Equistar Chemicals, LP

Shell Oil Comapny

Basell Poliolefine Italia S.r.l.

Anthony J De Nicola, Jr

Chun D Lee

Charles S Holland

James R Beren

Vu Anh Dang

Dinshong Dong

Sameer D Mehta

James P Bell

Richard J Fezza

Ronald F Becker

Theodore Dziemianowicz

Jeffrey D Abata

A process of extruding a blend of an irradiated first propylene polymer and a non-irradiated second propylene polymer, where the first propylene polymer comprises a non-phenolic stabilizer. The irradiation of the first propylene polymer extrudate is conducted in a reduced oxygen environment, and the irradiated first propylene polymer and the non-irradiated second propylene polymer are blended at a temperature below their respective melting points. The blend has a viscosity retention of 20 to 35%.

Controlled rheology formulations containing high melt strength polypropylene for extrusion coating

The present invention relates to a process comprising extruding a blend of an first propylene polymer comprising a non-phenolic stabilizer and a non-irradiated second propylene polymer, wherein the irradiation of the first propylene polymer was conducted in a reduced oxygen environment, and the irradiated first propylene polymer and the non-irradiated second propylene polymer were blended at a temperature below the melting point of the first and second propylene polymers.

Extrusion processes using high melt strength polypropylene

The present subject matter relates generally to polymer compositions, and more particularly to irradiated polymer compositions comprising at least one non-phenolic stabilizer. The present polymer compositions comprise an unexpected balance of properties after being subjected to irradiation treatments, including an unexpected combination of a lower melt flow rate ratio (MFR) and high melt tension after being irradiated, while minimizing negative yellowing effects.

Irradiated polyolefin composition comprising a non-phenolic stabilizer

A process of extruding a blend of an irradiated extrudate of a first propylene polymer and a non-irradiated second propylene polymer, where the first propylene polymer comprises a non-phenolic stabilizer. The irradiation of the first propylene polymer extrudate is conducted in a reduced oxygen environment, and the irradiated extrudate of the first propylene polymer and the non-irradiated second propylene polymer are blended at a temperature below their respective melting points. The blend has an ARPSW of &#x2266;3.0 micron.

Co-continuous heterophase polymer compositions containing high melt strength polypropylene for extrusion coating

The present invention is directed to a method for improving the adhesion of epoxy resins to steel substrates which comprises first removing the oxide surface layer, preferably by chemical means, and then pretreating the substrate with a solution of at least one coupling agent selected from the group consisting of .beta.-diketones and mercaptoesters. The invention also provides a method for improving the adhesion of epoxy resins to steel substrates by pretreating with citric acid or a salt thereof.

Process for improving steel-epoxy adhesion

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Newark, DE, United States of America

Anthony J De Nicola, Jr