Rubber Compounding Materials
Vulcanization Materials
Activators


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Function & Compounding


Laurex
Zinc salts of lauric and related fatty acids
Chemtura
ï

Sp.gr. 1.18; tan flaked solid; mp about 107-118°C, but not definitely specified; good storage stability.

For CR, NBR, NR, SBR and their latices; recommended for tire carcass and tread compounds, extruded stocks, proof goods; activates thiazole accelerators and their derivatives; evens out and advances curing rates of off-grade rubbers deficient in natural fatty acids. Low blooming from cured and uncured compounds; much less blooming than many other fatty acid softeners; non-discoloring; melts, disperses readily.


Zinc Stearate Line
Zinc stearate
Harwick Standard
ï

White powder or prill; Melt pt. 120C;available in high bulk or densified grades including USP and wettable

Mutiple functions in elastomeric compounds including lubricant,acid scavenger, viscosity modifier or cure activator.


CR 4
ZnO
Western Reserve Chemical
ï

White powder; 99.9% passes 325 mesh; sp.gr. 5.6; surface area 5 m2/g; 99.9% ZnO min.

Activator for NR, SR, reinforcer and pigment.


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Chemtura

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