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Surface modification with DuPont Zonyl® PTFE fluoroadditives
1/26/2010 10:12:18 PM
DuPont Zonyl PTFE dispersions and micropowders provide inks and coatings with improved scratch and scruff resistance, improved slip and anti-stick, and surface modification properties.
DuPont Zonyl® PTFE Fluoroadditives are finely divided white powders of PTFE resin. They affect behaviour of many materials without reacting with them and their size and morphology makes them easy to incorporate into paints, inks and adhesives. Zonyl® PTFE Fluoroadditives are high melting, hydrophobic and inert to nearly all solvents and chemicals. They don't discolour or degrade in sunlight or high temperature (-190 to +260 deg. C) and offer good lot-to-lot uniformity.
In inks Zonyl® PTFE Fluoroadditives provide:
• Improved rub and scuff resistance
• Improved slip and surface smoothness
• Help to protect the printed image
In coatings Zonyl® PTFE Fluoroadditives impart:
• Enhanced abrasion, scratch and scuff resistance
• Enhanced anti-stick and low-friction behaviour
• Surface modification to enhance mould release, wear or frictional properties
Zonyl® PTFE Fluoroadditives are different from Teflon® PTFE, which is used for moulding and extrusion, because they have:
• Lower molecular weight
• Smaller particle size (2-20pm)
• Different particle shapes and morphology
The usage rate in Inks is 1-3% and in coatings 1-5% (although in a self-polishing, anti-fouling marine paint it can be up to 30%). The main Zonyl® PTFE fluoroadditives grades are detailed below.
Zonyl® MP1100
Small particle powder especially suitable for improving performance of inks e.g. flexo, gravure and coatings e.g. solvent-based paint
Zonyl® MP1200
Easy to disperse non-agglomerated small-particle powder for improving the performance of coatings and inks e.g. Litho
Zonyl® MP1400
Non-agglomerated powder conforming to a broad range of FDA regulations for coatings and inks e.g. Litho
Zonyl® PTFE TE-3887
Aqueous dispersion of hydrophobic colloid containing about 60% low molecular weight PTFE for coatings e.g. water-bourne systems
Teflon® PTFE TE-3893
General purpose aqueous dispersion of hydrophobic colloid containing 60% PTFE resin for coatings applications.
Request more information: industrial@alfa-chemicals.co.uk
L Hedges
Industrial