公开(公告)号：US20180065096A1

公开(公告)日：2018-03-08

申请号：US15320442

申请日：2015-08-12

Applicant: VERSALIS S.P.A.

Inventor： Giovanni REGATTIERI ,  Gianni MARCHETTI ,  Alessandro BRANDOLIN

IPC: B01F7/00 ,  B01F7/22 ,  B01F7/16

CPC classification number: B01F7/00366 ,  B01F7/00208 ,  B01F7/00266 ,  B01F7/00641 ,  B01F7/1675 ,  B01F7/22

Abstract: The present invention relates to a rotor that comprises a series of shaped rotor blades whose circumferential section forms a standard NACA four-digit airfoil. Said rotor can be inserted in a stirring device that also comprises a stator, on whose inner surface shaped stator blades are positioned, whose circumferential section forms a standard NACA four-digit airfoil.

公开(公告)号：US20180362671A1

公开(公告)日：2018-12-20

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 ,  C08C2/02 ,  C08L7/02

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 non-polar 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：US20210340284A1

公开(公告)日：2021-11-04

申请号：US17372780

申请日：2021-07-12

Applicant: VERSALIS S.P.A.

Inventor： Giacomo GAGLIARDI ,  Giovanni REGATTIERI ,  Emanuele MAZZOTTI

IPC: C08C1/15 ,  C08L7/02 ,  C08C1/02 ,  C08C1/07 ,  C08C2/06 ,  C08C1/12

Abstract: The present invention relates to a solidification process of the natural rubber latex by means of polyquaternary polymers.
The process of the present invention has the advantage to not require the addition of acids and/or salts, with an evident saving in terms of cost for the reagents. Furthermore, in such a way neither the neutralization step of the rubber nor the treatment of the processing water before their disposal are required.
The process of the present invention is suitable both for the continuous and batchwise embodiment, with evident advantages as far as its industrial application is concerned.

公开(公告)号：US20190177442A1

公开(公告)日：2019-06-13

申请号：US16325012

申请日：2017-08-11

Applicant: VERSALIS S.P.A.

Inventor： Giacomo GAGLIARDI ,  Giovanni REGATTIERI ,  Emanuele MAZZOTTI

IPC: C08C1/15 ,  C08L7/02

Abstract: The present invention relates to a solidification process of the natural rubber latex by means of polyquaternary polymers. The process of the present invention has the advantage to not require the addition of acids and/or salts, with an evident saving in terms of cost for the reagents. Furthermore, in such a way neither the neutralization step of the rubber nor the treatment of the processing water before their disposal are required. The process of the present invention is suitable both for the continuous and batchwise embodiment, with evident advantages as far as its industrial application is concerned.