Rubber Compounding Materials
Vulcanization Materials
Activators


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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.


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.


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.


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.


Rhenofit CF
Specially treated very fine Ca(OH)2
Rhein Chemie Corporation
ï

Sp.gr. approx. 2.2 white powder

Crosslinking activator for fluoro-elastomers.


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.


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


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.





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.


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.


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.


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.


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.


Poly-Dispersion JZFD-90P
88% zinc oxide in a NR binder
Rhein Chemie Corporation
ï

Sp.gr. 3.50; white pellets

Vulcanizing activator for use in natural and synthetic rubber compounds.


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.


Poly-Dispersion TRD-90
90% red lead oxide in an EPDM/EVA binder
Rhein Chemie Corporation
ï

Sp.gr. 4.58; orange slabs

Preferably used as an activator in acid resistant compounds. It considerably reduces the swelling of vulcanizates in water; is suitable as an oxidizing agent for the vulcanization of butyl rubber with p-quinone dioxime; can be used to improve the heat resistance in peroxide cured CPE compounds; is not recommended for use in thiadiazole cured CPE; filler in compounds for protective covering, because of the high absorption capacity to x-rays.


Calcium Oxide

Rhein Chemie Corporation
ï

See Rhenogran CaO-80, Rhenofit C, Elast-O-Sperse RS-1, FE(Ca(OH)2)-68, FE (CaO)-75 and Elast-O-Cal S-80, Elast-O-Cal 80, Elast-O-Cal 80HT, Elast-O-Cal 80FDA,Elast-O-Cal C-75, Elast-O-Cal 90, Elast-O-Cal (G-50)-90, Elast-O-Cal P-90


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.





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