Rubber Compounding Materials
Vulcanization Materials
Activators


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Function & Compounding


Dynamide
Urea powder formulated to improve processing and functionality.
Littlern Corporation
ï

Sp.gr. 1.34; fine white powder; avg. particle size less than 10 micron.

Activator for nitrogen blowing agents; lowers decomposition temperature; reduces odor produced by some blowing agents; secondary accelerator; component of nitrosamine-free curing systems.


Activator Dispersions - Taber brand
Various activators
Taber Inc.
ï

Paste, polymer masterbatches and netted powders of activators; compatibags, slabbed and/or pellitized masterbatches.

Consistent dispersion to improve processing.


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.


Dibasic Lead Phosphite FlowSperse
Various percentages of dibasic lead phosphite in different carriers
Flow Polymers LLC
ï

Paste and elastomeric dispersions.

Activator


Dibasic Lead Phthalate FlowSperse
Various percentages of dibasic lead phthalate in different carriers
Flow Polymers LLC
ï

Paste and elastomeric dispersions.

Activator


Litharge FlowSperse
Various percentages of litharge in different carriers
Flow Polymers LLC
ï

Paste and elastomeric dispersions.

Activator for NR and SRs.


Tribasic Lead Sulfate FlowSperse
Various percentages of tribasic lead sulfate in different carriers
Flow Polymers LLC
ï

Paste or elastomeric dispersion.

Ease of incorporation and handling.


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


Stearic acid, SA 590
Vegetable based stearic acid, rubber grade
Sovereign Chemical Company
ï

Flake, sp.gr. 0.84

see SA-590


Struktol ZEH
Zinc 2-ethylhexanoate
Struktol Company of America
ï

Specific gravity: 1.20, zinc content: 24% max, viscosity at 25C (mPa-s): 7000 max, appearance: high viscosity liquid

A rubber soluble zinc soap used as an activator for natural rubber; used instead of stearic acid and reduces stress relaxation and primary creep of NR-vulcanizates, especially in combination with soluble EV-systems; dosage: 1-3 phr.





Struktol ZEH-DL
Zinc 2-ethylhexanoate coated on silica powder
Struktol Company of America
ï

Specific gravity: 1.46, zinc content: 16.6% max, silica content: 33.3%, appearance: light powder

Rubber soluble activator for natural rubber compounds when used in place of stearic acid improves stress relaxation and primary creep of NR compounds; especially effective with soluble EU-systems; concentrations - 1.5 - 4.5 Phr.


Thanecure ZM
Zinc chloride dibenzothiazyl disulfide complex
TSE Industries Inc.
ï

Sp. gr. 1.80; yellowish powder

Activator for sulfur and peroxide cross-linkable polyurethane rubber.


SR709
Zinc mono-methacrylate
Cray Valley, a brand of Total
ï

White crystalline powder; specific gravity @ 25Cis 1.88.

An ultra-efficient sulfur activator which develops superior modulus/cross density with excellent scorch properties and reversion proptection.


CR-420
Zinc oxide
Harwick Standard Distribution Corporation
ï

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

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


HT-3C
Zinc oxide
Hydro Technologies (Canada)
ï

General purpose ZnO; BET 4-8 m2; sp.gr. 5.6; cream to off-white powder

NR and SR activator; semi-reinforcing and hiding pigment.


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.


HT-Active
Zinc oxide
Hydro Technologies (Canada)
ï

High surface area ZnO; BET 40 m2; sp.gr. 5.6; cream to off-white powder; zinc content > 97%; Pb content <25 ppm

A highly dispersible zinc oxide especially suited for semi-transparent and latex compounds; its higher activity benefits compounds with reduced zinc oxide content; when used at higher levels, improves compression set, crosslink density and reduces cure time.


Daewoon
Zinc oxide
Intertex World Resources, Inc.
ï

Low purity, low cost transactivated zinc oxide.

General purpose rubber applications.


CR-4G
Zinc oxide
Harwick Standard Distribution Corporation
ï

High purity French process, white granule/pellet sp.gr 5.6; medium particle size, medium surface

For natural and synthetic rubbers and latices as cure activator and/or vulcanizer; add directly to rubber; pellet grade provides less dust


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





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Click companies below for more information about Activators

Suppliers listed
on this page

Littlern Corporation

Taber Inc.

Flow Polymers LLC

Harwick Standard Distribution Corporation

Sovereign Chemical Company

Struktol Company of America

TSE Industries Inc.

Cray Valley, a brand of Total

Hydro Technologies (Canada)

Intertex World Resources, Inc.

     

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