公开(公告)号：US20200010618A1

公开(公告)日：2020-01-09

申请号：US16481566

申请日：2018-01-30

Applicant: BASF SE

Inventor： Hartwig Voss ,  Felicitas Guth ,  Emiel Jan Kappert ,  Pedro Sa Gomes

IPC: C08G65/30 ,  B01D61/14 ,  B01D15/34 ,  B01D15/18

Abstract: Process for providing purified polyether block copolymers comprising polyoxyethylene (PEO) and polyoxypropylene (PPO) moieties wherein the purified product is obtained by an ultrafiltration step of a solution of the polyether block copolymers and wherein the block copolymers are depleted in lower molecular impurities.

公开(公告)号：US11685759B2

公开(公告)日：2023-06-27

申请号：US17286474

申请日：2019-10-17

Applicant: BASF SE

Inventor： Michael Puhl ,  Sebastian Wloch ,  Peter Oedman ,  Anne-Catrin Letzel ,  Hartwig Schroeder ,  Jacek Malisz ,  Daniel Seibert-Ludwig ,  Emiel Jan Kappert ,  Chung Huan Wong ,  Michael Barros Gross ,  Martin Viertelhaus

IPC: C07H1/08 ,  C07H3/06

CPC classification number: C07H1/08 ,  C07H3/06 ,  C07B2200/13

Abstract: The present invention relates to a method for obtaining crystalline 2′-fucosyllactose from a 2′-FL raw material, which contains 2′-FL as a main constituent and at least 0.5% by weight, frequently at least 1% by weight, in particular at least 2% by weight, more particularly at least 5% by weight, and especially at least 8% by weight,based on the total amount of mono-and oligosaccharides in the raw material, of one or more mono- or oligosaccharides different from 2′-FL, where the method comprises a)providing a solution of the 2′-FL raw material in water, which does not contain more than 10% by weight, preferably not more than 7% by weight, more preferably not more than 5% by weight of organic solvents, based on the total amount of water; b) effecting the crystallization of 2′-FL from the solution provided in step a) by inducing conditions of a controlled super saturation in the solution; and c) separating crystalline 2′-FL from the mother liquor, and where during controlled supersaturation in step b) not more than 10% by weight, preferably not more than 7% by weight, more preferably not more than 5% by weight of organic solvents are present, based on the total amount of water present during step b).