Stabilized aqueous solution of a bisulphite blocked polyisocyana

Details Stabilized aqueous solution of a bisulphite blocked polyisocyana Stabilized aqueous solution of a bisulphite blocked polyisocyana

1975-03-24

1976-10-05

Tillman, Murray

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

81276, 8128A, 162164, 260 294R, 260 775TB, C08L 7504, D06M 1342, D06M 1512

Patent

active

039843653

ABSTRACT:
An aqueous solution of bisulphite blocked polyisocyanate prepolymers is imparted improved storage stability at temperatures up to about 45.degree. C by incorporation of about 0.5 to 20% by weight (based on the weight of bisulphite blocked prepolymer) of an aromatic or alkyl aromatic sulphonic acid of the formula:

REFERENCES:
patent: 2710816 (1955-06-01), Evans et al.
patent: 2746988 (1956-05-01), Doser
patent: 3491067 (1970-01-01), Sellet
patent: 3898197 (1975-08-01), Guise et al.

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