Liquid-repellent layer forming resin composition, and liquid-repellent film, liquid- repellent laminate, packaging material, and container using same

Patent metadata

Field	Value
Publication number	US-12065557-B2
Application number	US-201916973679-A
Country	US
Kind code	B2
Filing date	Jun 7, 2019
Priority date	Jun 14, 2018
Publication date	Aug 20, 2024
Grant date	Aug 20, 2024

Abstract

A liquid-repellent layer forming resin composition comprises a polyolefin resin (A), a silylated polyolefin (B), and a compatibilizer (C) having a site compatible with the polyolefin resin (A) and a site compatible with the silylated polyolefin (B), wherein a polyolefin site of the silylated polyolefin (B) is incompatible with the polyolefin resin (A).

First claim

The invention claimed is:

1. A liquid-repellent layer forming resin composition comprising:
a polyolefin resin (A);
a silylated polyolefin (B); and
a compatibilizer (C) having a site compatible with the polyolefin resin (A) and a site compatible with the silylated polyolefin (B),
wherein,
a polyolefin site of the silylated polyolefin (B) is incompatible with the polyolefin resin (A),
a mass ratio of a content of the compatibilizer (C) to a content of the silylated polyolefin (B), (Mass of compatibilizer (C)/Mass of silylated polyolefin (B)), is 0.05 to 20, and
relative to a total solid content of the liquid-repellent layer forming resin composition,
a content of the polyolefin resin (A) is 50.0-99.9 mass %, and
a total content of the silylated polyolefin (B) and the compatibilizer (C) is 0.1-50.0 mass %.

2. The resin composition according to claim 1 , wherein the compatibilizer (C) comprises at least one selected from a group consisting of a block copolymer of propylene and ethylene and a block copolymer of ethylene and an ethylene-butylene copolymer.

3. The resin composition according to claim 1 , further comprising a silicone (D).

4. A liquid-repellent film comprising a liquid-repellent layer formed by using the resin composition according to claim 1 .

5. The liquid-repellent film according to claim 4 , further comprising one or more resin layers disposed on one main surface of the liquid-repellent layer.

6. The liquid-repellent film according to claim 5 , wherein a melting point T1 (° C.) of the polyolefin resin (A) in the liquid-repellent layer and a melting point T2 (C) of a resin contained in a resin layer in contact with the liquid-repellent layer among the one or more resin layers satisfy a relation: T1<T2.

7. A liquid-repellent laminate comprising:
a base material; and
the liquid-repellent film according to claim 4 disposed on the base material,
wherein the liquid-repellent layer is disposed on at least one outermost surface.

8. A packaging material formed by using the liquid-repellent laminate according to claim 7 .

9. The packaging material according to claim 8 for use involving being subjected to heat treatment at 80° C. or more.

10. A container comprising a liquid-repellent layer formed by using the resin composition according to claim 1 at least on an inner surface.

Assignees

• Toppan Printing Co Ltd

Inventors

• Nagai Aki
• Tanaka Ryo
• Kimura Kentaro
• Kinoshita Kosuke

Classifications

• C08L83/04

  Polysiloxanes · CPC title

• C08L23/26 Primary

  modified by chemical after-treatment (saponified copolymers C08L23/0861; unsaturated acid salts C08L23/0876) · CPC title

• B65D65/40

  Applications of laminates for particular packaging purposes {(B65D1/0215, B65D1/28, B65D3/22, B65D5/0281, B65D5/563, B65D9/30, B65D29/02, B65D31/02, B65D75/26, B65D77/2024, B65D81/1275, B65D81/3811, B65D81/3823, B65D81/3834, B65D81/3846, B65D81/3858, B65D81/3874, B65D81/3886, B65D81/3897 take precedence; laminates per se or laminated packages characterised by the composition or)} · CPC title

• B32B2553/00

  Packaging equipment or accessories not otherwise provided for · CPC title

• B32B2307/73

  Hydrophobic · CPC title