Rubber Compounding Materials
Vulcanization Materials
Activators


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Dynamide
Urea powder formulated to improve processing and functionality.
Littlern Corporation
ï

Sp.gr. 1.34; fine white powder; avg. particle size less than 10 micron.

Activator for nitrogen blowing agents; lowers decomposition temperature; reduces odor produced by some blowing agents; secondary accelerator; component of nitrosamine-free curing systems.


Mor-Cal 90

ECM Chemicals, LLC
ï

Sp.gr. 2.61 (typical); 90% by weight, powdered dispersion of pulverized CaO in oil; available in 5-25 lb. perweighs

Desiccant; minimizes porosity due to moisture in LCM rubber extrudates.


Mor-Cal 95

ECM Chemicals, LLC
ï

Sp.gr. 2.91 (typical); 95% by weight, powdered dispersion of pulverized CaO in oil; available in 5 up to 25 lb preweighs

Desiccant; minimizes porosity in rubber compounds due to moisture.


TEA-DLC-A
72% triethanolamine on silica powder
Natrochem
ï

Sp.gr. 1.30; dustless powder; shipped: bag.

NR, SBR activator; neutralizes clay acidity; add directly; incorporates rapidly.


Natro-Cel TATM-A
72% Triallyl Trimelliate on silica powder
Natrochem
ï

Sp.gr. 1.15;Dustless powder

Excellent activator for cured EPDM and CPE.


SR 206 DLC-A
Ethylene dimethacrylate 72% liquid on silica powder
Natrochem
ï

Sp.gr. 1.05, off-white dustless powder polymerizable; shipped bag.

For peroxide cure of BR, CR, EPDM, EPM, IR, NBR, acrylics, urethanes, plasticizers during mixing; hardener.


SR 203 DLC-A
72% liquid tetrahydrofurfuryl methacrylate on silica powder
Natrochem
ï

Off-white dustless powder; shipped bag.

Vulcanizing coagent for peroxide cure, plasticizer during mixing; hardener.


Natro-Cel 35-A
72% trimethyl propane trimethacrylate on silica powder
Natrochem
ï

Sp.gr. 1.23; dustless powder

Co-agent for peroxide cured elastomers


Parasec R
Calcium oxide (75% active)
Parabor Industria E Comercio de Produtos Quimicos LTDA
ï

Creamy-gray powder; sp.gr. 2.20.

Dessicant in compounding for continuous cures; prevents porosity in rubber vulcanizates; acceleration activator.


Paramag O
Magnesium oxide
Parabor Industria E Comercio de Produtos Quimicos LTDA
ï

Fine white powder; sp.gr. 3.30.

Activator - acid acceptor for CR and fluoroelastomers.





Parax Fluor
High purity calcium hydroxide
Parabor Industria E Comercio de Produtos Quimicos LTDA
ï

Sp.gr. 2.10; white powder.

Used in fluoroelastomers.


Actone
Surface coated urea
Parabor Industria E Comercio de Produtos Quimicos LTDA
ï

Fine white powder; sp. gr. 1.32; slightly hygroscopic.

Activator for blowing agents; reduces odor of DNPT blowing agents; activator for MBT, MBTS and dithiocarbamates.


Grade 185
Zinc oxide
Perl Pigments, LLC
ï

ZnO-99.3%, Pb-.09%, Fe-.02%, CD-.03%, sulfur-.10%, insoluble-.08%.

Accelerator, activator, vulcanizer


Grade 312
Zinc oxide
Perl Pigments, LLC
ï

ZnO-99.3%, Pb-.09%, Fe-.02%, CD-.03%, sulfur-.10%, insoluble-.08%.

Accelerator, activator, vulcanizer


Grade 318 American Process
Zinc oxide
Perl Pigments, LLC
ï

ZnO-99.3%, Pb-.09%, Fe-.02%, CD-.03%, sulfur-.10%, insoluble-.08%.

Accelerator, activator, vulcanizer


Grade 318T American Process
Zinc oxide treated
Perl Pigments, LLC
ï

ZnO-99.3%, Pb-.09%, Fe-.02%, CD-.03%, sulfur-.10%, insoluble-.08%.

Accelerator, activator, vulcanizer


Polydox C-80
80% CaO in a napthenic oil binder
Polychem Dispersions
ï

Sp.gr. 2.07; calcium oxide paste dispersion

An efficient moisture absorber for all commonly used elastomers giving protection from porosity or blistering of rubber products produced in low or high-temperature cure systems.


Polydox C-90
90% CaO, oil treated
Polychem Dispersions
ï

Sp.gr. 2.43; calcium oxide, oil treated in a powder form.

Similar to Polydex C-80; is also used as a dessicant in vinyl plastisols


Polydex PPD(ZNO)75
75% zinc oxide in light process oil
Polychem Dispersions
ï

Sp.gr. 2.43; zinc oxide in a paste form.

Paste form for better incorporation in soft compounds or for late mixer additions.


Polydex E(ZNO)85

Polychem Dispersions
ï

Sp.gr. 3.05; fine particle French process zinc oxide in a soft rubber slab; shipped in 50# boxes.

Used where batch to batch uniformity and excellent dispersion is essential; for mill or mixer addition.





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Suppliers listed
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Littlern Corporation

ECM Chemicals, LLC

Natrochem

Parabor Industria E Comercio de Produtos Quimicos LTDA

Perl Pigments, LLC

Polychem Dispersions

     

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