COUPSIL® 6109

COUPSIL® 6109 is used as a reinforcing filler in rubber compounds. It reacts with unsaturated polymers during vulcanization under formation of covalent bonds. This imparts greater tensile strength, higher moduli, reduced compression set, increased abrasion resistance, and optimized dynamic properties.
It is used in many fields of the rubber industry in combination with white fillers and where optimum technical properties are required.

Typical Applications

Mechanical rubber goods, Shoe soles

Benefits at a glance

Reaction product of organosilane Si 69® (Bis[3-(triethoxysilyl) propyl] polysulfide) and ULTRASIL® VN 2 (specific surface area 130 m2/g). The production consists of one hundred parts of ULTRASIL® VN 2 modified with nine parts of Si 69®. Since the reaction between the organosilane and the silica is complete, COUPSIL® 6109 offers the advantage of a homogeneous modification with low moisture adsorption during storage and significantly lower development of ethanol during mixing and processing.
COUPSIL® 6109 uses a silica with lower surface area which imparts low viscosities and favorable processing properties to rubber compounds. In addition, COUPSIL® 6109 yields reduced compression set, exceptionally good tensile strength and excellent dynamic properties.

Product Details

Further Information

Storage:

To ensure that product properties and application behavior remain unchanged, our precipitated silicas and silicates ought to be stored in closed and dry premises protected against exposure to volatile substances. Strict observance of optimum storage conditions ensures prolonged usability, nevertheless we recommend not to exceed a storage time > 24 months.
Forms of supply:
12,5 kg paper bags – 375 kg wooden pallet
400 kg FIBC – wooden pallet

Packaging:

12,5 kg bags on 375 kg wooden pallet

Shelf life:

min. 24 months

Markets & Applications