Frx Polymers, Inc.

Bayer Materialscience Ag

Elecon, Inc.

Pin Go

Dieter Freitag

Lawino Kagumba

Pieter Ooms

Johann Rechner

Helmut-Werner Heuer

Michael Prein

Stephan Konrad

Marc-Andre Lebel

Youmi Jeong

Berit Krauter

Gad Stahl

John W Connell

The invention relates to the use of polyphosphonates, copoly(phosphonate ester)s, copoly(phosphonate carbonate)s, and their respective oligomers, as flame retardant additives for polyester fibers to impart fire resistance while maintaining or improving processing characteristics for melt spinning fibers.

Phosphonate polymers, copolymers, and their respective oligomers as flame retardants for polyester fibers

Predominately amino terminated phosphonamide oligomers and their use as flame retardant additives in polyamides and copolyamides without detracting from melt processability are described herein. Other important properties such as strength, modulus, dyeing and thermal stability are maintained.

Flame retardant polyamide compositions

Insoluble polyphosphonates produced via a transesterification process, methods for preparing such insoluble polyphosphonates and polymer compositions and articles of manufacture including such insoluble polyphosphonates are described herein.

Insoluble and branched polyphosphonates and methods related thereto

Disclosed are random copoly(phosphonate carbonate)s with the high molecular weight and narrow molecular weight distribution exhibiting a superior combination of properties compared to prior art.

High molecular weight, random, bisphenol based copoly(phosphonate carbonate)s

Disclosed are new compositions consisting of polyphosphonates and specific additive compositions that exhibit superior resistance to degradation due to exposure to air, high temperature and air, moisture or combinations thereof. Also disclosed are polymer mixtures or blends comprising these polyphosphonates/additive compositions and commodity and engineering plastics and articles produced therefrom. Further disclosed are articles of manufacture produced from these materials, such as fibers, films, coated substrates, moldings, foams, fiber-reinforced articles, or any combination thereof.

Compositions comprising polyphosphonates and additives that exhibit an advantageous combination of properties, and methods related thereto

Disclosed are crystalline polyphosphonates and a method to induce crystallization. These crystalline polyphosphonates exhibit a unique and advantageous combination of properties, allowing for solid state post polymerization reactions and solid state dry mixing with other polymers. Also disclosed are polymer compositions that comprise these polyphosphonates and at least one other polymer, wherein the resulting polymer compositions exhibit flame retardant properties. Further disclosed are articles of manufacture produced from these crystalline polyphosphonates and polymer compositions, such as fibers, films, coated substrates, moldings, foams, fiber-reinforced articles, or any combination thereof.

Crystalline polyphosphonates and methods related thereto

Disclosed are mixtures comprising aqueous thiophene/anion dispersions, such as polythiophene/polystyrene sulfonate aqueous dispersions, and additives, as well as coatings produced therefrom. Coatings produced from these mixtures yield significant improvements in electrical conductivity without the need for a high temperature treatment as compared to coatings produced from unmodified aqueous polythiophene dispersions (e.g., Baytron&#xae;P) and to coatings produced from state-of the-art aqueous polythiophene-additive mixtures. These conductivity improvements are achieved without detracting from the optical transparency of the coating. Because characteristics of volume resistivity of less than 6.6 ohm&#xb7;cm and optical transmission greater than 80% are important for conductive coating applications, coatings produced from the mixtures of the present invention have significant advantages over coatings produced from the state-of-the-art mixtures in many applications. Also disclosed are a variety of substrates or articles of manufacture coated with the mixtures of the present invention for use in various applications where a combination of high electrical conductivity, excellent optical transparency and low temperature processing are important, such as electronic and optoelectronic devices.

Mixtures comprising thiophene/anion dispersions and certain additives for producing coatings exhibiting improved conductivity, and methods related thereto

Growing community of inventors

Lowell, MA, United States of America

Pin Go