公开(公告)号：EP3353232B1

公开(公告)日：2020-12-02

申请号：EP16770771.0

申请日：2016-09-26

Applicant: SAPPI Netherlands Services B.V.

Inventor： MENENDEZ GONZALEZ, Reyes ,  TRAMBITAS, Daniela Oana ,  CANTEKIN, Seda ,  GRAVESON, Ian ,  JENNEKENS, Math ,  MOMIN, Saschi

IPC: C08J3/12 ,  B01D1/18 ,  F26B3/12 ,  D21C9/00

公开(公告)号：EP3310856A1

公开(公告)日：2018-04-25

申请号：EP16733009.1

申请日：2016-06-16

Applicant: SAPPI Netherlands Services B.V.

Inventor： BALLET, Wim ,  CANTEKIN, Seda ,  DUARTE, Gustavo ,  MOMIN, Saschi ,  SIMONS, Jo

IPC: C08L1/02 ,  D21C9/00

CPC classification number: C08L1/02 ,  C08J3/09 ,  C08J3/12 ,  C08J2301/02 ,  C08L2201/56

Abstract: The present invention provides for a dispersion containing cellulose particles dispersed in a continuous liquid phase comprising a first and a second continuous liquid phase, wherein the first continuous liquid phase consists of a liquid swelling agent or an aqueous solution of said liquid swelling agent, and the second continuous liquid phase comprises, preferably consists of, one or more organic solvents, with the proviso that the one or more organic solvents of the second continuous liquid phase are not capable of dissolving cellulose, have a boiling point higher than the boiling point of the first continuous liquid phase, and are miscible with the constituents of the swelling composition.

公开(公告)号：EP3184549A1

公开(公告)日：2017-06-28

申请号：EP15202027.7

申请日：2015-12-22

Applicant: SAPPI Netherlands Services B.V.

Inventor： ENGLISH, Robert ,  GRAVESON, Ian ,  MOMIN, Saschi ,  FERLIN, Nadège

IPC: C08B3/08 ,  C08B3/10

CPC classification number: C08B3/08 ,  C08B3/10

Abstract: A process for the preparation of particulate acylated biopolymer comprising anhydroglucose units, said process comprising the steps of
a. dispersing an amount of particulate non-surface modified biopolymer comprising anhydroglucose units in an amount of a liquid alkenyl carboxylate, or of a mixture of two or more liquid alkenyl carboxylates, in order to form a first dispersion,
b. adding a catalytic composition to the first dispersion such a to form a second dispersion,
c. heating the second dispersion to a temperature above ambient temperature
d. cooling the second dispersion to ambient temperature,
e. isolating the obtained particulate acylated biopolymer,
wherein the amount of a liquid alkenyl carboxylate, or a mixture of two or more liquid alkenyl carboxylates, corresponds to a molar excess of alkenyl carboxylate, the molar excess being defined with respect to the moles of anhydroglucose units comprised in the amount of the particulate non-surface modified biopolymer, and wherein the catalytic composition comprises an amount of one, or two or more, non-nucleophilic bases

Abstract translation: 一种制备包含脱水葡萄糖单元的颗粒酰化生物聚合物的方法，所述方法包括以下步骤：a。 将一定量的包含脱水葡萄糖单元的颗粒状非表面改性的生物聚合物分散在一定量的液体烯基羧酸盐或两种或更多种液体烯基羧酸盐的混合物中以形成第一分散体，b。 向第一分散体中加入催化组合物以形成第二分散体，c。 将第二分散体加热至高于环境温度d的温度。 将第二分散体冷却到环境温度，例如， 分离所获得的颗粒酰化生物聚合物，其中液体烯基羧酸盐或两种或更多种液体烯基羧酸盐的混合物的量对应于摩尔过量的烯基羧酸盐，所述摩尔过量相对于包含的脱水葡萄糖单元的摩尔数 其量为所述颗粒非表面改性的生物聚合物的量，并且其中所述催化组合物包含一定量的一种或两种或更多种非亲核性碱