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Silane coating compositions and methods of use thereof

A composition, silane technology, used in anti-corrosion coatings, coatings, etc.

Inactive Publication Date: 2008-11-05
UNIVERSITY OF CINCINNATI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, although certain silane solutions may improve adhesion between metal surfaces and peroxide-cured rubber, these same silane solutions may not necessarily have the same results with sulfur-cured rubber

Method used

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  • Silane coating compositions and methods of use thereof
  • Silane coating compositions and methods of use thereof
  • Silane coating compositions and methods of use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment I

[0063] In this example, by mixing 5 parts of pure bis(trimethoxysilyl-propyl)amine (available from GE Silicones A-1170, www.gesilicones.com ) with 1 part of pure vinyltriacetoxysilane (SIV 9098 from Gelest Inc., www.gelest.com ) to obtain a 5% by volume AV5 silane solution. Add 5 parts of this mixture to 95 parts of deionized (DI) water and mix well. The silane solution was aged for 3 weeks before use. The water-based dispersion of polymer resin was prepared by mixing 70 parts by weight of EPI- 5522-WY-55 (a 55% aqueous dispersion of bisphenol A diglycidyl ether (DGEBA) epoxy resin, available from Hexion Specialty Chemicals, Inc., Columbia, Ohio) with 15 parts polyisocyanate (curing agent) and 0.5 The tin catalyst is prepared in parts by weight. The mixture was then diluted to 50% by volume with n-butoxyethanol. Then, 98 parts by weight of the silane solution and 2 parts by weight of the water-based resin dispersion were mixed to obtain a water-based silane coating c...

Embodiment II

[0069] In this example, by dispersing 5 ml of bis(triethoxysilylpropyl) tetrasulfide (available from GE Silicones) in 95 ml of DI water A-1289, www.gesilicones. com) A 5% by volume solution of A-1289 silane was prepared. Add 4g EPI- WD 510 (water-reducible diglycidyl ether of bisphenol A (DGEBA) epoxy resin (100% resin) available from Hexion Specialty Chemicals, Inc., Columbia, Ohio) in 100 ml of a 5% aqueous mixture of A-1289 , to provide a water-based silane coating composition. The components were mixed with agitation for 24 hours prior to compounding.

Embodiment III

[0071] In an additional third example, by dispersing 5 ml of bis(triethoxysilylpropyl) tetrasulfide (available from GE Silicones) in 95 ml of DI water A-1289, www.gesilicones.com) A 5 volume percent solution of A-1289 silane was prepared. 4g ECO- 9790, a 42% solids dispersion in 7% 2-propoxyethanol, 3% xylene, 3% ethanolamine and 45% water-based acrylic acid was added to 100ml of a 5% aqueous mixture of A-1289 to obtain an aqueous Silane coating composition. The components were mixed with agitation for 24 hours prior to compounding.

[0072] Aluminum alloy (AA 6111) and HDG were cleaned with 7% Chemclean (from Chemetall / Oakite Inc) at 60°C, followed by rinsing with tap water and air drying. The cleaned AA 6111 and HDG panels were dipped in the two silane coating compositions described above (Examples II and III), followed by curing at 150°C for 1 hour.

[0073] DC polarization tests and EIS measurements were performed on the above plates in neutral 3.5% NaCl solution. T...

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Abstract

A method of treating a substrate, such as a metal surface, by application of a silane coating composition containing at least one water-soluble or dispersible silane and a polymeric resin, which may be provided as a water-based dispersion of polymeric resin, the polymeric resin being present in an amount less than 10% by weight of the composition to slow the rate of corrosion of the metal surface and / or to promote adhesion of rubber thereto. The at least one silane can include a bis-amino silane, a vinyl silane, a bis-sulfur silane, or mixtures thereof and the polymeric resin may include an epoxy resin, acrylate resin, polyurethane resin, novolac resin, or mixtures thereof. The silane coating compositions may be either water or solvent based.

Description

[0001] related application [0002] This application claims U.S. Patent Application Serial No. 11 / 366,284, entitled "Silane Coating Compositions and Methods of Using Same," filed March 2, 2006, and U.S. Provisional Application No. 60 / 715422 and 60 / 715445, the disclosures of which are incorporated herein by reference. technical field [0003] In general, the present invention relates to silane coating compositions and methods of their use, for example, for coating metal surfaces to reduce their rate of corrosion, and / or to improve the adhesion of rubber to metal. Background technique [0004] Silanes have been found to be useful in the treatment of metal surfaces, for example to provide corrosion protection thereto, and / or to improve the adhesion of rubber to metal. These silanes can be divided into two categories based on their hydrophobicity: organic solvent-based and aqueous. The former class is so highly immiscible with water that large quantities of organic solvents a...

Claims

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Application Information

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IPC IPC(8): C09D4/00C09D5/08C09D183/07C09D183/08
Inventor W·J·范奥伊吉K·苏里亚纳拉亚南J·S·甘地N·BV·西姆哈德里C·希文M·B·斯泰西朱丹青
Owner UNIVERSITY OF CINCINNATI
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