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    The production of azathiacyclohexane-4,4-dioxide and derivatives thereof
    32.
    发明专利
    The production of azathiacyclohexane-4,4-dioxide and derivatives thereof 未知

    公开(公告)号：GB874519A

    公开(公告)日：1961-08-10

    申请号：GB2480059

    申请日：1959-07-20

    Applicant: BASF AG

    Inventor： GEHM ROBERT ,  DEHNERT JOHANNES

    IPC: C07D295/023

    Abstract: 1-Aza-4-thiacyclohexane-4,4-dioxide or a derivative thereof substituted on nitrogen and/or one or more carbon atoms is prepared by reacting at elevated temperature bis (b -hydroxyethyl)-sulphone or oxathiacyclohexane-4,4-dioxide, or one of their derivatives substituted on carbon, with ammonia or an aliphatic, cycloaliphatic or araliphatic amine containing at least one primary amino group or with hydrazine or a hydrazine substituted on one of the NH2-groups only, preferably in water or an organic solvent. Temperatures of 100-300 DEG C. are mentioned and elevated pressures, e.g. autogenic, are preferred. The sulphone starting material may be used without isolation after its preparation by oxidising the corresponding thioether. The amine starting material may be substituted, e.g. by further amino groups, ester or nitrile groups, or the carbon chain may be interrupted by hetero atoms, e.g. N or O. Certain azathiacyclohexane dioxides are claimed per se, viz: (i) compounds of formula where R1 is hydrogen or alkyl, R2 is hydrogen or C1-4 alkyl, R3 is hydrogen, C1-4 alkyl, phenyl, methylphenyl or 2-methoxy-5-methylphenyl, and n is 2 to 6 inclusive; (ii) N-amino-azathia-cyclohexane-4,4-dioxide and (iii) 2,6-dimethyl-azathia-cyclohexane-4,4-dioxide. Compounds prepared in examples but not claimed per se are: azathiacyclohexane-4,4-dioxide, N-methyl-, N-hydroxyethyl-, N-benzyl-, N-2-ethylhexyl, N-anilino- and N-cyclohexyl-azathiacyclohexane -4,4- dioxides, and hexamethylene-bis(azathiacyclohexane-4, 4-dioxide).

    PROCESS FOR THE PREPARATION OF POLYURETHANE- POLYISOCYANURATE FOAMS
    37.
    发明专利
    PROCESS FOR THE PREPARATION OF POLYURETHANE- POLYISOCYANURATE FOAMS 未知

    公开(公告)号：CA1185749A

    公开(公告)日：1985-04-16

    申请号：CA418407

    申请日：1982-12-22

    Applicant: BASF AG

    Inventor： HORACEK HEINRICH ,  GEHM ROBERT ,  FRANK WOLFRAM ,  MARX MATTHIAS

    IPC: C08G18/18 ,  C08G18/14

    Abstract: PROCESS FOR THE PREPARATION OF POLYURETHANE-POLYISOCYANURATE FOAMS The invention describes a process for harmonizing the reaction rates for the formation of urethane and isocyanurate groups during the preparation of polyurethanepolyisocyanurate foams by reacting organic polyisocyanates with polyols in the presence of blowing agents and salts of amines having the formula as catalysts, wherein R stands for an hydrogen atom or a straight chained or branched alkyl radical with 1 to 19 carbon atoms, and n and m are equal or different whole numbers from 2 to 10.

    Production of highly elastic mouldings of polyurethanes
    40.
    发明专利
    Production of highly elastic mouldings of polyurethanes 未知

    公开(公告)号：GB1102352A

    公开(公告)日：1968-02-07

    申请号：GB2386865

    申请日：1965-06-04

    Applicant: BASF AG

    Inventor： GEHM ROBERT ,  KUNDE JOACHIM ,  MERTES FRIEDRICH

    IPC: C08G18/10

    Abstract: Moulded polyurethane elastomers are prepared by reacting in solution an isocyanate modified polyhydroxy compound of MW 1000-6000 and containing terminal -NCO groups with a chain lengthening agent of Formula (I) in which R, R1 and R2 can each be a hydrogen atom or an alkyl, cycloalkyl, aryl or aralkyl radical having up to 8C, R3 is a divalent linear or branched aliphatic, aromatic or araliphatic hydrocarbon radical having up to 10C in a continuous chain which may be interrupted by hetero atoms; R4 is the radical where A is a hydrogen atom, an alkyl, cycloalkyl, aryl or aralkyl radical and B is an organic radical containing at least one sulphone group and which may be connected with A, and n is 0 or 1; and shaping whilst removing the solvent e.g. by casting on to a plate. The polyhydroxy compound may be a polyether, polythioether, polyesteramide or polyacetal. The isocyanate may be aliphatic, cycloaliphatic or aromatic. The solvent may be a polar organic solvent e.g. dimethyformamide, dimethyl acetamide, tetramethyl urea or tetramethylene sulphone.ALSO:In Example (1) 2,4-dihydrazino-6-[N-ethyl-N-thiacyclopentyl - 1,1 - dioxide - amino - s - triazine] is prepared by reacting cyanuryl chloride with ethylene thiacyclopentane 1,1-dioxide amine and adding hydrazine hydrate. The product is recrystallized from a 1:1 mixture of dimethyl formamide and water. In Example (2) 2,4 - dihydrazino - 6 - [tetrahydro - 1,4 - thiazino-1,1 - dioxide] - s - triazine is prepared by reacting cyanuryl chloride with tetrahydro-1,4-thiazine -1,1-dioxide and adding hydrazine, followed by recrystallization from dimethyl formamide/water mixture.

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