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New Water-Based Fluoropolymer Resins for Ultra-Weatherable Coatings

New Water-Based Fluoropolymer Resins for Ultra-Weatherable Coatings
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Fluoropolymer resins find widespread use as building blocks for ultra-weatherable coatings. Fluoroethylene vinyl ether (FEVE) resins were developed to overcome some of the problems associated with the application of standard fluoropolymer coatings. FEVE resins, which yield topcoats with expected lifetimes exceeding 60 years, can be cured at ambient temperatures for field application, or at elevated temperatures in the shop. In order to allow coating manufacturers to conform to government regulations on solvents, water-based FEVE resins were developed several years ago. 

Product Number: 41209-472-SG
Author: Winn Darden, Bob Parker, Naoko Sumi, Isao Kimura, Masakazu Ataku, Takashige Maekawa
Publication Date: 2009
Industry: Coatings
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$20.00
$20.00

Fluoropolymer resins find widespread use as building blocks for ultra-weatherable coatings. Fluoroethylene vinyl ether (FEVE) resins were developed to overcome some of the problems associated with the application of standard fluoropolymer coatings. FEVE resins, which yield topcoats with expected lifetimes exceeding 60 years, can be cured at ambient temperatures for field application, or at elevated temperatures in the shop. In order to allow coating manufacturers to conform to government regulations on solvents, water-based FEVE resins were developed several years ago. The original water-based resins were water emulsions. To improve compatibility with water, changes in the FEVE molecule and the addition of emulsifying agents were required. Because of these changes, fluorourethanes made with FEVE emulsions have a greater sensitivity to water, and don’t weather as well as those made with the traditional solvent-based resins. FEVE resin water dispersions were developed to overcome these deficiencies while still allowing formulation of solvent-free coatings. These dispersions are made using solid FEVE resins, leading to substantial improvements in water stability and weathering.

Fluoropolymer resins find widespread use as building blocks for ultra-weatherable coatings. Fluoroethylene vinyl ether (FEVE) resins were developed to overcome some of the problems associated with the application of standard fluoropolymer coatings. FEVE resins, which yield topcoats with expected lifetimes exceeding 60 years, can be cured at ambient temperatures for field application, or at elevated temperatures in the shop. In order to allow coating manufacturers to conform to government regulations on solvents, water-based FEVE resins were developed several years ago. The original water-based resins were water emulsions. To improve compatibility with water, changes in the FEVE molecule and the addition of emulsifying agents were required. Because of these changes, fluorourethanes made with FEVE emulsions have a greater sensitivity to water, and don’t weather as well as those made with the traditional solvent-based resins. FEVE resin water dispersions were developed to overcome these deficiencies while still allowing formulation of solvent-free coatings. These dispersions are made using solid FEVE resins, leading to substantial improvements in water stability and weathering.

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