公开(公告)号：US10913804B2

公开(公告)日：2021-02-09

申请号：US16061948

申请日：2016-12-13

Applicant: Versalis S.p.A.

Inventor： Tommaso Prando ,  Giovanni Regattieri ,  Maria Parisi ,  Dario Ghidoni

IPC: C08C1/04 ,  C08C1/14 ,  C08C2/02 ,  C08L7/02 ,  B01D11/02

Abstract: The present invention relates to a process for separating natural rubber deriving from non-Hevea type plants, in the form of solid crumbs, from solutions in an organic solvent system including it, where said organic solvent system may comprise at least one nonpolar organic solvent, or a mixture of at least one nonpolar organic solvent and at least one polar organic solvent, and the concomitant removal of said organic solvent system from said rubber, where the aforementioned process comprises subjecting said solution to a stripping stage by means of water vapor, in presence of a dispersing system, separating the aforementioned crumbs of natural rubber from the liquid phase, obtained through the stripping stage, and subjecting said crumbs to drying.

公开(公告)号：US10654945B2

公开(公告)日：2020-05-19

申请号：US16062176

申请日：2016-12-13

Applicant: Versalis S.P.A.

Inventor： Cecilia Querci ,  Alessandro Del Seppia ,  Mirko Oliosi ,  Tommaso Prando

IPC: C08C1/06 ,  C08C1/075 ,  C08C1/02 ,  C08J99/00 ,  C08L7/02

Abstract: The present invention relates to the industrial sector of extracting and processing natural rubber, and other components, from plant material. In particular, the invention relates to a process for extracting latex, resin and rubber from guayule and/or guayule-type plants, which comprises harvest, preservation, mechanical and chemical treatment of the plant parts, which is applicable both in the laboratory and on an industrial scale and is characterised by significantly high yields and high quality of the extracted products.