Polyurethane hydrogels having enhanced wetting rates

Details Polyurethane hydrogels having enhanced wetting rates Polyurethane hydrogels having enhanced wetting rates

1978-08-31

1980-01-08

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 61, C08G 1810

Patent

active

041828275

ABSTRACT:
The wetting rates of polyurethane hydrogels comprising lightly crosslinked polymers of isocyanate terminated prepolymers which are the reaction product of (i) poly(alkyleneoxy) polyols with (ii) organic diisocyanates that has been lightly crosslinked with (iii) water or an organic polyamine are enhanced by treating the surface of the solid hydrogel with certain ketones, alcohols, organic amines, aromatic hydrocarbons or aqueous alkali metal hydroxide solutions.

REFERENCES:
patent: 3939105 (1976-02-01), Jones et al.
patent: 3939123 (1976-02-01), Matthews et al.
patent: 3940542 (1976-02-01), Knopf et al.

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