Polyamide preparation from polycarboxylic acid and polyamine wit

Details Polyamide preparation from polycarboxylic acid and polyamine wit Polyamide preparation from polycarboxylic acid and polyamine wit

1985-09-10

1987-02-24

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

528 21, 528 26, 528182, 528183, 528188, 528224, 528229, 528315, 528337, 528351, 528352, 528353, C08G 6928

Patent

active

046458239

ABSTRACT:
A process for preparing polyamides which comprises polycondensing dicarboxylic acids having the following general formula and diamines by using carbodiimides as the condensing agent. ##STR1## wherein X is a group having a valence of (m+2), and C.sub.6-20 carbocyclic group, C.sub.3-20 heterocyclic group, C.sub.2-20 alkyl group, or C.sub.2-20 alkenyl group, the group having at least one carbon-carbon double bond in the position of conjugating to carboxylic acid radical or the group having an .alpha.,.beta.-unsaturated ketone structure;

REFERENCES:
patent: 2130523 (1938-09-01), Carothers
patent: 2878235 (1959-03-01), Butler et al.
patent: 3015652 (1962-01-01), Schnell et al.
patent: 4465821 (1984-08-01), Nielinger et al.
Morgan, Condensation Polymers by Interfacial and Solution Methods, Chapter IV, pp. 115 to 162 (1965).
Ueda et al., Journal of Polymer Science, Polymer Chem. Edition, vol. 23, 1607-1613 (1985).

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