Rubber Compounding Materials
Vulcanization Materials
Activators


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Stearic Acid - Industrene
Stearic acid
R.E. Carroll Inc.
ï

White powder or flakes.

Single, double, triple pressed.


Pristerene 9429
Stearic acid.
M.F. Cachat
ï

Tallow based rubber grade stearic acid; titre, 52-60°C, iodine no. 11 max., acid value 192-210 and saponification value 194-212.


Magnesium Oxide

Brenntag Specialties, Inc.
ï

Magnesium oxide


Innovox 95
Calcium oxide, surface treated
Birch Chemicals Limited
ï

High purity calcium oxide, with consistent low particle size range and excellent dispersion, specifically packaged for rubber compounding.

An efficient desiccant/moisture absorber for all commonly used elastomers giving protection from porosity or blistering of rubber products which are produced in low or high-temperature cure systems. Available in pre-weighed sachets for direct mixer application.


Zinox 350
Zinc oxide
American Chemet
ï

Sp.gr. 4.9 g/cc; high surface area ZnO > 21m2/gm; precipitated; nodular; ± 99.5% -325 mesh; cream-off white.

Activator for rubber; neoprene, butyl, nitrile, EPDM, SBR, latex, etc.


Bostex 422
Aqueous dispersion of zinc oxide
Akron Dispersions, Inc.
ï

Off white liquid; total solids 59.5-63.5%; pH - 9.0-11.0.

A 60% aqueous dispersion of a conventional activator for accelerator systems used in natural and synthetic latices.


Akroform Pb3O4-90/EPR/P
Red Lead in EPR
Akrochem Corp.
ï

90% active.

Easy and safer handling; used primarily as ECO acid acceptor.


Akrochem Stearic Acid-Rubber Grade (RG)
Stearic acid
Akrochem Corp.
ï

Titer 52-64°C; iodine value 10 max.; acid no. 193-213; saponification no. 193-214; Gardner color 10 max.

Dispersing agent and accelerator activator in rubber compounds.


Akroform PbOMC-90/EPR/P
Calcined litharge in EPR
Akrochem Corp.
ï

90% active MB in pellets form.

NR and SR cure activator/acid acceptor in EPR.


Akro-Mag Green Label Bar
Magnesium oxide dispersion
Akrochem Corp.
ï

Sp.gr. 1.56; very fine dispersion; protected from loss of activity; cream color to dark tan 3lb. poly wrapped bars; easy dispersion; good storage stability; slightly less active magnesium oxide than Akro-Mag yellow bar.

Vulcanizer, activator, acid acceptor; used in polychloroprene, Hypalon; recommended at 4.0 parts/100 RHC.





Akro-Mag Blue Label Bar
Magnesium oxide dispersion
Akrochem Corp.
ï

Sp.gr. 1.51; very fine dispersion; protected from loss of activity; cream color to dark tan. 3 lb bars, easy dispersing; good storage stability; all magnesium oxide is Elastomag 170 grade; highest activity type; superior protection.

Vulcanizer, activator, acid acceptor; used in polychloroprene, Hypalon; recommended at 4.0 parts/100 RHC.


Akro-Zinc Bar 85
Zinc oxide dispersion
Akrochem Corp.
ï

Sp.gr. 3.60, zinc oxide 85%; 6 lb. bar; 54 lb carton.

Use in place of zinc oxide powder on a part for part basis; use for applications where a pre-wetted product is desirable; G type Neoprenes where addition of zinc oxide late in mix is indicated; low hardness compounds where zinc oxide dispersion is amust.


Akrochem Untreated Zinc Oxides
Zinc oxide
Akrochem Corp.
ï

Sp.gr. 5.6; primary zinc oxide; odorless, non-toxic, fine white powder.

NR, SR, latex activator, reinforcer, good inorganic color; add directly to rubber, as water dispersion to latex.


Akrochem Treated Zinc Oxides
Zinc oxide surface treated with proprionic acid
Akrochem Corp.
ï

Sp.gr. 5.6; primary zinc oxide; odorless, non-toxic, fine white powder.

NR, SR activator reinforcer, good inorganic color; add directly to rubber, easy dispersing.


Akrochem PEG 3350
Polyethylene glycol
Akrochem Corp.
ï

Powder/Granules; sp.gr. 1.15; melt point 130°F; soluble in water

As an activator for silica/mineral filled compounds; aso as a process aid/lubricant; typical dosages 1.5 to 3.0 phr; higher levels are used to add polarity to mircrowave-cured EPDMs.


Akrochem E-9347 Urea OT
Oil treated urea
Akrochem Corp.
ï

Sp.gr. 1.30; free flowing white powder, mp 129-134°C; slight water solubility.

Blow promoter for nitrogen blowing agents; also a cure activator for thiazole accelerators in CR, IIR, NBR, NR and SBR.


Akrochem Zinc Oxide 35
Precipitated zinc oxide
Akrochem Corp.
ï

White to light yellow powder; sp.gr. 5.6; surface are 35 m2/gram.

Effective activator of extremely fine particle size; use in NR, SR and latex applications; high activity permits 20-30% reduction in loading compared to regular zinc oxide; useful in transparent and translucent rubber articles; crosslinking agent for CR and XNBR.


Akrochem Stearic Acid-TP
Mixture of stearic and palmitic acids
Akrochem Corp.
ï

White flakes; sp.gr. 0.85; iodine <1; Gardner color <1.

High purity triple pressed (TP) stearic acid used in rubber compounding as an activator; excellent color, low iodine; plasticizer, process aid and internal/external lubricant.


Akrochem 9930 Zinc Oxide Transparent
Precipitated basic zinc carbonate
Akrochem Corp.
ï

White powder; sp. gr. 3.5; 99% through 200 mesh.

Accelerator, activator of extremely fine particle size; particularly useful for transparent and translucent rubber articles (NR and SR); acid acceptor in CR adhesive where transparency is required; very good dispersion characteristics.


Elastomag 100
Magnesium oxide
Akrochem Corp.
ï

White powders. sp. gr, 3.2, surface area 100m2/gm, avg, sp gr, 2.5; shipped in 50# multiwall bags and PE pouches; protect from air and moisture.

For halogenated elastomers; vulcanizing and curing; activator, acid acceptor.





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Click companies below for more information about Activators

Suppliers listed
on this page

R.E. Carroll Inc.

M.F. Cachat

Brenntag Specialties, Inc.

Birch Chemicals Limited

American Chemet

Akron Dispersions, Inc.

Akrochem Corp.

     

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