Rubber Compounding Materials
Vulcanization Materials
Activators


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Zinc Oxide Transparent
Basic zinc carbonate
Lanxess Corporation
ï

Sp. gr, 3.5; white to light yellowish powder; zinc content as zinc oxide approx. 72%; shipped: bag.

A very highly disperse accelerator activator without pigmenting properties; excellent in the manufacture of transparent rubber goods and adhesives; acts as an activator in latex applications


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 85PD

ECM Chemicals, LLC
ï

Sp.gr. 2.36 (typical); 85% by weight; powdered dispersion of pulverized (325) CaO in proprietary binder; packaged in 5-25 lb. perweighs

Desiccant; prevents porosity in rubber compounds due to moisture.


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.


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 80

ECM Chemicals, LLC
ï

Sp.gr. 2.23 (typical); 82% by weight, putty 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.


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.


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.


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





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.


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.


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.


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

Sp.gr. 2.10; white powder.

Used in fluoroelastomers.


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.


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


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


Polydex M(TEA)75
75% TEA on a Microcel E carrier
Polychem Dispersions
ï

Sp.gr. 1.29; triethanolamine in a powdered form.

Easier handling and faster incorporation for mill and internal mixing.





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Suppliers listed
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Lanxess Corporation

Littlern Corporation

ECM Chemicals, LLC

Natrochem

Parabor Industria E Comercio de Produtos Quimicos LTDA

Perl Pigments, LLC

Polychem Dispersions

     

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