Rubber composition

Details Rubber composition Rubber composition

2005-07-12

2005-07-12

Lipman, Bernard (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S332600, C525S343000

Reexamination Certificate

active

06916888

ABSTRACT:
A rubber composition comprising a vulcanizable rubber, a reinforcing filler, a softening agent, and other reagents for rubber to which is added in a specific amount of a sulfur compound having the formula (I):in-line-formulae description="In-line Formulae" end="lead"?—(SxR1)n—  (I)in-line-formulae description="In-line Formulae" end="tail"?wherein R1represents an organic group, x is a number of 3 to 5 on average, and n is an integer of 1 to 100, or a specific sulfur compound (1) and sulfur (2), and optionally a thiazole base, sulfenamide base, thiuram base, and/or diothio acid base vulcanization accelerator (3).

REFERENCES:
patent: 3083232 (1963-03-01), Lissant
patent: 3324051 (1967-06-01), Lal
patent: 3351571 (1967-11-01), Grace
patent: 5780531 (1998-07-01), Scholl
patent: 0683736 (1964-04-01), None
patent: 0 791 622 (1997-08-01), None
patent: 1144634 (1969-03-01), None
patent: WO99/60047 (1999-11-01), None
Abstract of Database WPI, Section Ch, Week 199829, Derwent Publications Ltd., London, GB; AN 1998-328543, XP002236016 & JP 10 120788 A, May 12, 1998.

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