Paper making and fiber liberation – Processes and products – Non-fiber additive
Patent
1976-05-06
1978-05-09
Bashore, S. Leon
Paper making and fiber liberation
Processes and products
Non-fiber additive
162181A, D21H 348
Patent
active
040885305
ABSTRACT:
Paper of dry strength is produced by forming an aqueous solution of papermaking cellulose fibers and adding thereto a 90:10 to 98:2 copolymer of acrylamide and maleic acid followed by addition of alum. The use of the acrylamide-maleic acid copolymer allows production of paper at a much broader pH range towards the alkaline side which eliminates the need for close control of pH and which substantially reduces corrosion of the papermaking equipment.
REFERENCES:
patent: 3049469 (1962-08-01), Davison
patent: 3269891 (1966-08-01), Reynolds et al.
patent: 3332834 (1967-07-01), Reynolds
Chan Lock-Lim
Schaffer Joseph F.
Bashore S. Leon
Borden Products Limited
Kap George A.
Maskas George P.
Mast Daniel D.
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