Interpolymer paper strength additives

Paper making and fiber liberation – Processes and products – Non-fiber additive

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Details

162164EP, 162175, D21D 300

Patent

active

041521994

ABSTRACT:
Crosslinked starch-polyamide-polyamine interpolymers are prepared and described. Wet- and dry-tensile, dry-burst, and concora crush strengths of paper products, prepared from both acid and alkaline pulp furnishes, are significantly increased by the wet-end addition of the interpolymers.

REFERENCES:
patent: 2926154 (1960-02-01), Keim
patent: 3058873 (1962-10-01), Keim et al.
patent: 3320066 (1967-05-01), Garth
patent: 3399069 (1968-08-01), Bridgeford
patent: 3531465 (1970-09-01), Bridgeford

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