Reinforcing cord for rubber and rubber product using the same

Patent metadata

Field	Value
Publication number	US-10000868-B2
Application number	US-201213978087-A
Country	US
Kind code	B2
Filing date	Jan 20, 2012
Priority date	Jan 21, 2011
Publication date	Jun 19, 2018
Grant date	Jun 19, 2018

Abstract

Provided are a reinforcing cord using a reinforcing fiber treating agent for improving the performance, particularly oil resistance, of rubber products, and a highly oil-resistant rubber product. By using a reinforcing fiber treating agent that has an α,β-ethylenically unsaturated nitrile monomer unit content of 30-55 wt %, an acid group-containing α,β-ethylenically unsaturated monomer unit content of 3-20 wt %, an iodine value of 120 or less and a tetrahydrofuran insoluble fraction of 30 wt % or more, the oil resistance of the reinforcing cord and thus the oil resistance of rubber products using the reinforcing cord are improved.

First claim

The invention claimed is:

1. A reinforcing cord for rubber product comprising:
a reinforcing fiber; and
a coating on the surface of the reinforcing fiber,
wherein the coating contains:
a latex of a highly saturated nitrile rubber having an acrylonitrile content of 34 wt % to 44 wt %, a methacrylic acid content of 6 wt % to 8 wt %, an iodine value of 120 or less, and a tetrahydrofuran insoluble fraction of 30 wt % or more;
cross-linking agents comprising diphenylmethane-4,4′-bismaleimide and polyisocyanate; and
a resorcin-formaldehyde condensate.

2. The reinforcing cord according to claim 1 , wherein the coating further contains carbon black.

3. The reinforcing cord according to claim 1 , wherein the coating further contains an inorganic filler other than carbon black.

4. A rubber product comprising:
a matrix rubber; and
a reinforcing cord embedded in the matrix rubber,
wherein the reinforcing cord is the reinforcing cord according to claim 1 .

Assignees

• Senda Osamu
• Nakashima Tomonori
• Zeon Corp
• Nippon Sheet Glass Co Ltd

Inventors

• Senda Osamu
• Nakashima Tomonori

Classifications

• D06M15/285 Primary

  of unsaturated carboxylic acid amides or imides · CPC title

• D06M15/31

  of unsaturated nitriles · CPC title

• Y10T428/2933

  Coated or with bond, impregnation or core · CPC title

• D06M15/41

  Phenol-aldehyde or phenol-ketone resins · CPC title

• Y10T428/292

  In coating or impregnation · CPC title