Polyurethane latexes from sulfonate prepolymer, aqueous chain ex

Details Polyurethane latexes from sulfonate prepolymer, aqueous chain ex Polyurethane latexes from sulfonate prepolymer, aqueous chain ex

1974-10-11

1978-08-29

Tillman, Murray

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

528273, 528295, 528 83, 528 77, 528 76, 528 79, 528 75, C08L 7508, C08G 7102

Patent

active

041102843

ABSTRACT:
Process of preparing anionic polyurethane latexes without the addition of a foreign emulsifying surface active agent comprising rendering the basic polyester or polyether constituent of the latex intrinsically emulsifiable or dispersible in water by incorporating an anionic functional group in the chain thereof and reacting this basic constituent with a diisocyanate in order to obtain a prepolymer which is then emulsified in water.
The latexes obtained are advantageously applied in coating and impregnation processes, finishing of leather, and as binders for nonwoven fabrics.

REFERENCES:
patent: 3479310 (1969-11-01), Dieterich et al.
patent: 3617352 (1971-11-01), Shima et al.
patent: 3734874 (1973-05-01), Kibler et al.
patent: 3736216 (1973-05-01), Hermann et al.
patent: 3759873 (1973-09-01), Hudak
patent: 3879450 (1975-04-01), Velker et al.

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