Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1986-08-18
1988-08-09
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528335, 528336, 528347, C08G 6928
Patent
active
047629100
ABSTRACT:
Process for the preparation of copolyamides from adipic acid, terephthalic acid and hexamethylene diamine containing 25-48% by weight of units of hexamethylene terephthalamide, by precondensing the monomers at a temperature of at least 250.degree. C. and a pressure of at least 35 bar and completing the polycondensation in the usual manner.
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patent: 3654236 (1972-04-01), Ridgway
patent: 4218509 (1980-08-01), Edgar et al.
patent: 4603166 (1986-07-01), Poppe et al.
Alewelt Wolfgang
Binsack Rudolf
Bottenbruch Ludwig
Fullmann Heinz-Josef
Nielinger Werner
Anderson Harold D.
Bayer Aktiengesellschaft
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