Polyaspartic acid manufacture

Details Polyaspartic acid manufacture Polyaspartic acid manufacture

C - Chemistry, Metallurgy

08

G

C08G 73/10 (2006.01) C07D 207/408 (2006.01) C08G 69/10 (2006.01) C09K 8/528 (2006.01)

Patent

CA 2164832

Polyaspartic acid having a weight average molecular weight of 1000 to 5000 is produced by hydrolysis of anhydropolyaspartic acid that has been produced by condensation polymerization of L-aspartic acid. Conversion in excess of 80 percent is achievable utilizing "temperature vs. time" profiles.

L'invention se rapporte à la production d'acide polyaspartique ayant un poids moléculaire moyen de 1 000 à 5 000, par hydrolyse de l'acide anhydropolyaspartique produit par polycondensation de l'acide L-aspartique. Il est possible d'obtenir un taux de transformation excédant 80 % en utilisant des courbes de température en fonction du temps.

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