Multistage polymer composition and method of use

A composition comprising

• (i) 0 to 15% by weight volatile compounds, based on the weight of said composition, and
• (ii) at least one powder comprising at least one multistage polymer, wherein said multistage polymer comprises
• (a) at least one soft polymer having glass transition temperature of 40° C. or lower, and
• (b) at least one hard polymer having glass transition temperature higher than 40° C., wherein the glass transition temperature of said hard polymer is at least 10° C. higher than the glass transition temperature of said soft polymer,
• wherein the weight ratio of said hard polymer to said soft polymer is from 1.01:1 to 100:1, and
• wherein said multistage polymer, after exposure to liquid water followed by drying at temperatures below 100° C., shows maximum thermal transition temperature in an atmosphere of 0% relative humidity that differs by 20° C. or less from the maximum thermal transition temperature in an atmosphere of 75% relative humidity.