Flexible Water-Absorbent Foams from MDI

Louis L. Wood , A Hydrophilic Polyurethane Foam System, Journal of Cellular Plastics, Sept./Oct. 1976, pp. 285-88.

Clifton L. Kehr and Andrew B. Holmstrem , Foamable Hydrophilic Polyisocyanates With Low Dermal Sensitization, Soap & Cosmetics/Chemical Specialties, March 1979.

U.S. Patent 3,812,619, Louis L. Wood and Kurt C. Frisch , Horticultural Foam Structure and Method, assigned to W. R. Grace & Co., May 28, 1974.

U.S. Patent 3,903,232, Louis L. Wood and Kurt C. Frisch , Dental and Biomedical Foams and Method, assigned to W. R. Grace & Co., Sept. 2, 1975.

U.S. Patent 4,137,200, Louis L. Wood and Kurt C. Frisch , Crosslinked Hydrophilic Foams and Method, assigned to W. R. Grace & Co., Jan. 30, 1979.

U.S. Patent 4,165,411, Nelson S. Marans , Clifton L. Kehr , and Robert M. Murch , Flame Retardant Urethane and Method, assigned to W. R. Grace & Co., Aug. 21, 1979.

James L. Guthrie and Robert W. McKinney , Determination of 2,4- and 2,6-Diaminotoluene in Flexible Urethane Foams, Analytical Chemistry, 49, No. 12, 1676-1680 (October 1977 ).

Michael R. Cummins , W. R. Grace & Co., Organic Chemicals Division, Product Bulletin of April 15, 1981 55 ( Hayden Avenue,Lexington, MA 02173).

British Patent 874,430, John F. Chapman , et al., Aug. 10, 1961.

U.S. Patent 4,237,240, Wolfgang Jarre , Peter Weyland , and Gerhard Mueller , assigned to BASF Aktiengesselschaft, Dec. 2, 1980.

U.S. Patents 4,377,645 (March 22, 1983); 4,384,050 and 4,384,051 (May 17, 1983; all assigned to W. R. Grace and Company.