Rubber Compounding Materials
Vulcanization Materials
Activators
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Tradename
Composition
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Supplier
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Properties
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Function
& Compounding
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Mastermix Zinc Oxide 4849 Slab-90
90% Zinc Oxide in an EPR binder
HEXPOL Compoundingï |
Sp. gr. 3.73
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Dispersed form of medium surface area zinc oxide for use in natural and synthetic rubbers.
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Mastermix Zinc Oxide 5118 Slab-90
90% Zinc Oxide in an EPR binder
HEXPOL Compoundingï |
Sp. gr. 3.75
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Dispersed form of a high surface area zinc oxide for use in natural and synthetic rubbers.
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Litharge 33 Sublimed
99.0% PbO red lead content 0.04%, Free lead content
Flow Polymers LLCï |
Sp.gr. 9.5.
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Used in rubber compounding similarly to litharge 28 where a smaller particle size is desired; a uniformly high purity material with a light tan color.
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Stan-Mag 1326 HR
A proprietary blend of zinc and magnesium oxides.
Harwick Standardï |
Sp.gr. 3.17; powder
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Component blend vulcanization system for CR polymers
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Rhenofit 2120
Active magnesium oxide
Rhein Chemie Corporationï |
Sp.gr. 3.57; white powder
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An active magnesium oxide especially selected for the use in the rubber processing industry; improves the processing safety of rubber compounds based on CR, CSM, CM and CIIR; raises the critical temperature of basic accelerators and thus prevents scorching; In acid accelerators, the activiting temperature of acid accelerators is decreased; in polymers containing chlorine, especially CR, it serves as an acid acceptor and thus improves the aging properties of the vulcanizates; in cold cured rubber coated fabrics, Rhenofit 2120 is used to neutralize acid traces; moduli are generally increased by its addition.
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Zinc Oxide Dispersion - Taber brand
American and French zinc oxide and SBR
Taber Inc.ï |
A polymer masterbatch of 80% American or French zinc oxide and SBR.
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Improve dispersion and processing.
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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.
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A 60% aqueous dispersion of a conventional activator for accelerator systems used in natural and synthetic latices.
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Kenmix
Barium carbonate/P 80/20
Flow Polymers LLCï |
Sp.gr. 2.57
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Activator in paste form in Kenflex P.
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Zinc Oxide Transparent
Basic zinc carbonate
Lanxess Corporationï |
Sp. gr, 3.5; white to light yellowish powder; zinc content as zinc oxide approx. 72%; shipped: bag.
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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
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Kenmix
C-5 paste
Flow Polymers LLCï |
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Activator for polysulfide compounds.
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Akroform PbOMC-90/EPR/P
Calcined litharge in EPR
Akrochem Corp.ï |
90% active MB in pellets form.
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NR and SR cure activator/acid acceptor in EPR.
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Hallco CAOP
Calcium hydroxide/DOP dispersion
The HallStar Co.ï |
Sp.gr. 1.05; (80% calcium hydroxide) finely dispersed in DOP; free flowing powder, dustless.
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Recommended for mill and internal mixing; offers better dispersion and safety.
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Fluorocal H; Fluorocal O
Calcium hydroxide; calcium oxide
HB Chemicalï |
Tightly controlled particle size distribution for calcium hydroxide H-20, H-30; uniform, consistent particle size calcium oxide O-15.
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Intended for FKM compounds where superior dispersion and consistency is required; several grades and packages available; allows single pass FKM mixing.
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Parasec R
Calcium oxide (75% active)
Parabor Industria E Comercio de Produtos Quimicos LTDAï |
Creamy-gray powder; sp.gr. 2.20.
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Dessicant in compounding for continuous cures; prevents porosity in rubber vulcanizates; acceleration activator.
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Westco CAO-80
Calcium oxide disp.
Western Reserve Chemicalï |
Sp.gr. 2.1; a fine dispersion of CAO in a high viscosity processing oil.
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Activator, desiccant, absorbs moisture and prevents porosity.
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Westco CAO-90
Calcium oxide dispersion
Western Reserve Chemicalï |
Sp.gr. 2.44; 86% min. calcium oxide in a high viscosity process oil
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Activator; dessicant, absorbs moisture and prevents porosity in rubber.
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Innovox 95
Calcium oxide, surface treated
Birch Chemicals Limitedï |
High purity calcium oxide, with consistent low particle size range and excellent dispersion, specifically packaged for rubber compounding.
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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.
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Stan-Mag MBZ
Co-dispersion of Magnesia and Zinc
Harwick Standardï |
Free flowing powder, 2.0 sp. gr., 65% active
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Proprietary blend of zinc and magnesium oxides for polychloroprene vulcanization. Designed for use at 3 - 5 phr in polychloroprene to replace all magnesium and zinc oxide in a formulation.
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Rhenofit 1987
Combination of activating substances based on urea
Rhein Chemie Corporationï |
Sp.gr. approx. 1.5; white powder.
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Curing activator and promoter for reinforcing fillers
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Rhenofit 2642
Combination of activating substances based on urea bound to high activity silica
Rhein Chemie Corporationï |
Sp.gr.. approx. 1.50; white powder, slightly hygroscopic
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Accelerator activator for the vulcanization of CO and ECO.
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