Patents by Inventor Udo Dwars

Udo Dwars has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7169534
    Abstract: Radiation-sensitive elements are described whose radiation-sensitive coating comprises both a photopolymerizable oligomer with a biuret structural unit and a photopolymerizable phosphazene oligomer.
    Type: Grant
    Filed: November 28, 2003
    Date of Patent: January 30, 2007
    Assignee: Kodak Polychrome Graphics GmbH
    Inventors: Harald Baumann, Michael Flugel, Udo Dwars, Hans-Horst Glatt
  • Publication number: 20060234155
    Abstract: Radiation-sensitive element comprising: (a) one or more types of monomers each comprising at least one ethylenically unsaturated group accessible to a free-radical polymerization, (b) at least one sensitizer, (c) at least one coinitiator capable of forming free radicals together with the sensitizer (b) and selected from the following classes of compounds: metallocenes; 1,3,5-triazine derivatives with one to three CX3 groups, wherein X represents chlorine or bromine; peroxides; hexaarylbiimidazoles; oxime ethers; oxime esters; N-aryl glycines and derivatives thereof; thiol compounds; N-aryl, S-aryl and O-aryl polycarboxylic acids with at least 2 carboxyl groups of which at least one is bonded to the N, S or O atom of the aryl unit; alkyltriarylborates; benzoin ethers; benzoin esters; trihalogenomethylarylsulfones; amines; N,N-dialkylaminobenzoic acid esters; aromatic sulfonyl halides; trihalogenomethylsulfones; imides; diazosulfonates; 9,10-dihydroanthracene derivatives; a-hydroxy and a-amino acetophenones; an
    Type: Application
    Filed: February 20, 2004
    Publication date: October 19, 2006
    Inventors: Harald Baumann, Udo Dwars, Detlef Pietsch, Michael Flugel
  • Publication number: 20060078819
    Abstract: Radiation-sensitive elements are described whose radiation-sensitive coating comprises both a photopolymerizable oligomer with a biuret structural unit and a photopolymerizable phosphazene oligomer.
    Type: Application
    Filed: November 28, 2003
    Publication date: April 13, 2006
    Applicant: Kodak Polychrome Graphics LLC
    Inventors: Harald Baumann, Michael Flugel, Udo Dwars, Hans-Horst Glatt
  • Publication number: 20060063101
    Abstract: The invention relates to radiation-sensitive elements comprising an aluminum substrate that has been roughened electrochemically with hydrochloric acid, and a radiation-sensitive coating comprising a coumarin sensitizer (I), a coinitiator a free-radical polymerizable monomer one or more P—OH groups and a biuret oligomer.
    Type: Application
    Filed: November 28, 2003
    Publication date: March 23, 2006
    Applicant: Kodak Polychrome Graphics LLC
    Inventors: Harald Baumann, Michael Flugel, Udo Dwars
  • Publication number: 20060051699
    Abstract: Radiation-sensitive element comprising (a) a substrate with at least one hydrophilic surface and (b) a radiation-sensitive coating on at least one hydrophilic surface of the substrate, wherein the coating comprises: (i) at least one free-radical polymerizable monomer and/or oligomer and/or polymer with at least one ethylenically unsaturated group each, (ii) at least one absorber selected from photoinitiators and sensitizers, which is capable of absorbing radiation of a wavelength in the range of 250 to 1,200 nm and (iii) at least one stabilizer comprising in its molecule at least one group capable of inhibiting free-radical polymerization, and at least one other group capable of sorption at the hydrophilic surface of the substrate.
    Type: Application
    Filed: November 28, 2003
    Publication date: March 9, 2006
    Applicant: Kodak Polychrome Graphics LLC
    Inventors: Harald Baumann, Michael Flugel, Udo Dwars, Eduard Kottmair
  • Publication number: 20060024609
    Abstract: A process for the production of lithographic printing plate precursors with a coating comprising a diazo resin is described, wherein a solvent mixture comprising (i) 2 to 9.9 wt.-% 1-methoxy-2-propanol, (ii) 20 to 50 wt.-% of at least one ketone with a boiling point below 130° C., (iii) 20 to 60 wt.-% of at least one alkanol with a boiling point below 120° C., and (iv) 10 to 30 wt.-% ethyl lactate, and a slot coater are used to produce the printing plate precursors.
