Flynn, Thiel, Boutell & Tanis
Polyurethane having excellent elastic recovery and elastic filament of the same
 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. 
Daicel Chemical Industries, Ltd.
Y C
Y10S C08G
additional inventional
Yoshiyuki Naoki Shoji Takuya
Ikemoto Nakashima Watanabe Miho