Branched thermoplastic copolyesters

Details Branched thermoplastic copolyesters Branched thermoplastic copolyesters

1972-03-20

1977-03-22

Czaja, Donald E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 75M, 260 75S, 260860, C08G 6320

Patent

active

040136248

ABSTRACT:
A segmented, branched thermoplastic copolyester containing intralinear long chain and short chain ester units is produced at a high rate if such production takes place in the presence of a critical amount of a branching agent, said branching agent having the general formula (HO).sub.a X (COOH).sub.b and having a molecular weight of about 92 to 5000, wherein X is a polyfunctional radical, a = 0-6, b = 0-4 and a + b = 3-6.

REFERENCES:
patent: 2895946 (1959-07-01), Huffman
patent: 3546180 (1970-12-01), Caldwell et al.

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