| abstract |
[Object] To provide an anti-soiling agent compound that can sufficiently prevents adhesion of pitch to a dry part region. n [Solution] The present invention provides an anti-soiling agent composition for preventing pitch contamination in a dry part of a paper-making process, and the composition has a polysiloxane compound represented by the following formula (1), wherein the number of amino-modified groups per molecule of the polysiloxane compound is in a range from 0.5 to 5. n [wherein, a substituent R 1 represents a methyl group or an amino-modified group represented by the following formula (2), and the number n of repeating siloxane units represents an integer in a range from 50 to 1000, andn nwherein, each of a substituent R 2 and a substituent R 3 independently represents an alkylene group having carbon atoms of 1 to 6, and the number m of repeating amino-alkylene units represents an integer in a range from 0 to 2]. |