Rubber Compounding Materials
Vulcanization Materials
Activators


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Stan-Mag Products
Magnesium oxide
Harwick Standard Distribution Corporation
ï

A variety of of magnesium oxide based products in powder, bead, or bar form


CR-30
Zinc oxide
Harwick Standard Distribution Corporation
ï

High purity French process , white powder, sp.gr 5.6;large particle size,low surface area and treated with propionic acid

For natural and synthetic rubbers and latices as cure activator and/or vulcanizer; add directly to rubber; surface treated grade provides easier, faster incorporation.


Stearic acid F-2500
Vegetable based stearic acid
Harwick Standard Distribution Corporation
ï

Non-toxic off-white powder, faint odor; titre - minimum 50C, iodine number 10 maximum; acid number - 195 minimum.

Vegetable based grade of stearic acid used to activate rubber and latex as a dispersing agent, lubricant stabilizer and processing aid


CR-42
Zinc oxide
Harwick Standard Distribution Corporation
ï

High purity French process, white powder,sp.gr 5.6; small particle size and high surface area available with surface treatment (CR-420)

For natural and synthetic rubbers and latices as cure activator where high reactivity and high purity are required.


CR-4
Zinc oxide
Harwick Standard Distribution Corporation
ï

High purity French process ,white powder, sp.gr. 5.6; medium particle size and medium surface area; available with surface treatment (CR-40)

For natural and synthetic rubbers and latices as cure activator and/or vulcanizer; add directly to rubber.


CR-3
Zinc oxide
Harwick Standard Distribution Corporation
ï

High purity French process , white powder, sp.gr 5.6;large particle size,low surface area ; also available with surface treatment CR-30

For natural and synthetic rubbers and latices as cure activator and/or vulcanizer; add directly to rubber


Stan-Mag 1326 HR
A proprietary blend of zinc and magnesium oxides.
Harwick Standard Distribution Corporation
ï

Sp.gr. 3.17; powder

Component blend vulcanization system for CR polymers


Stan-Mag AG
Magnesium oxide
Harwick Standard Distribution Corporation
ï

Sp.gr. 3.22; surface area- 140 m2g;powder

A high activity, high surface area magnesium oxide for stabilizing chlorinated polymers- CR,CSM,and CPE


Stearic Acid F-300
Stearic acid
Harwick Standard Distribution Corporation
ï

Stearic acid; non-toxic white powder; color (Lovibond), 1.5Y/0.2R; titer, 58-61C; iodine number 1 max.; acid number 200-206.

Rubber activator; dispersing agent; lubricant; stabilizer; processing aid; latex activator.


CR-4USP-2
Zinc oxide
Harwick Standard Distribution Corporation
ï

High purity, French process USP Grade sp.gr. 5.6

For natural and synthetic rubbers and latices as cure activator and/or vulcanizer; add directly to rubber





Stan- Mag 112
Magnesium oxide
Harwick Standard Distribution Corporation
ï

Sp.gr 3.22;surface area- 35 m2/g;powder

Low activity,low surafce area magnesium oxide


Mastermix Lime 2182 Paste-70
70% lime
Harwick Standard Distribution Corporation
ï

Sp. gr. 1.97

Dispersed form of Calcium Oxide for use in natural and synthetic rubbers.


Natro-Cel 35-A
72% trimethyl propane trimethacrylate on silica powder
Harwick Standard Distribution Corporation
ï

Sp.gr. 1.23; dustless powder

Co-agent for peroxide cured elastomers


Mixland + Zinc oxide Masterbatch
Zinc oxide -80 % active in a proprietary Mixland + binder
Harwick Standard Distribution Corporation
ï

Pellets- 140 micron filtered

Dispersion for easy incorporation;see also CR Zinc oxides


Natro-Cel TATM-A
72% Triallyl Trimelliate on silica powder
Harwick Standard Distribution Corporation
ï

Sp.gr. 1.15;Dustless powder

Excellent activator for cured EPDM and CPE.


Desical P
80% calcium oxide in a naphthenic oil binder system
Harwick Standard Distribution Corporation
ï

Sp.gr. 2.24; paste

A premium paste dispersion for rapid mixing in rubber compounds; a cure activator; eliminates porosity due to moisture related blistering; used in low pressure or pressureless continuous curing of rubber extrusion products such as automotive weatherseals and pipe insulation.


Stan-Mag Bar
65% MgO in a proprietary binder
Harwick Standard Distribution Corporation
ï

Sp.gr. 1.80;bar form

Medium-high activity grade MgO used as an activator, acid acceptor and scorch protector for halogenated polymers such as CR and CSM


Stan-Mag Mini Beads
Medium light calcined, high activity magnesium oxide in a paraffinic oil binder system
Harwick Standard Distribution Corporation
ï

Sp.gr. 1.80; small bead form; 65% activity.

Pre-wet form which is non-dusty, free flowing and protected from the deleterious affects of humidity; use for rapid dispersion in halogenated polymers as an acid acceptor, scorch protector and curative.


PolyBound 498 Zinc Oxide
85% ZnO in a proprietary binder
Harwick Standard Distribution Corporation
ï

Sp.gr. 3.25; crumb

Polymer bound powder form of zinc oxide; dust free form; incorporates rapidly.


Mastermix Calcium Oxide 6119 Paste-80
80% Calcium Oxide in a DIDP binder
Harwick Standard Distribution Corporation
ï

Sp. gr. 2.27

Dispersed form of Calcium Oxide for use in natural and synthetic rubbers.





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