LIMNINGSKOMPOSITION INNEFATTANDE EN KARBOXYLSYRAANHYDRID OCH EN NONJONISK POLYOXIALKENTENSID OCH FOERFARANDE FOER LIMNING AV PAPPER DAERMED

摘要

A sizing composition comprises a carboxylic acid anhydride and a polyoxyalkylene nonionic surfactant blocked with a lower alkyl, acyl or carbamoyl group and/or an alkaline earth metal salt of a sulphur-containing anionic surfactant. The composition can be easily emulsified to form an aqueous emulsion useful for paper sizing.