E.i. Dupont De Nemours and Company

Other

Dupont Industrial Biosciences Usa, LLC

Gordon Mark Cohen

Jerald Rice Harrell

Hans J Reich

Robert Louis Dawson

Anilkumar Raghavanpillai

Paul Gregory Bekiarian

Surbhi Mahajan

Changzai Chi

Andrew Edward Feiring

William Brown Farnham

Harry J Spinelli

Lech Wilczek

Gary Delmar Jaycox

Jose Manuel Rodriguez-Parada

Fredrik Nederberg

Paul Douglas Stull

Edward J Deyrup

David John Mitchell

Bhuma Rajagopalan

Gregory Scott Blackman

Carl Brent Douglas

Charles J Brandenburg

Herbert Vernon Bendler

Sampson Chun Fai Lee

Clara Young Lin

Sampson Chun-Fai Lee

Donald Da-Jen Huang

Disclosed herein are compositions and articles made therefrom, the compositions comprising poly(trimethylene-2,5-furandicarboxylate) and one or more of a plasticizer, a neutralized carboxylic acid salt or trisodium phosphate as a nucleating agent, and a copolyester derived from furandicarboxylic acid, 1,3 propanediol and at least one poly(alkylene ether) glycol (PAEG), the copolyester comprising a Furan-PAEG soft segment and a PTF hard segment.

Nucleated crystallization of poly(trimethylene-2,5-furandicarboxylate) (PTF) and articles made therefrom

This invention relates to the use of certain amine promoters in processes for surface-treating colloidal silica nanoparticles with selected aromatic aminosilanes, aromatic aminoalkylsilanes, and secondary and tertiary aliphatic aminosilanes. This process provides surface-modified nanoparticle colloidal silica without causing the silica nanoparticles to gel, agglomerate, or aggregate.

Amine-accelerated process for the surface treatment of colloidal silica and products thereof

This invention relates to compositions comprising blends of acrylic add polymers and/or ethylene acrylic add copolymers and colloidal silica modified with certain aromatic aminosilanes, aromatic aminoalkylsilanes, alkenyl aminoalkylsilanes, secondary or tertiary aliphatic aminosilanes. These compositions can provide improved properties such loss modulus, storage modulus, creep resistance, and wear resistance, without sacrificing optical clarity.

Acrylic acid polymer nanocomposites from aminosilane-modified colloidal silica

Novel silane compositions have been prepared by reacting a 3-isocyanatopropyl trialkoxysilane with an alcohol or diol having a divalent alkylene or alkylene-ether group. The alcohol or diol has a formula weight less than about 5000. The compositions can be used to modify the surfaces of inorganic oxygen-containing materials, including but not limited to silica, silicates, borosilicates, aluminosilicates, days, and metal oxides. Surface treatment of silica nanoparticles with these compositions improves their improved dispersion in polyester nanocomposites.

Silane compositions for polyester nanocomposites

Polyester nanocomposite compositions contain silica nanoparticles that have been subjected to surface treatment with novel trialkoxysilane compositions. The novel silane compositions are prepared by reacting a 3-isocyanatopropyl trialkoxysilane with 1,3-propanediol or certain polyether diols. The silica nanoparticles exhibit improved dispersion in the polyester. This leads to haze reduction and improvements in mechanical properties.

Polyester nanocomposites

This invention relates to composite materials for restorative dentistry. More particularly, it relates to new components for dental composites, which impart an attractive combination of good mechanical properties and low shrinkage.

Materials leading to improved dental composites and dental composites made therefrom

Disclosed is a process for crosslinking copolymers of ethylene and acrylic esters by converting some of the ester groups to ester or amide groups which contain unsaturation, and then sulfur or peroxide curing the resulting polymers. The resulting crosslinked polymers often have excellent vulcanizate properties, and are useful especially in elastomeric form as seals and gasket.

Process for crosslinking of ethylene/acrylic ester copolymers

Disclosed is a process for crosslinking copolymers of acrylic esters by converting some of the ester groups to ester or amide groups which contain unsaturation, and then sulfur or peroxide curing the resulting polymers. The resulting crosslinked polymers often have excellent vulcanizate properties, and are useful especially in elastomeric form as seals and gasket.

Process for crosslinking of acrylic ester copolymers

Porous polyolefins are especially efficiently free-radically grafted using (fluorinated alkyl)olefins, vinylsilanes or certain carboxylic acids or their esters as the grafting molecules. The use of a solvent to swell the porous polyolefin is sometimes advantageous.

Grafting of polyolefins

Disclosed are compositions of ethylene and (meth)acrylic acid and ester elastomeric copolymers or of (meth)acrylic ester elastomeric copolymers with polylactones and certain polyethers.

Compositions of elastomeric ethylene/(meth)acrylic (acid) ester copolymer and polylactone or polyether

Silylketene acetals, including 'living' GTP polymers, are acylated or sulfonylated in the presence of GTP-effective catalysts with acyl or sulfonyl compounds to produce .beta.-ketoesters or .beta.-sulfonylesters; polymeric products, including capped, coupled and chain-extended polymers and block copolymers can be prepared.

B-(keto or sulfonyl) esters from reaction of silylketene acetal and acyl

Disclosed are fluorinated macromonomers containing one or more hydroxy groups, which are useful as monomers in other polymerization. Also disclosed are processes and an intermediate for making such macromonomers, and condensation and free radically made polymers which contain the macromonomers. The macromonomers are useful for modifying the properties of the polymers into which they are incorporated.

Fluorinated hydroxy-containing macromonomers

This invention relates to a block copolymer containing one or more blocks of a perfluoroether polymer and one or more blocks of a polymer made from selected hydrocarbon monomers, the blocks being connected by connecting segments, each such segment including a group selected from: ##STR1## wherein X is hydrogen or methyl, and Y is dihydrocarbylamino and hydrocarbyloxy.

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Wynnewood, PA, United States of America

Gordon Mark Cohen