E.i. Dupont De Nemours and Company

Howard W Jacobson

Thomas Paul Feist

Oswald Robert Bergmann

Jacob Hormadaly

Michael H Scholla

Charles W Goodrich

Robert Valentine Kasowski

Carl Chen

Annie W Wigfall

Joseph V Kurian

Sam Louis Samuels

John Graeme Pepin

Hon-Peng P Lau

Chandrakant Shantilal Shah

Charles Robert Bettler

Scott T Sackinger

Michael R Baloga

Esther K Yang

Andrew A Feng

Max H Lewis

George Leoutsacos Lewis

Low tack dry-spun spandex containing barium sulfate of low isoelectric point is provided.

Spandex containing barium sulfate

A flame retardant composition comprising coated particles, said particles having a core comprising melamine phosphate, melamine polyphosphate, melamine pyrophosphate, or mixtures thereof, said core having at least one coating comprising an organo silane, ester, polyol, dianhydride, dicarboxylic acid, melamine formaldehyde, or mixtures thereof; a polymer composition containing said flame retardant; a polymer composition containing a flame retardant comprising melamine phosphate, melamine polyphosphate, melamine pyrophosphate or mixtures thereof, and dicarboxylic acid, dianhydride, or mixtures thereof; and a process for preparation of said polymer compositions by increasing extruder throughput are disclosed.

Polymer flame retardant

Rutile TiO.sub.2 pigment particles bearing coatings comprising: (a) an inner layer comprising about 0.05-1 percent by weight, based on the weight of the TiO.sub.2, of cerium radicals and about a stoichiometric amount of phosphate radicals, based on the amount of cesium radicals, (b) a second layer of about 0.1-4 percent by weight, based on the weight of the TiO.sub.2, of amorphous silica, and optionally (c) an outer layer of (1) about 0.5 to 8 percent by weight, based on the weight of the TiO.sub.2, of hydrous alumina or (2) hydrous alumina in the amount of about 0.5-8 percent, based on the weight of the TiO.sub.2, and associated therewith up to about a stoichiometric amount of phosphate radicals needed to form aluminum phosphate, the combined total weight of said coatings being about 2 to 12 percent by weight, based on the weight of the TiO.sub.2.

Lightfast T102 pigment

A product and process are disclosed that relate to electroconductive powders based on tantalum, niobium, or phosphorus or any combination thereof doped tin oxide and coatings containing such powders. These powders can be used for making transparent coated films that are conductive and have desirable properties for a number of end uses. Some important end uses are in static dissipative fiber and films, coatings for recyclable containers, materials involved in packaging, where the presence of certain heavy metals is undesirable, transparent conductive coatings, among other uses.

Tin oxide based conductive powders and coatings

A base TiO.sub.2 pigment particles bearing coatings of a boria-modified silica and alumina is disclosed.

Titanium dioxide pigment coated with boria-modified silica and alumina

The disclosure relates broadly to a new class or type of electroconductive powders (ECP), designated as Polytype ECP (PECP), comprising intimate mixtures of several types of ECP powders. PECP mixtures possess a lower electrical resistivity, or a higher electroconductivity, than would be expected from the weighted average of the component ECP powders. PECP are multi-component and may contain many different types of ECP. ECP components of the PECP can be selected from at least one member of the group consisting of crystallites of tin oxide containing antimony in solid solution, crystallites of antimony-containing tin oxide with uniformly distributed amorphous silica, two dimensional networks of crystallites of antimony-containing tin oxide in a unique association with amorphous silica or silica-containing material, filler materials, metal coated powders, conventional ECP materials such as carbon, aluminum powder, among others.

Polytype electroconductive powders

Finely-divided particulate additives for polymers with a surface coating comprised of a compound selected from the group consisting of esters of difunctional C.sub.6 -C.sub.40 aliphatic and aromatic carboxylic acids and triesters of phosphoric acid.

Surface-coated particulate additives for polymers

An antimicrobial composition comprising an inorganic particle with a first coating providing antimicrobial properties and a second coating providing a protective function is disclosed with a method for preparing the same and uses; further processes for producing polymeric articles and a method for controlling microorganisms are also disclosed.

Antimicrobial particles of silver and barium sulfate or zinc oxide

A process for producing crystallites comprising silica and antimony containing tin oxide. The quantity of antimony within the tin oxide can be reduced, thereby permitting production a powder which is absent a blue coloration.

Electroconductive material and process

A product and process are disclosed that relate to electroconductive powders based on tantalum niobium, or phosphorus or any combination thereof doped tin oxide and coatings containing such powders. These powders can be used for making transparent coated films that are conductive and have desirable properties for a number of end uses. Some important end uses are in static dissipative fiber and films, coatings for recyclable containers, materials involved in packaging, where the presence of certain heavy metals is undesirable, transparent conductive coatings, among other uses.

Synthetic organic fibers containing finely divided, inorganic particles that have certain organic polymeric coatings have improved dispersibility within a matrix material and significantly less abrasiveness than do identical fibers containing such particles without any such polymeric coatings.

Growing community of inventors

Wilmington, DE, United States of America

Howard W Jacobson