with an alkaline solution. The apparatus consists of single station or multi-station equipment to carry out the unit operations of maintaining the board in a set position, coating with a liquid polymer, placing a photo tool in registration with the circuit board blank and in close relationship with the coating, and imaging the liquid polymer via the photo tool to cause areas of the coating to solidify and other areas to remain liquid.Type: GrantFiled: February 22, 1982Date of Patent: March 13, 1984Assignee: W. R. Grace & Co.Inventors: Francis J. Rendulic, Robert K. Trasavage, Paul A. Boduch
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Patent number: 4421840Abstract: A photopolymerizable recording material for the preparation of relief plates comprises a base and a photopolymerizable layer, which layer contains, as the binder, a substantially linear, high molecular weight, thermoplastic diisocyanate-modified nylon which is solid at room temperature and which possesses quaternary and/or quaternizable nitrogen atoms and also possesses photopolymerizable double bonds in side branches.Type: GrantFiled: December 9, 1981Date of Patent: December 20, 1983Assignee: BASF AktiengesellschaftInventors: August Lehner, Heinz U. Werther, Dieter Naegele, Werner Lenz, Mong-Jon Jun, Horst Reimann, Albrecht Eckell
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Patent number: 4387151Abstract: Disclosed is a light-curable mixture, comprising a light-sensitive compound comprising a diazonium salt polycondensation product or an organic azido compound; and a binder comprising a polymer at least swellable in an aqueous-alkaline solution and which comprises alkenylsulfonylurethane or cycloalkenylsulfonylurethane side groups. Also disclosed are light-sensitive copying materials prepared with the mixtures.Type: GrantFiled: September 22, 1981Date of Patent: June 7, 1983Assignee: Hoechst AktiengesellschaftInventors: Dieter Bosse, Werner Frass
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Patent number: 4387157Abstract: A photosensitive multi-layer material comprising a base and a photosensitive layer which has a polyamide binder and is soluble or dispersible in an alcoholic solvent contains two layers between the base and the photosensitive layer, namely (a) an adhesion-promoting layer, adjacent to the base, which is derived from a polyurethane binder, prepared by reacting a hydroxyl-containing epoxy resin and a polyisocyanate, and a pigment combination in which a white zinc sulfide pigment is the essential constituent, and (b) an adhesive layer, adjacent to the photosensitive layer, which consists of a baked mixture of an alcohol-soluble copolyamide and a melamine-formaldehyde resin.Type: GrantFiled: November 23, 1981Date of Patent: June 7, 1983Assignee: BASF AktiengesellschaftInventors: Bernd Bronstert, Herbert Hahn, Gerhard Hoffmann, Werner Lenz
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Patent number: 4383020Abstract: An improvement in the method of preparing a coating or layer of reprographic material upon a substrate which includes the conventional steps of coating the substrate surface with a layer of resinous binder curable upon exposure to radiant energy including electron beam and ultraviolet radiation, the binder layer containing reprographic solids. The resinous binder is applied as a fluid and is irradiated until a coherent and adherent layer is formed. The method includes the steps of forceably applying and tautly maintaining a sheet of a smooth flexible film against the surface of the curable resinous binder while directing a beam of radiant energy through the sheet and onto the binder while the layer of flexible film is held thereagainst. The exposure to radiant energy is continued until the resinous binder is substantially completely cured, whereupon the sheet of flexible film is removed from the surface of the binder.Type: GrantFiled: October 20, 1980Date of Patent: May 10, 1983Assignee: Sheldahl, Inc.Inventors: Sidney J. Roberts, Deanna M. Dowdle
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Patent number: 4368253Abstract: A method for forming an image by a positive resist process comprises:(1) exposing imagewise to actinic radiation a photoresist composition comprising:(a) a film-forming organic material having at least one substituted benzoin group of formula: ##STR1## where R.sup.1 denotes a hydrogen atom, an alkyl, cycloalkyl, cycloalkylalkyl, or aralkyl group or a group --(CH.sub.2).sub.b X; R.sup.2 denotes a hydrogen atom or an alkyl, cycloalkyl, cycloalkylalkyl, aryl or aralkyl group; R.sup.3 denotes a halogen atom or an alkyl, alkoxy, cycloalkyl, cycloalkylalkyl or phenyl group; X denotes a halogen atom, an alkoxy group, a phenoxy group, a group --COOR.sup.4 or a group --OOCR.sup.4, where R.sup.Type: GrantFiled: January 19, 1982Date of Patent: January 11, 1983Assignee: Ciba-Geigy CorporationInventors: George E. Green, John S. Waterhouse
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Patent number: 4361640Abstract: Compatible, aqueous developable photopolymerizable composition consisting essentially of (a) 22 to 32% by wt. of a monomeric compound having at least two terminal ethylenic groups, (b) 0.1 to 5.0% by wt of a photoinitiator or initiator system, (c) 40 to 80% by wt of a binder system which is the reaction product of (1) 65 to 87 parts by wt of a terpolymer of methylmethacrylate, butylmethacrylate and methacrylic acid as defined, (2) 5 to 20 parts by wt of a polyamide resin and (3) 5 to 20 parts by wt of a copolymer of vinyl pyrrolidone and vinyl acetate, (d) 0.03 to 0.10% by wt of a thermal polymerization inhibitor, and optionally up to 18% by wt of a plasticizer and up to 2.0% by wt of a tertiary amine capable of salt formation with a carboxylic acid. Aqueous developable photopolymerizable elements comprise a support bearing a layer of the composition. Relief printing plates can be prepared by imagewise exposing and developing the elements.Type: GrantFiled: October 2, 1981Date of Patent: November 30, 1982Assignee: E. I. Du Pont de Nemours and CompanyInventor: Herbert J. Pine
