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Hydrophobic fluorinated coatings

A hydrophobic, fluorinated layer technology, used in coatings, metal material coating processes, silicon compounds, etc., can solve problems such as depletion of fluorine-containing compounds

Inactive Publication Date: 2013-07-10
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when used in coatings, many fluorochemical materials tend to become depleted over time, especially if the surface is subjected to repeated cleaning or brushing

Method used

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Examples

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example

[0252] Objects and advantages of this invention are further illustrated by the following examples, but the particular materials and amounts thereof recited in these examples, as well as other conditions and details, should not be construed to unduly limit this invention. These examples are for illustrative purposes only and are not intended to limit the scope of the appended claims.

[0253] Material Glossary

[0254] "NALCO 1115" refers to an aqueous colloidal spherical bismuth with 16.5 wt% solids (nominal 16 wt% solids) commercially available from NALCO Chemical Company, Naperville, IL. Silica dispersion with an average particle size of about 4 nm.

[0255] "NALCO 1050" refers to an aqueous colloidal spherical bismuth having 50.4 wt% solids (nominal 50 wt% solids) commercially available from NALCO Chemical Company, Naperville, IL. Silica dispersion with an average particle size of about 20 nm.

[0256] "NALCO TX11561" refers to an aqueous colloidal spherical bismuth wi...

example 1-6 and comparative example A

[0337] For each of Examples 1 to 6, a glass plate measuring 5.1 cm x 7.6 cm was immersed in a cleaning solution of sulfuric acid and hydrogen peroxide (volume ratio (v / v) of sulfuric acid to hydrogen peroxide was 3:1) for 30 minute. Afterwards, the glass plate was rinsed with deionized water and dried by nitrogen flow. Each glass plate was dipped into the primer coating composition (PLC) at a rate of 10.8 centimeters per minute (cm / min), held in the primer coating composition for 20 seconds, and then at a rate of 10.8 cm / min. Remove from primer coat composition. Examples 1 to 6 were immersed in PLC1 to PLC6, respectively. Each primer layer was dried at room temperature and then heated at 200° C. for 30 minutes. Each sample was then dipped into the fluorinated layer coating composition (FLC1 ) using the same coating process used for the primer layer coating composition. Each sample was then dried at room temperature and subjected to a final heat treatment at 120°C for 30 mi...

example 7-12 and comparative example B

[0343] For each of Examples 7 to 10, a stainless steel coupon measuring 5.1 cm x 7.6 cm was immersed in a sulfuric acid and hydrogen peroxide cleaning solution (volume ratio (v / v) of sulfuric acid to hydrogen peroxide was 3:1 ) 120 minutes. Thereafter, each stainless steel coupon was rinsed with deionized water and dried by nitrogen flow. Each stainless steel coupon was immersed in the primer coating composition (PLC) at a rate of 11.5 centimeters per minute (cm / min), held in the primer coating composition for 30 seconds, and then dipped in the primer coating composition at 11.5 cm / min. The rate of removal from the primer layer coating composition. Examples 7, 8, 10, 11 and 12 were dipped into PLC9 and Example 9 into PLC7. Each primer layer was dried at room temperature and then heated at 150° C. for 10 minutes. Each sample was then dipped into the fluorinated layer coating composition shown in Table 2. The same coating process used for the primer layer coating composition...

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Abstract

Articles having hydrophobic fluorinated coatings are provided. More specifically, the articles include a substrate, a primer layer of acid-sintered silica nanoparticles, and a hydrophobic fluorinated layer. The hydrophobic fluorinated coatings can be used on a large variety of substrate and tend to be quite durable even when subjected to repeated rubbing and / or cleaning.

Description

[0001] Cross References to Related Applications [0002] This patent application claims priority to U.S. Provisional Patent Application 61 / 497,350, filed June 15, 2011, and U.S. Provisional Patent Application 61 / 412,134, filed November 10, 2010, the disclosures of which are set forth in their entirety as Incorporated by reference. technical field [0003] The present invention provides articles having hydrophobic fluorinated coatings and methods for their preparation. Background technique [0004] Various compositions of fluorochemical materials have been applied to surfaces to impart low surface energy properties, such as oil repellency and / or water repellency (oleophobicity and / or hydrophobicity). However, when used in coatings, many fluorochemical materials tend to wear out over time, especially if the surface is subjected to repeated cleaning or brushing. [0005] Silane compounds having one or more fluorinated groups such as perfluoroalkyl, perfluoroether and perfluo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/06C09D4/00C01B33/149C01B33/159C08J7/043C09D7/61C09D7/63
CPCC09D4/00C08J7/06C09D7/61C09D7/63Y10T428/249974C08J7/043C09D5/00C09D5/002C09D183/08C23C16/44
Inventor J·A·里德尔景乃勇E·D·奥尔森K·J·曼斯科R·M·弗林S·S·伊耶
Owner 3M INNOVATIVE PROPERTIES CO
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