Paper manufacture employing filler and acrylamide polymer conglo

Details Paper manufacture employing filler and acrylamide polymer conglo Paper manufacture employing filler and acrylamide polymer conglo

1977-11-11

1980-01-01

Bashore, S. Leon

Paper making and fiber liberation

Processes and products

Non-fiber additive

162181R, 162181A, 162181B, 162181D, 162183, D21D 300

Patent

active

041815670

ABSTRACT:
A method of increasing the amount of mineral filler which can be contained in filled paper sheet produced on a papermaking machine without consequentially reducing the mechanical properties such as the tensile strength of the paper sheet comprises incorporating the mineral filler into the paper pulp furnish, before the latter is transferred to the wire, in the form of a filler/polymer conglomerate formed by contacting the mineral filler with a relatively high molecular weight polymer having a zeta potential in the range of from -40 to +40 electron volts.

REFERENCES:
patent: 2917426 (1959-12-01), Bugosh
patent: 3117944 (1964-01-01), Harrell
patent: 3252852 (1966-05-01), Lagally
patent: 3492225 (1970-01-01), Ryznar
patent: 3597251 (1971-08-01), Kaufman
patent: 3873336 (1975-03-01), Lambert
Reynolds et al "A New Polyacrylamide-Type Flocc. for Imp. Fill. Ret." Tappi, vol. 40, No. 11 pp. 918-920.
Casey "Pulp & Paper" vol. II, (1960) p. 947.

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