Laminated body, conductive roller, and method for manufacturing laminated body

Patent metadata

Field	Value
Publication number	US-10442169-B2
Application number	US-201515321781-A
Country	US
Kind code	B2
Filing date	Jun 26, 2015
Priority date	Jun 30, 2014
Publication date	Oct 15, 2019
Grant date	Oct 15, 2019

Abstract

Provided are a laminated body that can improve the adhesive force between the base layer and the surface layer, a conductive roller provided with the laminated body, and a method for manufacturing a laminated body with improved adhesive force between the base layer and the surface layer. The disclosed laminated body includes a base layer and a surface layer formed on the base layer, the base layer includes polyurethane having a (meth)acryloyl group, the surface layer includes a radical curable resin obtained by polymerizing (meth)acrylate that has a (meth)acryloyl group, and the laminated body is formed by the (meth)acryloyl group in the polyurethane reacting with the (meth)acryloyl group in the (meth)acrylate.

First claim

The invention claimed is:

1. A laminated body comprising a base layer and a surface layer formed on the base layer; wherein
the base layer includes a polyurethane having a (meth)acryloyl group, the base layer being formed by thermal curing;
the surface layer includes an ultraviolet curable resin obtained by polymerizing a (meth)acrylate that has a (meth)acryloyl group;
the laminated body is formed by the (meth)acryloyl group in the polyurethane reacting with the (meth)acryloyl group in the (meth)acrylate;
the polyurethane is obtained by reacting a polyol, a prepolymerized tolylene diisocyanate, and a (meth)acrylate which is at least one selected from the group consisting of 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, 2-hydroxyethyl methacrylate, 4-hydroxybutyl acrylate, and hydroxyethyl acrylamide; and
the compounding amount of the (meth)acrylate is from 2 parts by mass to 20 parts by mass relative to a total of 100 parts by mass of the polyol and the prepolymerized tolylene diisocyanate.

2. The laminated body of claim 1 , wherein the compounding amount of the (meth)acrylate is from 2 parts by mass to 10 parts by mass relative to a total of 100 parts by mass of the polyol and the prepolymerized tolylene diisocyanate.

3. The laminated body of claim 1 , wherein the compounding amount of the (meth)acrylate is from 2 parts by mass to 6 parts by mass relative to a total of 100 parts by mass of the polyol and the prepolymerized tolylene diisocyanate.

4. The laminated body of claim 1 , wherein the compounding amount of the (meth)acrylate is from 4 parts by mass to 20 parts by mass relative to a total of 100 parts by mass of the polyol and the prepolymerized tolylene diisocyanate.

5. The laminated body of claim 1 , wherein the compounding amount of the (meth)acrylate is from 4 parts by mass to 10 parts by mass relative to a total of 100 parts by mass of the polyol and the prepolymerized tolylene diisocyanate.

6. The laminated body of claim 1 , wherein the compounding amount of the (meth)acrylate is from 4 parts by mass to 6 parts by mass relative to a total of 100 parts by mass of the polyol and the prepolymerized tolylene diisocyanate.

7. A conductive roller comprising the laminated body of claim 1 .

8. A method for manufacturing the laminated body of claim 1 , the method comprising:
forming a base layer including polyurethane having a (meth)acryloyl group;
applying a composition including (meth)acrylate onto the base layer that was formed; and
irradiating the applied composition with ultraviolet light to form a surface layer that includes a polymer of the (meth)acrylate and to react the (meth)acryloyl group in the (meth)acrylate with the (meth)acryloyl group in the polyurethane,
wherein the polyurethane is obtained by reacting polyol, prepolymerized tolylene diisocyanate, and (meth)acrylate which is at least one selected from the group consisting of 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, 2-hydroxyethyl methacrylate, 4-hydroxybutyl acrylate, and hydroxyethyl acrylamide.

Assignees

• Bridgestone Corp

Inventors

• Osaku Akihide
• Kamijo Yusuke
• Sano Takehiro

Classifications

• B32B27/40 Primary

  comprising polyurethanes · CPC title

• C08F299/06

  from polyurethanes · CPC title

• B32B7/04

  Interconnection of layers · CPC title

• B32B27/30

  comprising vinyl {(co)polymers; comprising acrylic (co)polymers} · CPC title

• C08G18/4241

  from dicarboxylic acids and dialcohols in combination with polycarboxylic acids and/or polyhydroxy compounds which are at least trifunctional · CPC title