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Clariant Introduces Leucophor® ACK for Improved Performance in Pigmented Coatings

Published on 2013-06-05. Author : SpecialChem

MUTTENZ -- Clariant launches the world's most highly-concentrated, urea-free liquid optical brightening agent (OBA) for printing and writing papers. New disulphonated Leucophor® ACK contains no environmentally-harmful additives, decreases OBA requirements for papermakers, and lowers transport costs and carbon footprint.

Leucophor ACK is an ultra-concentrated aqueous solution specially designed to give state-of-the-art effectiveness while satisfying the most demanding environmental requirements. The unique, patented, new generation urea-free optical brightener is primarily intended for stock application in sized and un-sized papers.

Free of additives such as urea and glycols, the REACH-registered brightener contributes less to the overall nitrogen and COD content of backwaters and effluent. Leucophor ACK fulfills the requirements of Nordic Swan, EU Eco Flower and BfR.

From an efficiency perspective, papermakers look to use less active agent to achieve good brightness or whiteness for their application. The highly substantive, ultra-concentrated stilbene brightener exhibits impressively high build up, even at extremely low concentrations, thanks to its strength and high affinity to the paper fiber. Compared to current disulpho chemistries, Leucophor ACK shows improved performance on stock addition to both virgin and recycled fiber, and in pigmented coating applications, particularly those containing PVOH as a secondary binder. It also allows greater flexibility and higher solids' contents in CMC and starch/CMC pigmented coatings.

The OBA's higher strength supports fewer deliveries and reduced storage volumes for paper mills. It therefore generates better sustainability through savings in product quantity and logistics, plus a lower transport carbon footprint, as well as easier handling.

Leucophor ACK liq is also particularly suitable for unsized tissue, neutral-sized and heavy loaded papers, and is one of the most effective OBAs for use in wood-containing grades, such as improved newsprint and SC grades.

"Sustainability is a clear trend, but at the same time papermakers do not want to sacrifice the technical and economic advantages of their operations. Leucophor ACK liquid satisfies an important need in the market, building sustainability on to the cost performance and ease-of-handling which customers have come to expect from Leucophor products," comments Andrew Jackson, Product Manager, Clariant, Business Unit Paper Specialties.

About Clariant

Clariant is an internationally active specialty chemical company, based in Muttenz near Basel. The group owns over 100 companies worldwide and employed 22 149 employees on December 31, 2011. In the financial year 2011, Clariant recorded a turnover of around CHF 7.4 billion. Clariant is divided into eleven business units: Additives; Catalysis & Energy; Emulsions, Detergents & Intermediates; Functional Materials; Industrial & Consumer Specialties; Leather Services; Master batches; Oil & Mining Services; Paper Specialties; Pigments; Textile Chemicals. Clariant focuses on creating value by investing in future profitable and sustainable growth, which is based on four strategic pillars: Improving profitability, innovation as well as research and development, dynamic growth in emerging markets, and optimizing the portfolio through complementary acquisitions or divestments.

Source: Clariant

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