Coatings World - April 2011

any thickness. This epoxy has a working life of 45 to 55 minutes at ambient temperature for a 200-gram batch, and cures at room temperature or faster at elevated temperatures. It bonds well to a wide variety of substrates, including metals, glass, ceramics, cements, vulcanized rubbers, wood and many plastics.

EP21AR is packaged in pint, quart, gallon and five-gallon container kits. It is widely used in an array of industries, including oil and chemical processing, maintenance and repair, optics, metalworking, appliance, and electrical/electronic.

Master Bond EP21AR is ideal for applications that require high strength, electrically insulative bonds in an acidic or corrosive environment.

BASF Coatings introduces Polyceram and Coiltec BASF has introduced the new Polyceram Plus topcoats and the chromate-free Coiltec universal primer. BASF Coatings specifically developed the Polyceram Plus topcoat portfolio for the European coil coatings market. The flexibility and weathering resistance of the coating are also an important positioning element for the various product lines comprising the new topcoat system. This entire spectrum of weathering resistance properties as outlined in European standard DIN EN 10169, can be covered with the new products. The new topcoat family consists of only eight product lines. They replace the over 20 different product lines previously on offer. BASF Coatings also launched the newest generation of Coiltec universal primers, which can be used on various substrates and with nearly all topcoats.

As environmentally friendly paints evolve
from marketing concept to industry mandate
chemists find the Brilliant Additions portfolio
a valuable formulating resource. These
functional mineral fillers excel when
combined with next-generation resins
to optimize the hardness, flexibility,
and durability of ultra-low VOC coatings.

Whitford breaks new ground with Xylan HB

Xylan HB has been introduced by Whitford. According to the company, new Xylan HB answers a problem that has been the nemesis of the liquid fluoropolymer coating applicator since nonstick coatings were launched in the middle 1950s: How does one achieve good film integrity at film thicknesses over 25 microns (1 mil) without having such severe problems as stress cracking, mud cracking, low density, porosity and non-uniformity? The manufacturer of a complete line of fluoropolymer coatings says Xylan HB waterborne coatings can be applied at films to 75 microns ( 3 mils) with one cure. Even thicker films (up to 125 microns/5 mils) are possible with longer-than-normal cure cycles.

Depending upon the specific application conditions, the oven ramp-up or flash time should be extended to assure removal of all volatiles. Xylan HB is a good alternative to PFA powder. It has excellent release characteristics and, because of its ability to form thick films, it is ideal for applications with rough surfaces from commercial waffle irons to molds that are recycled repeatedly. Due to its ability to be applied as a thick film, Xylan HB offers extended wear characteristics, simply as a result of the added durability afforded by the thicker film. And all formulae are FDA-compliant. Fluoropolymers are high-performance plastic materials used primarily in per-formance-critical applications in defense-related industries and in automotive, aerospace, electronics, telecommunications, chemical, medical and many other industries. In spite of their diverse uses, the average consumer knows these coatings primarily as the “nonstick” part of a fry pan. CW