Thiouronium salt as anti-reversion agent in a vulcanizable...

Details Thiouronium salt as anti-reversion agent in a vulcanizable... Thiouronium salt as anti-reversion agent in a vulcanizable...

2008-04-15

2008-04-15

Choi, Ling-Sui (Department: 1796)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C525S332600, C525S332700

Reexamination Certificate

active

11009085

ABSTRACT:
A rubber composition based on at least (i) an elastomer, (ii) a reinforcing filler and (iii) a thiouronium salt or an analogue of a thiouronium salt of the formula (I) below:in-line-formulae description="In-line Formulae" end="lead"?A-S—Y—S-A   (I)in-line-formulae description="In-line Formulae" end="tail"?in which,A represents a groupassociated respectively with a molecule HX or an ion X—, X denoting a halogen atom andZ denotingIncorporating the thiouronium salt into the vulcanizable rubber composition makes it possible to substantially reduce the reversion rate of the vulcanized rubber composition.

REFERENCES:
patent: 3801531 (1974-04-01), Berejka
patent: 3979369 (1976-09-01), Trivette, Jr.
patent: 6326438 (2001-12-01), D'Sidocky et al.
patent: 0 823 453 (1998-02-01), None
patent: 1 538 328 (1968-09-01), None
patent: 1178242 (1970-01-01), None
Search Report issued in International Application No. PCT/EP03/06160.

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