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    Method for the production of aldehydic acids
    1.
    发明授权
    Method for the production of aldehydic acids 失效
    生产乙酸的方法

    公开(公告)号：US3856833A

    公开(公告)日：1974-12-24

    申请号：US22726872

    申请日：1972-02-17

    Applicant: SNIA VISCOSA

    Inventor： SICLARI F ,  ROSSI P

    IPC: C07C45/40 ,  C07C51/34 ,  C07C227/08 ,  C07D323/02 ,  C08H17/36

    CPC classification number: C07D323/02 ,  C07C45/40 ,  C07C51/34 ,  C07C227/08 ,  C07C59/153 ,  C07C59/147

    Abstract: A method is disclosed which permits obtaining bifunctional chemical compounds, such as acidic aldehydes from ozonides of olefins, the improvement consisting in that the peroxidic derivatives of the ozonides in question are subjected to transposition in a polar solvent and in the presence of a catalyst. The catalyst is preferably a basic substance such as an alkali metal salt or an alkali metal alcoholate, or also an organic base. The catalytic system may also comprise an organic acid anhydride, provided that it is soluble in the polar solvent aforesaid but cannot react therewith.

    Abstract translation: 公开了一种方法，其可以获得双官能化学化合物，例如来自烯烃的臭氧化物的酸性醛，改进之处在于所述臭氧化物的过氧化物衍生物在极性溶剂中和在催化剂存在下进行转置。 催化剂优选为碱金属盐如碱金属盐或碱金属醇盐，也可为有机碱。 催化体系还可以包含有机酸酐，条件是其可溶于上述极性溶剂，但不能与其反应。

    3.
    发明专利
    未知

    公开(公告)号：BR7308425D0

    公开(公告)日：1974-09-10

    申请号：BR842573

    申请日：1973-10-26

    Applicant: SNIA VISCOSA

    Inventor： ROSSI P ,  SICLARI F

    IPC: C08L1/00 ,  C07F9/54 ,  D01F2/08 ,  D01F2/10 ,  D06M13/30 ,  D06M13/40 ,  D01F3/12

    Abstract: A method is disclosed for producing cellulosic and/or polynosic fibres having flame-resisting properties, the improvement consisting in the fact that a composite viscose is spun in an acidic bath, said composite viscose being obtained by the association in an aqueous solvent, of cellulose xanthate with a phosphorus and nitrogen compound, dissolved in the same aqueous solvent and capable of being converted, while cellulose is being regenerated in said acidic bath, into a state of substantial insolubility. The phosphorus and nitrogen compound is a compound obtained by reacting a phosphonium derivative with aminoacids and amines and/or ammonia. A preferred compound is tetrakis-hydroxymethylphosphonium chloride. By so doing, an efficient flame-retarding protection is obtained for the fibre without sacrificing the physical properties thereof. Critical quantities, reaction conditions and test results are reported.

    METHOD OF PRODUCING CELLULOSIC FILAMENTS
    5.
    发明专利
    METHOD OF PRODUCING CELLULOSIC FILAMENTS 未知

    公开(公告)号：IN141011B

    公开(公告)日：1977-01-08

    申请号：IN2362CA1973

    申请日：1973-10-24

    Applicant: SNIA VISCOSA

    Inventor： SICLARI F ,  ROSSI P

    IPC: C08L1/00 ,  C07F9/54 ,  D01F2/08 ,  D01F2/10 ,  D01F3/12

    Abstract: A method is disclosed for producing cellulosic and/or polynosic fibres having flame-resisting properties, the improvement consisting in the fact that a composite viscose is spun in an acidic bath, said composite viscose being obtained by the association in an aqueous solvent, of cellulose xanthate with a phosphorus and nitrogen compound, dissolved in the same aqueous solvent and capable of being converted, while cellulose is being regenerated in said acidic bath, into a state of substantial insolubility. The phosphorus and nitrogen compound is a compound obtained by reacting a phosphonium derivative with aminoacids and amines and/or ammonia. A preferred compound is tetrakis-hydroxymethylphosphonium chloride. By so doing, an efficient flame-retarding protection is obtained for the fibre without sacrificing the physical properties thereof. Critical quantities, reaction conditions and test results are reported.

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