High-gloss, polyvinylidene fluoride-based coating systems and methods

A polyvinylidene fluoride, polyvinylidene fluoride resin technology, applied in the field of high-gloss polyvinylidene fluoride-based coating systems and methods, capable of solving storage problems and complicated shelf life issues

Active Publication Date: 2010-06-23
SWIMC LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a thermosetting component is incorporated into the formulation, then this complicates storage and shelf life issues as the aforementioned heating may cause premature crosslinking

Method used

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  • High-gloss, polyvinylidene fluoride-based coating systems and methods

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0074] Example 1: Coating Composition, Formulation A

[0075] 107.2 grams of Kynar 711 PVDF resin in powder form was mixed into 333.6 grams of NMP at room temperature. The resulting solution was mixed with a high speed pneumatic mixer until all the PVDF resin was dissolved to give a clear solution. At room temperature, this takes about 15-20 minutes. To this solution was slowly added while mixing the following: 333.6 grams of cyclohexanone, 77.0 grams of thermoplastic acrylic resin, 14.7 grams of thermoset acrylic resin, 7.0 grams of melamine (Cymel 303) and 0.3 grams of blocked acid catalyst and 0.8 grams of flowable agent. The resulting solution was then mixed for an additional 15 minutes at high speed to combine all materials.

[0076] Thermoplastic acrylic resin A used in all examples refers to a thermoplastic acrylic resin that combines 71.8 parts by weight of methyl methacrylate, 26.0 parts by weight of ethyl acrylate, 2.0 parts by weight of n-butyl methacrylate and 0...

example 2

[0082] Example 2: Coating Composition, Formulation A1

[0083] A coating composition was prepared using the procedure of Example 1, except that no cyclohexanone was used and the solvent component contained only NMP. The ingredients used in this example and the amounts of each ingredient are listed in the table below.

[0084] Formula A1

[0085] components

[0086] components

example 3

[0087] Example 3: Coating Composition, Formulation B

[0088] Coating compositions were prepared using the procedure of Example 1, except that no thermosetting resin was used. The ingredients used in this example and the amounts of each ingredient are listed in the table below.

[0089] Formula B

[0090] components

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Abstract

Solutions of polyvinylidene resins with very high vinylidene difluoride content in lactam solvent systems and their uses to form high gloss coatings, especially high gloss clear coatings. The present invention also provides coated articles incorporating these coatings. Advantageously, polyvinylidene fluoride (PVDF) resins with sufficiently high vinylidene difluoride content, as well as a wide variety of thermoplastic and thermosetting resins useful in the practice of the present invention, can be easily dissolved in and then stay dissolved in lactam solvents. Conveniently, these solutions may be prepared at room temperature. The ability to coat such PVDF resins from solution, rather than from dispersions, is a key factor leading to the high gloss characteristics provided by many embodiments of the present invention.

Description

[0001] priority claim [0002] This patent application claims priority under 35 USC §119(e) to U.S. Provisional Patent Application 60 / 928,208, filed May 8, 2007, by Register et al., entitled "HIGH-GLOSS, POLYVINYLIDENE FLUORIDE-BASEDCOATING SYSTEMS AND METHODS," The entire content of this patent application is incorporated herein by reference. technical field [0003] The present invention relates to coating compositions comprising polyvinylidene fluoride based polymers and their use to form high gloss coatings on various substrates. Background technique [0004] Coating compositions comprising polyvinylidene fluoride resins are known. Polyvinylidene fluoride (polyvinylidene fluoride, PVDF) is a polymer with repeating units of vinylidene fluoride. The vinylidene fluoride repeat unit has the formula -[CH 2 CF 2 ]-. Homopolymers of polyvinylidene fluoride usually have only repeat units of vinylidene fluoride except at the ends; while other types of polyvinylidene fluorid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/08B05D3/02
CPCB05D7/53C09D7/001B05D7/14B05D5/083B05D5/06C09D7/20Y10T428/3154C09D127/16C08L27/16B32B15/08B05D3/02
Inventor 杰伊·瑞志斯特特德·百思特
Owner SWIMC LLC
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