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Phosphorus- and metal-containing poly(ethylene terephthalate)—3. Synthesis of phosphorus- and cadmium-containing polymer

✍ Scribed by K. Troev; Ts. Kisiova; At. Grozeva; G. Borisov

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
420 KB
Volume
29
Category
Article
ISSN
0014-3057

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✦ Synopsis

A phosphorus-and cadmium-containing oligomer with ionic bonds was used as comonomer for modification of poly(ethylene terephthalate). With 0.4% P and 1.4% Cd, the modified material has the following characteristics: ~/r,I = 1.392; [COOH], 40.9 mg.eqv./g 10-6; m.p., 251°; diethylene glycol units, 2.23%; oligomers, 2.53%. The modifier acts as a cocatalyst in the transesterification and polycondensation processes. The modified polymer has significantly improved flame resistance.

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