Polyvinylalcohol/melamine-formaldehyde interaction products

Details Polyvinylalcohol/melamine-formaldehyde interaction products Polyvinylalcohol/melamine-formaldehyde interaction products

1981-11-19

1984-07-24

Pertilla, Theodore E.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524501, 524502, 524503, 524512, 525 58, C08L 310

Patent

active

044618581

ABSTRACT:
Stable aqueous solutions of cationic polyvinylalcohol/melamine-formaldehyde resin interaction products are provided comprising polyvinyl alcohol polymer and cationic melamine-formaldehyde resin acid colloid in a polyvinylalcohol/melamine-formaldehyde resin acid colloid weight ratio, on a dry basis, of from about 0.4/1 to about 5/1, and sufficient water to give a solids content of from about 0.7% by weight up to a level that will not cause gelation to a stage of no flow under the force of gravity in 48 hours but not in excess of 6% by weight. These aqueous polyvinylalcohol/melamine-formaldehyde interaction products have good stability, and high absorption capacity onto cellulose pulp. The use of these interaction products in paper making results in increased processing capability and improved wet and dry strength of the paper.

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Kuhn et al., "Crosslinking of Single Linear Macromolecules", Journal of Poly. Sci., vol. 57 (1962), pp. 311-319.
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