Process for the preparation of polyimides or of their biodegrada

Details Process for the preparation of polyimides or of their biodegrada Process for the preparation of polyimides or of their biodegrada

1996-06-27

1997-11-18

Acquah, Samuel A.

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

Synthetic resins

From carboxylic acid or derivative thereof

528312, 528313, 528314, 528315, 528318, 528322, 528499, 524706, 524730, 524742, 524745, 252 891, C08G 6908, C08G 7310, C08K 332

Patent

active

056889020

ABSTRACT:
Process for the preparation of polyimides or of their polypeptide hydrolysates which are at least 80% biodegradable, by thermal polycondensation of at least one amino acid, optionally followed by hydrolysis, the thermal polycondensation step being carried out in the presence of at least one "acid catalyst" chosen from

REFERENCES:
patent: 3052655 (1962-09-01), Fox et al.
patent: 3927204 (1975-12-01), Neri et al.
patent: 4675381 (1987-06-01), Bichon
patent: 4892733 (1990-01-01), Bichon
patent: 5457176 (1995-10-01), Adler et al.
Journal of Medicinal Chemistry (Neri et al.), vol. 18, No. 8, pp. 893-897, Aug. 1973.
French Preliminary Search Report #FR9314043.
French Preliminary Search Report #FR9314042.

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