Rubber Compounding Materials
Vulcanization Materials
Activators


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Function & Compounding


Rhenofit 1600
Combination of urea derivatives and dispersing agent
Rhein Chemie Corporation
ï

Sp.gr. approx. 1.25; light-colored aqueous paste

Blow promoter and deodorizer as well as vulcanization activator with built-in scorch retarder.


Rhenofit EDMA/S
70% ethylene glycol dimethacrylate, 30% silica
Rhein Chemie Corporation
ï

Sp.gr. approx. 1.25; white powder, non-dusting, non-staining

Crosslinking activator for the peroxide vulcanization of synthetic rubbers.


Rhenofit 1987
Combination of activating substances based on urea
Rhein Chemie Corporation
ï

Sp.gr. approx. 1.5; white powder.

Curing activator and promoter for reinforcing fillers


MgO

Rhein Chemie Corporation
ï

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


Rhenofit 2642
Combination of activating substances based on urea bound to high activity silica
Rhein Chemie Corporation
ï

Sp.gr.. approx. 1.50; white powder, slightly hygroscopic

Accelerator activator for the vulcanization of CO and ECO.


Rhenofit D/A
Highly reactive magnesium oxide
Rhein Chemie Corporation
ï

Sp.gr. 3.60; white powder

A highly reactive magnesium oxide intended specifically for use in the rubber processing industry; improves the processing safety of CR, CSM, CM and CIIR based rubber compounds by increasing the critical temperature of basic accelerators; reduces the susceptibility of rubber compounds to scorching; In acid accelerators, it lowers the necessary activation temperature; in polymers containing halogen, and particularly in CR, it acts as an acid acceptor, thereby improving aging properties; in cold-cured fabric proofing, it serves to neutralize traces of acid; moduli are generally increased by Rhenofit D/A.


Poly-Dispersion T(HRL)D-90
Fine particle size litharge in an EPDM binder
Rhein Chemie Corporation
ï

Sp.gr. 4.75; litharge 90%; very fine dispersion in elastomeric slab form, scored, dusted, and separated with PE.

chlorosulfonated polyethylene stabilizer, add in first step in mixing cycle; provides processing and handling safety, excellent dispersion, uniform cures.


Poly-Dispersion ERD-90
Red Lead in an EPR binder
Rhein Chemie Corporation
ï

Sp.gr. 4.57; Red Lead, 90%; very fine dispersion in elastomeric slab form, scored, dusted and separated with PE.

To produce low water absorption polychloroprene compounds and EPDM wire; provides processing and handling safety, excellent dispersion, uniform cures curing activator for CR, IIR, CSM.


Mag-Beads
Magnesium oxide beads
Rhein Chemie Corporation
ï

Sp.gr. 1.76; odorless, tan, free-flowing beads in high flash organic binder.

For CR, CSM, PE, NBR, polysulfides; activator, acid acceptor and vulcanizing agent; this dispersion in bead form resists hydration, handles easily and incorporates rapidly.


Elast-O-Cal 90
90% calcium oxide in oil binder
Rhein Chemie Corporation
ï

Sp.gr. 2.73; off-white wetted powder

An efficient moisture absorber for all commonly used elastomers imparting excellent protection against porosity or blistering in rubber products produced in low-pressure, high-temperature cure systems such as microwave units, LCM, hot air cures or fluidized bed units.





Zic-Stick 'SG'
90% zinc oxide
Rhein Chemie Corporation
ï

Sp. gr. approx. 3.66; very fine particle size

Activator for NR's and SR's, vulcanizer for polychloroprene and other halogenated elastomers, superior activity.


Magnesium Oxide (MgO)

Rhein Chemie Corporation
ï

See also Mag-Paste, Mag-Beads, Rhenofit 2060, Rhenofit 2120, Rhenofit 2150, Rhenofit D/A, Rhenogran G-1, Rhenofit G-3, Rhenogran MgO-75, Scorchguard O


Rhenofit TRIM/S
70% trimethylolpropane trimethacrylate, 30% silica
Rhein Chemie Corporation
ï

Sp.gr. approx. 1.27; white powder, non-dusting, non-staining

Crosslinking activator for the peroxide vulcanization of synthetic rubbers.


FE(Ca(OH)2)-68
68% calcium hydroxide in Carnauba wax
Rhein Chemie Corporation
ï

Sp.gr. 1.64; free flowing bead. (see Calcium Hydroxide).

FE(Ca(OH)2)-68 dispersion is a protected form of calcium hydroxide for general use in fluoroelastomer compounding; will improve dispersion, property consistency, and reduce mixing time; for safe handling of calcium hydroxide, FE (Ca(OH)2)-6


Zic-Stick '85'
Zinc oxide dispersion
Rhein Chemie Corporation
ï

Sp.gr. 3.66; zinc oxide content approx 90%; very fine dispersion of highly active zinc oxide

Activator for NR and SRs; vulcanizer for polychloroprene and other halogenated elastomers; superior activity coupled with rapid complete incorporation enables 3 parts of Zic Stick 85 to replace 5 parts of zinc oxide powder in most applications.


Rhenomag P 2
100% 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.


Rhenomag G 3
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.


Poly-Dispersion GRD-90
90% Red Lead oxide in an ECO binder
Rhein Chemie Corporation
ï

Sp.gr. 5.18; orange slabs

Used as a cure activator in ECO cure systems; the red lead acts as an acid scavenger for the cure system allowing a more rapid cure.


FE(MAG-HA)-55
55% magnesium oxide in Carnauba wax
Rhein Chemie Corporation
ï

Sp.gr. 1.60; free flowing bead.

FE(MAG-HA)-55 dispersion is a protected form of magnesium oxide for general use in fluoroelastomer compounding; will improve dispersion, property consistency, and reduce mixing time.


FE(CaO)-75
75% calcium oxide in Carnauba wax
Rhein Chemie Corporation
ï

Sp.gr. 2.09; free flowing bead. (see Calcium Oxide).

FE(CaO)-75 dispersion is a protected form of calcium oxide for general use in fluoroelastomer compounding; wwill improve dispersion, property consistency, and reduce mixing time; for safe handling of calcium oxide, FE(CaO)-75 should be specified.





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