Foam products

Details Foam products Foam products

1981-01-26

1982-07-13

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

424 76, 521107, 521113, 521114, 521116, 521117, 521121, 521128, 521130, 521131, 521159, C08G 1814

Patent

active

043395503

ABSTRACT:
Foam products are disclosed which are produced by incorporating active materials, utilizing in situ methods, into the cell structure of hydrophillic polyurethane foams. The products obtained are characterized by a controlled rate of release of the active material from the foam structure.

REFERENCES:
patent: 3034996 (1962-05-01), Kaplan
patent: 3127312 (1964-03-01), Boyer
patent: 4156067 (1979-05-01), Gould
patent: 4226944 (1980-10-01), Stone et al.

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