Activator 73 LM

1 of 2 products in this brand
Activator 73 LM - Multifunctional cure activators for the sulfur vulcanization of diene rubber, especially natural rubber. They can partly or totally replace conventional activators based on fatty acids (stearic acid, zinc stearate, and zinc 2-ethylhexanoate) and impart excellent reversion resistance. They can also be used as an effective physical peptizer for the mastication of natural rubber to improve processability in mixing, extrusion and molding. "LM" is designed for low shear and low temperature mixes.

Functions: Activator, Curing Agent, Peptizer, Viscosity Modifier

Chemical Family: Zinc & Zinc Compounds

Processing Methods: Extrusion

Technical Data Sheet

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Identification & Functionality

Chemical Family

Applications & Uses

Markets
Plastics & Elastomers Processing Methods
Recommended Applications

STRUKTOL® Activator 73 A and STRUKTOL® Activator 73 LM, a formulation of selected zinc salts, are very effective activators for the sulfur vulcanization of diene rubber, especially natural rubber. STRUKTOL® Activator 73 A and STRUKTOL® Activator 73 LM can partly or totally replace conventional activators based on fatty acids, e.g., stearic acid, zinc stearate, and zinc 2-ethylhexanoate.

The following improvements are achievable by application of STRUKTOL® Activator 73 A and STRUKTOL® Activator 73 LM: 1) prolonged reversion time, 2) higher modulus, 3) less heat buildup under dynamic load, and 4) reduced compression set at elevated temperatures, 5) improved properties at high temperature cures, 6) viscosity reduction at high shear.

STRUKTOL® Activator 73 A and STRUKTOL® Activator 73 LM can be used as an effective physical peptizer for the mastication of natural rubber. It improves processability in mixing, extrusion and molding. STRUKTOL® Activator 73 LM is designed for low shear and low temperature mixes.

Properties

Physical Form
CLTE - Transverse (-22 to 86°F)
Antique white pastilles
Appearance
Antique White Pastilles
Typical Properties
ValueUnitsTest Method / Conditions
Dropping Point94-106°C-
Specific Gravity1.15--
Zinc Contentmax. 12%-

Packaging & Availability

Regional Availability
  • Africa
  • Asia Pacific
  • Europe
  • Latin America
  • North America

Storage & Handling

Shelf Life
24 Months
Storage and Packaging

Storage Stability :

at least 2 years under normal storage conditions.

Packaging :

25 kg. PE bags