Patent ID: 7081305

Claim:
A process for the production of coated papers, comprising: applying at least one aqueous paper coating slip to a base paper by cast coating to form a coated paper and contacting the coated paper with a metal cylinder heated to at least 90° C., wherein the paper coating slip comprises a mineral pigment and an aqueous polymer dispersion, and wherein the polymer dispersion is obtained by emulsion polymerization of at least one ethylenically unsaturated compound; wherein the viscosity of the paper coating slip at from 35° C. to 60° C. is at least twice the viscosity at 30° C.; and wherein the paper coating slip comprises one of the following constituents: a) an ionically stabilized polymer dispersion and a polymeric compound having a temperature-dependent light transmittance, b) an aqueous polymer dispersion stabilized with a nonionic emulsifier, wherein the emulsifier has a temperature-dependent light transmittance, or c) an aqueous polymer dispersion in which the dispersed polymer contains polymerized units of a monomer whose homopolymer has a temperature-dependent light transmittance, wherein temperature-dependent light transmittance is a temperature range bounded by a lower temperature T 1 and higher temperature T 2 wherein the light transmittance at T 2 is less than 80% of the light transmittance at T 1 ; and wherein T 1 is 30° C. and T 2 ranges from 35° C. to 60° C.