Palmer Holland

Ultrasil precipitated silica:

• Used as a reinforcing filler
• Silica grades pre-reacted with silane available
• The use of precipitated silicas without silane additives produces improved dynamic properties; however, mixture viscosity, vulcanization time, and crosslinking density all suffer
• Organosilanes help the silica bond to the polymer, improve processability and produce very good static and dynamic rubber technological properties

Organosilanes:

• Generally bifunctional organic silicon compounds with two reactive groups
• Grades include Si69, Si264, Si266, and X50S
• Imparts better tensile strength
• Reduces heat build-up
• Improves abrasion resistance
• Reduces compression set
• All sulfur-functional silanes from Evonik are available in liquid form; some are also available in dry blend with carbon black or as a pre-reacted silica compound

Carbon blacks:

• Coloring:  Jetness, undertone, opacity and gloss traits
• Conductivity:  Specially produced pigments impart electrical conductivity properties.
• Reinforcement:  Enhance mechanical properties of polymeric substances
• UV protection:  Particle sizes ranging from 19 to 20 nm, when adequately loaded offer UV protection in plastics.

Aerosil® fumed silica:

• Reinforcement properties
• Thickening, thixotropy
• Anti-sag/anti-settling properties
• Free-flow, anti-caking and fluidization characteristics in powders

Dynasylan® silanes:

• Adhesion promoter/coupling agent
• Cross-linking agent
• Surface modifier
• Water scavenger
• Co-binder/co-monomer
• Reagent

INXEL® pigment preparations:

• VOC and HAPS free
• Ready-to-use
• No pigment grinding needed
• Short dispersion time
• Low energy consumption
• No dust -- easy dose granules

Green Chemistry: