Process for preparing polyurethane emulsions

Details Process for preparing polyurethane emulsions Process for preparing polyurethane emulsions

Filed on

1974-10-25

Date issued

1976-09-28

Examiner

Ziegler, J.

Patent Class

Chemistry of carbon compounds

SubClass

Miscellaneous organic carbon compounds

Other Related Categories

260 18TN, 260 75NP, 260 775AM, C08L 7506

Type

Patent

Status

active

Patent number

039830586

Description

ABSTRACT:
Polyurethane emulsions are prepared by reacting a semi-ester containing at least one hydroxyl group and at least one carboxyl group which is produced from a polyhydroxyl compound and an acid anhydride with a polyisocyanate compound having at least two NCO groups which forms said polyurethane emulsion.

REFERENCES:
patent: 3522199 (1970-07-01), Keberle et al.
patent: 3773729 (1973-11-01), Wakimoto et al.

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