EU Regulatory Compliant (RC) PTFE

Shamrock Technologies is excited to introduce our EU Regulatory Compliant PTFE product line, indicated by the suffix “-RC”.  The RC products listed below complies with Commission Delegated Regulation (EU) 2020/784 amending Annex I to POPs Regulation (EU) 2019/1021 (per Shamrock QSOP-202E).

Shamrock has pro-actively adopted a method similar to 3M’s Standard Test Method (Edition 1.0, Nov 2016), based on extraction of PTFE powders with methanol and the use of Liquid chromatography-mass spectrometry (LC-MS) to determine the concentration of PFOA. Shamrock’s internal Test Method, QSOP-202E[ii] has correlated well with test data (of the same powder samples) from external test centers to validate accuracy and precision. Scientists generally agree that an accepted test method is calibration with known standards whereby the results of the same samples in different labs are within experimental error.

Addendum:

The EU has added C9-C14 PFCAs and C9-C14 PFCA-related substances under ANNEX XVII of REACH. The new law will become effective on February 25, 2023.

On August 5, 2021, the European Union (EU) published Regulation (EU) 2021/1297 to replace entry 68 to Annex XVII of Regulation (EC) 1907/2006 on Registration, Evaluation, Authorization and Restriction of Chemicals (REACH, consolidated version to July 2021) in relation to ‘Restrictions on the manufacturing, placing on the market and use of certain dangerous substances, mixtures and articles.’

PTFE micropowders are used to reduce friction between contacting surfaces. These materials are produced in low micron or sub-micron particle size and in a range of low molecular weight. The raw materials and processes used to make the micropowders determine the properties such as surface energy, surface area, hardness and more.Our PTFE for inks are made by degrading and micronizing Natural Prime (granular and paste) or recycled PTFE. Particle size is tightly controlled, and measured by industry standard Grind Gages. The particle size distribution is measured by laser light diffraction. Our PTFE products are color specified using a reflectance densitometer. Other properties of PTFE are its high density and low refractive index. We control and measure many basic powder properties.

Classic White PTFE** SST®-2-RC SST®-3-RC SST®-4-RC SST®-5-RC
NPIRI Grind N5 N2.5 N2 N2
Mean Particle Size 8 5 3.5 3
High Performance White PTFE** SST®-2D-RC SST®-3D-RC SST®-4D-RC SST®-5S-RC
Mean Particle Size (microns) 7 5 3 3
99% < (microns) 22 12 8 15

EU Regulatory Compliant PTFE with Wax

Since our discovery that PTFE increases the level of rub and abrasion resistance that wax cannot provide alone, we have developed various combinations of these materials. Our FluoroSLIP® products are powder-in-powder dispersions controlled for dispersibility in liquids by typical draw down methods.

Product Melting Point °C/°F Sp. Gravity (25°C) Particle Size (microns) NPIRI Grind Hegman Grind Feature
FluoroSLIP® 225-RC 100/212 1.1 4 4.0 Widely used PTFE/synthetic wax combination
FluoroSLIP® 421T-RC 110 / 230 1.1 5 2.5 6.5 Combination for Thin film, clear coatings
FluoroSLIP® 511-RC 125/257 1.09 5 2.5 6.5 High MW wax for abrasion resistance and good slip
FluoroSLIP® 533-RC 102 / 215 1.1 9 5.5 6.5 PTFE Enhanced oxidized wax
FluoroSLIP® 731MG-RC 111/232 1.1 5 2.0 6.5 Easy to disperse alloy for water based systems
Super Taber 5509 N1-RC 125 / 257 1.1 5 2.5 6.5 Provides excellent resistance to taber abrasion, falling sand abrasion and can slide wear.

Compounds, Dispersions & Emulsions for Inks and Coatings

PTFE in Ink Vehicles

FluoroSPERSE® dispersions incorporate high quality PTFE found in our SST series in a variety of heat-set and sheet-fed vehicles, including viscoelastic hydrocarbon varnishes, linseed oil, lithographic oil and soya varnishes. The line is comprised of white or toned PTFE providing exceptional slip, rub resistance, and increased efficiency in high volume, automated printing ink manufacturing processes. FluoroSPERSE® dispersions are available in paste or pumpable form.

Product Solids % Vehicle Application Notes
FluoroSPERSE® 966-RC 58 Soya alkyd
High loading PTFE dispersion with controlled particle size distribution
FluoroSPERSE® 7446-RC 50 Lithographic varnish recommended for use in offset inks
FluoroSPERSE® 7908-RC 50 Lithographic varnish Light Gray PTFE dispersion for universal use lithographic inks.

PTFE in Water

Shamrock’s AquaFLON series is engineered to overcome the inherent incompatibilities between micronized PTFE and water. Ranging from micron-sized dispersions to sub-micron emulsions, these high solids, ready to use lube packagaes provide optimum slip and mar resistance in aqueous systems. They are designed with features optimized for easy incorporation into water based systems.

Product Solids % MV (µm) NPIRI Hegman Application Notes
AquaFLON® 50-RC 50 <2 1.5 7 PTFE based emulsion for thin film coatings
AquaFLON® 52-RC 60 4 2.0 7 PTFE dispersion for scratch resistance
AquaFLON® 178G-RC 48 6 5 6.5 PE/PTFE dispersion for both slip and abrasion
AquaFLON® 797-RC 45 7 4 6 PTFE/Synthetic wax dispersion for scuff and abrasion resistance
AquaFLON® MG-RC 46 5 2.5 6 PTFE/Wax alloy for thin film coatings for high gloss retention

Wax Compounds

Wax compounds are prepared by crystallization of wax from solution to obtain fine particles. Shamrock’s CeraSPERSE line includes dispersions in hydrocarbon varnish, linseed oil, lithographic oil and soya varnish. They may be added directly into the mixing container. These products provide excellent slip and rub resistance at addition levels of 5-8% based on formulation.

Product % Active Composition Carrier NPIRI Feature
CeraSPERSE 174-RC 44 PE/PTFE Linseed oil 2 Combined features from PE and PTFE for enhanced rub resistance, slip and gloss
CeraSPERSE 321BG-RC 25 PE/PTFE/ Carnauba Butyl Carbitol 2 Slip and abrasion resistance for High gloss clear applications