Coatings World - March 2011

Hamamatsu introduces the new LC-L5
UV-LED light source for UV curing

Hamamatsu Corporation has introduced the LC-L5 (L11403 series), the latest addition to its Lightningcure series of UV spot light sources. Its characteristics make the LC-L5 an excellent solution for curing materials such as UV curing adhesives and coatings, as well as UV inks. The LC-L5 is a UV-LED light source that irradiates a linear area with monochromatic UV light at 365 nm or 385 nm (Â± 5 nm). Two irradiation area sizes— 105 x 10 mm and 305 x 10 mm— are available. The LC-L5 produces intense UV irradiation; LC-L5 models with 1000 mW/cm2 or 1200 mW/cm2 intensity are available. Because the LC-L5 is based on LED technology, it has some advantages over other types of UV spot light sources. Compared to bulkier UV light sources built with lamps, the LC-L5 is compact and lightweight for easy installation into tight spaces along a production line. It also has a long service life of 20,000 hours. In addition, the LC-L5 has low power consumption and minimal heat emission.

Cytec launches Resydrol AY6705 waterborne acrylic resin for wood coatings The new generation of Resydrol AY6705 waterborne acrylic modified alkyd resin formulated by Cytec Industries Inc. extends durability with its penetration for timber substrates, making it a good choice for feeding and protecting exterior wood stains and timber decking. Its quick drying time and affinity for timber with varying degrees of tannin content promotes fast and easy recoating. The hybrid system captures the sought after properties of both alkyds and acrylics, according to the company. Its durability is further strengthened by its improved UV resistance. This low VOC resin doesn’t peel, flake nor need sanding or chemical stripping before the next customary repainting time frame, the company said.

Elementis introduces Tint-AYD AQ Colorants for European industrial coatings markets Elementis Specialties has introduced the new Tint-AYD AQ Colorants and Tinting System for the European decorative and aqueous industrial coatings markets. This new colorant system is available either as ready-made colorants or as discrete components that enable customers the flexibility of formulating the Tint-AYD AQ colorants themselves. The Tint -AYD AQ tinting system is based on a modular set-up: there are high concentrated colorants (Tint -AYD AQ HC) for in-plant tinting and colorants for point-of-sale tinting (Tint -AYD AQ). Additional modules for silicate tinting, wood coatings and cus-tomizable specialties complete the system. Tint -AYD AQ colorants are based on a dual humectant technology platform that delivers VOC compliance (< 1 g/l, per RAL UZ 102). Tint -AYD AQ colorants offer good performance with improved scrub resistance, water resistance, gloss development and viscosity stability. The entire Tint -AYD AQ colorant system can be made with three base additives: Nuosperse AQ 100, Nuosperse AQ 200 and Nuosperse AQ 300.

Albodur 955 VP:
a new 100% polyol
Alberdingk Boley has expanded the Albo-
dur product line of 100 percent PU-Poly-
ols based on renewable resources with the
new Albodur 955 VP. This binder is par-
ticularly designed for cross-linking with
aliphatic polyisocyanates. Application
areas are interior and exterior light-stable
coatings for such products as decorative
floors, where good mechanical and chem-
ical resistance is required. However not
only floor coatings applications are being
served by this grade. The goal set during
the development of Albodur 955 VP was
to combine excellent processing proper-
ties, high cured hardness and reduced OH
content, making possible a cost optimized

aliphatic polyurethane system. Like all binders in the Albodur product line, Albodur 955 VP is also based on renewable resources and is characterized by its excellent hydrophobic properties. The product can be coss-linked with all major aliphatic polyisocyanates (HDI, HDI/IPDI-Mix).

Protex International launches Synthro-Pon S 596 and 602

French company Protex International has introduced Synthro-Pon S 596 and S 602, new polymeric wetting and dispersing agents for pigments in high quality solventborne coatings. Both are produced at the Synthron plant in Loire, France. Synthro-Pon S 596 can be used for inorganic and organic pigments used in high quality solvent-based industrial systems. It improves the pigment dispersion and stabilization, giving a good prevention of flocculation and flooding, and also increasing gloss and color strength. Its wide compatibility in various industrial coatings systems allows it to be used in various systems including automotive OEM coatings and refinish, industrial coatings and wood coatings. Synthro-Pon S 602 is also a new wetting and dispersing additive for solventborne coatings based on a copolymer with acidic groups designed to disperse and stabilize inorganic pigments. It works to deflocculate, disperse and stabilize titanium dioxide and inorganic pigments and improves pigment wetting and reduces significantly the mill base viscosity, leading to higher pigment loading with excellent rheology. Although Synthro-Pon S 602 is especially designed for inorganic pigments, because of its specific chemistry, co-grinding inorganic pigment with a part of organic pigment is also possible. Also due to its anionic nature, Synthro-Pon S 602 is recommended for acid catalyzed systems.