E.i. Dupont De Nemours and Company

Joel M Pollino

Joachim C Ritter

Neville Everton Drysdale

Kenneth Gene Moloy

Anilkumar Raghavanpillai

Brad Matthew Rosen

Siddhartha Shenoy

Fredrik Nederberg

Surbhi Mahajan

John Russell Crompton, Jr

Jerome P Moraczewski

Simona Percec

Ernest Byron Wysong

Robert John Duff

James J Hughes

Zheng-Zheng Huang

Libby Xiaowei Hu

Surbhi Mahajan Du

Ernest Bryon Wysong

John Russell Crompton

John Russell Crompton Jr

A method for accelerating the curing of a polyarylene sulfide. The polyarylene sulfide is blended with a cure accelerator to form a mixture where the weight percentage of accelerator is between 0.2% and 15.0% of the total weight of the blend. The mixture is cured at 320&#xb0; C. or above for at least 20 minutes. The cure accelerator is a compound selected from the group consisting of ionomers, hindered phenols, polyhydric alcohols, polycarboxylates, and mixtures of the foregoing.

Cure acceleration of polymeric structures

Provided are methods for obtaining modified polyarylene sulfide compositions having improved thermal and thermo-oxidative stability, the compositions so obtained, and articles comprising the compositions. The method comprises the steps of contacting, in the presence of a suitable solvent, a polyarylene sulfide with at least one reducing agent and at least base to form a first mixture. The reducing agent comprises zinc(0), tin(0), tin(II), bismuth (0), bismuth(III), or a combination thereof. The first mixture is heated to form a second mixture in which the polyarylene sulfide is dissolved. The polyarylene sulfide is then precipitated to obtain a modified polyarylene sulfide.

Solution phase processing of polyarylene sulfide

A stain resistant, oil and water repellent composition comprising a copolymer prepared from fluorinated methacrylate, carbonate methacrylate, and methacrylic acid or salt thereof, a method of providing stain resistance, oil and water repellency to substrates, and a treated substrate.

Fluorinated copolymers

A stain resistant, oil and water repellent copolymer comprising a copolymer prepared from fluorinated (meth)acrylate and amine salts of (meth)acrylic acid, and a method of providing stain resistance, oil and water repellency to substrates and a treated substrate.

Fluorinated copolymers of (meth)acrylates and (meth)acrylic acid amine complexes

New fluorinated ethers of aromatic acids and diesters are disclosed. These compositions can be applied to, e.g., fibers, yarns, carpets, garments, films, molded parts, paper and cardboard, stone, and tile to impart soil, water and oil resistance. By incorporating the fluorinated ethers of aromatic acids, or diesters thereof, into polymer backbones, more lasting soil, water and oil resistance, as well as improved flame retardance, can be achieved.

Process for the synthesis of fluorinated ethers of aromatic acids

A method to provide acid etch resistance to contacting a calcareous substrate with a copolymer prepared from fluorinated methacrylate, short chain branched (meth)acrylate, and (meth)acrylic acid salt and a treated substrate.

Acid etch resistance for calcareous substrates

A process for producing copolymers of (meth)acrylates:(meth)acrylic acid amine complexes useful for hard surfaces having increased performance for stain resistance, oil and water repellency properties.

Process for producing fluorinated copolymers of (meth)acrylates and (meth)acrylic acid amine complexes

Provided are films made from copolyesters having improved oil repellency as compared to conventional copolyesters. The copolyesters are derived from certain perfluorinated monomers.

Polyester films with improved oil repellency

Disclosed are fluorovinyl ether functionalized aromatic diesters and derivatives thereof. The compounds disclosed have utility as functionalized monomers and comonomers in polyesters, polyamides, and the like. It has been found that incorporation of the monomers into polymers provides improved soil resistance to shaped articles produced from the polymers.

Fluorovinyl ether functionalized aromatic diesters, derivatives thereof, and process for the preparation thereof

Disclosed are electrochromic materials containing a film-forming polymer with a Tless than 100&#xb0; C.; a plasticizer; an electrochromophore; an electron mediator; and a salt. Also disclosed are electrochromic devices using such electrochromic materials that can provide light-filtering, color-modulation, or reflectance-modulation in variable transmittance windows, variable-reflectance mirrors and other dynamic glazing applications.

Thermoplastic electrochromic materials

Disclosed are polyesters, particularly poly(trimethylene terephthalate), comprising fluorovinylether functionalized aromatic repeat units, and methods to make the polyester polymers. The polymers are useful for imparting soil resistance to polyesters, particularly in the form of fibers, fabrics, and carpets.

Polyesters comprising fluorovinylether functionalized aromatic moieties

Polyoxymethylene compositions that include 90 to 99.9 weight percent of at least one polyacetal polymer and 0.1 to 10 wt % of at least one polysaccharide substantially free of acidic material selected from the group consisting of amylopectin from maize and soluble starch where the weight percent of the polymer and the polysaccharide are based on their combined weight. Articles made from these compositions.

Polyoxymethylene compositions and articles made from these

Polyacetal compositions comprising polyacetal, electroconductive carbon black, and substituted urea provide a combination of good static dissipation properties, good thermal stability during processing, and good stability to contact with fuel.

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Elkton, MD, United States of America

Joel M Pollino