PAPER-TREATING AGENT AND TREATMENT OF PAPER

• Main Authors: SAEKI TAKUYA, OGAKI KOKI, SATO NAOKI
• Format: Patent
• Language: English
• Published: 26.12.2000
• Edition: 7
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; IMPREGNATING OR COATING OF PAPER; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PAPER NOT OTHERWISE PROVIDED FOR; PAPER-MAKING; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; PRODUCTION OF CELLULOSE; PULP COMPOSITIONS; TEXTILES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G

PROBLEM TO BE SOLVED: To obtain a paper-treating agent free from the generation of formaldehyde and effective for improving the dimensional stability of paper, especially the dimensional stability in wet state by formulating a specific hydroxyl compound with glyoxal. SOLUTION: The objective paper-treating agent is produced by formulating a compound containing at least 2 hydroxyl groups and expressed by formula I (R is H or methyl; and (n) is 1-20), formula II ((n) is 1-20), formula III [(m) is 0-3; and R1 to R11 are each H, OH or a 1-3C (hydroxy) alkyl] and formula IV (R12 is hydroxyl or hydroxymethyl; and R13 is H, hydroxyl, hydroxycarbonyl or the like), e.g. diethylene glycol, tripropylene glycol and cyclohexane dimethanol with glyoxal at a weight ratio of 0.1:10 to 10:0.1. The paper-treating agent is applied to a paper by internal sizing and/or impregnation treatment and a drying and/or heating treatment.