# US 12,109,832 B2 · Film for latex ink

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- Number: US 12,109,832 B2
- Document ID: US12109832B2
- Status: Granted
- Kind: B2
- Application number: 18/016,483
- Filed: 2020-07-20
- Published: 2023-09-14
- Granted: 2024-10-08
- Earliest claimed: 2020-07-20
- Assignees: Lintec Corporation
- Applicants: Lintec Corporation
- Inventors: Nana Suzuki; Ritsuko Tsukada
- Web page: https://patentgrep.com/patent/US12109832B2

## CPC

- B41M 5/52: Macromolecular coatings
- B41M 5/5254: {characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers}
- B41M 5/5272: {Polyesters; Polycarbonates}
- B41M 5/5227: {characterised by organic non-macromolecular additives, e.g. UV-absorbers, plasticisers, surfactants}
- B41M: PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING, (correction of typographical errors B41J; processes for applying transfer pictures or the like B44C1/16; fluid media for correction of typographical errors by coating C09D10/00; printing textiles D06P)

## Abstract

An object is to provide a film for latex ink having a latex ink-receiving layer containing an acrylic resin, the latex ink-receiving layer having excellent adhesion to both a printed portion using latex ink and a base material. Then, the object is achieved by the following: a film for latex ink having a laminate structure in which a latex ink-receiving layer (X) and a base material (Y) are stacked, in which the latex ink-receiving layer (X) is formed of a resin composition (x1) containing an acrylic resin (A) having a cross-linkable functional group and a cross-linking agent (B), and the cross-linking agent (B) contains an isocyanurate compound (B1) and a modified product (B2) of the isocyanurate compound.

## Claims

### Claim 1

A film for latex ink comprising
a laminate structure in which a latex ink-receiving layer (X) and a base material (Y) are stacked,
wherein the latex ink-receiving layer (X) is formed of a resin composition (x1) comprising an acrylic resin (A) having a cross-linkable functional group and a cross-linking agent (B),
the cross-linking agent (B) comprises an isocyanurate compound (B1) and a modified product (B2) of the isocyanurate compound,
the isocyanurate compound (B1) is a trimer of 1,6-hexamethylene diisocyanate, and
the modified product (B2) of the isocyanurate compound is a trimer of 1,6-hexamethylene diisocyanate, and has one tertiary amino group or two or more tertiary amino groups.

### Claim 2 (depends on 1)

The film for latex ink according to claim 1,
wherein the acrylic resin (A) having the cross-linkable functional group has a hydroxyl value of 5.0 mg KOH/g to 25.0 mg KOH/g.

### Claim 3 (depends on 1)

The film for latex ink according to claim 1, wherein the acrylic resin (A) having the cross-linkable functional group has a glass transition temperature (Tg) of 100° C. or lower.

### Claim 4 (depends on 1)

The film for latex ink according to claim 1, wherein a total content of the isocyanurate compound (B1) and the modified product (B2) of the isocyanurate compound is 4.0 parts by mass or greater with respect to 100 parts by mass of the acrylic resin (A) having the cross-linkable functional group.

### Claim 5 (depends on 1)

The film for latex ink according to claim 1, wherein the base material (Y) comprises a polyester resin.

### Claim 6 (depends on 1)

The film for latex ink according to claim 1, wherein the film is suitable for use in printing using latex ink comprising an acrylic resin.

### Claim 7 (depends on 1)

A method for using a film for latex ink described in claim 1, comprising forming a printed portion on the latex ink-receiving layer of the film for latex ink using latex ink.

### Claim 8 (depends on 1)

A method for producing a printed article, the method comprising forming a printed portion on a latex ink-receiving layer of the film for latex ink described in claim 1 using latex ink.

### Claim 9 (depends on 1)

A printed article comprising a printed portion printed with latex ink on a latex ink-receiving layer of the film for latex ink described in claim 1.