    Type: Application
    Filed: December 17, 2003
    Publication date: February 2, 2006
    Applicant: Kodak Polychrome Graphics LLC
    Inventors: Udo Dwars, Harald Baumann, Michael Mursal, Axel Draber
  • Patent number: 6808858
    Abstract: The present invention relates to a light-sensitive composition containing: (i) at least one diazonium polycondensation product or at least one system that can be radically polymerized and consists of photoinitiators and unsaturated compounds which can be radically polymerized or at least one hybrid system consisting of a diazonium polycondensation product and a system that can be radically polymerized and consists of photo initiators and unsaturated compounds which can be radically polymerized, (ii) at least one binding agent and optionally one or more exposure indicators, one or more dyes for increasing the image contrast and one or more acids for stabilizing the light-sensitive composition which is characterized in that the binding agent essentially consists of units (A, B, C, D), whereby A corresponds to formula (I), B corresponds to formula (II), C corresponds to formula (III) and D corresponds to formula (IV). The invention also relates to the use thereof for coating printing plates.
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: October 26, 2004
    Assignee: Kodak Polychrome Graphics LLC
    Inventors: Robert Fuss, Harald Baumann, Udo Dwars, Hans-Joachim Timpe
  • Patent number: 6783913
    Abstract: Polymeric acetal resins useful in lithographic printing are disclosed. The polymeric acetal resin contains units (A), (B), (C), (D), and (E). Unit (A) is a vinyl alcohol unit. Unit; (B) is a polyvinyl acetal unit containing an R group, where R is hydrogen, an aliphatic group, an aromatic group, or an arylaliphatic group. Unit (C) is a vinyl carboxylate unit. Unit (D) is an acidic vinyl acetal unit and/or a residue of an acidic vinyl monomer. Unit (E) is a free radical polymerization-inhibiting vinyl acetal unit and/or a free radical polymerization-inhibiting vinyl alcohol ester unit. The resin comprises about 10 to about 60 mol % of unit (A), about 5 to about 60 mol % of unit (B), about 0.3 to about 30 mol % of unit (C), about 1 to about 40 mol % of unit (D), and about 0.01 to about 2 mol % of unit (E).
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: August 31, 2004
    Assignee: Kodak Polychrome Graphics LLC
    Inventors: Hans-Horst Glatt, Udo Dwars, Harald Baumann, Ingrid Glatt
  • Patent number: 6649323
    Abstract: A lithographic printing plate precursor comprises a substrate, a free radical polymerizable photosensitive layer comprising a light-sensitive composition on the substrate, and a water-soluble overcoat layer on the photosensitive layer, wherein the overcoat layer comprises polyvinyl alcohol, and a further component that is not amphoteric and is poly(1-vinylimidazole) or a copolymer of 1-vinylimidazole and at least one further monomer. The photosensitive layer comprises a free radical polymerizable component and a photoinitiator.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: November 18, 2003
    Assignee: Kodak Polychrome Graphics LLC
    Inventors: Socrates Peter Pappas, Harald Baumann, Udo Dwars, Celin M. Savariar-Hauck, Hans-Joachim Timpe
  • Publication number: 20030198887
    Abstract: Polymeric acetal resins useful in lithographic printing are disclosed. The polymeric acetal resin contains units (A), (B), (C), (D), and (E). Unit (A) is a vinyl alcohol unit. Unit; (B) is a polyvinyl acetal unit containing an R group, where R is hydrogen, an aliphatic group, an aromatic group, or an arylaliphatic group. Unit (C) is a vinyl carboxylate unit. Unit (D) is an acidic vinyl acetal unit and/or a residue of an acidic vinyl monomer. Unit (E) is a free radical polymerization-inhibiting vinyl acetal unit and/or a free radical polymerization-inhibiting vinyl alcohol ester unit. The resin comprises about 10 to about 60 mol % of unit (A), about 5 to about 60 mol % of unit (B), about 0.3 to about 30 mol % of unit (C), about 1 to about 40 mol % of unit (D), and about 0.01 to about 2 mol % of unit (E).
