Coating composition and method of making and using the same

A composition and polymer technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve problems such as troubles, insufficient shelf life, environmental problems, etc., and achieve easy application, extended storage stability, and preventive protection Effect

Inactive Publication Date: 2012-03-14
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many compositions developed for these applications rely on materials (e.g., volatile organic solvents) that may present environmental concerns and/or invo

Method used

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  • Coating composition and method of making and using the same
  • Coating composition and method of making and using the same
  • Coating composition and method of making and using the same

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0051] Instance

[0052] Unless otherwise specified, all parts, percentages, ratios, etc. in the examples and the rest of the specification are by weight. All contact angles reported in the examples are static contact angles reported in degrees.

[0053] The following abbreviations will be used in the examples below:

[0054] NPS1: 16.2% solids (nominal 15% solids) aqueous colloidal spherical silica dispersion, available as NALCO 2326 from NALCO Chemical Company (Naperville, IL);

[0055] NPS2: 16.5% solids (nominal 15% solids) aqueous colloidal spherical silica dispersion, available as NALCO 1115 from NALCO Chemical Company;

[0056] NPS3: 50% solid water-based colloidal spherical silica dispersion, available as NALCO1050 from NALCO Chemical Company;

[0057] NPS4: 20% solid water-based colloidal non-spherical silica dispersion, available as ST-UP from Nissan Chemical America Corporation (Houston, TX);

[0058] NPS5: 20% solid water-based colloidal non-spherical silica dispersion, avai...

Example Embodiment

[0091] Example 1

[0092] NPS1 (1.992 grams (g)) was mixed manually with 4.404 g deionized water. A 4.5% solid polyurethane dispersion masterbatch was prepared by manually mixing 5.125g PU1 and 32.113g deionized water at 22°C until uniform. A dispersion with a silica:polyurethane ratio of 9:1 was prepared by manually mixing diluted NPS and 0.787g 4.5% solid PU1 at 22°C until uniform. To this dispersion was added 2 drops of HCl, and the mixture was stirred. The dispersion was then diluted with deionized water to a total solid content of 0.5% by weight, and the pH was measured using pH test paper.

Example Embodiment

[0093] Example 2-11

[0094] Using a method similar to that described in Example 1, a 5.32% solid NPS1 masterbatch was prepared by manually mixing 30.013 g NPS1 and 66.014 g deionized water at 22°C until uniform. An aliquot of the 5.32% solids NPS1 masterbatch (approximately 6.4 g each) was combined with appropriate amounts of 4.5% solids polyurethane dispersions PU2 and PU5-PU13. As indicated in Table 1, a few drops of HCl were added to these mixtures, after which, each NPS:PU dispersion was subsequently diluted to a total solid content of 0.50 to 1.00%, and a silica: polyurethane ratio of 9:1 to 7:3. The compositions of Examples 1-11 are reported in Table 1 (below).

[0095] Table 1

[0096]

[0097] The 1 inch x 2 inch (2.54 x 5.08 cm (cm)) aluminum coupons of the test panels TP1, TP2 and TP3 were sprayed with ethanol and wiped dry before applying the test dispersion. During the coating process, place one drop of each test dispersion on the test plate, and then swab it with ...

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Abstract

Compositions include an aqueous continuous liquid phase and core-shell particles dispersed in the aqueous continuous liquid phase. Each core-shell particle includes a polymer core surrounded by a shell consisting essentially of nonporous spherical silica particles disposed on the polymer core, wherein the nonporous spherical silica particles have a volume average particle diameter of 60 nanometers or less. Methods of making and using the compositions to coat a substrate are also disclosed.

Description

Technical field [0001] The present invention broadly relates to compositions that can be used to coat substrates. Background technique [0002] Much effort has been made to develop compositions that can be applied to a substrate to provide a beneficial protective layer with desired properties such as ease of cleaning, stain resistance, long-lasting properties, inhibition of soap residue deposition, etc. One or more. Many compositions developed for these applications rely on materials (e.g., volatile organic solvents), which may have environmental issues and / or involve complex application processes. In addition, problems associated with insufficient shelf life continue to plague product developers of these compositions. [0003] Therefore, for many products, various attributes are usually balanced. These attributes include ideal performance attributes, environmental friendliness of the material, satisfactory shelf life, and ease of use by relatively unskilled users. [0004] There ...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08J3/12C08J3/215C08K9/08
CPCC08J3/215C08J2375/04C08L75/04C08K3/36C08K9/08C08L2207/53C09D175/04
Inventor 景乃勇张亦帆贾斯汀·A·里德尔伊莱恩·M·约克吉蒂斯米歇尔·L·莱格特
Owner 3M INNOVATIVE PROPERTIES CO
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