US 12,390,745 B2
Process for producing water-resistant films from corn gluten meal
Anne Lamp, Hamburg (DE)
Assigned to Traceless Materials GmbH, Hamburg (DE)
Appl. No. 18/008,151
Filed by Traceless Materials GmbH, Hamburg (DE)
PCT Filed Jun. 9, 2020, PCT No. PCT/EP2020/065914
§ 371(c)(1), (2) Date Dec. 2, 2022,
PCT Pub. No. WO2021/249621, PCT Pub. Date Dec. 16, 2021.
Prior Publication US 2023/0271106 A1, Aug. 31, 2023
Int. Cl. B01D 11/02 (2006.01); B01D 21/00 (2006.01); B29B 17/00 (2006.01); C08J 7/04 (2020.01)
CPC B01D 11/0284 (2013.01) [B01D 11/0257 (2013.01); B01D 11/0292 (2013.01); B01D 21/00 (2013.01); B29B 17/00 (2013.01); C08J 7/04 (2013.01); C08J 2399/00 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A process for producing a plastic material, comprising the steps:
i) providing a corn gluten source as a first solid phase and a first liquid phase comprising an organic solvent;
(ii) extracting solvent-soluble components of the corn gluten source into the first liquid phase;
(iii) precipitating a first fraction of the solvent-soluble components out of the first liquid phase, involving cooling of the first liquid phase, resulting in a second solid phase including the first fraction of the solvent-soluble components and a second liquid phase including a second fraction of the solvent-soluble components;
(iv) separating the second solid phase and the second liquid phase; and
(v) recovering a flexible plastic material from the second liquid phase or recovering a hard plastic material from the second solid phase,
wherein the process is performed without addition of plasticizer external to the source or with addition of less than 5% plasticizer external to the source relative to the total weight of the plastic material being recovered.