Rubber Compounding Materials
Vulcanization Materials
Activators


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Westco CAO-80
Calcium oxide disp.
Western Reserve Chemical
ï

Sp.gr. 2.1; a fine dispersion of CAO in a high viscosity processing oil.

Activator, desiccant, absorbs moisture and prevents porosity.


Westco CAO-90
Calcium oxide dispersion
Western Reserve Chemical
ï

Sp.gr. 2.44; 86% min. calcium oxide in a high viscosity process oil

Activator; dessicant, absorbs moisture and prevents porosity in rubber.


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.


CR 40
Zinc oxide
Western Reserve Chemical
ï

White powder; 99.9% passes through 325 mesh; sp. gr. 5.6; 99.9% zinc oxide; surface area 5 m2/g; surface treated with propionic acid.

Activator; surface treated to improve dispersion into rubber.


CR 4 USP
Zinc oxide
Western Reserve Chemical
ï

White powder; 99.9% passes through 325 mesh; sp. gr. 5.6; 99.9% zinc oxide; heavy metal content, carbonate content and alakalinity pass USP tests.

Activator; meets USP specifications.


Westco MO-140
Magnesium oxide
Western Reserve Chemical
ï

Fine white powder; surface area 45 m2/g.

Scorch retarder, curing agent and acid acceptor in polychloroprene and other chlorinated polymers.


CR 41
Zinc oxide
Western Reserve Chemical
ï

White powder; 99.9% passes through 325 mesh; sp. gr. 5.6; 99.9% zinc oxide; surface area 6 m2/g.

Fine particle size, fast curing.


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