Rubber Compounding Materials
Vulcanization Materials
Activators


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Function & Compounding


Zinc Oxide Poly Slab
85% French process zinc oxide in an EPR binder
Polymerics
ï

Sp.gr. 3.38.

Activator for natural and synthetic rubber; excellent incorporation and dispersion; very easy handling.


Zinc Oxide FlowSperse
Different percentages of zinc oxide on various carriers.
Flow Polymers LLC
ï

Elastomeric dispersion.

Activator for natural and synthetic rubber.


Zinc Oxide Dispersion - Taber brand
American and French zinc oxide and SBR
Taber Inc.
ï

A polymer masterbatch of 80% American or French zinc oxide and SBR.

Improve dispersion and processing.


Zinc Oxide Dispersion
60% zinc oxide dispersed in water
Vanderbilt Chemicals, LLC
ï

Density @ 25°C 1.98 Mg/m3; white dispersion; pH neat sample 9-11; total solids 2hrs @ 100-105°C 59.5-63.5%.

This dispersed form of zinc oxide permits its direct incorporation into latex compounds; Zinoxide at 0.5-6.0 phr is used to activate the cure of NR,SBR, and NBR latex compounds; zinc oxide acts as a vulcanizing agent in CR and XNBR latex; a minimum of 5 phr zinc oxide is generally used for the compounding of CR latexes.


Zic-Stick 'SG'
90% zinc oxide
Rhein Chemie Corporation
ï

Sp. gr. approx. 3.66; very fine particle size

Activator for NR's and SR's, vulcanizer for polychloroprene and other halogenated elastomers, superior activity.


Zic-Stick '85'
Zinc oxide dispersion
Rhein Chemie Corporation
ï

Sp.gr. 3.66; zinc oxide content approx 90%; very fine dispersion of highly active zinc oxide

Activator for NR and SRs; vulcanizer for polychloroprene and other halogenated elastomers; superior activity coupled with rapid complete incorporation enables 3 parts of Zic Stick 85 to replace 5 parts of zinc oxide powder in most applications.


Westco MO-140
Magnesium oxide
Western Reserve Chemical
ï

Fine white powder; surface area 45 m2/g.

Scorch retarder, curing agent and acid acceptor in polychloroprene and other chlorinated polymers.


Westco CAO-90
Calcium oxide dispersion
Western Reserve Chemical
ï

Sp.gr. 2.44; 86% min. calcium oxide in a high viscosity process oil

Activator; dessicant, absorbs moisture and prevents porosity in rubber.


Westco CAO-80
Calcium oxide disp.
Western Reserve Chemical
ï

Sp.gr. 2.1; a fine dispersion of CAO in a high viscosity processing oil.

Activator, desiccant, absorbs moisture and prevents porosity.


Val-Mix ZNO-65
65% zinc oxide in trans octenamer encapsulation
Valley Rubber Mixing, Inc.
ï

Sp.gr. 3.07; white, random sized free flowing pellet.

NR, SR activator, dispersion in pellet form provides fast and easy incorporation with predictable activation rates.





Val-Mix MgO-65
65% Mag. oxide in trans octenamer encapsulation
Valley Rubber Mixing, Inc.
ï

Sp.gr. 2.06; off white, random sized free flowing pellet.

Curing activator and acid acceptor; particularly suited for CR and CM; dispersion in pellet form provides ease of handling and incorporation.


Val-Mix Cal-90DN
905 calcium oxide in napthenic binder
Valley Rubber Mixing, Inc.
ï

Light gray, free flowing, finely pulverized dustless powder.

Dessicant; lw cost moisture scavenger to prevent porosity in continuous, no pressure curing; high resistance to post-vulcanization formation of white specks; dustless powder improves environmental safety; available in pre-weighed, heat sealed, mixercompatible polybags.


Val-Mix Cal-90 PTOR
90% calcium oxide in trans octenamer encapsulation
Valley Rubber Mixing, Inc.
ï

Light gray, free flowing, finely pulverized lime; random size pellet.

Dessicant, moisture scavenger to prevent porosity in continuous, no pressure curing; high resistance to post-vulcanization formation of white specks; pellet form provides excellent environmental safety; available in pre-weighed, heat sealed, mixer compatible poly bags.


Urea, WUF-16
Urea
Sovereign Chemical Company
ï

Coated or oil treated powder

Activator for nitrogen type blowing agents; product is hygroscopic and relatively non-dusting.


Unipaste (P II)
Finely ground urea with fatty acid compounds.
DJ Semichem
ï

Fine white powde; avoid moisture conditions.

Used as accelerator/activator for nitrogen releasing CBA; used as companion to DNPT blown sponges to reduce odors in sponges.


Ultra (ZNO) 88
88% zinc oxide treated with a proprietary polymeric binder
Polychem Dispersions
ï

Sp.gr. 3.50; shipped 50 lb. bags.

Semi dustless and free flowing powder.


Triethylene Glycol
Triethylene glycol
The Dow Chemical Company
ï

Sp.gr. 1.124-1.127; clear, colorless, hygroscopic liquid; Bp. 278-300°C; flash pt. 330°F; d, 9.39 lb/gal. at 20°C.

NR, SR, latex activator with non-black reinforcers.


Triethanolamine
Triethanolamine
The Dow Chemical Company
ï

Sp.gr. 1.124-1.130; viscous, pale yellow liquid; slight ammonia odor; hygroscopic; Bp (150 mm). 277-279°C. pH (25% solution); 11.2 flash pt. about 360°F; d, about 9.4 lb/gal.

NR, SR, latex activator; dispersing agent neutralizes clay acidity; improves processing reduces gas permeability; somewhat increase tear resistance; sBR activator with certain accelerators; add directly.


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.


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.





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Click companies below for more information about Activators

Suppliers listed
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Polymerics

Flow Polymers LLC

Taber Inc.

Vanderbilt Chemicals, LLC

Rhein Chemie Corporation

Western Reserve Chemical

Valley Rubber Mixing, Inc.

Sovereign Chemical Company

DJ Semichem

Polychem Dispersions

The Dow Chemical Company

TSE Industries Inc.

     

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