| 摘要 |
A method of producing paper which includes adding to a paper making stock or furnish a microparticle system as a retention and/or drainage aid which comprises a polymer selected from the group consisting of polyampholyte polymer, a coagulant polymer and a high molecular weight water soluble polymer, and an inorganic sol selected from the group consisting of zirconia sol, and alumina sol. Optionally, a cationic starch may be part of the microparticle system and added prior to the addition of the polymer. The method may involve the addition of the inorganic sol after the last shearing stage. |
