Application of paper sizing and coloring paste in papermaking field

• Main Authors: HUANG DINGYUAN, HUANG JIEDI, YAN JINHUA
• Format: Patent
• Language: Chinese; English
• Published: 20.08.2019
• Subjects: IMPREGNATING OR COATING OF PAPER; PAPER NOT OTHERWISE PROVIDED FOR; PAPER-MAKING; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; PRODUCTION OF CELLULOSE; PULP COMPOSITIONS; TEXTILES; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G

The invention discloses an application of a paper sizing and coloring paste in the papermaking field. The application is the application in paper sizing and coloring, and comprises the following steps: (1) uniformly grinding 5-30 parts by mass of a toner, 1-5 parts by mass of a stabilizer, 1-5 parts by mass of a wetting agent and 50-100 parts by weight of water to obtain a toner dispersion; (2) heating the toner dispersion to 50-80 DG C, adding 5-30 by mass of an amino resin prepolymer, performing uniform mixing, adjusting the pH value of the obtained mixture to 5-7, carrying out a condensation reaction for 1-2 h, adjusting the pH value of the mixture to 8-9, and cooling the adjusted mixture to obtain the paper sizing and coloring paste; and (3) uniformly mixing sizing starch with water, heating the obtained mixture to 85-90 DEG C, keeping the temperature for 30 min to achieve gelatinization, adding the gelatinized mixture into a glue tank, adding water to dilute in order to make the mass concentration of the