Contamination

(Amendments Included) SUBJECT of the Invention The contamination|pollution-prevention agent composition which can prevent the pitch contamination in a dry part effectively was provided. PROBLEM to be solved This invention is a contamination|pollution-prevention agent composition for preventing the pitch contamination in the dry part D of the papermaking process， Comprising: It is a contamination|pollution-prevention agent composition containing the polysiloxane compound and cyclosiloxane compound of linear represented by following formula (1). [MAT_IMAGE 000010] [In formula (1)， substituent R 1 is a hydrogen atom and an alkyl group in the same molecule， Methylphenyl group， Polyether group， Higher fatty acid ester group， Amino modification group， Epoxy-modified group， Carboxy group， Phenol group， Mercapto group， Carbinol group or methacryl group is shown， Repeating number n of a siloxane unit shows the integer of 20-1430.] SELECTED DRAWINGS FIG. 1 [MAT_IMAGE 000002]