Polyurethane dispersions for book binding

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

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Details

156908, 412 8, 524507, C09J 400

Patent

active

054436745

ABSTRACT:
A method of binding book blocks to form books is disclosed. The method involves applying an aqueous composition to the spine area of a book block and removing the volatile components of the composition. The composition comprises (1) an aqueous vehicle, a film-forming polymeric resin, and a polyurethane resin or (2) an aqueous polyurethane dispersion or emulsion. The composition may also include an alkaline component. In another embodiment, the composition comprises a mixture of an aqueous, film-forming polymeric latex, an alkaline component to adjust the pH the latex to that of an aqueous polyurethane dispersion, and the aqueous polyurethane dispersion.

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