E.i. Dupont De Nemours and Company

Robert B Fish, Jr

Steven Alan Mestemacher

Rolando Umali Pagilagan

James Michael McKenna

Robert Lee Rackley

Raymond F Tietz

Marvin M Martens

Francis G Gallagher

Robert K Anderson

Vinodkumar Mehra

Win-Chung Lee

Michael H Mainz

Adam J Van Der Lelij

Heinrich F Maurer

A siphon tube having a polymeric material into which at least one continuous reinforcing agent is embedded, and wherein the at least one reinforcing agent runs substantially the length of the siphon tube. The polymer material can be one or more polymers selected from one or more high density polyethylenes, one or more polyamides, and one or more fluoropolymers.

Reinforced polymeric siphon tubes

Marine umbilicals are provided comprising polyamide compositions having good hydrolysis resistance and that may optionally contain plasticizer.

Marine umbilical comprising hydrolysis resistant polyamides

A process for producing plasticized polyamide blends containing additives such as tougheners, reinforcing agents, and/or filler. High average molecular weight plasticized blends containing additives may be made using the process of the invention. Pipes and tubing may be made from the blends prepared using the process of the invention.

Process for efficiently producing highly plasticized polyamide blends

Polyamide compositions and blends toughened with polyvinylbutyral and containing glass fiber are disclosed, together with articles of manufacture. These materials may also contain non-reactive polymers and antioxidants.

Toughened, glass filled polyamide compositions and blends having improved stiffness, and articles made therefrom

This invention relates to a process for making laminar articles by blending multicomponent pellets of a heterogeneous blend of a barrier resin, typically a condensation polymer, and a compatibilizer with a polyolefin. The pellets advantageously prevent segregation of the barrier resin and the compatibilizer during processing. This provides uniform, reproducible laminar articles with improved barrier properties and mechanical properties. The articles exhibit good fluid barrier and mechanical properties.

Process for making laminar articles

An improved process for preparing thermoplastic polymer blends which contain at least 50% by weight of polyamide as a principal component with the remainder consisting essentially of an ionic polymer component which is derived from an olefin/acid copolymer in which the polyamide and the ionic polymer are combined into a uniform mixture via melt blending at high shear, and the improvement comprises simultaneously contacting the mixture while in the melt with one or more neutralizing basic metal compounds in an amount sufficient to neutralize from 100% up to 200% of the acid groups present in the ionic polymer component.

Process for preparing blends of polyamide and ionic copolymers

Novel fishing lines, and related products, especially monofilamentary products, of polyesters that are biodegradable and disintegrate, when immersed over a period of weeks or months in water, to avoid residues thereof obstructing the aqueous environment, but are storage-stable, i.e.. do not disintegrate while being stored in air, before such lengthy immersion.

Fishing lines and related products

An improved process comprising treating monofilaments with high temperatures to deorient the surface. A preferred product is a heavy denier transparent polyamide monofilament, especially suitable as fishing line.

Growing community of inventors

Parkersburg, WV, United States of America

Robert B Fish, Jr