Wet strength resins

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

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Details

1621646, D21H 358

Patent

active

045376573

ABSTRACT:
Disclosed are novel wet strength resins for paper. The resins are produced by reacting an epihalohydrin, such as epichlorohydrin, with an aminopolyamide-polyureylene intermediate derived by reacting methylbisaminopropylamine with oxalic acid or a diester of oxalic acid and with urea.

REFERENCES:
patent: 3240664 (1966-03-01), Earle, Jr.
patent: 3250664 (1966-05-01), Conte et al.
patent: 3311594 (1967-03-01), Earle
patent: 3645954 (1972-02-01), Terada et al.
patent: 3793279 (1974-02-01), Lipowski
patent: 3887510 (1975-06-01), Chan et al.
patent: 3891589 (1975-06-01), Ray-Chaudhuri
patent: 4388439 (1983-06-01), Maslanka

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