Rubber Compounding Materials
Vulcanization Materials
Activators


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Zoco 172
French process zinc oxide
CMM
ï

High purity, odorless, fine white powder; propionic acid treated; surface area 4.00-5.49; sp. gr, 5.6; meets ASTM D79.

NR, SR, latex activator, reinforcer and hiding pigment; rapid incorporation and excellent dispersion; high cure rate.


Zoco 124
French process zinc oxide
CMM
ï

Sp.gr. 5.6; French process ZnO produced from special high grade zinc; odorless, non toxic, fine white pellet; medium surface area.

NR, SR latex activator, reinforcer and hiding pigment; low dusting, medium to fast cure rate.


Emery 531
Tallow fatty acid
Cognis
ï

Activator


SR709
Zinc mono-methacrylate
Cray Valley, a brand of Total
ï

White crystalline powder; specific gravity @ 25°Cis 1.88.

An ultra-efficient sulfur activator which develops superior modulus/cross density with excellent scorch properties and reversion proptection.


Cri-Ox-50
50% dispersion of calcium oxide on a fluorocarbon elastomer base
Cri-Tech
ï

Sp.gr. 2.11±.05; solubility - esters and ketones; appearance - opaque, off-white, slab.

Used at the 4-10 part level in fluorocarbon elastomer compounding.


Cri-Mag-M-40
40% dispersion of low activity magnesium oxide on a fluorocarbon elastomer base
Cri-Tech
ï

Sp.gr. 2.04±.05; solubility - esters and ketones; appearance - dark brown, chopped. or slab

Used at the 30-40 part level in fluorocarbon elastomer compounding.


Cri-C-50
50% dispersion of calcium hydroxide on a fluorocarbon elastomer base
Cri-Tech
ï

Sp.gr. 1.88±.05; solubility - esters and ketones; appearance - opaque, yellow, chopped or slab.

Used at the 6-12 part level in fluorocarbon elastomer compounding.


Cri-Act-45-LV
45% dispersion of a 2/1 ratio of calc. hydroxide and mag. oxide on a fluorocarbon elastomer base
Cri-Tech
ï

Sp.gr. 1.96±.05; solubility - esters and ketones; appearance - opaque, brownish yellow, chopped or slab.

Used at the 10-20 part level in fluoroelastomer compounding for consistent rheology and excellent dispersion; for use in low viscosity compounds.


Cri-Act-45
45% dispersion of a 2/1 ratio of calc. hydroxide and mag. oxide on a fluorocarbon elastomer base
Cri-Tech
ï

Sp.gr. 1.92 ±.05; solubility - esters and ketones; appearance - opaque, brownish, chopped or slab.

Used at the 10-20 part level in fluoroelastomer compounding for consistent rheology and excellent dispersion.


Cri-Act-45 1/1
45% dispersion of a 1/1 ratio of calc. hydroxide and mag. oxide on a fluorocarbon elastomer base
Cri-Tech
ï

Sp.gr. 1.98±.05; solubility - esters and ketones; appearance - opaque, brownish yellow, chopped or slab.

Used at the 10-20 part level in fluoroelastomer compounding for consistent rheology and excellent dispersion.





Cri-Mag-H-40
40% dispersion of high activity magnesium oxide on a fluorocarbon elastomer base
Cri-Tech
ï

Sp.gr. 2.04±.05; solubility - esters and ketones; appearance - dark brown, chopped or slab

Used at the 6-10 part level in fluorocarbon elastomer compounding.


Cri-FDA-45-1/1
45% disp. of codex food grade calc. hydroxide and mag. oxide in a 1/1 ratio on a fluoroelastomer base
Cri-Tech
ï

Sp. gr. 1.98±.05; solubility - esters and ketones; appearance - opaque, brownish, chopped or slab.

Used at the 10-20 part level in fluoroelastomer compounding for consistent rheology and excellent dispersion.


Unipaste (P II)
Finely ground urea with fatty acid compounds.
DJ Semichem
ï

Fine white powde; avoid moisture conditions.

Used as accelerator/activator for nitrogen releasing CBA; used as companion to DNPT blown sponges to reduce odors in sponges.


Triethanolamine
Triethanolamine
The Dow Chemical Company
ï

Sp.gr. 1.124-1.130; viscous, pale yellow liquid; slight ammonia odor; hygroscopic; Bp (150 mm). 277-279°C. pH (25% solution); 11.2 flash pt. about 360°F; d, about 9.4 lb/gal.

NR, SR, latex activator; dispersing agent neutralizes clay acidity; improves processing reduces gas permeability; somewhat increase tear resistance; sBR activator with certain accelerators; add directly.


Triethylene Glycol
Triethylene glycol
The Dow Chemical Company
ï

Sp.gr. 1.124-1.127; clear, colorless, hygroscopic liquid; Bp. 278-300°C; flash pt. 330°F; d, 9.39 lb/gal. at 20°C.

NR, SR, latex activator with non-black reinforcers.


Polyethylene Glycol EF/Enviropeg Line
Polyethylene glycol
The Dow Chemical Company
ï

Line includes Solids - Sp gr 1.22; white powder or flake PEG-E-3350, E-4000, E-6000,E-8000 and E-20,000; Melt pt.55-61°C Semi-solids - Sp.gr. 1.13; white E-1450 and E-2000; melt point 44-48° C Liquids - Sp.gr. 1.13 E-200 and E-400

Activator used in conjunction with high surface area silicas and internal lubricant in elastomeric compounds.


Stearic Acid Quimic 1012
Fatty Acid
Dynasol
ï

Rubber grade sp. gr, 0.84, white flake

Rubber activator, plasticizer, softener


Stearic Acid Quimic 1070
Fatty acid
Dynasol
ï

Triple pressed, white flake

Activator, plasticizer, softener


Litharge FlowSperse
Various percentages of litharge in different carriers
Flow Polymers LLC
ï

Paste and elastomeric dispersions.

Activator for NR and SRs.


Kenmix
Litharge/N 9/1
Flow Polymers LLC
ï

Sp.gr. 5.11

Activator in paste form in Kenflex N.





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Suppliers listed
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CMM

Cognis

Cray Valley, a brand of Total

Cri-Tech

DJ Semichem

The Dow Chemical Company

Dynasol

Flow Polymers LLC

     

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