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Committee on Paint to Hold Mini-Symposium on Exotic Coatings

ASTM Committee D01 on Paint and Related Coatings, Materials, and Applications is holding a mini-symposium on Exotic Coatings on Tuesday, Jan. 25, 2005, from 4:00 - 6:00 p.m., at the Embassy Suites in Ft. Lauderdale, Fla. The mini-symposium will be held in conjunction with the standards development meetings of Committee D01. There is no cost to attend either the mini-symposium or the standards development meetings.

Exotic coatings are synonymous with special effects, such as sparkle, color change, glitter, and shimmer, whose color appearance changes as a function of viewer-illumination condition. Exotic coatings are driving forces in many markets today, providing manufacturers a vehicle for product differentiation and branding that are applied to products that we use daily. The seminar will be moderated by Jack Ladson, Color Science Consultancy, and chair of Subcommittee E12.02 on Colorimetry and Spectrophotometry, and will consist of two components — the color appearance of exotic coatings and their measurement.

The event will feature three speakers. Russell Ferguson, vice president, global technology, Silberline, a global manufacturer of aluminum effect pigments, and James Carroll, Engelhard, a manufacturer of effect pigments, will each make presentations on the technology, science, and application of these exotic coatings in different mediums. Jack Ladson will conclude the seminar with a review of instrumentation used to measure these special effects. The emphasis of this practical, interactive seminar will be application, with numerous examples.

Color Appearance Abstracts

1. Aluminum pigments have been a key ingredient in the development of metallic and polychromatic coatings for many years. Industry challenges have created the demand for ever-increasing performance and appearance, expanding the portfolio of grades to well over 500 today. This presentation will quickly review the manufacturing process and pigment families available today. Special emphasis will be placed on flake characteristics, their relationship to appearance in the finished coatings, and discussions on new trends and developments in aluminum flake technology. This presentation will be given by Russell Ferguson.

2. Effect pigments are used throughout the cosmetic, plastics and coatings industries to bring added visual interest and/or functionality to materials and surfaces. The appearance of this class of pigments is driven by optical physics and material science. Understanding their optical properties and functionality is key to their effective use in achieving special effects. This presentation will introduce the mechanisms of color generation for effect pigments currently used in industry as well as their physical structures and application considerations. James B. Carroll, Jr. will give this presentation.

Instrumentation Abstract

The measurement of effect coatings is essential in industry, business, and commerce for quality control and formulation purposes. Color measuring systems, usually referred to as goniospectrophotometers, are used to quantify the color appearance of effect coatings. These instruments provide numerical values used to evaluate the quality of effect materials and to generate recipes for materials. The different types of instruments, their features and benefits, and their utilization will be presented. The presenter will be Jack A. Ladson.

Committee D01 meets Jan. 23-26, 2005, in Ft. Lauderdale, Fla. For membership or meeting details information, contact Tim Brooke, ASTM International (phone: 610-832-9729). //

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