Ppg Industries Ohio, Inc.

Jessica M Williamson

Youssef Moussa

Sean Purdy

Carl Allen Seneker

Claudia Knotts

Anil Kumar

Noel Rawle Vanier

Xiangling Xu

Shan Cheng

Wei Wang

A coating composition comprising a polyester resin binder and a phosphatized polyester. The compositions are useful for coating containers such as food and beverage containers. The compositions have excellent hydrolytic stability upon storage at high temperature. The compositions are formulated to be substantially free of bisphenol A (BPA) and bisphenol A diglycidyl ether (BADGE).

Container coating compositions

The invention includes a composite material for use in a security device including a radiation diffracting component that exhibits a first optical effect and a photochromic component that exhibits a second optical effect. The composite material is particularly suited for use in authenticating articles, such as currency.

Composite crystal colloidal array with photochromic member

A method of printing an image that diffracts radiation is disclosed. The method includes assembling an ordered periodic array of particles on a substrate, wherein the array of particles diffracts radiation in a wavelength band dependent on viewing angle; printing an imaging composition onto a portion of the array in a configuration of an image; shifting the wavelength band of radiation diffracted and changing the refractive index by the printed portion of the array so that the printed portion diffracts radiation at a different wavelength band and reflectivity intensity from a remaining portion of the array; and fixing the printed portion of the array, such that the printed portion of the array diffracts radiation and exhibits the image.

Method of imaging in crystalline colloidal arrays

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Cincinnati, OH, United States of America

Jessica M Williamson