Polyurethane having excellent elastic recovery and elastic filam

Details Polyurethane having excellent elastic recovery and elastic filam Polyurethane having excellent elastic recovery and elastic filam

1982-09-29

1984-03-27

Welsh, Maurice J.

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528906, C08G 1842

Patent

active

044395990

ABSTRACT:
A polyurethane having excellent elastic recovery is obtained by reacting an organic diisocyanate with a polycaprolactone polyester-diol prepared from a dihydric alcohol, a dibasic acid, an ester thereof or an anhydride thereof and .epsilon.-caprolactone or/and hydroxycaproic acid and having a hydroxyl value of 35 to 150 KOH mg/g and a content of .epsilon.-caprolactone and hydroxycaproic acid of 69 to 95% by weight.

REFERENCES:
patent: 3428611 (1969-02-01), Brotherton et al.
patent: 3775354 (1973-11-01), Hostettler et al.

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