E.i. Dupont De Nemours and Company

The Chemours Company Tt, LLC

The Chemours Company Fc, LLC

Philipp Martin Niedenzu

Peter Jernakoff

Michael Patrick Milone

Cheryl Marie Stancik

Charles David Musick

Narayanan Sankara Subramanian

Patricia Ann Tooley

Austin Henry Reid, Jr

Kevin J Leary

Divya Chopra

Stephen Claude De La Veaux

John Nicholas Birmingham

Scott Matthew Herkimer

Laura Faye McClure

Denise Conner

Yunghsing Samson Hsu

Ronald L Chaney

John Darrel Walker

J Don Connolly, Jr

The present invention is based on a surprising discovery of new packaging materials used to package substances, such as foods, preventing the photo-oxidation of entities found in these substances. Specifically, these new packaging materials include a mixture of polymer resins having novel and specific ratios of filler, preferably calcium carbonate, and titanium dioxide resulting in the material having unexpected properties.

Materials with enhanced protection of light sensitive entities

Methods and apparatus for quantification of photoprotective performance of packaging concepts in an accelerated timeframe are disclosed. In certain embodiments, the apparatus includes a light source which provides a light beam that impinges upon a photoprotective material before being transmitted to a sample cell of a photosensitive entity, such as a photosensitive nutrient. In certain embodiments, the apparatus and methods can be used to generate models for the prediction of photoprotective performance values of untested materials based upon some other known qualitative or quantitative property.

Methods for producing new packaging designs based on photoprotective materials

This invention provides methods and apparatus for quantification of photoprotective performance of packaging concepts in an accelerated timeframe. In certain embodiments, the apparatus comprises a light source which provides a light beam that impinges upon a photoprotective material before being transmitted to a sample cell comprising a photosensitive entity, such as a photosensitive nutrient. In certain embodiments, the apparatus and methods can be used to generate models for the prediction of photoprotective performance values of untested materials based upon some other known qualitative or quantitative property.

Devices for determining photoprotective materials

One aspect of the invention is to provide a composition comprising a titanium dioxide particle having on the surface of said particle a substantially encapsulating layer comprising a pyrogenically-deposited metal oxide; said substantially encapsulating layer having on its surface at least one organic surface treatment material selected from an organo-silane, an organo-siloxane, a fluoro-silane, an organo-phosphonate, an organo-acid phosphate, an organo-pyrophosphate, an organo-polyphosphate, an organo-metaphosphate, an organo-phosphinate, an organo-sulfonic compound, a hydrocarbon-based carboxylic acid, an associated ester of a hydrocarbon-based carboxylic acid, a derivative of a hydrocarbon-based carboxylic acid, a hydrocarbon-based amide, a low molecular weight hydrocarbon wax, a low molecular weight polyolefin, a co-polymer of a low molecular weight polyolefin, a hydrocarbon-based polyol, a derivative of a hydrocarbon-based polyol, an alkanolamine, a derivative of an alkanolamine, an organic dispersing agent, or a mixture thereof. Another aspect of the invention is to provide processes for producing said composition.

Preparation of organic additive-treated, pyrogenic silica-encapsulated titanium dioxide particles

Titanium dioxide pigment particles with treatment of an organosilicon compound and boric acid and/or boron oxide is disclosed. The product has a greater resistance to becoming discolored upon exposure to ultraviolet light when incorporated in polymers, particularly polyolefins such as polyethylene.

Silanized titanium dioxide pigments resistant to discoloration when

Organosilicon treatment of TiO.sub.2 particles coated with alumina or alumina-silica having a fluoride compound or fluoride ions associated with them is disclosed to improve properties such as photostability and humidity resistance when incorporated in powder coatings and/or plastics.

Organosilicon treatment of TiO.sub.2 pigment bearing a coating with

Disclosed is an improved process for preparing a silanized TiO.sub.2 pigment by media milling.

Process for preparing silanized TiO.sub.2 pigments using a media mill

Growing community of inventors

Wilmington, DE, United States of America

Philipp Martin Niedenzu