Heat thickening composition for coating slips based on a copolymer having a lower critical solubility temperature

摘要

The invention concerns a heat thickening composition for coating baths comprising at least a heat-sensitive copolymer, characterised in that said copolymer has a comb structure and consists of a polymeric segment called skeleton segment whereto are grafted at least two polymeric lateral segments, identical or different, with either the skeleton segments and/or the lateral segments having a low critical solubility temperature (LCST) ranging between 30 and 80° C. The invention also concerns a coating bath comprising said composition and their uses for coating paper or cardboard.