摘要:
The invention relates to an aqueous coating composition of nano cellulose (e.g. microfibrillated cellulose), characterized in that has a dry matter concentration of 2%-12% of nano celluloseand comprises at least one cationic surfactant, which may be chosen among Hexadecyltrimethyl-ammonium bromide,Octadecyltrimethyl- ammonium bromide,Hexadecylpyridinium chloride andTetradecyltrimethyl- ammonium bromide, Dodecylpyridinium chloride. The invention also pertains to use of the composition as a coating layer and as an oxygen barrier layer. Further it relates to substrates, e.g. board, cardboard or paper coated with the composition. Moreover, the invention pertains to a process for preparing the coating composition.