Process for the production of polysuccinimide
AssigneeSolutia Inc.
InventorYueting Chou
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Abstract
There is disclosed a process for preparing polysuccinimide by the thermal polycondensation of amino acids such as L-aspartic acid in the presence of an acidic catalyst for the polycondensation reaction and a surfactant either in the dry state or in the presence of a high boiling organic reaction medium whereby a polymer is provided more efficiently.
Claims26
A process for preparing polysuccinimide by the thermal polycondensation of L-aspartic acid which comprises carrying out the polymerization in the presence of an acidic catalyst and a surfactant selected from the group consisting of anionic and nonionic surfactants.
A process for preparing polysuccinimide by the thermal polycondensation of L-aspartic acid which comprises providing a high boiling organic reaction medium containing an acidic catalyst for the polycondensation reaction of L-aspartic acid, heating the acid in said medium in the presence of said catalyst and a surfactant for a sufficient time to polymerize said amino acid.
A process for the production of polysuccinimide by the thermal polycondensation of L-aspartic acid in the presence of a surfactant and phosphoric acid catalyst in an organic medium comprising dodecane at a temperature in the range of from about 140.degree. C. to about 200.degree. C. for a period of from about 1 to about 2 hours.
Dependencies are inferred from the claim text.