Heat-resistant,linear,aromatic copolymers and process for their production
    1.
    发明授权
    Heat-resistant,linear,aromatic copolymers and process for their production 失效
    耐热,线性,芳族共聚物及其生产工艺

    公开(公告)号:US3594446A

    公开(公告)日:1971-07-20

    申请号:US3594446D

    申请日:1969-02-26

    Applicant: INVENTA AG

    CPC classification number: C08G75/23 C08G75/0245 C08G75/12 C08L2205/05

    Abstract: HEAT-RESISTANT, LINEAR, AROMATIC COPOLYMERS CONTAINING THIOETHER GROUPS AND ETHER GROUPS AS POLYMER FORMING CONNECTING LINKS, PRODUCED BY REACTING (A) 0.9-1.1 MOLE OF A MIXTURE OF SODIUM OR POTASSIUM SALTS OF AT LEAST ONE AROMATIC DITHIOL AND ONE AROMATIC DIPHENOL OF THE FORMULAE: 4-(4-(HS-)PHENYL)-X-)THIOPHENOL AND WHERE X IS -CH2-; -C(-CH3)2-; -O-; -S-; -S(=O)-; -S(=O)2-; OR -C(=O)4-(4-(HO-)PHENYL)-X-)PHENOL WITH (B) 1 MOLE OF AN AROMATIC DIHALIDE OF THE FORMULA

    1-((4-(HAL-)PHENYL)-Y-),4-HAL-BENZENE

    WHERE Y IS SULFONYL, DISULFONYL, KETO, DIKETO, AZO, VINYLENE, ALKYL PHOSPHINE OR PERFLUOROETHYL AND HAL STANDS FOR HALOGEN. THE REACTION IS CONDUCTED AT A HIGH TEMPERATURE, WITH OXYGEN EXCLUDED, IN A STRONGLY POLAR, APROTIC SOLVENT.

    Method for producing heat-resistant linear thermoplastic aromatic polythioethers
    2.
    发明授权
    Method for producing heat-resistant linear thermoplastic aromatic polythioethers 失效
    生产耐热线性热塑性芳族聚氧乙烯醚的方法

    公开(公告)号:US3547887A

    公开(公告)日:1970-12-15

    申请号:US3547887D

    申请日:1968-06-05

    Applicant: INVENTA AG

    CPC classification number: C08G75/025 C08G75/04

    Abstract: 1,160,666. Polythioethers. INVENTA A.G. FUR FORSCHUNG UND PATENTVERWERTUNG, ZURICH. 4 June, 1968 [9 June, 1967], No. 26484/68. Heading C3R. Polythioethers containing units of formula where R and R 1 are aromatic radicals, are obtained by reacting an alkali metal or alkaline earth metal salt of an aromatic dithiol with an aromatic dihalogen compound having at least three carbon atoms between the halogen atoms, the aromatic radical being free from electronattracting groups in o- or p-positions with respect to the halogen atoms, in a polar solvent at elevated temperature. In examples, polymers are obtained by heating potassium, lithium and sodium salts of diphenyl ether 4,41- dithiol with p-dibromo-benzene, p-dichlorobenzene and 4,4 1 -dibromodiphenyl ether, in N-methylpyrrolidone. Other salts mentioned are those of diphenyl sulphide dithiol, diphenylmethane dithiol and 4,4 1 -dimercaptodiphenyl, and other dihalogen compounds are 1,3- dibromo - benzene, 1,4 - dichloronaphthalene, 4 - chloro - 4 1 - bromodiphenyl, 4,41 - diiododiphenyl - methane and 4,41 - dichlorodiphenyl sulphide. A catalyst, e.g. copper, copper oxides, copper salts, N-bromosuccinimide or N-bromo-phthalimide, may be present in the reaction.

    Process for preparing n-substituted lactams
    3.
    发明授权
    Process for preparing n-substituted lactams 失效
    制备n-取代内酰胺的方法

    公开(公告)号:US3865814A

    公开(公告)日:1975-02-11

    申请号:US38246173

    申请日:1973-07-25

    Applicant: INVENTA AG

    CPC classification number: C07D207/267 C07D227/087

    Abstract: A process for the preparation of N-substituted lactams of the formula

    WHEREIN A is a substituted or unsubstituted aliphatic hydrocarbon chain having 3 to 11 carbon atoms, said substituents comprising one or more alkyl groups each having 1 to 4 carbon atoms; and R is hydrogen or a hydrocarbon radical having 1 to 17 carbon atoms, comprising reacting at least one starting lactam of the formula

    WITH AN ORGANIC HALOGEN COMPOUND OF THE FORMULA X - CH2-R wherein X is chlorine, bromine or iodine, in the presence of an alkali metal hydroxide in solid form or in at least 50% aqueous solution at a reaction temperature of from 20*C to 120*C.

    Abstract translation: 制备式(III)的N-取代的内酰胺的方法是取代或未取代的具有3至11个碳原子的脂族烃链,所述取代基包括一个或多个各自具有1至4个碳原子的烷基; 并且R是氢或具有1至17个碳原子的烃基,其包括使式的至少一种起始内酰胺与式X-CH 2 -R的有机卤素化合物反应,其中X为氯,溴或碘, 的固体形式的碱金属氢氧化物或在20℃至120℃的反应温度下的至少50%的水溶液中。

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