Anti-corrosion composition

a composition and anti-corrosion technology, applied in the field of anti-corrosion compositions, can solve the problems of long downtime caused

Inactive Publication Date: 2004-05-27
MICROPHASE COATINGS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These alternatives are expensive and can lead to long down times caused by replacement or the discontinued use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0015]

1 Component wt (%) Epon 862 epoxy resin 10.98 Ancamide 220 polyamide curing agent 10.98 (3-glycidoxypropyl)trimethoxysilane 14.00 3-aminopropyltriethoxys-ilane 6.98 polydiethoxysiloxane 12.16 titanium isopropoxide 5.75 benzyl alcohol 4.72 pigment 1.57 mica flakes 32.96

[0016] The composition is formulated such that the epoxy functionality on the 3-(glycidoxypropyl)-methoxysilane is at a 1:1 stoichiometric ratio with the amine functionality of the Ancamide 220. The epoxy functionality of the 862 resin is at a 1:1 stoichiometric ratio with the amine functionality of the aminopropyl triethoxysilane. The ethoxy groups on polydiethoxy siloxane are at a 1:1 stoichiometric ratio with the sum of the number of moles of aminopropyl triethoxysilane and the 3-(glycidoxyproply)trimethoxysilane.

[0017] Pencil hardness measurements of the coating after 7 days indicate that the coating has a hardness value of 6H. Samples were exposed to toluene, MEK, ethanol, paint thinner, 50% acetic acid and ...

example 2

[0019]

2 Component wt (%) Epon 862 (epoxy resin) 8.34 3-(glycidoxypropyl)trimethoxy silane 10.63 polydiethoxy siloxane 9.24 titanium isopropoxide 4.29 Heucophos ZPO (organo-zinc corrosion inhibitor) 8.20 Heucorin RZ (zinc salt corrosion inhibitor) 0.91 Custermica A325 (mica) 35.76 fumed silica TS-720 (thixotropic agent) 0.89 Kronos 2160 (titanium oxide) 5.97 Vulcan XC72R (carbon black) 0.12 Ancamide 220 (polyamide curing agent) 8.34 3-aminopropyltriethoxy silane 5.31 Hostavin N24 (UV light stabilizer) 2.00

[0020] The resulting coating displays good adhesion with conventional topcoats. It is more thermally resistant than conventional epoxy resins. Using ASTM G26 and continuous exposure to a xenon arc for 500 hours, no cracking or delamination occurs. With respect to fluid resistance, ASTM D5402 is used to test a variety of fluids. The coating is resistant to toluene, paint remover, ethanol, brake fluid, grill cleaner, mineral spirits, MEK and caustic acid.

example 3

[0021]

3 Component wt (%) Epon 862 (epoxy resin) 4.99 Heloxy 505 (epoxy modifier) 4.99 3-(glycidoxypropyl)methyldiethoxy silane 10.52 polydiethoxy siloxane 9.15 titanium isopropoxide 4.24 Heucophos ZPO (organo-zinc corrosion inhibitor) 8.11 Heucorin RZ (zinc salt corrosion inhibitor) 0.90 Custermica A325 (mica) 35.39 fumed silica TS-720 (thixotropic agent) 0.88 Kronos 2160 (titanium oxide) 5.91 Vulcan XC72R (carbon black) 0.11 Ancamide 220 (polyamide curing agent) 9.43 3-aminopropyltriethoxy silane 3.38 Hostavin N24 (UV light stabilizer) 2.00

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Abstract

The present invention provides an anti-corrosion composition which can be applied to various substrates. The composition comprises a glass matrix formed by crosslinking a mixture of an amine-functionalized silane and an alkoxy-functionalized siloxane, an epoxy and a compatabilizing agent for coupling the epoxy and the alkoxy-functionalized siloxane of the glass matrix.

Description

[0001] This application claims priority to U.S. Provisional Application No. 60 / 417,708; filed on Oct. 10, 2002, the disclosure of which is incorporated herein by reference in its entirety.FIELD AND BACKGROUND OF THE INVENTION[0002] The present invention relates to an anti-corrosion composition suitable for use on a variety of substrates. Of particular interest is the use of the composition as a coating for corrosive industrial environments such as smoke stacks, rail cars, hoppers, factory floors, pipe linings, engine rooms and the like.[0003] Metal substrates and related parts in such industrial environments are subjected to a number of acids and bases due to the variety of compositions that pass through, contact, or are contained in the industrial environment. For example, a rail car may have a solvent such as a highly polar alcohol sitting in the rail car for months or even longer periods of time. Similarly, an acid such as sulphuric acid may be generated due to an industrial proc...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C08G59/40C08G59/44C09D163/00C09D163/02C09D183/14
CPCC08G59/4085C08G59/44C09D163/00C09D183/14C08L83/00C08L2666/04
Inventor SIMENDINGER, WILLIAM H. IIIGARRETT, DAVID WILLIAMMILLER, SHAWN D.
Owner MICROPHASE COATINGS
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