METHOD FOR THE PRODUCTION OF POLYETHER POLYOLS

    公开(公告)号:US20210221951A1

    公开(公告)日:2021-07-22

    申请号:US16477048

    申请日:2018-01-18

    IPC分类号: C08G65/30 C08G65/10

    摘要: The invention is related to a method for preparing polyether polyols, wherein the method comprises the steps of: a) providing a crude polyether polyols and a base catalyst; b) mixing the crude polyether polyols mixture with an acid thereby providing a neutralized polyether polyols mixture; c) removing water from the neutralized polyether polyols mixture, thereby providing a dehydrated neutralized polyether polyols mixture comprising polyether polyols and a suspension of the crystallized salts suspended in the polyether polyols; d) separating the polyether polyols from the crystallized salt by filtration resulting in a filtration cake comprising crystallized salts and remaining polyether polyols around the crystals; e) removing polyether polyols from the filter, leaving a filtration cake; f) redissolving the filtration cake obtaining a mixture of a salt solution and the remaining polyether polyols; and separating and removing the remaining polyether polyols from the salt solution.

    Process for printing cellulose containing textile fibre material

    公开(公告)号:US11008700B2

    公开(公告)日:2021-05-18

    申请号:US16497827

    申请日:2018-02-20

    摘要: The invention relates to a process for printing cellulose textile fibre material or cellulose/polyester mixed textile fibre material, characterised in that the fibre material is treated with a printing paste or printing ink containing a disperse dye of the formula wherein R1-R3 are each independently of the other hydrogen, halogen, C1-C8-alkyl or C1-C8-alkoxy, R4 denotes hydrogen, C1-C8-alkyl or a group of the formula —SO2—NR6R7, wherein R6 and R7 each independently of the other denote hydrogen, C1-C8-alkyl which is unsubstituted or substituted by hydroxy, halogen, C1-C8-alkoxy or C6-C24aryl, or C6-C30aralkyl which is unsubstituted or substituted by hydroxy, C1-C8alkyl, C1-C8alkoxy or halogen, R5 represents hydrogen, C1-C8-alkyl or a radical of the formula wherein R1-R4 are as defined above.