Rubber Compounding Materials
Vulcanization Materials
Activators


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Stan-Mag MLW
Lightly calcined magnesium oxide
Harwick Standard Distribution Corporation
ï

Sp.gr. 3.22; surface area- 115m2/g; 98% passes 325 mesh

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


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

Sp.gr. 2.10; liquid

Dispersion provides rapid incorporation into liquid systems, such as vinyl plastisols, and eliminates porosity due to moisture related blistering; used for pressureless and fusion processes for plastics.


Polyethylene Glycol EF/Enviropeg Line
Polyethylene glycol
Harwick Standard Distribution Corporation
ï

Line includes Solids - Sp gr 1.22; white powder or flake PEG-E-3350, E-4000, E-6000,E-8000 and E-20,000; Melt pt.55-61C Semi-solids - Sp.gr. 1.13; white E-1450 and E-2000; melt point 44-48 C Liquids - Sp.gr. 1.13 E-200 and E-400

Activator used in conjunction with high surface area silicas and internal lubricant in elastomeric compounds.


Stearic Acid F-2000
Stearic acid
Harwick Standard Distribution Corporation
ï

Non-toxic off-white powder, faint odor; titre - minimum 52C, iodine number 20 maximum; acid number - 195 minimum.

Rubber grade lower cost grade of stearic acid used to activate rubber and latex as a dispersing agent, lubricant stabilizer and processing aid.


Stearic Acid F-1500
Stearic acid
Harwick Standard Distribution Corporation
ï

Non-toxic white powder; faint odor; titer, 58-62C; iodine number, 15 max.; acid number, 200-207; sap number 201-208.

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


Stan-Mag DS2
Magnesium oxide
Harwick Standard Distribution Corporation
ï

Sp.gr. 3.22;surface area- 165 m2g; powder

A high activity ,high surface area magnesium oxide for use as an acid acceptor in chlorinated polymers CR,CSM and CPE


Calcium Oxide HP
High purity calcium oxide
The HallStar Co.
ï

A high purity, very dry, conveniently packaged calcium oxide for rubber compounding.

Used in fluoroelastomer compounding; also used as a desiccant in compounding for continuous cures.


Suprmix Triethanolamine 85
Triethanolamine - silicate blend
The HallStar Co.
ï

Sp.gr. 1.277; light buff, non-dusting powder; pressure sensitive; shipped: fiber drums.

NR, SBR, latex activator; dispersing agent; use in Hi-Sil, Silene and Zeolite loaded stocks; use 3-6% on filler content.


Calcium Hydroxide HP
High purity calcium hydroxide
The HallStar Co.
ï

Sp.gr. 2.08; Odorless, dry powder; conveniently packaged.

For NR, SRs, fluoroelastomers, latexes; speeds up cure; prevents product porosity; add directly.


Hallco CAOP
Calcium hydroxide/DOP dispersion
The HallStar Co.
ï

Sp.gr. 1.05; (80% calcium hydroxide) finely dispersed in DOP; free flowing powder, dustless.

Recommended for mill and internal mixing; offers better dispersion and safety.





Kadox 911C
French process zinc oxide, surface treated
The HallStar Co.
ï

99.1% ZNO; 99.98% through 325 mesh; 0.12 average micron particle size.

Surface treatment promotes rapid incorporation and dispersion into rubber.


Kadox 720
French process zinc oxide
The HallStar Co.
ï

99.6% ZNO, 99.99% through 325 mesh; 0.21 average micron particle size

Activator with moderate reinforcement and good dispersion.


Kadox 911
French process zinc oxide
The HallStar Co.
ï

99.6% ZNO; 99.99% through 325 mesh; 0.12 average micron particle size.

Fine particle size and high purity zinc oxide.


Kadox 720-C
French process zinc oxide, surface coated
The HallStar Co.
ï

99.2% ZNO; 99.99% through 325 mesh; 0.21 average micron particle size.

Surface treatment lends better processing and dispersion properties to the standard zinc oxide.


Stearic Acid
Rubber grade stearic acid
The HallStar Co.
ï

Sp.gr. 0.84' white flakes, mild fat odor; non-toxic; mp, 70°C; idine no, 9.5, titre 52°C, acid number 197-209.

For NR, SRs (except IIR), latexes; activator; plasticizer; softener; gives acid-type activation; improves processing; aids filler and pigment dispersion; add directly.


Kenmix
Red lead/N 9/1
Flow Polymers LLC
ï

Sp.gr. 4.93

Activator in paste form in Kenflex N.


Ken-Zinc
Zinc oxide - bar form
Flow Polymers LLC
ï

Activator in bar form


Cadmium Oxide FlowSperse
Various percentages of cadmium oxide in different carriers
Flow Polymers LLC
ï

Paste and elastomeric dispersions

Activators for high heat resistant cure systems, prevents porosity in vulcanizates; dessicant.


MgO, Sovsperse
Magnesium oxide, various active contents on proprietary binder
Flow Polymers LLC
ï

Pellets or slabs

Activator, acid receptor and stabilizer for CR, CSM, chlorinated IIR, chlorinated PE and fluoroelastomers.


Drimix
75% Triethanolamine
Flow Polymers LLC
ï

Sp.gr. 1.30

Free flowing powder form of Triethanolamine





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Harwick Standard Distribution Corporation

The HallStar Co.

Flow Polymers LLC

     

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