BOPI 12 BR / 2024 REPERTOIRE NUMERIQUE 27 O.A.P.I. – B.P. 887, YAOUNDE (Cameroun) – Tel. (237) 222 20 57 00 – Site web: http:/www.oapi.int – Email: oapi@oapi.int embodiments, the devices may be primary or secondary batteries. In various embodiments, these devices may be useful for energy storage. For example, bifacial sealed GDE assemblies of the various embodiments may form cathode electrodes (sometimes called air electrodes) of a battery, such as a metal-air battery. Fig. 2 ________________________________________ (11) 21748 Consulter le mémoire (51) C08C 1/06 (2023.01); C08C 3/00 (2023.01) ; C08L 7/02 (2023.01) (21) 1202400260 - PCT/IB2023/000064 (22) 24/01/2023 (30) US n° 63/267,167 du 26/01/2022 (54) Ammonia-free latex compositions. (72) RODRIGUEZ, Julio, Cesar (CO) et OSSWALD, Tim, A. (US) (73) AFLATEX TECHNOLOGIES, LDA, c/o António Vidal - Abreau Advogados, Av. Infante Dom Henrique 26, 1149-096 Lisboa (PT) (74) S.C.P AKKUM, AKKUM & Associates, No. 1777, rue 6.261, Yaoundé 2, Auditorium Jean Paul II boulevard, Face Brigade de Gendarmerie, Mbankolo, B.P. 4966, YAOUNDE (CM). (57) Provided herein are methods for processing natural rubber, also referred to as latex, without the use of ammonia. The methods provided herein may comprise one or more of the following steps: (a) a collection step wherein liquid latex is collected from a plant and, preferably, is filtered to remove impurities from the environment; (b) a stabilization step wherein a liquid latex composition is refrigerated and/or contacted with a stabilizing agent; (c) a preservation step wherein the liquid latex composition is contacted with a preserving agent; (d) a pH adjustment step wherein the liquid latex composition is contacted with a pH adjusting agent; (e) a storage step wherein the liquid latex composition is stored for a period of time; and (f) a coagulation step wherein the liquid latex composition is contacted with a coagulation agent, thereby forming a solid latex composition. Also provided herein are stabilized and preserved liquid latex compositions having a long shelf life, and solid rubber compositions having advantageous physical and chemical properties.
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