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Patent number: 4353980Abstract: An improved abrasion and scratch resistance and resistance to chemicals of photographic materials is achieved by applying a coating composition comprising an irradiation-hardening binder, a multifunctional acrylic monomer, optionally a diiso- or polyisocyanate and a photoinitiator to the photographic material and subsequently irradiating the coating composition with light from the ultra-violet region of the spectrum.Type: GrantFiled: November 25, 1980Date of Patent: October 12, 1982Assignee: AGFA-Gevaert AGInventors: Gunter Helling, Karl Fuhr
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Patent number: 4340686Abstract: Flexographic printing plates are prepared from photosensitive elastomeric compositions which comprise(1) about 15 to about 89 percent by weight of a carbamated poly(vinyl alcohol) polymeric binder,(2) about 10 to about 70 percent by weight of a compatible monomer, and(3) about 0.1 to about 10 percent by weight of a free-radical generating system.Type: GrantFiled: January 13, 1981Date of Patent: July 20, 1982Assignee: E. I. Du Pont de Nemours and CompanyInventor: Robert P. Foss
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Patent number: 4337307Abstract: A light-sensitive composition for the preparation of printing plates and photoresists is described, which comprises as the light-sensitive compound a diazonium salt polycondensation product and as the binding agent a branched polyurethane resin which contains no terminal isocyanate groups and the terminal units of which are at least partially derived from dihydroxy compounds. The printing plates produced with this light-sensitive composition are easily developable with aqueous developer solutions and yield long press runs.Type: GrantFiled: November 28, 1980Date of Patent: June 29, 1982Assignee: Hoechst AktiengesellschaftInventor: Rudolf Neubauer
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Patent number: 4333998Abstract: Radiation-curable compositions useful for restorative and/or protective treatment of photographic elements are comprised of an acrylated urethane, an aliphatic ethylenically-unsaturated carboxylic acid, a multifunctional acrylate, and a siloxy-containing polycarbinol. Photographic elements, such as still films, motion picture films, paper prints, microfiche, and the like, are provided with a protective overcoat layer which is permanently bonded to the element, and serves to protect it from abrasion and scratches, by coating the element with the radiation-curable composition and irradiating the coating to bond it to the element and cure it to form a transparent, flexible, scratch-resistant, cross-linked polymeric layer. The protective overcoat layer can be applied to the image-bearing side of the element or to the support side of the element or to both sides.Type: GrantFiled: November 24, 1980Date of Patent: June 8, 1982Assignee: Eastman Kodak CompanyInventor: Gerald M. Leszyk
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Patent number: 4311785Abstract: The invention relates to a method for the preparation of highly heat-resistant relief structures on the basis of polyimides, polyisoindoloquinazoline diones, polyoxazine diones and polyquinazoline diones by applying radiation-sensitive soluble polymer precursor stages to a substrate in the form of a film or a foil; irradiating the film or the foil through negative patterns with actinic light or by deflecting a light, electron or ion beam; removing the non-irradiated film or foil portions and optionally, by subsequent annealing; as well as the use of relief structures so prepared. It is an object of the invention to simplify the preparation of relief structures of the type mentioned.Type: GrantFiled: August 19, 1980Date of Patent: January 19, 1982Assignee: Siemens AktiengesellschaftInventors: Hellmut Ahne, Eberhard Kuhn, Roland Rubner, Erwin Schmidt
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Patent number: 4293635Abstract: A photosensitive composition having reduced cold flow comprising (a) addition polymerizable ethylenically unsaturated monomer, (b) an initiating system activatable by actinic radiation, and (c) an organic polymeric binder containing at least two percent by weight, basis binder, of an amphoteric interpolymer.Type: GrantFiled: May 27, 1980Date of Patent: October 6, 1981Assignee: E. I. Du Pont de Nemours and CompanyInventors: William L. Flint, Yvan P. Pilette
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Patent number: 4289838Abstract: Improved compositions comprising solvent-soluble, negative-acting or positive-acting light-sensitive diazonium compounds and solvent-soluble unsaturated monomers which are the products of about two equivalents of an organic diisocyanate with about one equivalent of an active hydrogen-containing organic compound, e.g., an alcohol or amine, preferably a polyol, which products are subsequently reacted with an unsaturated compound which contains an active-hydrogen, preferably in a hydroxyl group, available to react with the remaining isocyanate groups. The compositions can be coated onto suitable base sheet materials to form presensitized lithographic printing plates, proofs for multi-color printing, visual aids, printed circuits and the like.Type: GrantFiled: August 13, 1980Date of Patent: September 15, 1981Assignee: Polychrome CorporationInventors: William Rowe, Eugene Golda
