Method of inhibiting wet strength resin deposition in papermakin

Details Method of inhibiting wet strength resin deposition in papermakin Method of inhibiting wet strength resin deposition in papermakin

1995-02-22

1996-05-28

Chin, Peter

Paper making and fiber liberation

Processes and products

Conditioning, preparing or repairing of apparatus

162DIG3, 162DIG4, D21F 132

Patent

active

055207812

ABSTRACT:
This invention relates to an improved press felt conditioning treatment which controls the deposition of poly(aminoamide)--epichlorohydrin type resins in a press felt. The treatment comprises applying to the felt an effective inhibiting amount of a conditioner comprising: an ethoxylated nonylphenol having greater than about 30 moles of ethoxylation; sodium n-hexadecyl diphenyloxide disulfonate; a fatty acid imidazoline or an alkylamidopropyldimethylamine which include an alkyl hydrophobe substituent having a carbon chain length of about 18.

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patent: 5189142 (1993-02-01), Devore et al.
patent: 5223096 (1993-06-01), Phan et al.
"The Mechanism of Wet-Strength Development by Alkaline-Curing Amino Polymer-Epichlorohydrin Resins"; H. Espy, T. Rave; TAPPI Journal; May, 1988 pp. 133-137.
"Wet-Strength Mechanism of Polyaminoamide-Epichlorohydrin Resins"; D. Devore, S. Fischer; TAPPI Journal; Aug., 1993; pp. 121-128.

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