    Type: Application
    Filed: April 5, 2002
    Publication date: October 23, 2003
    Inventors: Hans-Horst Glatt, Udo Dwars, Harald Baumann, Ingrid Glatt
  • Publication number: 20030180654
    Abstract: The present invention relates to a light-sensitive composition containing: (i) at least one diazonium polycondensation product or at least one system that can be radically polymerized and consists of photoinitiators and unsaturated compounds which can be radically polymerized or at least one hybrid system consisting of a diazonium polycondensation product and a system that can be radically polymerized and consists of photo initiators and unsaturated compounds which can be radically polymerized, (ii) at least one binding agent and optionally one or more exposure indicators, one or more dyes for increasing the image contrast and one or more acids for stabilizing the light-sensitive composition which is characterized in that the binding agent essentially consists of units (A, B, C, D), whereby A corresponds to formula (I), B corresponds to formula (II), C corresponds to formula (III) and D corresponds to formula (IV). The invention also relates to the use thereof for coating printing plates.
    Type: Application
    Filed: December 10, 2002
    Publication date: September 25, 2003
    Inventors: Robert Fuss, Harald Baumann, Udo Dwars, Hans-Joachim Timpe
  • Patent number: 6420089
    Abstract: The present invention relates to a printing plate precursor with an overcoat, where the printing plate precursor is preferably developable on a printing press after imagewise exposure. The printing plate precursor comprises the following components: (a) at least one polymeric organic binder, soluble in water or in organic solvents having a water content of at least 50 wt.
    Type: Grant
    Filed: May 11, 2000
    Date of Patent: July 16, 2002
    Assignee: Kodak Polychrome Graphics LLC
    Inventors: Harald Baumann, Udo Dwars
  • Publication number: 20020010264
    Abstract: The invention relates to water-soluble layers which in addition to polyvinyl alcohol comprise poly(1-vinylimidazole) or a copolymer of 1-vinylimidazole and at least one further monomer as a further component. These layers can be used as an overcoat on the light-sensitive layer of printing plates.
    Type: Application
    Filed: January 21, 2000
    Publication date: January 24, 2002
    Inventors: Socrates Peter Pappas, Harald Baumann, Udo Dwars, Celin M. Savariar-Hauck, Hans-Joachim Timpe
  • Patent number: 5985996
    Abstract: This invention relates to a binder containing the units A, B, C, D and E, wherein A is present in an amount of 10 to 60 mole % and is of the formula ##STR1## B is present in an amount of 1 to 30 mole % and is of the formula ##STR2## C is present in an amount of 5 to 60 mole % and is of the formula ##STR3## D is present in an amount of 0 to 60 mole % and is of the formula ##STR4## and E is present in an amount of 1 to 40 mole % and is of the formula ##STR5## wherein X is an aliphatic, aromatic or araliphatic spacer group,R.sup.1 is hydrogen or an aliphatic, aromatic or araliphatic group,R.sup.2, R.sup.3 and R.sup.4 are hydrogen or alkyl groups with carbon numbers of from 1 to 18 andY is a saturated or unsaturated chain- or ring-shaped spacer group, and photosensitive compositions containing this binder.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: November 16, 1999
    Assignee: Kodak Polychrome Graphics LLC
    Inventors: Harald Baumann, Udo Dwars, Celin Savariar-Hauck, Hans-Joachim Timpe
  • Patent number: 5925491
    Abstract: Polymeric binders for photosensitive compositions exhibiting improved ink acceptance, good developability and wetting, high photosensitivity, good image resolution, and larger printing runs for plates employing such photosensitive compositions.
