DEINKING AGENT

• Main Authors: HAGIWARA MASAAKI, MIZUNO YOSHIMI, SHINODA JUNICHI
• Format: Patent
• Language: English
• Published: 10.02.1989
• Subjects: APPARATUS THEREFOR; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PAPER-MAKING; PRODUCTION OF CELLULOSE; PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TEXTILES

PURPOSE: To obtain a deinking agent strongly scavenging ink and removing it and giving high quality recycled pulp from printed wastepaper in high efficiency by including specific polyether compounds as a principal component. CONSTITUTION: This deinking agent comprises polyether compound having 1,000 to 83,000 of molecular weight obtained by adding 1 to 100 mole of alkylene oxide after adding 1 to 100 moles of ethylene oxide per active hydrogen of an aliphatic aldehyde condensation product with the compound having aromatic ring and 1 to 2 active hydrogen, polyethers compound having 1,000 to 83,000 of molecular weight obtained by adding aliphatic aldehyde to the addition product of 1 to 100 mole of ethylene oxide per active hydrogen of the compound having aromatic ring and 1 to 2 active hydrogen and adding 1 to 100 mole of alkylene oxide, as the principal component, and nonionic active component, anionic active component or the like.