Melt blending to make non-fusing block polyamides

Details Melt blending to make non-fusing block polyamides Melt blending to make non-fusing block polyamides

C - Chemistry, Metallurgy

08

G

400/2016

C08G 81/00 (2006.01) C08G 69/00 (2006.01) C08G 69/14 (2006.01)

Patent

CA 1106994

Thompson-Nickol S-76-055 INVENTORS: ROBERT M. THOMPSON 2313 Berwyn Road (Chalfonte) Wilmington, New Castle County State of Delaware 19803 STEPHEN L. NICKOL 224 Pinehurst Road Wilmington, New Castle County State of Delaware 19803 TITLE OF THE INVENTION: "IMPROVED MELT BLENDING POLYAMIDE PROCESS" ABSTRACT OF THE DISCLOSURE Improved melt blending process for preparing block copolymer of poly(4,7-dioxadecamethylene adipamide)-polycapro- lactam, which is also known as N-30203-6//6, involves continuing the melt blending until the polymer is characterized in that the maximum amount of the block copolymer recovered from an aqueous formic acid solution containing the dissolved block copolymer exceeds about 90%. Fiber prepared from such a characterized block copolymer does not fuse when secured in boiling water. -1-

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