Unlock instant, AI-driven research and patent intelligence for your innovation.

EPDM foam and sealing material

A sealing material, foam technology, applied in thin material processing, film/sheet adhesive, transportation and packaging, etc., to easily cover gaps and improve flexibility

Inactive Publication Date: 2011-07-06
NITTO DENKO CORP
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, secondary amines are often used as vulcanization accelerators, but when secondary amines are used, nitrosamines (N-nitrosodimethylamine, N-nitrosodiethylamine) may be generated

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • EPDM foam and sealing material
  • EPDM foam and sealing material
  • EPDM foam and sealing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0083] Examples and comparative examples are shown below to describe the present invention more specifically. In addition, this invention is not limited at all by an Example and a comparative example.

[0084] (1) Manufacture of EPDM foam

[0085] (1-1) Prescription ingredients

[0086] A) Resin:

[0087] EPDM (A): EPT3045 (manufactured by Mitsui Chemicals, 4.7% by weight of diene)

[0088] EPDM (B): EP-24 (manufactured by JSR Corporation, diene content 4.5% by weight)

[0089] EPDM (C): Esprene 501A (manufactured by Sumitomo Chemical Co., Ltd., diene content 4.0% by weight)

[0090] Atactic PP (Atactic polypropylene resin, manufactured by Chiba Fine Chemicals Co., Ltd.)

[0091] B) Vulcanization aids:

[0092] Zinc oxide: 2 types of zinc oxide (manufactured by Mitsui Metal Mining Co., Ltd.)

[0093] C) Lubricant:

[0094] Stearic acid: "Powder Stearic Acid Sakura" (Powder Stearic Acid Cherry) (manufactured by NOF Corporation)

[0095] D) Filling material:

[0096] C...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
thicknessaaaaaaaaaa
pore sizeaaaaaaaaaa
Login to View More

Abstract

There is provided an EPDM foam, in which an amount of N-nitrosodimethylamine and N-nitrosodiethylamine generated therefrom by heating the EPDM foam at 200 DEG C for three hours is not more than 1 [mu]g / g, and a 50% compression load value thereof is in a range of 0.10 to 2.0 N / cm2.

Description

technical field [0001] The invention relates to an EPDM foam and a sealing material provided with the EPDM foam. Specifically, the present invention relates to an EPDM foam suitable for use as a sealing material for various industrial products, and a sealing material including the EPDM foam. Background technique [0002] Conventionally, an EPDM foam obtained by foaming ethylene-propylene-diene rubber (hereinafter referred to as EPDM) with a foaming agent is known from the viewpoint of durability as a sealing material for various industrial products. [0003] A vulcanizing agent for vulcanizing EPDM and a vulcanization accelerator for accelerating vulcanization of EPDM are mixed together with the foaming agent in such an EPDM foam. In addition, secondary amines are often used as vulcanization accelerators, but when secondary amines are used, nitrosamines (N-nitrosodimethylamine, N-nitrosodiethylamine) may be generated in some cases. [0004] Therefore, as an EPDM foam that ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08K13/02C08J9/10C09K3/10C09J7/26
CPCC08J9/0033C08J2323/16C08J3/243C09J7/0289C09J2423/006C09J7/26Y10T428/249983
Inventor 岩濑崇行川田让司高坂匠高桥伸幸
Owner NITTO DENKO CORP