Copolymer of poly(4,7-dioxadecamethylene adipamide)-polycaprolac

Details Copolymer of poly(4,7-dioxadecamethylene adipamide)-polycaprolac Copolymer of poly(4,7-dioxadecamethylene adipamide)-polycaprolac

1978-09-25

1979-08-21

Lieberman, Paul

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

260 78R, 260 78A, C08L 7700

Patent

active

041653467

ABSTRACT:
Fibers of block copolymer of poly (4,7-dioxadecamethylene adipamide) - polycaprolactam, i.e. N-30203-6//6, have a tendency to fuse when scoured in boiling water. By replacing a minor amount of the adipic acid present in the N-30203-6 portion of the block copolymer with terephthalic acid the fusion is eliminated. The resulting novel composition consists of blocks of random N-30203-6 and N-30203-T with nylon-6 blocks. The composition maintains its good hydrophilic properties.

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T. M. Frunze et al: "On Heterochain Polyamides XVIII Formation of Mixed Polyamides During Melting of The Homochain Compounds," High Molecular Weight Compounds (U.S.S.R.) 1, 500-505 (1959), No. 4, Apr.

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