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    PROCESS FOR SPINNING ALKALINE CELLULOSE SPIN DOPE
    1.
    发明申请
    PROCESS FOR SPINNING ALKALINE CELLULOSE SPIN DOPE 审中-公开

    公开(公告)号：WO2023280779A1

    公开(公告)日：2023-01-12

    申请号：PCT/EP2022/068459

    申请日：2022-07-04

    Applicant: TREETOTEXTILE AB

    Inventor： HEDLUND, Artur ,  HAGSTRÖM, Bengt

    IPC: D01D4/02 ,  D01D5/06 ,  D01F2/00 ,  D01F2/02 ,  D01D1/02

    Abstract: Disclosed is a process for spinning an alkaline cellulose spin dope, comprising dissolved cellulose, to cellulose filaments (10). The process comprising the steps of: - feeding the alkaline cellulose spin dope to at least one spinning head (20) with a plurality of holes (21), wherein the spinning head (20) comprises at least two parallel, rectangular spinneret dies (22), each with a plurality of holes (21), the spinneret dies (22) being arranged spaced apart with a flow spacing (23) in between them; - extruding the alkaline cellulose spin dope through the plurality of holes (21) into a flow (35) of aqueous alkaline coagulation bath liquid, the aqueous alkaline coagulation bath liquid comprising a sodium coagulation salt, whereby forming cellulose filaments (10), wherein the aqueous alkaline coagulation bath liquid flows through the flow spacing (23) and then past the spinneret dies (22) in a flow direction, the flow direction of the aqueous alkaline coagulation bath liquid being parallel to the direction in which the alkaline cellulose spin dope is extruded into the aqueous alkaline coagulation bath liquid; and - withdrawing the cellulose filaments (10) from the aqueous alkaline coagulation bath liquid.

    METHOD OF SPINNING ALKALI CELLULOSE
    2.
    发明申请
    METHOD OF SPINNING ALKALI CELLULOSE 审中-公开

    公开(公告)号：WO2023280778A1

    公开(公告)日：2023-01-12

    申请号：PCT/EP2022/068458

    申请日：2022-07-04

    Applicant: TREETOTEXTILE AB

    Inventor： HEDLUND, Artur ,  HAGSTRÖM, Bengt

    IPC: D01D4/02 ,  D01D5/06 ,  D01F2/00 ,  D01F2/02 ,  D01D1/02

    Abstract: A process for spinning an alkaline cellulose spin dope, comprising dissolved cellulose, into an aqueous alkaline coagulation bath liquid, comprising a coagulation salt, whereby forming cellulose filaments. The process comprising the steps of: - feeding the alkaline cellulose spin dope to a spinneret die (110) with a plurality of holes (120) arranged in at least one group (130) such that the distance (D1) from the center of any given hole (120) in the group (130) to the closest point on the perimeter (131) of the group (130) does not exceed 3 mm, such as 2 mm, the diameter of each hole (120) being 40 to 100 µm; - extruding the alkaline cellulose spin dope through the holes (120) into the aqueous alkaline coagulation bath liquid, whereby forming cellulose filaments; and - withdrawing the cellulose filaments from the aqueous alkaline coagulation bath liquid; wherein holes (121) at the perimeter (131) of the group (130) is in direct contact with aqueous alkaline coagulation bath liquid.

    一种基于多尺度纤维素纳米纤维的高效空气过滤材料的制备方法
    6.
    发明申请
    一种基于多尺度纤维素纳米纤维的高效空气过滤材料的制备方法 审中-公开

    公开(公告)号：WO2022095099A1

    公开(公告)日：2022-05-12

    申请号：PCT/CN2020/128894

    申请日：2020-11-16

    Applicant: 苏州纳昇源新材料科技有限公司

    Inventor： 马翔

    IPC: B01D39/16 ,  B01D46/00 ,  D01F2/00

    Abstract: 一种基于多尺度纤维素纳米纤维的高效空气过滤材料的制备方法，所述基于多尺度纤维素纳米纤维的高效空气过滤材料的制备方法包括如下步骤：纤维素提取，对多尺度纤维素进行预处理，利用物理处理法和化学处理法辅助对多尺度纤维素纳米纤维进行提取；静电纺丝，对提取的多尺度纤维素进行静电纺丝处理，将纤维素纳米纤维加工成型；抗菌纤维处理，对聚壳糖纤维和苎麻纤维进行处理，将两种纤维混合均匀；混纺处理，将抗菌纤维与纺丝后的多尺度纤维素纳米纤维以及芳纶纤维混纺；多层组合，根据滤芯尺寸大小进行裁剪制成过滤片；嵌合、烘干。一种经过静电纺丝的基于多尺度纤维素纳米纤维的高效空气过滤材料的制备方法。

