Isocyanate-terminated branched polyethylene glycol and polyester

Details Isocyanate-terminated branched polyethylene glycol and polyester Isocyanate-terminated branched polyethylene glycol and polyester

1975-11-25

1980-01-01

Cockeram, H. S.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

427244, 428290, 428310, 428317, 428425, 521159, 521162, 521901, B32B 2740, C08G 1877, B32B 3100, C08G 1814

Patent

active

041817702

ABSTRACT:
A hydrophilic foam is produced by mixing an isocyanate terminated branched polyethylene polyol with a polyester prepolymer and water. The foam may be used to impregnate fabrics, e.g., non-wovens, to produce reinforced sheets of foam of high absorbency and markedly improved abrasion resistance. Preferred polyesters are condensation products of adipic acid plus one or more alkanediols or a polylactone. Other prepolymers may also be included in the mix undergoing foaming, along with conventional additives.

REFERENCES:
patent: 3152162 (1964-10-01), Fischer et al.
patent: 3502601 (1970-03-01), Case et al.
patent: 3748217 (1973-07-01), May et al.
patent: 3775354 (1973-11-01), Hostettler et al.
patent: 3778390 (1973-12-01), Ulrich
patent: 3790509 (1974-02-01), Diehr
patent: 3806473 (1974-04-01), Lombardi et al.
patent: 3806474 (1974-04-01), Blair
patent: 3859162 (1975-01-01), Johnson et al.
patent: 3901959 (1975-08-01), Allport et al.
patent: 3929730 (1975-12-01), Graefe et al.
patent: 3962512 (1976-06-01), Fontana et al.
patent: 4006122 (1977-02-01), Chen et al.
patent: 4013701 (1977-03-01), Jabs et al.
Hackh's Chemical Dictionary (4th ed.) (McGraw-Hill) (New York) (1969) p. 303.

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