| 摘要 |
PROBLEM TO BE SOLVED: To provide a bulking agent for papermaking, which exerts high bulking effect, has good stability of its own, at the same time, does not considerably reduce paper strength of lower density paper, and has low foaming property. SOLUTION: A bulking agent for papermaking includes an amide resin (C) obtained by reacting a secondary amino group-containing polyamine (A) with a monocarboxylic acid (B), wherein, the ratio of [the number of tertiary amide generated by reaction of secondary amino of polyamine (A) in the amide resin (C) with the monocarboxylic acid (B)]/[the number of secondary amino in the polyamine (A)] is 0.05-1. COPYRIGHT: (C)2008,JPO&INPIT |
