Kettlitz Chemie Antitack NP-97/TY-40

Antitack NP-97/TY-40 is a highly concentrated dispersion of zinc stearates. By means of new tech-nologies and high quality raw materials the zinc stearate content could be increased to more than 40 %.

Functions: Anti-Tack Agent

Chemical Family: Stearates

Processing Methods: Calendering, Extrusion, Injection Molding

End Uses: Footwear, Housewares, Sporting Goods, Textile Applications, Tires, Tubing

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Chemical Family
Plastics & Elastomers Functions

Features & Benefits

Materials Features

Antitack NP-97/TY-40 has no negative influence on the curing properties. During vulcanization, above approx. 120 °C, the zinc stearate particles melt and penetrate into the rubber compound. This avoids the rubber being burnt onto forms, molds and vulcanizate surfaces; welding and bonding with other material is pos-sible without any problems.

Applications & Uses

Plastics & Elastomers Processing Methods

By using a very fine grained zinc stearate, optimizing the sedimentation and foaming behavior, this anti-tack agent is recommended for application in dipping and spraying equipment. Antitack NP-97/TY-40 mainly is used in the rubber industry to prevent surface sticking of uncured rubber compounds. It is especially suited for the treatment of rubber sheets and strips, granules, calendered sheets, extruded profiles and molding blanks.


Physical Form
white paste of medium viscosity
Physical Properties
ValueUnitsTest Method / Conditions
Density at 20 °Capprox. 1.04 (mathematically)
pH-value at 20 °C (Dilution Ratio 1 : 10)7 - 8
Dry Matter (0.5 g/15 min./109 °C) (%)43.0 ± 2.5

Packaging & Availability


plastic drums containing 100 kg net

Storage & Handling


2 years at room temperature in originally sealed drums