Gabor I Koletar

20030166750, Sep 4, 2003

Jan 10, 2003

10/341090

Gabor Koletar - Berkeley Heights NJ, US
Major Dhillon - Belle Mead NJ, US
Mahfuzul Alam - Bridgewater NJ, US
Gerhard Sprintschnik - Branchburg NJ, US
Stanley Wanat - Scotch Plains NJ, US

C08K005/15

524/113000, 524/111000, 524/376000

A method for producing polymers which are anhydride modifications of polymers containing hydroxyl groups, such as polyvinyl acetal polymers. Such modified polymers are useful as binders for photosensitive compositions used to prepare photographic elements such as lithographic printing plates, color proofing films and photoresists. The binder is the reaction product of an intramolecular anhydride of an organic polycarboxylic acid with a polymer containing hydroxyl groups, and which does not contain other functional groups which are capable of reaction with acid anhydrides. The reaction is conducted in a solvent composition free of hydroxyl containing solvents such as methyl ethyl ketone and ethylene glycol monomethyl ether.

46651241, May 12, 1987

Oct 14, 1986

6/918734

John E. Walls - Hampton NJ
Major S. Dhillon - Belle Mead NJ
Gabor I. Koletar - Berkeley Heights NJ

American Hoechst Corporation - Somerville NJ

C08F 800

525 61

This invention relates to a resin having the general formula --A--B--C-- wherein a plurality of each of components A, B and C occur in ordered or random sequence in the resin and wherein A is present in said resin at about 5% to about 20% by weight and comprises groups of the formula ##STR1## B is present in said resin at about 4% to about 30% by weight and comprises groups of the formula ##STR2## and C is present in said resin at about 50% to about 91% by weight and comprises acetal groups consisting of groups of the formulae ##STR3## where R is lower alkyl or hydrogen, and wherein said group I is present in component C from about 75% to about 85%; group II is present in component C from about 3% to about 5%; and group III is present in component C from about 10% to about 22%.

49486934, Aug 14, 1990

Aug 29, 1988

7/237864

Richard L. Shadrach - Belle Mead NJ
Stephan J. W. Platzer - Califon NJ
Gabor I. Koletar - Berkeley Heights NJ

Hoechst Celanese Corporation - Somerville NJ

G03C 720
G03C 1112
G03C 518

430143

This invention relates to positive working photosensitized sheet constructions which, upon exposure to an actinic radiation source through a screened image, can accurately reproduce said image. The construction is useful as a color proofing film which can be employed to predict the image quality from a lithographic printing process.

46596429, Apr 21, 1987

Oct 22, 1984

6/663607

Stephan J. W. Platzer - Califon NJ
Gabor I. Koletar - Berkeley Heights NJ
Richard L. Shadrach - Belle Mead NJ

American Hoechst Corporation - Somerville NJ

G03G 720
G03G 1112
G03G 518

430143

This invention relates to positive working photosensitized sheet constructions which, upon exposure to an actinic radiation source through a screened image, can accurately reproduce said image. The construction is useful as a color proofing film which can be employed to predict the image quality from a lithographic printing process.

56609680, Aug 26, 1997

May 5, 1995

8/435906

Wojciech A. Wilczak - Jersey City NJ
Gabor I. Koletar - Berkeley Heights NJ

Bayer Corporation - Pittsburgh PA

G03C 300

430253

In the present invention, one produces a negative-acting color proofing element comprising, sequentially: a strippable cover sheet which is transparent to actinic radiation; a crosslinked layer containing a polymer having phenolic groups; a color layer, containing a colorant, a polymeric binder, a polymerizable monomer and, optionally, a photoinitiator; a photoadhering layer, containing a linear photosensitive polymer containing ethylenically unsaturated, free-radical polymerizable groups and having a weight average molecular weight greater than 3,000, a polymerizable monomer, and, optionally, a free radical photoinitiator, a thermoplastic adhesive layer; and a receiver sheet, at least one of the color layer and the photoadhering layer containing a photoinitiator, which is brightener.

56862210, Nov 11, 1997

Dec 27, 1995

8/579658

Gabor I. Koletar - Berkeley Heights NJ

Bayer Corporation - Pittsburgh PA

G03F 734

430254

A negative-acting color proofing method provides a photosensitive element having a cover sheet; release layer having a polymer with phenolic groups; color layer having a binder, polymerizable monomer, colorant, and optional photoinitiator; a photoadhering layer, having a photosensitive polymer having unsaturated, photocrosslinkable groups and a molecular weight greater than about 3,000, a polymerizable monomer having at least one unsaturated group, and an optional photoinitiator. A at least one of the color layer and the photoadhering layer has a photoinitiator; and a first thermoplastic adhesive layer. A photomask is applied onto the thermoplastic adhesive layer and one imagewise exposes the color layer and photoadhering layers to actinic radiation through the photomask. After removing the photomask, the photosensitive element is laminated to a temporary receiver. After peeling apart the temporary receiver and the cover sheet, exposed areas of the color layer attach to the temporary receiver and unexposed areas are removed with the cover sheet thereby forming a colored negative image on the temporary receiver sheet.

43584519, Nov 9, 1982

Jan 15, 1980

6/112238

Gabor I. Koletar - Berkeley Heights NJ
Jonathan R. Frost - Palaiseau, FR
Regis DuPont - Paris, FR
Patrick Lardenois - Bourg la Reine, FR
Claude Morel - Massy, FR
Henry Najer - Paris, FR

Synthelabo - Paris

C07D47114
A61K 31505

424251

Pyrimido- and imidazo-pyridoindole derivatives, in the form of racemates or optically active isomers, of formula: ##STR1## in which n=0 or 1, R. sub. 1 =H, Hal, alkyl or alkoxy or CF. sub. 3, R. sub. 2 =H, alkyl, cycloalkyl-alkyl, cycloalkyl, N,N-dialkylaminoalkyl or phenyl, R. sub. 3 =H or alkyl and R. sub. 4 =H, alkyl or benzyl are useful as anti-anoxia or psychotropic agents in therapy. They are prepared by cyclizing a compound of formula: ##STR2## wherein R. sub. 5 is alkyl, by heating it in an acidic medium, such as ethanolic hydrogen chloride.

46705074, Jun 2, 1987

Aug 2, 1985

6/762089

John E. Walls - Hampton NJ
Major S. Dhillon - Belle Mead NJ
Gabor I. Koletar - Berkeley Heights NJ

American Hoechst Corporation - Somerville NJ

C08F 800

525 61

This invention relates to a resin having the general formula --A--B--C-- wherein a plurality of each of components A, B and C occur in ordered or random sequence in the resin and wherein A is present in said resin at about 5% to about 20% by weight and comprises groups of the formula ##STR1## B is present in said resin at about 4% to about 30% by weight and comprises groups of the formula ##STR2## and C is present in said resin at about 50% to about 91% by weight and comprises acetal groups consisting of groups of the formulae ##STR3## where R is lower alkyl or hydrogen, and wherein said group I is present in component C from about 75% to about 85%; group II is present in component C from about 3% to about 5%; and group III is present in component C from about 10% to about 22%.