Use of a styrene latex 100 nm in size as a rheological agent in a paper coating, the paper coating, and the method for obtaining it

摘要

The invention relates to coating slip including latex comprising styrene and with a particle size centered around 100 nm, the use of latex as an agent for reducing the low shear gradient viscosity and increasing the low shear gradient viscosity, and methods thereof.

主权项

1. A method for manufacturing a coating slip, comprising mixing together:
water, a latex, a binder, a mineral material, optionally a rheology-modifying agent that is not said latex, and optionally another additive, wherein said latex comprises at least 95% by weight of styrene compared to its total weight and said latex has a particle size from 50 to 150 nm, and wherein the coating slip produced by said method comprises: said water in an amount from 20% to 50% based on the total weight of the coating slip, and, expressed in parts by dry weight per 100 parts by dry weight of the mineral material;
(a) 0.1 parts to 5 parts of said latex,(b) 3 parts to 20 parts by weight of said binder,(c) 0 part to 1 part by dry weight of said rheology-modifying agent that is not said latex, and(d) 0 part to 1 part by dry weight of said another additive.