Title: Crosslinked hydrophilic foams and method

Abstract: The invention disclosed is for new improved hydrophilic crosslinked polyurethane foams prepared by reacting a blend of a monomeric polyol and polyoxyalkylene glycol (the --OH groups of said blend being capped with a polyisocyanate) with large amounts of an aqueous reactant. The resultant foams may be characterized with a broad spectrum of improved properties including hydrolytic stability and tensile strength.

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Inventors: Wood, Louis L. (Rockville, MD, US)
Frisch, Kurt C. (Grosse Ile, MI, US)

Application Number: 805458
Filing Date: 1977-06-10
Publication_date: 1979-01-30
Assignee: W. R. Grace & Co. (New York, NY)
Primary Class(es): 521/159 521/160, 521/176, 521/905
Other Classes:
US Patent Ref:

2726219	Dec, 1955	Hill	260/2.
3694301	Sep, 1972	Gruenewald	260/2.
3781231	Dec, 1973	Janssen	260/2.
3793241	Feb, 1974	Kyle	260/2.

Other Refs: 1429711

Mar, 1976	GB

Primary Examiner: Jacobs, Lewis T.
Assistant Examiner:
Attorney: Plunkett; Richard P., Pippenger; Philip M.