Cleanable articles and methods for making and using same

Patent metadata

Field	Value
Publication number	US-9527336-B2
Application number	US-201214368359-A
Country	US
Kind code	B2
Filing date	Dec 28, 2012
Priority date	Dec 29, 2011
Publication date	Dec 27, 2016
Grant date	Dec 27, 2016

Abstract

Cleanable articles having overcoats with hydrophilic front surfaces and which are siloxane-bonded to an underlying body member. Also, methods of making and using such articles.

First claim

What is claimed is:

1. A method for making a cleanable article comprising: (a) providing a body member having a front surface wherein at least a portion of said front surface is siloxane-bondable, said body member comprising a polymeric matrix comprising nanoparticles wherein said matrix has been treated by exposing at least a portion of the front surface thereof to at least one of the following: plasma, corona, and flame treatment so as to expose siloxane-bondable nanoparticles; and thereafter (b) applying an overcoating composition to at least a portion of said siloxane-bondable surface, said overcoating composition comprising a siloxane-bondable component; and (c) curing said overcoat composition to form a hydrophilic overcoat having a siloxane bond to said front surface of said body member.

2. The method of claim 1 wherein said body member comprises the reaction product of a curable mixture comprising at least one curable component selected from the group consisting of (meth)acrylate monomers and (meth)acrylate oligomers.

3. The method of claim 2 wherein said curable mixture further comprises a plurality of surface-modified nanoparticles.

4. The method of claim 3 wherein said nanoparticles are selected from the group consisting of aluminum oxides, antimony tin oxide, bismuth subsalicylate, boemite, calcium carbonate, calcium phosphate, cerium dioxide, graphene, halloysite, lanthanum boride, lithium carbonate, silver, amorphous silica, colloidal silica, silicon dioxide, titanium dioxide, zinc oxide, zirconium oxide, and zirconium dioxide.

5. The method of claim 3 wherein said nanoparticles comprises a plurality of silica particles.

6. The method of claim 1 wherein the front surface of said body member has a matte finish before the overcoating composition is applied thereto.

7. The method of claim 1 wherein the front surface of said body member has a glossy finish before the overcoating composition is applied thereto.

8. The method of claim 1 wherein said body member comprises a siloxane-bondable facing layer.

9. The method of claim 8 wherein said facing layer is a diamond-like glass film.

10. A cleanable article comprising: (a) a body member having a front surface wherein said front surface is siloxane-bondable, said body member comprising a polymeric matrix comprising nanoparticles wherein said matrix has been treated by exposing at least a portion of the front surface thereof to at least one of the following: plasma, corona, and flame treatment so as to expose siloxane-bondable nanoparticles; and (b) an overcoat bonded via siloxane bonds to said front surface, said overcoat bonded to said body member after said polymeric matrix is treated to expose siloxane-bondable nanoparticles.

11. A method for using a cleanable article comprising: (a) providing a cleanable article of claim 10 ; and (b) writing indicia on the front surface thereof.

12. The method of claim 11 further comprising (c) erasing at least a portion of said indicia.

Assignees

• 3M Innovative Properties Co

Inventors

• Mahli David M
• Yapel Robert A
• Riddle Justin A
• Johnson Mitchell A F
• David Moses M
• Gustafson Frederick J
• Liu Lan H
• Yang Yu
• Jing Naiyong
• Nelson Caleb T

Classifications

• B43L1/002 Primary

  chemical details · CPC title

• B32B7/12

  using interposed adhesives or interposed materials with bonding properties · CPC title

• B32B2307/408

  Matt, dull surface · CPC title

• B32B37/24 Primary

  with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate (B32B37/15 takes precedence) · CPC title

• C09D183/04

  Polysiloxanes · CPC title