Adhesive detackification

• US 7,258,917 B2
• Filed: 09/05/2003
• Issued: 08/21/2007
• Est. Priority Date: 05/08/2001
• Status: Expired due to Fees

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: Stebbings, William L., Landgrebe, Kevin D., Perry, Dale C.
• Primary Examiner(s): Harlan; Robert D.
• Application Number:
  US10/655,973
• Publication Number:
  US 20050054785A1
• Time in Patent Office: 1,446 Days
• Field of Search: 428/352, 428/343, 428/345
• US Class Current: 428/352
• CPC Class Codes: C08F 2/46 Polymerisation initiated by wave energy or particle radiation
• CPC Class Codes: C08F 2/48 by ultraviolet or visible light
• CPC Class Codes: C08F 220/12 of monohydric alcohols or phenols
• CPC Class Codes: C08F 222/103 of trialcohols, e.g. trimethylolpropane tri(meth)acrylate
• CPC Class Codes: C08F 8/30 Introducing nitrogen atoms or nitrogen-containing groups
• CPC Class Codes: C09D 4/00 Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
• CPC Class Codes: C09J 4/00 Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
• CPC Class Codes: Y10T 428/24802 Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
• CPC Class Codes: Y10T 428/28 Web or sheet containing structurally defined element or component and having an adhesive outermost layer
• CPC Class Codes: Y10T 428/2809 including irradiated or wave energy treated component
• CPC Class Codes: Y10T 428/2839 with release or antistick coating

Abstract

The invention describes a method of curing a polymerizable material containing ethylenically unsaturated bonds at a temperature of 60° C. or less, comprising the steps of (a) providing a curative comprising an effective amount of a light-stable isomer of a 2,4,5-triarylimidazolyl dimer, such as bilophine; (b) activating said curative by application of an activator selected from the group consisting of solvent and friction; and (c) combining the activated curative with the polymerizable material.

Articles comprising an adhesive having a detackified surface, such as adhesive bandages, a detackifying solution, a two-part adhesive system, and a fastening system are also provided.

Claims

1. A two-part adhesive comprising a first part which comprises a light-stable isomer of a 2,4,5-triarylinaidazolyl diner and a second part which comprises a secondary or tertiary amine and a polymerizable material containing ethylenically unsaturated bonds, wherein said secondary or tertiary amine is N-methyl diethanolamine.

2. The adhesive of claim 1 wherein said second part further comprises a solvent.

3. An activated adhesive system comprising a combination of the first part of the two-part adhesive of claim 1 and the second part of the two-part adhesive of claim 1.

4. A set adhesive system comprising the reaction product of the first part of the two-part adhesive of claim 1 and the second part of the two-part adhesive of claim 1.

5. The adhesive system of claim 4 which is removable from a substrate to which the adhesive is adhered by stretching the adhesive to at least about 150% of its initial length at an angle below about 35°

from the substrate.

6. The adhesive system of claim 4 wherein the cured combination is rigid.