Adhesive article comprising a poly(meth)acrylate-based primer layer and methods of making same

Patent metadata

Field	Value
Publication number	US-10617786-B2
Application number	US-201515533735-A
Country	US
Kind code	B2
Filing date	Dec 9, 2015
Priority date	Dec 19, 2014
Publication date	Apr 14, 2020
Grant date	Apr 14, 2020

Abstract

An adhesive article comprising a poly(meth)acrylate-based primer layer and methods of making same. The article can include a backing, a primer layer located on a first major surface of the backing, and a silicone-based adhesive located on the primer layer. The primer layer can be derived from a primer precursor comprising poly(meth)acrylate functionalities. The method can include applying a primer precursor onto a first major surface of a backing, the primer precursor comprising a compound comprising poly(meth)acrylate functionalities; irradiating the primer precursor; applying an adhesive on the irradiated primer precursor; and irradiating the adhesive and the irradiated primer precursor to form a primer layer located between the adhesive and the first major surface of the backing.

First claim

What is claimed is:

1. An adhesive article comprising:
a backing having a first major surface and a second major surface opposite the first major surface;
a primer layer located on the first major surface of the backing, the primer layer being derived from a primer precursor, the primer precursor comprising a (meth)acrylate-functional siloxane oligomer or polymer having three or more pendant (meth)acrylate functional end groups, and wherein the primer precursor is free of Si—O—C covalent bonds; and
a silicone-based adhesive located on the primer layer on the first major surface of the backing, such that the primer layer is located between the first major surface of the backing and the adhesive.

2. The adhesive article of claim 1 , wherein the primer layer and the silicone-based adhesive are covalently bonded together via carbon-carbon bonds.

3. The adhesive article of claim 1 , further comprising a low-adhesion backsize coating on the second major surface of the backing.

4. The adhesive article of claim 3 , wherein the adhesive has a first adhesion strength on the low-adhesion backsize coating on the second major surface of the backing, wherein the adhesive has a second adhesion strength on the primer layer on the first major surface of the backing, and wherein the first adhesion strength is less than the second adhesion strength.

5. The adhesive article of claim 1 , wherein the silicone-based adhesive comprises a nonfunctionalized polysiloxane.

6. The adhesive article of claim 1 , wherein the primer precursor further comprises a tri-(meth)actylate monomer.

7. The adhesive article of claim 1 , wherein the primer precursor is substantially free of an organic solvent.

8. The adhesive article of claim 1 , wherein the primer precursor is substantially free of catalysts and initiators.

9. The adhesive article of claim 1 , wherein the backing comprises at least one of a polyethylene terephthalate and a polyurethane.

10. The adhesive article of claim 1 , wherein the primer precursor comprises telechelic (meth)acrylate functional end groups.

Assignees

• 3M Innovative Properties Co

Inventors

• Kluge Bruce D
• Liu Junkang J
• Wright Robin E
• Dietz Timothy M
• Iseminger Melissa A
• Mitera Margaux B
• Manalo Daniel O

Classifications

• C09J2433/003

  in the primer coating · CPC title

• C09J7/385

  Acrylic polymers · CPC title

• C09J7/25

  based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds · CPC title

• C09J7/50 Primary

  characterised by a primer layer between the carrier and the adhesive · CPC title

• C09J2483/00

  Presence of polysiloxane · CPC title