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    Spinnable solutions of acrylonitrile polymers
    1.
    发明授权
    Spinnable solutions of acrylonitrile polymers 失效
    丙烯腈聚合物的可旋转溶液

    公开(公告)号：US3511800A

    公开(公告)日：1970-05-12

    申请号：US3511800D

    申请日：1966-11-01

    Applicant: BAYER AG

    Inventor： SZITA JENO ,  UNGER OTTO ,  MARZOLPH HERBERT ,  NISCHK GUNTHER

    IPC: C08F20/44 ,  C08F3/76 ,  C08F45/44 ,  C08F45/46

    CPC classification number: C08F20/44 ,  C08F2/36

    Abstract: Spinnable solutions of acrylonitrile polymers are prepared by polymerizing a monomeric material containing 50-100% by weight of acrylonitrile and up to 50% by weight of one or more copolymerisable compounds in an organic solvent for the polymer and in the presence of a catalyst mixture containing (a) a sulphinic acid amide and (b) an organic or inorganic acid and/or an organic peroxy compound. (The term "organic acid" is used herein to include both carboxylic and sulphonic acids and, also, aromatic disulphonimides of the formula R-SO2-NH-SO2-R1 in which R and R1 each represent an aromatic radical.) Suitable comonomers include methacrylonitrile, acrylic and methacrylic esters and amides, vinyl esters, styrene and its derivatives, and vinyl and vinylidene chloride, as well as dye-receptive monomers such as styrene sulphonic acid, methacrylamidobenzene-benzene -disulphimide and vinyl pyridine. The acid comonomers may also serve as the acid component of the catalyst system. Solvents specified are dimethyl formamide, dimethyl acetamide and dimethylsulphoxide. Many examples of the sulphinic amide and acid catalyst components are listed; suitable organic peroxy compounds include hydroperoxides, keto-peroxides, acyl peroxides and peresters. Accelerators such as taurine, N-methyltaurine, sulphanilic acid or N-methyl sulphanilic acid may also be present; so too may small quantities of water. The monomers can contain stabilizers such as thiosemicarbazide, ammonia, hydroquinone and its derivatives. When the desired conversion has been reached, polymerization can be stopped by the addition of a known inhibitor and/or a concentrated acid. Filaments and fibres spun from the polymer solutions have a high degree of whiteness.

    N'-substituted n-(amidosulfonyl)-sulfonic acid amides
    2.
    发明授权
    N'-substituted n-(amidosulfonyl)-sulfonic acid amides 失效
    N-取代的N-（氨基磺酰基）磺酰氨基

    公开(公告)号：US3483208A

    公开(公告)日：1969-12-09

    申请号：US3483208D

    申请日：1967-04-04

    Applicant: BAYER AG

    Inventor： BAHR ULRICH ,  SULING CARLHANS ,  NISCHK GUNTHER ,  SZITA JENO

    IPC: C08F20/44 ,  C08F220/44 ,  C07C143/82 ,  C07D31/48

    CPC classification number: C08F220/44 ,  C08F2/36 ,  C08F20/44

    Abstract: 1,142,187. N - Sulphamoylsulphonamides. FARBENFABRIKEN BAYER A.G. 11 April, 1967 [14 April, 1966; 28 April, 1966], No. 16579/67. Heading C2C. [Also in Division C3] Novel N 1 -substituted N-(sulphamoyl)-sulphonamides of the formula RSO 2 NHSO 2 NR 1 R 2 in which R is alkyl or aryl which may be substituted with one or more groups which are inert under the reaction conditions and R 1 and R 2 are C 1-6 alkyl or together with the adjacent nitrogen atom form a heterocyclic ring may be prepared (a) by reacting an alkyl metal derivative of a sulphonamide of the formula RSO 2 NHM in which M is an alkali metal atom with a sulphamoyl halide of the formula XSO 2 NR 1 R 2 in which X is a halogen atom at 70-150‹ C. in an inert organic anhydrous solvent in the presence of a base or (b) by reacting an alkali metal derivative of a N-substituted sulphamide of the formula R 1 R 2 NSO 2 NHM with a sulphonyl chloride of the formula RSO 2 X at 70-150‹ C. in an inert anhydrous organic solvent in the presence of a base. Suitable bases include alkali metal carbonates and tertiary amines.

