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1.发明授权公开(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
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.
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公开(公告)号：US09090746B2
公开(公告)日：2015-07-28
申请号：US14357585
申请日：2012-11-23
Applicant: VERSALIS S.P.A.
Inventor： Maria Parisi , Piero Maestri
CPC classification number: C08J3/00 , C08C2/00 , C08C2/06 , C08F6/10 , C08J2309/06
Abstract: A process for the removal of solvent from a polymeric solution including at least one elastomeric polymer. The polymeric solution is subjected to a stripping step by means of water vapor, in the presence of a dispersant system including: from 0.005% by weight to 1% by weight, with respect to the total weight of the dry elastomeric polymer, of at least one lamellar material; from 0.0005% by weight to 1% by weight, with respect to the total weight of the dry elastomeric polymer, of at least one cationic surfactant.
Abstract translation: 用于从包含至少一种弹性体聚合物的聚合物溶液中除去溶剂的方法。 在分散剂体系存在下，通过水蒸汽对聚合物溶液进行汽提步骤，包括：相对于干弹性体聚合物的总重量为0.005重量％至1重量％，至少 一层薄片材料 至少一种阳离子表面活性剂，相对于干燥的弹性体聚合物的总重量为0.0005重量％至1重量％。
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公开(公告)号：US20140323674A1
公开(公告)日：2014-10-30
申请号：US14357585
申请日：2012-11-23
Applicant: VERSALIS S.P.A.
Inventor： Maria Parisi , Piero Maestri
IPC: C08J3/00
CPC classification number: C08J3/00 , C08C2/00 , C08C2/06 , C08F6/10 , C08J2309/06
Abstract: A process for the removal of the solvent from a polymeric solution including at least one elastomeric polymer, which comprises subjecting said polymeric solution to a stripping step by means of water vapour, in the presence of a dispersant system comprising: —from 0.005% by weight to 1% by weight, preferably from 0.008% by weight to 0.8% by weight, with respect to the total weight of the dry elastomeric polymer, of at least one lamellar material; —from 0.0005% by weight to 1% by weight, preferably from 0.0008% by weight to 0.8% by weight, with respect to the total weight of the dry elastomeric polymer, of at least one cationic surfactant.
Abstract translation: 一种用于从包括至少一种弹性体聚合物的聚合物溶液中除去溶剂的方法，该方法包括在分散剂体系存在下使所述聚合物溶液通过水蒸气进行汽提步骤，所述分散剂体系包含： - 0.005重量％ 至少一种层状材料，相对于干弹性体聚合物的总重量为1重量％，优选为0.008重量％至0.8重量％ - 至少一种阳离子表面活性剂，相对于干弹性聚合物的总重量，从0.0005重量％至1重量％，优选0.0008重量％至0.8重量％。
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