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Discover DuPont Capstone™ Fluorosurfactant during the American Coatings Show (April 12th, 4:00 PM in room 213 AB)

Published on 2010-04-05. Author : SpecialChem

The American Coatings Show 2010 will take place from April 12 - 15, Charlotte, NC. The show and the conferences will set the trend for future developments in the paint and coatings industry.

DuPont will be there. You will have a chance to discover the company and its range of Capstone™ fluorosurfactants through conference and poster.

Conference: Novel Application of Fluorosurfactant in Waterborne Wood Coatings - April 12th, 4:00 PM in room 213 AB

By Dr. Jean Meng, DuPont Company

With the increasing need to reduce VOC content in wood coatings, desired performance such as wetting, leveling, foam control and surface repellency of water-borne wood coating are becoming ever challenging tasks for formulators. Overuse of hydrocarbon and silicone based additives can increase surface defects, decrease dirt pick-up resistance, and cause overall formulation complications.

Fluorosurfactants have long been used in low VOC architectural paints as multi-functional additives to provide wetting, leveling, anti-blocking, oil repellency and dirt pick-up resistance properties. In this paper, we will discuss fluorosurfactants use in water-borne wood coatings. The data will show how they can help reduce craters and pin holes to improve coating quality. In addition, fluorosurfactants is cost effective solution to wood coating if used in early. They can simplify formulation by reducing the need of other surfactants, thus minimize the use for defoamer. Fluorosurfactants can also provide surface oil repellency and block resistance, which are directly related to reducing wood coating's film tackiness and improve chemical resistance. Technical data collected in acrylic and polyurethane dispersion (PUD) systems will be discussed in details.

Poster Session - 4/13 and 4/14 5:30 to 7:00 PM in East Prefunction Area 2: A new APEO-free Wetting Agent for Architecture Coating

By Dr. Jean Meng, DuPont Company

Surfactants are used to reduce the surface tension in architecture coatings in order to achieve good pigment wetting for efficient grind as well as substrate wetting for eliminating surface defects. Alkylphenol ethoxylate (APEO) surfactants have a long history for use as wetting agents in the formulation of architecture paints. However, rising concerns regarding their environmental footprint have sidelined these additives and many paint and coating formulations containing these surfactants in Europe, Canada, and the United States.

In past studies, anionic fluorosurfactants were widely recommended in architecture coating as a multifunctional additive to improve anti-blocking resistance, oil repellency, as well as dirt pickup resistance. In this paper, a cost-effective nonionic fluorosurfactant was used as an alternative to APEO surfactants to simplify the formulation and provide excellent substrate wetting, pigment wetting and good formulation stability. The studies show that the nonionic fluorosurfactant can offer numerous benefits to the formulation such as good color acceptance and color development with various colorants, wide compatibility with dispersant and rhelogy modifiers, excellent flow and leveling performance, and oil repellency.

Source: DuPont Company


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