METHOD FOR OBTAINING AN ANTIOXIDANT COMPOSITION FROM LIGNIN, LIGNIN LIQUOR OR BLACK LIQUOR

    公开(公告)号:WO2023037013A1

    公开(公告)日:2023-03-16

    申请号:PCT/EP2022/075452

    申请日:2022-09-13

    申请人: FUNDACIÓN CENER

    IPC分类号: C07G1/00

    摘要: The invention relates to a method for producing an antioxidant composition from lignin, lignin liquor or black liquor which comprises contacting the lignin, lignin liquor or black liquor with an oxidizing agent, wherein said contacting is carried out in alkaline conditions and at a temperature above 160 °C, wherein when the oxidizing agent is oxygen, a gas mixture comprising oxygen or an oxygen-generating compound or composition, then the agent is added so that the oxygen partial pressure is below 0.3 MPa. The invention also relates to the antioxidant composition obtained by the method of the invention and to the uses thereof.

    CHELATOR-MEDIATED FENTON (CMF) PROCESS TO BREAK A C-C BOND IN LIGNOSULFONATE

    公开(公告)号:WO2022232189A1

    公开(公告)日:2022-11-03

    申请号:PCT/US2022/026407

    申请日:2022-04-26

    发明人: KENT, Michael, S.

    IPC分类号: C07G1/00 C08H7/00

    摘要: The present invention provides for a method to break a C-C bond in lignosulfonate, the method comprising: (a) optionally sulfonating a lignin to produce a lignosulfonate, (b) contacting a chelator/Fe complex or a Fe(II) cation with a lignosulfonate to produce a reaction mixture, (c) incubating the reaction mixture for a suitable period of time wherein at least one C-C bond in a lignosulfonate is broken, (d) optionally introducing an oxidizing agent to the reaction mixture, and (e) optionally separating two separate molecules formed from breaking the C-C bond of lignosulfonate.

    FAÇADE SYSTEM AND INSULATION ELEMENT FOR A FAÇADE SYSTEM

    公开(公告)号:WO2022144103A1

    公开(公告)日:2022-07-07

    申请号:PCT/EP2021/077135

    申请日:2021-10-01

    摘要: The invention relates to a façade system for a building, in particular an External Thermal Insulation Composite System (ETICS), comprising a thermal and/or acoustic insulation, consisting of at least one insulation element being a bonded mineral fibre product made of mineral fibres, preferably stone wool fibres, and a cured aqueous binder composition free of phenol and formaldehyde, wherein the insulation element is fixed to an outer surface of the building by mechanical fastening elements and/or an adhesive, covered with a rendering, and whereby the aqueous binder composition prior to curing comprises a component (i) in form of one or more lignosulfonate lignins having a carboxylic acid group content of 0.03 to 2.0 mmol/g, based on the dry weight of the lignosulfonate lignins and a component (ii) in form of one or more cross-linkers, and wherein the insulation element has a bulk density between 70 kg/m3 and 150 kg/m3.

    MULTILAYER FILM COMPRISING HIGHLY REFINED CELLULOSE FIBERS

    公开(公告)号:WO2021209918A1

    公开(公告)日:2021-10-21

    申请号:PCT/IB2021/053072

    申请日:2021-04-14

    申请人: STORA ENSO OYJ

    摘要: The present invention relates to a method for manufacturing a multilayer film comprising highly refined cellulose fibers, the method comprising the steps of: a) forming a first wet web by applying a first pulp suspension comprising highly refined cellulose fibers on a first wire; b) partially dewatering the first wet web to obtain a first partially dewatered web; c) forming a second wet web by applying a second pulp suspension comprising highly refined cellulose fibers on a second wire; d) partially dewatering the second wet web to obtain a second partially dewatered web; e) joining the first and second partially dewatered web to obtain a multilayer web; and f) further dewatering, and optionally drying, the multilayer web to obtain a multilayer film comprising highly refined cellulose fibers; wherein at least one of said first and second pulp suspension comprises lignin at a concentration in the range of 0.1-50 wt%, based on the total dry weight of the pulp suspension.