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Struktol Company of America, LLC A 50

Struktol Company of America, A 50 - A rubber soluble zinc soap of high molecular weight that provides a rapid physical peptization of natural rubber. It starts to be effective in the lower temperature range of compounding and can be used for mastication in a separate stage as well as for single stage mixing.

Functions: Peptizer, Processing Aid

Chemical Family: Zinc & Zinc Compounds, Zinc Soaps

Processing Methods: Extrusion

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Plastics & Elastomers Functions

Applications & Uses

Plastics & Elastomers Processing Methods
Use Level
3 - 5 phr
Recommended Applications

STRUKTOL® A 50 is the latest in a series of process additives developed by Struktol which are zinc fatty acid derivatives.

These zinc salts have proven effective over the years as physical peptizers for natural rubber. Since the available double bonds act to stabilize free radical formation, products such as STRUKTOL® A 50 improve reversion resistance and produce vulcanizates which display greater resilience and tear strength. Because of the higher level of solubility, STRUKTOL® A 50 can be used without fear of bloom or adverse effect on rubber to metal or rubber-to-rubber adhesion.

Due to the polymer chain lubricating effect, compounds containing STRUKTOL® A 50 will display lower viscosities under shear as well as greatly enhanced flow rates.

When used as a process additive for solution SBR, compound viscosities are reduced while flow rates and reversion resistance are improved.

STRUKTOL® A 50 will also provide easier mixing and extrusion of compounds based on solution SBR. Mold flow and mill roll release will also be enhanced.

Properties

Physical Form
CLTE - Transverse (-22 to 86°F)
Beige pastilles
Appearance
Beige Pastilles
Typical Properties
ValueUnitsTest Method / Conditions
Ash Contentmax. 14.5%-
Dropping Point97 - 109°C-
Specific Gravity1.1--
Zinc Oxide Contentmax. 14.5%-

Packaging & Availability

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

Storage & Handling

Shelf Life
18 Months
Storage and Packaging

Storage Stability :

At least 18 months under normal storage conditions

Packaging :

55 lb. PE bags