    Production of acrylonitrile polymers
    3.
    发明授权
    Production of acrylonitrile polymers 失效
    丙烯腈聚合物的生产

    公开(公告)号：US3453249A

    公开(公告)日：1969-07-01

    申请号：US3453249D

    申请日：1966-06-09

    Applicant: BAYER AG

    Inventor： SZITA JENO ,  MARZOLPH HERBERT ,  UNGER OTTO

    IPC: C08F20/44 ,  C08F1/62 ,  C08F1/08

    CPC classification number: C08F20/44 ,  C08F2/36

    Abstract: Spinnable solutions of acrylonitrile polymers are prepared by polymerizing at 30-60 DEG C. a monomeric material containing 80-100% by weight of acrylonitrile and up to 20% by weight of a comonomer in an organic solvent for the polymer in the presence of a Redox catalyst system consisting of an organic peroxide and a sulphone of the formula wherein R represents a monovalent aliphatic or aromatic hydrocarbon radical which may be substituted; R1 and R11 which may be the same or different represent hydrogen or alkyl; and either n is 1 and X is -OH, or n is 2 and X is =NR111, R111 being alkyl, hydroxyalkyl or aryl. The comonomer may be an acrylic ester, e.g. methyl acrylate, vinyl ester, or styrene derivative, or a dyeable component such as sulphostyrene, N-(p-methacryloylamino-phenyl sulphonyl)-benzenesulphonamide or vinyl pyridine. The monomers may contain stabilizers such as thiosemicarbazide, ammonia, hydroquinone and derivatives. Suitable peroxides include cumene and t-butyl hydroperoxides, methyl ethyl ketone, cyclohexanone and lauroyl peroxides and mono-t-butyl peroxymaleate. Organic solvents specified are dimethylformamide, dimethylacetamide, dimethyl sulphoxide, g -butyrolactone and ethylene glycol carbonate. A mineral acid, e.g. hydrochloric, phosphoric or sulphuric acid, may be present to inhibit discoloration or stabilize the solution; and oxalic acid may be present if the solution contains iron impurities. At the end of polymerization, an inhibitor may be added to prevent undesired polymerization of any unreacted monomer or to stop the reaction at incomplete conversion. The solutions can be spun to form filaments having good whiteness and thermostability properties.

    Acrylonitrile copolymers containing sulfonic acid groups
    8.
    发明授权
    Acrylonitrile copolymers containing sulfonic acid groups 失效
    含有亚磺酸的丙烯酸共聚物

    公开(公告)号：US3666722A

    公开(公告)日：1972-05-30

    申请号：US3666722D

    申请日：1971-03-25

    Applicant: BAYER AG

    Inventor： SZITA JENO ,  BAHR ULRICH ,  MARZOLPH HERBERT ,  NISCHK GUNTHER

    IPC: C08F220/44 ,  C08F19/00

    CPC classification number: C08F220/44

    Abstract: This invention relates to acrylonitrile copolymers containing at least 50 percent by weight of acrylonitrile and up to 10 percent by weight of an ethylenically insaturated sulfonic acid compound of the formula WHEREIN R represents a hydrogen atom or a methyl group, A represents an alkylene radical and X represents hydrogen, ammonium, an alkali or an organic ammonium cation, the balance being one or more additional copolymerizable monomers, and to a process for their production by copolymerizing said monomers in an aqueous medium with a redox catalyst system or in an organic polar solvent with a radical catalyst. The copolymers show a high degree of whiteness, outstanding thermal stability and excellent textile properties together with a high affinity for basic dyes.

    Abstract translation: 本发明涉及丙烯腈共聚物，其含有至少50重量％的丙烯腈和至多10重量％的下式的烯键式不饱和磺酸化合物，其中：R表示氢原子或甲基，A表示亚烷基，X表示 表示氢，铵，碱或有机铵阳离子，余量为一种或多种另外的可共聚单体，以及通过在水介质中将所述单体与氧化还原催化剂体系或有机极性溶剂共聚而制备的方法， 一种自由基催化剂。

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