    Type: Grant
    Filed: January 9, 1997
    Date of Patent: July 20, 1999
    Assignee: Kodak Polychrome Graphics LLC
    Inventors: Harald Baumann, Udo Dwars, Celin Savariar-Hauck, Hans-Joachim Timpe
  • Patent number: 5849842
    Abstract: Binders useful in photosensitive compositions contain units A, B, C and D, wherein A is present in an amount of 0.5 to 15 wt. % and is of the formula ##STR1## B is present in an amount of 10 to 35 wt. % and is of the formula ##STR2## C is present in an amount of 10 to 50 wt. % and is of the formula ##STR3## wherein R.sup.1 is methyl, ethyl, propyl, and D is present in an amount of 25 to 70 wt. % and is of the formula ##STR4## wherein n is an integer of from 1 to 3 and R.sup.2, R.sup.3 are hydrogen or methyl and R.sup.4 is alkyl, aralkyl or aryl.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: December 15, 1998
    Assignee: Kodak Polychrome Graphics, LLC
    Inventors: Hans-Joachim Timpe, Udo Dwars, Harald Baumann, Celin Savariar-Hauck
  • Patent number: 5700619
    Abstract: This invention relates to a binder containing the units A, B, C, D and E, wherein A is present in an amount of 10 to 60 mole % and is of the formula ##STR1## B is present in an amount of 1 to 30 mole % and is of the formula ##STR2## C is present in an amount of 5 to 60 mole % and is of the formula ##STR3## D is present in an amount of 0 to 60 mole % and is of the formula ##STR4## E is present in an amount of 1 to 40 mole % and is of the formula ##STR5## wherein X is an aliphatic, aromatic or araliphatic spacer group,R.sup.1 is hydrogen or an aliphatic, aromatic or araliphatic group,R.sup.2, R.sup.3 and R.sup.4 are hydrogen or alkyl groups with carbon numbers of from 1 to 18 andY is a saturated or unsaturated chain- or ring-shaped spacer group,and photosensitive compositions containing this binder.
    Type: Grant
    Filed: July 3, 1996
    Date of Patent: December 23, 1997
    Assignee: Sun Chemical Corporation
    Inventors: Harald Baumann, Udo Dwars, Celin Savariar-Hauck, Hans-Joachim Timpe
  • Patent number: 5698360
    Abstract: The present invention relates to binders and photosensitive compositions comprising said binders. The binder comprises units A, B, C and D, wherein A is present in an amount of 0.5 to 15 wt. % and is of the formula ##STR1## B is present in an amount of 10 to 35 wt. % and is of the formula ##STR2## C is present in an amount of 10 to 50 wt. % and is of the formula ##STR3## wherein R.sup.1 is methyl, ethyl, propyl or isopropyl, and D is present in an amount of 25 to 70 wt. % and is of the formula ##STR4## wherein n is an integer of from 1 to 3 andR.sup.2, R.sup.3 are hydrogen or methyl andR.sup.4 is alkyl, aralkyl or aryl.
    Type: Grant
    Filed: July 10, 1996
    Date of Patent: December 16, 1997
    Assignee: Sun Chemical Corporation
    Inventors: Hans-Joachim Timpe, Udo Dwars, Harald Baumann, Celin Savariar-Hauck
  • Patent number: 5695905
    Abstract: A photosensitive composition having a photoreactive component, selected from a diazonium polycondensation product or a free radical polymerizable system of photoinitiators and unsaturated compounds or a hybrid system and a binder formed by reacting a carboxyl group containing a polymer of formulaP--(--X--COOH).sub.n (I),wherein P is a polymer, n is an integer and X is a single bond or a spacer group, with a 2-oxazoline of the formula ##STR1## wherein R is an alkyl-, aryl-, aralkyl-, alkoxy-, aryloxy- or aralkyloxy group and R' and R" are independently a hydrogen, alkyl- or aryl groups.
    Type: Grant
    Filed: May 17, 1996
    Date of Patent: December 9, 1997
    Assignee: Sun Chemical Corporation
    Inventors: Celin M. Savariar-Hauck, Harald Baumann, Hans-Joachim Timpe, Udo Dwars