Laminate, printed matter, aqueous dispersion liquid, and laminate manufacturing method

Patent metadata

Field	Value
Publication number	US-12139588-B2
Application number	US-202218284116-A
Country	US
Kind code	B2
Filing date	Mar 9, 2022
Priority date	Mar 31, 2021
Publication date	Nov 12, 2024
Grant date	Nov 12, 2024

Abstract

The present invention provides a layered product comprising a release layer that can be formed from an aqueous coating liquid, that is quickly released from the substrate when alkaline treatment is performed, and that has excellent water resistance. The layered product of the present invention is a layered product comprising a release layer on a substrate, the release layer comprising a granular carboxylic anhydride-modified olefin resin and a binding part containing an acid group-free thermoplastic resin, the carboxylic anhydride-modified olefin resin having an average particle size of 0.5 to 20 μm, the binding part having a thickness of 0.25 to 20 μm, and the release layer having an actual acid value of 100 mg KOH/m 2 or more.

First claim

The invention claimed is:

1. A layered product comprising a release layer on a substrate,
the release layer comprising a granular carboxylic anhydride-modified olefin resin and a binding part containing an acid group-free thermoplastic resin,
the carboxylic anhydride-modified olefin resin having an average particle size of 0.5 to 20 μm, the binding part having a thickness of 0.25 to 20 μm, and the release layer having an actual acid value of 100 mg KOH/m 2 or more.

2. The layered product according to claim 1 , wherein an acid value when the carboxylic anhydride-modified olefin resin is ring-opened by hydrolysis is 400 mg KOH/g or more.

3. The layered product according to claim 1 , wherein the proportion of the carboxylic anhydride-modified olefin resin in the release layer is 5 to 75 mass %.

4. The layered product according to claim 1 , wherein the thickness of the binding part relative to the average particle size of the carboxylic anhydride-modified olefin resin is 0.1 times or more.

5. The layered product according to claim 1 , wherein the substrate comprises a polyolefin resin.

6. The layered product according to claim 1 , wherein the thermoplastic resin is a water-soluble polymer or a water-dispersible polymer.

7. The layered product according to claim 1 , which is in the form of a film.

8. A printed matter having a printed layer on the release layer of the layered product according to claim 1 .

9. A method for producing the layered product of claim 1 , the method comprising applying an aqueous dispersion to a substrate followed by drying to form the release layer of the product of claim 1 .

Assignees

• Yupo Corp

Inventors

• Sato Ryo

Classifications

• C08J2423/06

  Polyethene · CPC title

• C08J5/18

  Manufacture of films or sheets · CPC title

• C08J2425/08

  Copolymers of styrene (C08J2429/08, C08J2435/06, C08J2455/02 take precedence) · CPC title

• C08J2475/04

  Polyurethanes · CPC title

• C08J2323/12

  Polypropene · CPC title