Minimum energy process for preparing block copolymers of polyami

Details Minimum energy process for preparing block copolymers of polyami Minimum energy process for preparing block copolymers of polyami

1976-11-08

1977-08-30

Lieberman, Paul

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 78R, 260 78A, C08L 7700

Patent

active

040455114

ABSTRACT:
Process for preparing block copolymer involves dry blending salt of a prepolyamide, e.g. a 30203-6 salt, and particules of melt-spinnable polyamide. Blend is heated to a temperature in the range of between from the melting point of higher melting component to below amide-interchange temperature of a blend of the melt-spinnable polyamide and the homopolymer which would result from the polymerization of the salt. Heating and mixing are continued until substantially all of the salt and the polyamide are converted into a block copolymer. The latter can be used to make fibers.

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 (1975-05-01), Fagerburg

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