Ammonium polyamidoamines

Details Ammonium polyamidoamines Ammonium polyamidoamines

1982-01-04

1983-11-22

Smith, William F.

Paper making and fiber liberation

Processes and products

Non-fiber additive

1671682, 1671684, 1671685, 1671686, D21H 348

Patent

active

044167296

ABSTRACT:
Wet strength of paper is effectively increased by contacting paper pulp with an ammonium polyamidoamine having cross-linking functionality such as epoxy or azetidinium and subjecting a wet sheet of such pulp to conditions sufficient to cure the polyamidoamine.

REFERENCES:
patent: 3240761 (1966-03-01), Keim et al.
patent: 3305493 (1967-02-01), Emmons
patent: 3445441 (1969-05-01), Rushton
patent: 3607622 (1971-09-01), Espy
patent: 3951921 (1976-04-01), Espy et al.
patent: 4156775 (1979-05-01), Evani et al.
patent: 4198269 (1980-04-01), Evani et al.
patent: 4298639 (1981-11-01), Van Eenam

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