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Patent number: 4269930Abstract: A photopolymerizable composition of matter useful for photopolymeric printing surfaces is disclosed. Printing surfaces prepared from the composition are strong and wear well, resist solvents and abrasives, and are suitable for intaglio or gravure printing.Type: GrantFiled: November 13, 1979Date of Patent: May 26, 1981Assignee: Matrix Unlimited, Inc.Inventor: David R. Kress
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Patent number: 4262082Abstract: A positive electron beam resist lacquer binder which comprises polymerized or copolymerized units of: (A) 0 to 95 mol-% of at least one alkyl ester of methacrylic acid having from 1 to 20 carbon atoms in the alkyl moiety; (B) 5 to 100 mol-% of at least one monomer corresponding to Formula (I) ##STR1## wherein n is zero or one and one of the groups, X and Y is always a hydrogen atom and X or Y denotes a phenyl or naphthyl group substituted by at least one halogen atom, or a phenyl or naphthyl group substituted by at least one alkyl group having from 1 to 8 carbon atoms, alkoxy group having from 1 to 8 carbon atoms, carboxyl group, cyano group, carboxyalkyl group having from 1 to 4 carbon atoms in the alkyl moiety, or alkylcarbonyl group having from 1 to 8 carbon atoms in the alkyl moiety, provided that when n is one, at least one of X or Y is a hydrogen atom and the other of X or Y; if not a hydrogen atom, is as hereinbefore defined or a halogenoalkylcarbonyl group having from 1 to 4 carbon atoms in the alkylType: GrantFiled: September 7, 1979Date of Patent: April 14, 1981Assignee: Bayer AktiengesellschaftInventor: Hans J. Rosenkranz
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Patent number: 4248958Abstract: 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.Type: GrantFiled: May 23, 1979Date of Patent: February 3, 1981Assignee: Hoechst AktiengesellschaftInventor: Raimund J. Faust
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Patent number: 4247616Abstract: A positive-acting light-sensitive composition having excellent utility as a photoresist, comprising: (a) a crosslinked urethane resin formed by a catalyzed crosslinking of a non-heat reactive novalac phenolic resin and a polyisocyanate compound; (b) an epoxy resin having an epoxide equivalent weight of less than about 400 and a curing agent therefor; and (c) a positive-acting photosensitizer.Upon applying to a substrate and drying, the epoxy resin cures, resulting in a film useful as a photoresist or in the formation of lithographic printing plates.Type: GrantFiled: July 27, 1979Date of Patent: January 27, 1981Assignee: Minnesota Mining and Manufacturing CompanyInventors: John P. Vikesland, Richard M. Presley
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Patent number: 4247624Abstract: Flexographic printing plates are prepared from photosensitive elastomeric compositions which comprise(1) about 15 to about 89 percent by weight of a carbamated poly(vinyl alcohol) polymeric binder,(2) about 10 to about 70 percent by weight of a compatible monomer, and(3) about 0.1 to about 10 percent by weight of a free-radical generating system.Type: GrantFiled: May 29, 1979Date of Patent: January 27, 1981Assignee: E. I. Du Pont de Nemours and CompanyInventor: Robert P. Foss
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Patent number: 4243743Abstract: This invention relates to a photosensitive composition comprising a precursor of a heat resistant polymer having carboxylic groups and a compound having a photosensitive olefinic double bond and an amino or quaternary ammonium salt. The photosensitive composition can give highly heat resistant relief patterns with good edge sharpness, good mechanical and chemical properties as well as good insulating properties. The heat resistant relief patterns obtained from the composition of this invention are especially useful as insulating, passivation or protective coatings in semiconductor devices.Type: GrantFiled: April 11, 1979Date of Patent: January 6, 1981Assignee: Toray Industries, Inc.Inventors: Hiroo Hiramoto, Masuichi Eguchi
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Patent number: 4242437Abstract: A photosensitized polyamic acid film comprising polyamic acid and a photoinitiator, which is curable to a polyimide upon exposure to actinic radiation in the absence of externally applied heat.Type: GrantFiled: May 11, 1979Date of Patent: December 30, 1980Assignee: Minnesota Mining and Manufacturing CompanyInventor: Robert R. Rohloff
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Patent number: 4221859Abstract: The subject invention relates to photopolymerizable compositions useful for making plastic printing elements for use in photolithography and other photomechanical processes. The photopolymerizable compositions comprise an aqueous mixture of a water-insoluble resin, a water-soluble binder, a crosslinking agent, and a photopolymerization initiator having an alpha-keto ester linkage. In particular, photopolymerization initiators include oxalic acid, sodium oxalate, potassium oxalate, lithium oxalate and urea oxalate. The printing plates prepared from the compositions herein disclosed have improved ink receptivity, good retention of such ink, receptivity even after long continued use, greater durability and excellent binding qualities.Type: GrantFiled: May 4, 1976Date of Patent: September 9, 1980Assignee: Ball CorporationInventors: Gene O. Fanger, George W. Brutchen