| abstract |
The present invention is a contamination inhibitor composition for preventing pitch contamination in a dry part of a papermaking process, comprising a polysiloxane compound represented by the following formula (1), and having amino-modified groups per molecule of the polysiloxane compound. The antifouling agent composition is 0.5 to 5 in number. [In the formula (1), the substituent R 1 represents a methyl group or an amino-modified group represented by the following formula (2), and the repeating number n of siloxane units represents an integer of 50 to 1,000. In the formula (2), the substituent R 2 and the substituent R 3 each independently represent an alkylene group having 1 to 6 carbon atoms, and the repeating number m of the aminoalkylene unit represents an integer of 0 to 2. ] [Chemical 1] [Chemical formula 2] [Selection figure] None |