Cross-linked poly(aminoamides) as yankee dryer adhesives

Details Cross-linked poly(aminoamides) as yankee dryer adhesives Cross-linked poly(aminoamides) as yankee dryer adhesives

1994-02-22

1995-01-17

Chin, Peter

Paper making and fiber liberation

Processes and products

Non-uniform, irregular or configured web or sheet

162112, D21H 2504

Patent

active

053823230

ABSTRACT:
Improved halogen-free Yankee Dryer adhesives based on cross linked cat ionic polyaminoamide polymers are described. The adhesives are obtained by crosslinking a backbone cationic polymer formed by reacting a difunctional carboxylic acid with a polyamine containing at least one secondary amine, said crosslinking achieved by the use of a multi-functional aidehyde. The preferred adhesive is that obtained by reacting adipic acid with diethylenetriamine, at essentially equimolar ratios of from about 1.2: 1.0 to about 1.0: 1.2, and then crosslinking with a dialdehyde selected from glutaraldehyde, glyoxal, or mixtures thereof. Improved adhesion and peel strength are obtained when using the new materials as compared to materials now commercially used.

REFERENCES:
patent: 3250664 (1966-05-01), Conte et al.
patent: 3607622 (1971-09-01), Espy
patent: 3773736 (1973-11-01), Coscia
patent: 4308092 (1981-12-01), Latimer et al.
patent: 5179150 (1993-01-01), Furman, Jr. et al.
Literature Search Report, "Adipic Acid/Diethylenetriamine Crosslinked With Glyoxal", No. 3594, Jun. 24, 1991 Glyoxal, pp. 1-31.

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