Adhesive detackification

• US 6,627,309 B2
• Filed: 05/08/2001
• Issued: 09/30/2003
• 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): Seidleck, James J.
• Assistant Examiner(s): Ribar, Travis B
• Application Number:
  US09/850,784
• Publication Number:
  US 20030054138A1
• Time in Patent Office: 875 Days
• Field of Search: 428/343, 428/345, 428/352, 602/42, 602/54, 602/56, 602/57, 602/58
• 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. An article comprising an adhesive having a detackified surface, wherein said surface contains a reaction product of 2,4,5-triarylimidazolyl radicals.

2. The article of claim 1 wherein the detackified surface has a tack level below about 5 g.

3. The article of claim 1 additionally comprising a non-detackified surface that is essentially free of bilophine.

4. The article of claim 1 wherein the adhesive 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.

5. The article according to claim 1 wherein the detackified surface is selected from the group consisting of:

an exposed portion of an adhesive bond line, an edge of an adhesive sheet, an edge of an adhesive tape strip, an edge of an adhesive tape roll, an outer surface of a glue stick, an outer surface of a bulk adhesive mass, a back surface of a unitape, and a back surface of an adhesive strip in an adhesive bandage.

6. The article of claim 5 being an adhesive strip in an adhesive bandage, wherein the detackified surface comprises an integral backing to the adhesive strip.

7. A bandage comprising the adhesive strip of claim 6 further comprising an absorbent pad.