Stanley H Munger DeceasedRumson, NJ

4400459, Aug 23, 1983

May 7, 1982

6/375975

Robert R. Gruetzmacher - Chadds Ford PA
Stanley H. Munger - Rumson NJ
Peter F. Warfield - Westfield NJ

E. I. Du Pont de Nemours and Company - Wilmington DE

G03C 500

430306

Process for providing improved solvent resistant surfaces of relief flexographic printing plates prepared by imagewise exposure and liquid development of the unexposed areas of a layer of a photosensitive elastomeric composition comprising a polymer of a conjugated diolefin hydrocarbon, and a monomeric compound wherein, after drying, the developed surface is in either order (1) postexposed to actinic radiation, and (2) contacted for about 15 seconds to 40 minutes with an aqueous treatment solution of an alkali monopersulfate, e. g. , 2KHSO. sub. 5. KHSO. sub. 4. K. sub. 2 SO. sub. 4 and a bromide salt, e. g. , potassium bromide.

4460675, Jul 17, 1984

Oct 27, 1983

6/546154

Robert R. Gruetzmacher - Chadds Ford PA
Stanley H. Munger - Rumson NJ

E. I. Du Pont de Nemours and Company - Wilmington DE

G03C 500

430300

Process for preparing flexographic photopolymer elements by passing into the nip of a calender a photopolymer composition mass comprising elastomeric binder, monomeric compound, and photoinitiator and calendering the photopolymer composition either between (1) a support and multilayer cover element consisting essentially of a flexible cover film, optionally a flexible polymeric film, e. g. , polyamide, and a layer of elastomeric composition which is photosensitive or becomes photosensitive during or after calendering, or between (2) two supports, one of which is removed prior to contact, e. g. , by lamination or pressing, with the multilayer cover element. The flexographic photopolymer elements are useful for flexographic printing, e. g. , dry-offset, letterpress printing.

4427759, Jan 24, 1984

Jan 21, 1982

6/341250

Robert R. Gruetzmacher - Chadds Ford PA
Stanley H. Munger - Rumson NJ

E. I. Du Pont de Nemours and Company - Wilmington DE

G03C 168

430273

Process for preparing flexographic photopolymer elements by passing into the nip of a calender a photopolymer composition mass comprising elastomeric binder, monomeric compound, and photoinitiator and calendering the photopolymer composition either between (1) a support and multilayer cover element consisting essentially of a flexible cover film, optionally a flexible polymeric film, e. g. , polyamide, and a layer of elastomeric composition which is photosensitive or becomes photosensitive during or after calendering, or between (2) two supports, one of which is removed prior to contact, e. g. , by lamination or pressing, with the multilayer cover element. The flexographic photopolymer elements are useful for flexographic printing, e. g. , dry-offset, letterpress printing.

4210712, Jul 1, 1980

Jun 14, 1978

5/915312

Stanley H. Munger - Rumson NJ
Herbert J. Pine - Edison NJ

E. I. Du Pont de Nemours and Company - Wilmington DE

G03C 194

430275

Adhesive coated metal sheet, e. g. , steel, aluminum, bearing an adhesive layer comprising an ethyl acrylate, methyl methacrylate and acrylic acid copolymer; styrene and maleate ester copolymer, aqueous colloidal silica, and aqueous latex of a self-curing interpolymer. Pigments, e. g. , ferric oxide, and antifoaming compounds can be present in the adhesive layer which is useful in adhering aqueous soluble photopolymerizable layers to the support. The elements formed are useful for printing.

4147551, Apr 3, 1979

Feb 28, 1975

5/554226

Loren T. Finnicum - Newark DE
Stanley H. Munger - Rumson NJ
Donald P. Novak - Eatontown NJ

E. I. Du Pont de Nemours and Company - Wilmington DE

G03C 102

96 94R

A process for preparing a photographic emulsion having a controlled grain size, structure and size distribution, wherein precipitation of first silver halide grains is accomplished in a stream, and partial substitution in the first silver halide grains of a second soluble halide is accomplished in a vessel by halide conversion to form mixed crystal silver halide grains. The initially formed mixed crystal silver halide grains are recycled in the stream wherein additional precipitation of the first silver halide occurs on the surfaces of the mixed crystals, which are enlarged. The enlarged crystals are fed from the recycle stream to a vessel wherein additional substitution by halide conversion is accomplished. Continuous or intermittent recycling of the mixed crystal silver halide grains, control of recycle flow rates, control of addition flow rates of silver salts and soluble halides to the process and control of excess halide concentration in the conversion vessel and recycle stream yields mixed crystal silver halide grains having a controlled grain size, structure and distribution.

4415649, Nov 15, 1983

Jun 3, 1982

6/384558

Stanley H. Munger - Rumson NJ
Michael R. Short - Freehold NJ
David W. Swatton - East Keansburg NJ

E. I. Du Pont de Nemours & Co. - Wilmington DE

G03C 178

430271

Photosensitive flexographic element comprising (A) a flexible support, (B) a photosensitive elastomeric layer comprising (a) butadiene/acrylonitrile copolymer having a no. average molecular weight of 20,000 to 75,000 and optionally up to 15% by weight carboxyl content, (b) ethylenically unsaturated monomer and (c) free radical generating system, and between (A) and (B) an adhesive blend of at least two of the following polymers (1) polyester resin, condensation polymer of ethylene glycol, terephthalic acid, isophthalic acid and azelaic acid, 0 to 78% by weight; (2) polyether polyurethane resin having a Brookfield viscosity of 100-1200, 0 to 78% by weight; (3) a polyamide as defined, 0 to 94% by weight; and (4) a polyamide as defined, 0 to 97% by weight, the weight percentages based on the total weight of resin in the adhesive composition. The element is particularly useful for the preparation of flexographic printing plates processed in aqueous or semiaqueous basic solutions.