E.i. Dupont De Nemours and Company

Dupont Electronic Polymers LP

Medtronic Ave, Inc.

Actamax Surgical Materials, LLC

Mark Elliot Wagman

Keith Joseph Kunitsky

Michael T Sheehan

Richard A Morgan

William Howard Tuminello

Richard Allen Hayes

James R Sounik

Helen S M Lu

Charles W Stewart, Sr

Steven Willis Shuey

Barry M Trost

Leonard E Kosinski

George R Chapman, Jr

Mukesh C Shah

John G Van Alsten

Samuel David Arthur

Michael F Weiser

George Joseph Ostapchenko

Gary L Loomis

Donnan E Priester

Stanley B Levy

Randall Allen Vogel

Robert E Tarney

Rita S McMinn

Carol A Ryan

Gary L Boseck

Lewis E Crenshaw

Samuel J Santosuosso

The invention pertains to a printing form and a process for preparing the printing form from a solvent-free curable composition that includes, in prescribed relative amounts, an epoxy novolac resin; a bisphenol-A epoxy resin or a bisphenol-F epoxy resin; a monofunctional reactive diluent; a multifunctional reactive diluent; and a stoichiometric amount of an amine curing agent. The ratio of the epoxy novolac resin to the bisphenol epoxy resin is 1:3 to 3:1 by weight. The process includes applying the curable composition to a supporting substrate to form a layer, curing the layer at one or more temperatures in a temperature range, and engraving to form at least one cell in the cured layer. The process prepares printing forms, particularly gravure printing forms, having a cured resin composition layer that is engravable, resistant to solvent inks and to mechanical wear, and capable of printing gravure-quality images.

Printing form and process for preparing the printing form with curable composition having solvent-free epoxy resin

A hydrogel tissue adhesive having decreased degradation time is described. The hydrogel tissue adhesive is formed by reacting an oxidized polysaccharide with a water-dispersible, multi-arm polyether amine in the presence of an oligomer additive, which promotes the degradation of the hydrogel. The hydrogel may be useful as a tissue adhesive or sealant for medical applications, such as a hemostat sealant or to prevent undesired tissue-to-tissue adhesions resulting from trauma or surgery.

Hydrogel tissue adhesive having reduced degradation time

A solution grafting method for making polyolefin graft polymers by grafting a phenolic ester monomeric compound on olefinic polymers in the presence of a radical initiator in an organic solvent is described. The grafted polymers provide improved adhesion properties, particularly to metal and polyester substrates.

Method for making polyolefin graft polymers having improved adhesion properties

A process for producing a stable polymer such as poly(hydroxystyrene) which comprises the decarboxylation of a corresponding phenolic in the presence of a non-amine basic catalyst and a polar organic solvent, followed by the polymerization thereof.

Methods for preparing polymers from phenolic materials and compositions relating thereto

A method is provided for the thermal decarboxylation of a phenolic substrate in the presence of a non-amine basic catalyst to produce a vinyl monomer. The product of the decarboxylation reaction may additionally be acetylated in the presence of an acetylating agent in the same reaction vessel.

Method for preparing hydroxystyrenes and acetylated derivatives thereof

The invention discloses a composition consisting essentially of an E/X/M random copolymer wherein X is from 0.1 to 20 mol % of the E/X/M copolymer and is a 4-vinylphenyl ester, preferably 4-acetoxystyrene; M is from 0 to 40 mol % of the E/X/M copolymer and is one or more ethylenically unsaturated monomers; and E is ethylene. The invention further encompasses a high pressure radical polymerization process for providing the novel polymers; and a base catalyzed transesterification process for conversion of the E/X/M copolymer to an E/Y/M copolymer wherein Y is derived from 4-hydroxystyrene. Another embodiment of the invention is a composition consisting essentially of an E/Y/M random copolymer wherein Y is greater than 1.0 to about 20 mol % of the E/Y/M copolymer and is 4-hydroxystyrene; M is from 0 to 40 mol % of the E/Y/M copolymer and is one or more ethylenically unsaturated monomers; and E is ethylene.

Random copolymers of ethylene and 4-vinylphenyl esters and method for preparing the same

It was found that glycidyloxystyrenes, including glycidyloxystyrene and substituted glycidyloxystyrene, can be synthesized from hydroxycinnamic acid or substituted hydroxycinnamic acids in a one-pot, two-step process. The substrate can be thermally decarboxylated and then without purification, reacted in the presence of a halomethyl-oxirane and a base. The resulting product can be polymerized or coppolymerized to a fully substituted product.

Method for preparing glycidyloxystyrene monomers and polymers thereof

A method for preparing p-(2-hydroxyalkyloxy)styrene monomers and oligomers is described. The method comprises a base-catalyzed reaction of a styrene ester, a suitable alcohol and an alkylene oxide in a single vessel reaction. In this method, the reactive p-hydroxystyrene is generated in situ via the base-catalyzed transesterification reaction between the styrene ester and the alcohol in the presence of the base catalyst. The p-hydroxystyrene formed reacts with the alkylene oxide to form the p-(2-hydroxyalkyloxy)styrene monomer or oligomer.

Method for preparing para-(2-hydroxyalkyloxy) styrene monomers and oligomers

Endovascular stents capable of being cut from a flat piece of material are described. The endovascular stents may be bioabsorbable, multilayered and may have structural configurations allowing them to maintain low profiles in vivo. Methods of manufacturing endovascular stents and methods of using endovascular stents are also described.

Endovascular stents

Copolymers of tetrafluoroethylene (TFE) and hexafluoropropylene (HFP) having high HFP content and end-of-melting temperature, T.sub.m (end), as low as 200.degree. C. are disclosed. Exceptional performance as a processing aid in polyolefins results from having T.sub.m (end) of the TFE/HFP copolymer close to the processing temperature of the polyolefin. These TFE/HFP copolymers are soluble in fluorinated cyclic solvents. Copolymer/solvent systems copolymer at significant concentrations in selected solvents are fluid and stable at room temperature.

Low melting tetrafluoroethylene copolymer and its uses

Low-melting tetrafluoroethylene copolymer and its uses

Low-melting tetrafluorethylene copolymer and its uses

Incorporation into polyacetal molding compositions stabilized for processing with a non-meltable polymer stabilizer of 0.01-1.00 weight percent of at least one meltable co-stabilizer, said co-stabilizer being a thermal stabilizer for polyacetal, and 0.02-1.0 weight percent of at least one primary antioxidant results in significantly improved long term stability, as evidenced by greater retention of physical properties over time, of such compositions.

Polyacetal compositions containing a non-meltable polymer stabilizer

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Wilmington, DE, United States of America

Mark Elliot Wagman