    TRIAZINE COMPOUNDS
    7.
    发明申请
    TRIAZINE COMPOUNDS 审中-公开

    公开(公告)号：WO2022023736A1

    公开(公告)日：2022-02-03

    申请号：PCT/GB2021/051937

    申请日：2021-07-28

    Applicant: UNIVERSITY OF LEEDS

    Inventor： LEWIS, David ,  CARR, Christopher ,  RIGOUT, Muriel ,  BROADBENT, Peter

    IPC: C08B11/14 ,  D01F2/00 ,  D06M13/358 ,  D06M13/412

    Abstract: The invention relates to a triazine compound of formula I or formula II: wherein X comprises a cellulosic material; R1 and R2 are independently selected from –ONR'R", –NR'R'', or –Y wherein R' and R'' are independently selected from H, alkyl having 1 to 18 carbons, alkoxy having 1 to 18 carbons, alkenyl having 2 to 18 carbons, wherein in the alkyl, alkoxy and alkenyl at least one carbon atom may be replaced with O, N, S, or combinations thereof; or wherein the alkyl, alkoxy or alkenyl may be substituted with at least one acid selected from carboxylic acid, phosphonic acid, and sulphonic acid, an amino acid moiety, a compound of formula I or formula II, and a straight or branched chain alkylpolyamine, wherein one or more of the carbons in the alkylpolyamine may be replaced by a heteroatom selected from N, O or S; or wherein R' and R'' comprise a saturated or unsaturated cyclic moiety comprising 4 to 6 carbons, wherein one or more of the carbons in the cyclic moiety may be replaced by a heteroatom selected from N, O or S; and wherein Y is a sulphur containing moiety selected from cysteamine, cysteine, sulphide, sulphite, bisulphite and thiosulphate, –S=C=N-, or -N=C=S, alkyl having 1 to 18 carbons, alkoxy having 1 to 18 carbons, alkenyl having 2 to 18 carbons, wherein in the alkyl, alkoxy and alkenyl at least one carbon atom may be replaced with O, N, S, or combinations thereof, or a phenolic moiety which may be substituted at one or more sites with –OH or (CH2)xOH where x may be 1 – 5; to methods of manufacture, intermediates, and uses thereof; and a textile product, sanitary product and a flame retardant textile comprising said triazine compound.

    不織布、不織布製造方法
    9.
    发明申请
    不織布、不織布製造方法 审中-公开

    公开(公告)号：WO2021172025A1

    公开(公告)日：2021-09-02

    申请号：PCT/JP2021/005054

    申请日：2021-02-10

    Applicant: 富士フイルム株式会社

    Inventor： 梅森　謙一 ,  吉田　俊一

    IPC: D04H1/4258 ,  D04H1/728 ,  D01D5/04 ,  D01F2/00

    Abstract: 線径が細く、孔径分布の相対標準偏差が小さく、孔径の大きな不織布、及び、このような不織布を製造可能な不織布製造方法を提供する。　不織布製造設備（２０）は、ファイバ集合体製造工程（２１）、加熱延伸工程（２２）を備える。ファイバ集合体製造工程（２１）は、電界紡糸法を用いて形成したファイバ（１１）を捕集して、ファイバ集合体（６０）を形成する。加熱延伸工程（２２）は、ファイバ集合体（６０）をファイバの融点以上に加熱した状態で延伸して不織布（１０）を形成する。形成された不織布（１０）は、平均孔径が１５μｍ以上、孔径分布の相対標準偏差が０．１以下、ファイバの平均線径が３μｍ以下である。

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