DUAL STAGE CURED ACRYLIC COMPOSITIONS AND RELATED METHODS

• US 20170174902A1
• Filed: 03/20/2015
• Published: 06/22/2017
• Est. Priority Date: 03/21/2014
• Status: Abandoned Application

• Current Assignee: Avery Dennison Corporation
• Original Assignee: Avery Dennison Corporation
• Inventors: EPPLE, Thomas C., MEDSKER, Robert
• Application Number:
  US15/127,591
• Publication Number:
  US 20170174902A1
• Time in Patent Office: Days
• CPC Class Codes: C08F 220/06 Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
• CPC Class Codes: C08J 2333/02 Homopolymers or copolymers of acids; Metal or ammonium salts thereof
• CPC Class Codes: C08J 3/24 Crosslinking, e.g. vulcanising, of macromolecules mechanical aspects B29C35/00; crosslinking agents C08K
• CPC Class Codes: C08J 3/28 Treatment by wave energy or particle radiation
• CPC Class Codes: C09D 11/101 Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
• CPC Class Codes: C09D 133/02 Homopolymers or copolymers of acids; Metal or ammonium salts thereof
• CPC Class Codes: C09D 4/06 Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00

Abstract

Various methods involving a sequential, dual stage cure are described. The methods utilize a first stage UV cure which is sequentially followed by a second stage electron beam cure. An array of compositions are also described, many of which are acrylate based.

Claims

1. A method of forming a cured polymeric material, the method comprising:

providing a polymeric composition;

exposing the composition to ultraviolet (UV) radiation to thereby form an intermediate composition;

exposing the intermediate composition to electron beam (EB) radiation to thereby form a cured polymeric material.

2. The method of claim 1 wherein the UV radiation has a wavelength within a range of from 200 nm to 500 nm.

3. The method of claim 1 wherein the UV radiation has a wavelength within a range of from 300 nm to 500 nm.

4. The method of claim 1 wherein the electron beam radiation is at a dosage of less than 10 kiloGray.

5. The method of claim 1 wherein the electron beam radiation is at a dosage within a range of from 10 kiloGray to 100 kiloGray.

6. The method of claim 1 wherein the polymeric composition comprises (i) at least one low molecular weight polymer, (ii) at least one monomer diluent, (iii) acrylic acid, and (iv) at least one photoinitiator.

7. The method of claim 6 wherein the composition further comprises at least one crosslinker.

8. The method of claim 1 wherein the composition is free of solvents.

9. The method of claim 6 wherein the low molecular weight polymer is a crosslinkable acrylate polymer.

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