Muttenz, Switzerland - Speciality chemicals group Clariant is offering leather finishers a solvent-free alternative to nitrocellulose (NC) emulsions with the launch of Aqualen Top IL, an aqueous, modified polyurethane dispersion.
Clariant says this new material is an aqueous intermediate lacquer, especially developed to substitute solvent-containing emulsion lacquers. The company adds that it is easy to use, in the same way as standard NC emulsion lacquers. No changes to application or procedure are needed, and no solvents are involved. Hence there are no solvents in the exhaust air and no solvent smell remains in the leather, Clariant points out.
The material is also free of N-methylpyrrolidone, and has very low VOC (volatile organic compound) levels. This means that Aqualen Top IL can help tanneries reduce emissions, ensuring further environmental and health-related benefits.
Aqualen Top IL, mainly for use on furniture and automotive leathers, is applied to the base coat to eliminate tackiness when piling, milling or embossing the leathers. The excellent plate release and subsequent milling behaviour ensures trouble-free production.