Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Lignin or derivative doai
Patent
1993-01-27
1996-09-10
Robinson, Douglas W.
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Lignin or derivative doai
4241951, 514 54, 530500, 530501, 530502, 530506, 536 111, 536121, 536124, 5361231, A61K 3170, C07G 100, C08L 9700
Patent
active
055545963
ABSTRACT:
A composite molecular active substance group for use in restitutive chemotherapy against viral infections, which is produced by the process comprising: (a) preparing lignin units by carrying out an extraction in an aqueous media under weakly acidic or alkaline conditions of wood or wood-like materials and/or plant-cell cultures and separating-off the resultant insoluble solids; (b) preparing lignoid units by carrying out an aqueous alkaline extraction at a pH of 7 to 14 of starting materials selected from the group consisting of wood-incarbonization products and bioconverted wood-like materials and separating-off the resultant alkali-insoluble solids; and (c) preparing a water-soluble mixed polymer by reacting the lignin units from step (a) with the lignoid units from step (b), under aqueous alkaline isolating by ultrafiltration a low molecular weight fraction having a molecular weight of no more than 3000 daltons of the mixed polymer, taking a cut between 15 to 40 kilodaltons and discarding the resultant residue, and treating the resultant solution with an H.sup.+ cation exchanger at a pH of 3 to 7 and then carrying out further processing.
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Mach, deceased Walter
Mach, executor by Chantal
Lee Howard C.
Robinson Douglas W.
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