Adhesive composition and method

US20110092120A1Inactive Publication Date: 2011-04-21TRANSHIELD INC
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
TRANSHIELD INC
Publication Date
2011-04-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

An adhesive composition contains a block copolymer hot melt adhesive and a vapor releasing vapor corrosion inhibitor mixed with the block copolymer hot melt adhesive, the vapor corrosion inhibitor being in the form of particles suspended in the adhesive composition, the particles preferably having a maximum dimension of less than about 30 microns. One improvement results from inclusion in the adhesive mixture of a titanium and / or zirconium containing coupling agent, either separately or as part of the VCI particles. Another improvement results from blending the adhesive mixture in a continuous process using for example a twin screw extruder. As a result, the adhesive mixture has better uniformity and superior viscosity properties during use.
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Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application is a National Stage of International Application No. PCT / US2009 / 044686, filed May 20, 2009, which is a continuation of PCT International Application No. PCT / US2009 / 030541, filed Jan. 9, 2009, now withdrawn, which claims the benefit of U.S. Provisional Application No. 61 / 054,728, filed on May 20, 2008. The entire disclosures of each of the above applications are incorporated herein by reference.INTRODUCTION

[0002] This invention relates to an adhesive containing a corrosion protective additive and a wrap material for wrapping products which uses the adhesive. The adhesive may include, for example, a vapor corrosion inhibitor (VCI) that reacts with moisture enclosed within the wrapping material to protect the products from corrosion.

[0003] Corrosion is a natural occurring process that causes metals to react with their environment to form more stable compounds. The cost of corrosion on metals has been estimated as about 4.9% of...

Claims

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