Process for making cellulose fibre, filaments or films
    3.
    发明申请
    Process for making cellulose fibre, filaments or films 有权
    制造纤维素纤维,长丝或薄膜的方法

    公开(公告)号:US20090127750A1

    公开(公告)日:2009-05-21

    申请号:US12266275

    申请日:2008-11-06

    CPC classification number: D01F2/00

    Abstract: An improved process for the preparation of a cellulose solution for spinning of fibres, filaments or films therefrom comprising the steps of: a) activating cellulose in a mixture containing said cellulose, tertiary amine oxide solvent and water for a period sufficient to allow a swelling of the cellulose by introduction therein of water present in said mixtures, the temperature of said activation step and concentration of solvent being such that the solvent is not converted into its monohydrate state during the step of activation; b) the cellulose mixture being subjected to the steps of dissolution of cellulose in the solvent by heating for removal of water so as to convert the solvent into at least its monohydrate form so as to cause a dissolution.

    Abstract translation: 一种用于制备用于纺丝纤维,长丝或薄膜的纤维素溶液的改进方法,包括以下步骤:a)在含有所述纤维素,叔胺氧化物溶剂和水的混合物中活化纤维素足够长时间以使其膨胀 纤维素通过在其中引入存在于所述混合物中的水,所述活化步骤的温度和溶剂的浓度使得在活化步骤期间溶剂不转化为其一水合物状态; b)纤维素混合物经过以下步骤:通过加热除去水溶解纤维素溶解在溶剂中,以将溶剂转化为至少一水合物形式以使其溶解。

    Process for the preparation of a cellulose solution for spinning of fibres, filaments or films therefrom
    4.
    发明授权
    Process for the preparation of a cellulose solution for spinning of fibres, filaments or films therefrom 有权
    制备用于纺丝纤维,长丝或薄膜的纤维素溶液的方法

    公开(公告)号:US07459015B2

    公开(公告)日:2008-12-02

    申请号:US10826486

    申请日:2004-04-16

    CPC classification number: D01F2/00

    Abstract: An improved process for the preparation of a cellulose solution for spinning of fibers, filaments or films therefrom comprising the steps of: a) activating cellulose in a mixture containing said cellulose, tertiary amine oxide solvent and, water for a period sufficient to allow a swelling of the cellulose by introduction therein of water present in said mixtures, the temperature of said activation step and concentration of solvent being such that the solvent is not converted into its monohydrate state during the step of activation; b) the cellulose, using a activator such as a glycol or a glyme, mixture being subjected to the steps of dissolution of cellulose in the solvent by heating for removal of water so as to convert the solvent into at least its monohydrate form so as to cause a dissolution.

    Abstract translation: 一种制备用于纺丝纤维,长丝或薄膜的纤维素溶液的改进方法,包括以下步骤:a)在含有所述纤维素,叔胺氧化物溶剂和水的混合物中活化纤维素足够长时间的溶胀 的纤维素通过在其中引入存在于所述混合物中的水,所述活化步骤的温度和溶剂的浓度使得在活化步骤期间溶剂不会转化为其一水合物状态; b)使用活化剂如二醇或甘醇二甲醚的纤维素混合物进行通过加热除去水来溶解纤维素溶解在溶剂中的步骤,以将溶剂转化为至少一水合物形式,以便 导致解散。

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