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公开(公告)号：US20180371112A1
公开(公告)日：2018-12-27
申请号：US16062178
申请日：2016-12-13
Applicant: Versalis S.p.A.
Inventor： Cecilia QUERCI , Maria CALDARARO , Mirko OLIOSI , Matteo RUSSO
Abstract: The present invention relates to the sector of the industry for extracting and processing natural rubber, and other components, from plant material. In particular, the invention relates to a process for extracting resin and rubber from guayule and/or guayule type plants, which comprises harvesting, preserving and mechanically and chemically treating the parts of the plant, applicable both in the laboratory and on an industrial scale, characterized by significantly high quantity yields and high quality of the extracted products.
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公开(公告)号：US20180171178A1
公开(公告)日：2018-06-21
申请号：US15579785
申请日：2016-07-29
Applicant: versalis S.p.A.
Inventor： Cecilia QUERCI , Danilo DEL PRETE , Maria CALDARARO , Gianni GIROTTI
IPC: C09F1/04 , C08C1/04 , C07J53/00 , C07J71/00 , B01D9/00 , B01D17/02 , C07C29/09 , C07C67/03 , C07C67/52 , C07C67/56 , C07C67/58
Abstract: Method for the separation of at least one isoprenic constituent from the resin of a plant of guayule and/or of the guayule type comprising the steps of: a) providing a defatted resin of guayule and/or of the guayule type; b) subjecting the defatted resin to partitioning of the liquid-liquid type with solvents that are immiscible in each other thus obtaining an apolar extract containing the isoprenic constituents guayulin A, guayulin B and argentatin B; and a polar extract containing the isoprene constituents argentatin A, argentatin C and argentatin D; and c) separating at least one isoprenic constituent from said polar extract and/or from the apolar extract thus obtained, wherein step c) comprises a step in which the polar extract is subjected to partitioning of the liquid-liquid type with solvents immiscible in each other and/or a step in which the apolar extract is subjected to partitioning of the solid-liquid type.
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