Rubber Compounding Materials
Vulcanization Materials
Activators


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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.


Struktol Zimag 29/43A
Free-flowing granulate consisting of: 29% zinc oxide, 43% magnesium oxide and 28% wetting and dispersing agent.
Struktol Company of America
ï

Specific gravity: 2.11, bulk density: 800 (kg/m3), ash content: 70%, appearance: gray powder.

A cross-linking agent consisting of a 2:3 ratio of zinc oxide to magnesium oxide for chloroprene compounds to reduce scorch; dosage: 4-8 phr.


Struktol Zinc Laurate
Zinc salt of lauric acid
Struktol Company of America
ï

Specific gravity: 1.08; drop point: 125-135C; appearance: white pastille or course powder

Used as an activator for thiazoles, thiurams and dithicarbomates by supplying fatty acid and soluble zinc; dosage: 1-5 phr; Call for FDA status.


Struktol Zinc Stearate
Manufactured from a high quality technical grade stearic acid in a tightly controlled production operation that guarantees product uniformity.
Struktol Company of America
ï

Appearance: Three forms are available bead, pastille, and powder; zinc stearate bead is a free-flowing spray-dried microbead; the pastille is lens-shaped and approximately 1/8 inch in diameter; the bead and pastille are relatively new product forms in the industry; they have the major advantage of being essentially dust-free during handling, in contrast to powder forms; in all other aspects, the properties are equivalent to the standard stearates being used in the plastic and rubber industries.

Serves primarily as a lubricant, but also as a densifying agent and a partitioning agent; used extensively in color concentrates as a dispersion aid; used to improve processing of the styrenics and polyesters, and to a lesser extent with the olefins; In rubber applications, it functions as an elastomer processing aid and release agent.


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.


TATM DLD
Triallyl trimellitate on silica binder.
Akron Dispersions, Inc.
ï

Sp.gr. 1.415; off white, dustless, free-flowing powder.

Activator for peroxide vulcanization.


TEA DLD
Triethanolamine (99%) on silica binder.
Akron Dispersions, Inc.
ï

Sp.gr. 1.414; light gray to tan, dustless, free-flowing powder.

Activator for NR and SBR; neutralizes acidity of clay.


TEA-DLC-A
72% triethanolamine on silica powder
Natrochem
ï

Sp.gr. 1.30; dustless powder; shipped: bag.

NR, SBR activator; neutralizes clay acidity; add directly; incorporates rapidly.


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.





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.


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.


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.


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.


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.


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.


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.


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 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 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.





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Click companies below for more information about Activators

Suppliers listed
on this page

Struktol Company of America

The HallStar Co.

Akron Dispersions, Inc.

Natrochem

TSE Industries Inc.

Flow Polymers LLC

The Dow Chemical Company

Polychem Dispersions

DJ Semichem

Sovereign Chemical Company

Valley Rubber Mixing, Inc.

     

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