Method of preparing composite sheet material

Details Method of preparing composite sheet material Method of preparing composite sheet material

D - Textiles, Paper

06

N

117/88.5

D06N 3/14 (2006.01) C08G 18/08 (2006.01)

Patent

CA 1127021

ABSTRACT A method of preparing a composite sheet material having properties similar to leather is provided. At least a portion of a porous sheet material is impregnated with an aqueous ionic dispersion of a polyurethane polymer. The polyurethane polymer which is impregnated in the porous sheet is ionically coagulated from the dispersion. Preferably, both the ionic dispersing and coagulating media are removed from the impregnated sheet. The impregnant is then dried to form a composite sheet material.

335171

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