界面活性剤による亜硫酸パルプ樹脂障害制御の研究

第6報 陽イオン・非イオン混合活性剤による亜硫酸パルプの脱樹脂

抄録

Deresination effects of mixtures of cationic with nonionic surfactant was evaluated during hot alkali refining in a conventional multi-stage refining process of sulfite pulp. A mixture of lauryl trimethyl ammonium chloride (1) with polyoxyethylene nonylphenyl ether (n=9) (II) showed a synergistic effect in the mixing ratio of 1:1, when employed in the refining of sulfite pulp from freshly-cut softwood. Surfactant mixtures comprising (I) and polyoxyethylene lauryl ether (n=7) also showed improved effectiveness for softwood sulfite pulp in the mixing ratio of 1:1 to 1:4. The mixture of (I) with (II) proved to be poor deresination agent for hardwood sulfite pulp.