Dissolution of polyurethane foams and re-use of the products the

Details Dissolution of polyurethane foams and re-use of the products the Dissolution of polyurethane foams and re-use of the products the

1977-10-17

1979-07-03

Ziegler, J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

521164, 528 85, C08J 938

Patent

active

041599721

ABSTRACT:
A recycling process for flexible polyurethane foam which comprises dissolving the foam in low molecular weight diol, admixing therewith high molecular weight polyol that is suitable for preparation of flexible urethane foam, removing under vacuum low molecular weight diol solvent from the admixture obtained, and recovering the residue which comprises polyol product that may be used to provide new flexible foam with desirable properties including advantageous tear strength.

REFERENCES:
patent: 2937151 (1960-05-01), Broeck et al.
patent: 3738946 (1973-06-01), Frulla et al.
patent: 3983087 (1976-09-01), Tucker et al.

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