| 摘要 |
PROBLEM TO BE SOLVED: To provide a pitch controlling agent applicable in a wide range without depending on a pitch causative agent and pitch occurrence conditions, capable of effectively suppressing pitch hindrance such as dirty spots of paper, defects of paper, paper breakage and lowering of workability, in production process of pulp or paper and to provide a pitch controlling method using the pitch controlling agent. SOLUTION: The pitch controlling method comprises adding the pitch controlling agent containing limonene, a nonionic surfactant and an alkaline compound to pulp slurry or spraying an aqueous solution of the pitch controlling agent to a production apparatus to which pitch is readily attachable. COPYRIGHT: (C)2008,JPO&INPIT
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