Rubber Compounding Materials
Vulcanization Materials
Activators


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Polydex E(ZNO)85

Polychem Dispersions
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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.


Polydex PPD(ZNO)75
75% zinc oxide in light process oil
Polychem Dispersions
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Sp.gr. 2.43; zinc oxide in a paste form.

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


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.


Ultra (ZNO) 88
88% zinc oxide treated with a proprietary polymeric binder
Polychem Dispersions
ï

Sp.gr. 3.50; shipped 50 lb. bags.

Semi dustless and free flowing powder.


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.


Zinc Oxide Ultra 88
88% zinc oxide treated with a proprietary polymer binder
Polychem Dispersions
ï

Sp.gr. 3.50; semi dustless and free flowing powder.

Activator for polymer cure systems; used to speed the incorporation of zinc oxide in mill or mixer compounds.


Zinc Oxide Poly Slab
85% French process zinc oxide in an EPR binder
Polymerics
ï

Sp.gr. 3.38.

Activator for natural and synthetic rubber; excellent incorporation and dispersion; very easy handling.


Red Lead Poly Slab
90% red lead in an EPR binder
Polymerics
ï

Sp.gr. 4.63; Red Lead in a rubber slab form; excellent storage stability.

Activator for NR and SRs; excellent incorporation and dispersion; very easy handling.


DOTG Poly Slab
75% EPR binder
Polymerics
ï

Sp.gr. 1.09; pellet or slab.

Predispersed activator for thiazoles; better processing safety than DPG.


Magox Premium
Magnesium oxide
Premier Magnesia, LLC
ï

Odorless, high surface area, non-toxic white powder; available in bulk or 50 lb. poly-lined bags.

For CR, CSM, PE, NBR, polysulfides; vulcanizing agent; activator; acid acceptor; useful in adhesives and polyester sheet molding compounds.





Scorchguard "O"
Magnesium oxide dispersion
Rhein Chemie Corporation
ï

Sp.gr. 1.90; buff-gray bars; very fine dispersion, protected from loss of activity

Used in chloroprene and chlorosulfanated polyethylene; gives superior protection against scorch, at process temperatures while giving excellent acceleration and vulcanization rates at cure temperatures; further aids processing by rapid incorporationand elimination of sticking to the mixer; retarder for halobutyls


Rhenofit F
Specially treated fine CaO
Rhein Chemie Corporation
ï

Sp.gr. approx. 3.0; white powder

Cross-linking modifier and desiccant for the use in fluoroelastomers.


Poly-Dispersion SR-517-50
50% Saret 517 in polymeric binder
Rhein Chemie Corporation
ï

Sp.gr. app. 1.12; encapsulated and protected form.

Crosslinkable; acrylic monomer, used in peroxide vulcanization to provide high hardness; promotes batch to batch cure rate uniformity.


Nickle Dimentyl dithiocarbamate (NDMC)

Rhein Chemie Corporation
ï

See also Curebead PB(NDMC)-70


Rhenogran CaO-80
80% CaO in polymer binder
Rhein Chemie Corporation
ï

Sp.gr. approx. 2.25; grey polymer-bound granules

Desiccant for rubber compounds of all kinds to prevent porosity.


MgO

Rhein Chemie Corporation
ï

See also Mag-Paste, Mag-Beads, Rhenogran 2060, Scorchguard O, Rhenofit: 2060,2120,2150, D/A


Rhenomag G 1
75% very acitve MgO in polymer binder
Rhein Chemie Corporation
ï

Sp.gr. 1.56; white pellets

Curing activator and acid acceptor, particularly suitable for CR and CM.


Rhenogran ZnO-85
84% ZnO in polymer binder
Rhein Chemie Corporation
ï

Sp.gr. approx. 3.03; white polymer-bound granules, problem-free dosing and mixing, excellent dispersion, fast incorporation; the bound chemical is non-dusting

Curing activator for the use in natural and synthetic rubbers, particularly CR.


Rhenogran TAC-50
50% triallyl cyanurate in polymer binder
Rhein Chemie Corporation
ï

Sp.gr. approx. 1.20, beige polymer-bound granules, problem-free dosing and mixing, excellent dispersion, fast incorporation; the bound chemical is non-dusting

Activator for the peroxide vulcanization of synthetic rubbers.


Rhenogran Pb3O4-80
80% Pb3O4-80 in ECO binder
Rhein Chemie Corporation
ï

Sp.gr. approx. 4.15; red polymer-bound granules; problem-free dosing and mixing, excellent dispersion, fast incorporation; the bound chemical is non-dusting

Curing activator for chloroprene (CR) and butyl rubber (IIR) as well as chlorosulphonated polyethylene (CSM); filler in compounds for protective covering, because of the high absorption capacity to x-rays.





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