Latex and composite

Patent metadata

Field	Value
Publication number	US-11225566-B2
Application number	US-201916979571-A
Country	US
Kind code	B2
Filing date	Mar 12, 2019
Priority date	Mar 12, 2018
Publication date	Jan 18, 2022
Grant date	Jan 18, 2022

Abstract

A latex including: a nitrile rubber containing an α,β-ethylenically unsaturated nitrile monomer unit in a content of 8 to 50 wt % and an α,β-ethylenically unsaturated dicarboxylic acid monoester monomer unit in a content of 1 to 10 wt %, and having an iodine value of 120 g/100 g or less; and a benzisothiazoline-based compound represented by the following general formula (1), wherein the content of the benzisothiazoline-based compound is 50 ppm by weight or more, with respect to the nitrile rubber, and a redox potential of the latex is 80 to 800 mV.In the general formula (1) mentioned above, R1 represents a hydrogen atom, or a substituted or unsubstituted organic group, R2 each independently represents a hydrogen atom, or a substituted or unsubstituted organic group, and “n” represents an integer of 0 to 4.

First claim

The invention claimed is:

1. A latex comprising:
a nitrile rubber containing an α,β-ethylenically unsaturated nitrile monomer unit in a content of 8 to 50 wt % and an α,β-ethylenically unsaturated dicarboxylic acid monoester monomer unit in a content of 1 to 10 wt %, and having an iodine value of 120 g/100 g or less; and
a benzisothiazoline-based compound represented by the following general formula (1),

wherein R 1 represents a hydrogen atom, or a substituted or unsubstituted organic group, R 2 each independently represents a hydrogen atom, or a substituted or unsubstituted organic group, and “n” represents an integer of 0 to 4,
wherein the content of the benzisothiazoline-based compound is 50 ppm by weight or more, with respect to the nitrile rubber, and
a redox potential of the latex is 80 to 800 mV.

2. The latex according to claim 1 , wherein the benzisothiazoline-based compound is 1,2-benzisothiazolin-3-one.

3. The latex according to claim 1 , further comprising a thermosetting resin.

4. A composite comprising a fiber base material and a rubber member, wherein the fiber base material and the rubber member adhere by a bonding layer formed with the latex according to claim 1 .

5. A composite comprising a fiber base material and a rubber member, wherein the fiber base material and the rubber member adhere by a bonding layer formed with the latex according to claim 2 .

6. A composite comprising a fiber base material and a rubber member, wherein the fiber base material and the rubber member adhere by a bonding layer formed with the latex according to claim 3 .

Assignees

• Zeon Corp

Inventors

• Ono Kentaro

Classifications

• B32B2571/00

  Protective equipment · CPC title

• C09J11/06

  organic · CPC title

• B32B5/02

  characterised by structural features of a {fibrous or filamentary} layer {(layer formed of metallic wires B32B15/02; layer formed of natural mineral fibres B32B19/02; layer formed of wood fibres B32B21/02)} · CPC title

• C09J109/04

  Latex · CPC title

• B32B25/14

  comprising {synthetic rubber copolymers (B32B25/18 and B32B25/20 take precedence)} · CPC title