Impregnation of leather with polyurethane dispersions

Details Impregnation of leather with polyurethane dispersions Impregnation of leather with polyurethane dispersions

1983-12-05

1986-07-22

McCamish, Marion C.

Stock material or miscellaneous articles

Composite

Of polyamidoester

427341, 427389, 428473, 428904, B32B 2700, B32B 2704

Patent

active

046019510

ABSTRACT:
A method of preparing an impregnated leather composite is provided. A low density leather sheet is impregnated with an aqueous ionic dispersion of a polyurethane polymer. The polyurethane polymer which is impregnated in the leather sheet is ionically coagulated from the dispersion. The impregnate is dried to form an impregnated leather composition.

REFERENCES:
patent: 3282726 (1963-08-01), Seligsberger
patent: 3761304 (1973-11-01), Hansson

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