Rubber Compounding Materials
Vulcanization Materials
Activators


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Function & Compounding


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

Sp.gr. approx. 2.2 white powder

Crosslinking activator for fluoro-elastomers.


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.


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 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.


Rhenofit TAC/S
70% triallyl cyanurate 30% silica
Rhein Chemie Corporation
ï

Sp.gr. 1.25; fine white crumbles

Cross-linking activator for peroxide vulcanization; technical molded and extruded articles based on EPDM, EPM, CM and others, e.g., profiles, seals, cable coverings and bushings.


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.


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.


Rhenogran HPCA-70
60% methyl-2-mercaptobenzimidazol and 1,8 diazabicyclo-5,4,0 undec-7-en, in a polymer binder
Rhein Chemie Corporation
ï

Sp.gr. 1.1; off white granules

Can replace MgO in polychloroprene compounds; excellent heat aging properties can be achieved; replacement of MgO in blends with HIIR compounds is possible.


Rhenogran MgO-75
75% magnesium oxide with dispersion aids and polymeric binder
Rhein Chemie Corporation
ï

Sp.gr. 2.00; white to gray pellets

Curing activator and acid acceptor particularly suitable for polychloroprene rubber (CR) and adhesives





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.


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 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 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.


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.


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.


SA-590
Rubber grade, vegetable based stearic acid
Sovereign Chemical Company
ï

Flake, sp. gr. 0.84

Vegetable based grade of stearic acid designed for use in rubber compounding as an activator; also used in esters for various lubricant applications as metal working and textile lubricants, and in the production soaps, emulsifiers, and metallic stearates.


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


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.





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