Rubber covered roll and rubber composition for rubber covered ro

Details Rubber covered roll and rubber composition for rubber covered ro Rubber covered roll and rubber composition for rubber covered ro

1993-04-30

1994-12-27

Ryan, Patrick J.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

428372, 428375, 428377, 428383, 428389, 428390, 428461, 428462, 492 56, B32B 2500, B21B 3108

Patent

active

053764480

ABSTRACT:
Disclosed herein is a rubber covered roll comprising a metallic core and at least one covering rubber layer. The covering rubber layer is a vulcanized rubber layer formed by a rubber composition comprising an ethylenically unsaturated nitrile-conjugated diene type highly saturated copolymer rubber (A) having a conjugated diene unit content of the polymer chain of at most 25 wt. % and the zinc salt (B) of an ethylenically unsaturated carboxylic acid. A covering rubber layer coming into contact with the metallic core is at least a vulcanized rubber layer formed by a rubber composition comprising 100 parts by weight of a rubber component containing at least 50 wt. % of the highly saturated copolymer rubber (A) and 10-40 parts by weight of the zinc salt (B). A rubber composition for rubber covered rolls is also disclosed. It comprises 100 parts by weight of a rubber component containing 90-50 wt. % of the highly saturated copolymer rubber (A) and 50-10 wt. % of a diene rubber, and 10-40 parts by weight of the zinc salt (B) of an ethylenically unsaturated carboxylic acid.

REFERENCES:
patent: 2594348 (1952-04-01), Rockoff
patent: 4713409 (1987-12-01), Hayes et al.
patent: 4720526 (1988-01-01), Roland
patent: 4843114 (1989-06-01), Touchet et al.
patent: 4918144 (1990-04-01), Fukuda
patent: 4981381 (1991-01-01), Murata
patent: 4990570 (1991-02-01), Saito et al.

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