Invention Grant
- Patent Title: Process for separating non-Hevea natural rubber in solid form from solutions including it
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Application No.: US16061948Application Date: 2016-12-13
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Publication No.: US10913804B2Publication Date: 2021-02-09
- Inventor: Tommaso Prando , Giovanni Regattieri , Maria Parisi , Dario Ghidoni
- Applicant: Versalis S.p.A.
- Applicant Address: IT San Donato Milanese
- Assignee: Versalis S.p.A.
- Current Assignee: Versalis S.p.A.
- Current Assignee Address: IT San Donato Milanese
- Agency: Praedcere Law
- Priority: IT102015000082623 20151214
- International Application: PCT/IB2016/057573 WO 20161213
- International Announcement: WO2017/103782 WO 20170622
- Main IPC: C08C1/04
- 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.
Public/Granted literature
- US20180362671A1 PROCESS FOR SEPARATING NON-HEVEA NATURAL RUBBER IN SOLID FORM FROM SOLUTIONS INCLUDING IT Public/Granted day:2018-12-20
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