E.i. Dupont De Nemours and Company

Lawrence C Muschiatti

Paul Clayton Briggs, Jr

I-Hwa Lee

Benjamin Andrew Smillie

Edward J Deyrup

Jerald Rice Harrell

Linda R Bateman

William L Strum

Johan G Hedberg

The present invention relates generally to multi-layer film compositions which can be thermoformed and heat set into clear, transparent articles, having excellent barrier properties. The compositions comprise at least one barrier layer and at least one polyester layer, whereby the polyester layer will quickly crystallize and heat set into an optically clear layer material.

High barrier, coextruded compositions useful in the manufacture of

The present invention relates generally to oriented, crystallized polyester compositions which can be thermoformed and heat set with sheet cycle times. More specifically, the compositions of the present invention comprise specialized alkali metal-containing nucleating agents which provide high crystallization rates.

Polyester compositions having improved optical properties and heat

Blends of branched poly(ethylene terephthalate) ('PET') polymer and recycled plastics can be foamed to produce closed cell structures with advantageous densities, cell sizes, cell size distributions, mechanical properties and thermal properties.

Poly(ethylene terephthalate) foams comprising recycled plastic and

The present invention relates to poly(ethylene terephthalate)('PET') polymer resins having high melt strength and advantageous non-Newtonian behavior; the resins can be foamed to produce closed cell structures with advantageous densities, cell sizes, cell size distributions, mechanical properties and thermal properties. More specifically, the PET resins of the present invention are highly branched due to the inclusion of one or more branching agents, and these resins can be advantageously used with environmentally friendly blowing agents.

High melt strength pet polymers for foam applications and methods

An electrically insulated conductor including an electrically conductive element surrounded by ultramicrocellular foamed polymer insulation having a void volume greater than about 75%, wherein the transmission speed of the insulated conductor is greater than 90% of the speed of light. Such insulated conductors are useful in computer and telecommunications applications.

High speed insulated conductors

An electrically insulated conductor comprising an electrically conductive element surrounded by ultramicrocellular foamed polymer insulation having a void volume greater than about 75%, wherein the transmission speed of the insulated conductor is greater than 90% of the speed of light. Such insulated conductors are useful in computer and telecommunications applications.

Certain ethylene copolymers that contain an ethylene/anhydride graft copolymer and a magnesium hydroxide or aluminum trihydrate flame and smoke retardant have a good balance of strength and flame and smoke retardant properties. The compositions preferably also contain polyethylene, and/or ionomeric ethylene copolymer and/or an ethylene/propylene elastomer.

Ethylene copolymer compositions

A composition comprising 2-3 wt. % carbon black, 25-1000 ppm and preferably 75-250 ppm of a fluoroelastomer and the remainder polyethylene is disclosed. The fluoroelastomer prevents die buildup during extrusion of the composition which is believed to be caused by moisture associated with the carbon black. Alternatively, the die may be conditioned by extruding polyethylene containing 0.5-5 wt. % of the fluoroelastomer and then carbon black containing polyethylene without the fluoroelastomer can be extruded for a substantial period before die buildup begins to occur.

Fluoroelastomer containing polyethylene composition and process for

Adhesive compositions comprising a solution of polymer dissolved in acrylic monomers containing an organic sulfonyl chloride, a polymerization catalyst and an accelerator.

Polymer in monomer adhesive composition and method employing same

Solutions of chlorosulfonated polyethylene or mixtures of sulfonyl chlorides and chlorinated polymers in polymerizable vinyl monomers having a Brookfield viscosity of up to about 1 million form excellent adhesive compositions which cure to high bond strengths. Acrylic monomers are preferred.

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Wilmington, DE, United States of America

Lawrence C Muschiatti