Stabilized aqueous solution of a bisulphite blocked...

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

C - Chemistry, Metallurgy

08

L

117/195, 400/741

C08L 75/04 (2006.01) C08G 18/10 (2006.01) D06M 13/395 (2006.01) D21H 17/57 (2006.01)

Patent

CA 1053824

Abstract of the Invention An aqueous solution of bisulphite blocked poly- isocyanate prepolymers is imparted improved storage stability at temperatures up to about 45°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: R(SO3H)n wherein R is an aromatic or alkyl aromatic hydrocarbon group having 6 to 15 carbon atoms and n is an integer from 1 to 3. The solution may also contain up to 80 volume percent (based on the total quantity of solvent) of an organic solvent miscible with water and having a boiling point below about 150°C. This solution may be used to finish paper, leather or textiles and to shrink proof keratin containing textiles.

222540

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