Melt blending polyamide process

Details Melt blending polyamide process Melt blending polyamide process

1976-11-26

1977-08-30

Lieberman, Paul

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 78R, 260 78A, C08L 7700

Patent

active

040455122

ABSTRACT:
Improved melt blending process for preparing block copolymer of poly(4,7-dioxadecamethylene adipamide)-polycaprolactam, 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 scoured in boiling water.

REFERENCES:
patent: 2577621 (1951-12-01), May
patent: 3397107 (1968-08-01), Kimura
patent: 3499853 (1970-03-01), Griebsch
patent: 3509106 (1970-04-01), Lotz
patent: 3549724 (1970-12-01), Okazaki
patent: 3683047 (1972-08-01), Honda
patent: 3729449 (1973-04-01), Kimura
patent: 3863609 (1974-10-01), Kimura
patent: 3882090 (1975-06-01), Fagerburg
Formation of Mixed Polyamides During Melting of the Homochain Compounds; T. M. Frunze et al., High Molecular Weight Compounds (U.S.S.R.)1, 500-505, No. 4, Apr. (1959).

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