LANXESS to focus on ECO technologies at ACLE in Shanghai
24 Aug '09
4 min read
Specialty chemicals group LANXESS is exhibiting a comprehensive range of products for the leather industry at the All China Leather Exhibition (ACLE)i in Shanghai, China, on September 2–4, 2009. Jürgen Hackenbroich, head of the Asia Pacific region in the Leather business unit, comments: “The focus of our presentation at this year's fair is on premium products and on environment-friendly technologies for 'ECO' products. This means production processes that are energy-saving, conserve resources and minimize both the amount of waste generated and the use of critical substances during leather manufacturing.”
Levotan LB reinforces LANXESS's role as one of the leading suppliers of softening polymer tanning materials, which are increasingly replacing between 55–75 percent of the fatliquor offer because of their technical and ecological advantages. New, versatile Levotan LB permits the cost-effective production of shoe and upholstery leather that are lighter, fluffier and softer than conventional fatliquored leather but nevertheless very durable.
Retingan R12 is a dicyandiamide-based resin tanning material with good selective filling properties in particular for loosely structured parts of the hide. It can be combined with conventional synthetic and vegetable tanning materials, giving leather with a fine, smooth grain.
Tanigan CF liquid was developed specifically for the manufacture of wet white leather. It improves the tightness of loosely structured raw material to a level that is not possible with conventional syntans. The product has an excellent grain-tightening effect and good filling properties and gives a firm, smooth and very flat grain even on articles that are dry-drummed for prolonged periods. All this makes Tanigan CF liquid the ideal syntan for the production of both smooth and embossed leather.
New Tanigan VR combines all the advantages of modern chemistry with those of a vegetable tanning material. Because of its extremely well-balanced property profile, Tanigan VR can be used to replace some or even all of the vegetable tanning materials in the retannage, depending upon the raw material quality. Compared with certain vegetable tanning materials, this sulfone-based synthetic organic tanning material has outstanding heat resistance and lightfastness properties and a pale, neutral color giving a brilliant dyeing. It also gives excellent filling and embossing characteristics.
Aquaderm XL 100 EXP 2008 and Aquaderm XL DI 100 EXP 2009 are VOC (volatile organic compound)-free isocyanate crosslinking agents for top coat formulations. Used in combination with polyurethane and acrylic dispersions, they give excellent physical fastness properties such as are required in particular by the automotive industry. Aquaderm XL 100 EXP 2008 is used in “hotpot” systems, i.e. it is added directly to the top coat, whereas Aquaderm XL DI 100 EXP 2009 was developed specifically for the “inlineactivation” process. Both new crosslinking agents give leather with outstanding physical fastness properties and optimal VOC values.
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