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    Tape recorder and magnetic tape cassette with movable tensioning and brake means
    1.
    发明授权
    Tape recorder and magnetic tape cassette with movable tensioning and brake means 失效
    带状记录仪和磁带盒可移动张力和制动器

    公开(公告)号：US3800322A

    公开(公告)日：1974-03-26

    申请号：US17447171

    申请日：1971-08-24

    Applicant: BASF AG

    Inventor： SCHOETTLE K ,  HOFFMANN W ,  HACK J ,  LOEWENBERG G

    IPC: G11B5/54 ,  G11B23/087 ,  G11B23/04 ,  G11B19/22

    CPC classification number: G11B5/54 ,  G11B23/087

    Abstract: The invention relates to a magnetic tape cassette and a tape recorder for use with such a cassette. More specifically, the invention relates to the provision of movable means within the cassette, which means - in a first position - hold the magnetic tape taut and prevent movement of the reels in the cassette and in a second position - release the magnetic tape and the reels, which may then be rotated by the tape recorder, the tape being guided only by means attached to the recorder. Magnetic head positioning means provided on the recorder are adapted to adjust the position of magnetic heads, which are rigidly mounted on a head plate which is movable relatively to the tape, to the desired position for recording and reproduction.

    Abstract translation: 本发明涉及一种用于这种盒式磁带的磁带盒和磁带记录器。 更具体地说，本发明涉及在盒内提供可移动装置，这意味着在第一位置 - 保持磁带的张紧并防止卷盘在盒中的移动，并且 - 在第二位置 - 释放磁带和 卷轴可以由磁带录音机旋转，磁带只能通过连接在记录器上的装置引导。 设置在记录器上的磁头定位装置适于调节刚性地安装在可相对于磁带移动的磁头板上的磁头的位置到用于记录和再现的期望位置。

    Process for the continuous production of pseudoionones
    2.
    发明授权
    Process for the continuous production of pseudoionones 失效
    连续生产PSEUDOONONES的工艺

    公开(公告)号：US3745189A

    公开(公告)日：1973-07-10

    申请号：US3745189D

    申请日：1969-09-15

    Applicant: BASF AG

    Inventor： HOFFMANN W ,  PASEDACH H ,  FISCHER R

    IPC: C07C45/68 ,  C07C49/20 ,  C07C49/24

    CPC classification number: C07C45/68 ,  C07C49/203

    Abstract: PRODUCING OF PSEUDOIONONES HAVING THE GENERAL FORMULA: CH3-C(CH3)=CR2-A;

    CH2=C(CH3)-CHR2-A

    AND R3OC(CH3)2-CHR2-A BY REACTION OF DEHYDROLINALOOLS CH3-C(CH3)=CR2-B;

    CH=C(CH3)-CHR2-B

    AND R3OC(CH3)2-CHR2-B WITH AN ACETOACETIC ESTER CH3-CO-CHR1-COOR3 (WITH A DENOTING -CH2-CH2-C(CH3)=CH-CH=CHR1-CO-CH3; B DENOTING -CH2-CH2-C(CH3)(OH)-C=CH; R1 AND R2 DENOTING H OR CH3; AND R3 DENOTING AN ALKYL GROUP) BY CONTINUOUS REACTION IN AT LEAST TWO VESSELS ARRANGED IN SERIES THE RESIDENCE TIMES IN THE VESSELS BEING ABOUT EQUAL AND THE REACTION TEMPERATURES RISING IN EACH CASE BY FROM 1* TO 50*C. FROM VESSEL TO VESSEL, THE TEMPERATURE IN THE FIRST VESSEL BEING FROM 160* TO 190*C. THE PRODUCTS ARE VALUABLE PERFUMES AND INTERMEDIATES FOR THE SYNTHESIS OF COMPOUNDS OF THE VITAMIN-A AND CAROTENOID SERIES.

    Manufacture of beta-ionones
    3.
    发明授权
    Manufacture of beta-ionones 失效
    BETA-IONONES的制造

    公开(公告)号：US3845135A

    公开(公告)日：1974-10-29

    申请号：US14134871

    申请日：1971-05-07

    Applicant: BASF AG

    Inventor： HOFFMANN W ,  RISCHER R

    IPC: C07C20060101 ,  C07C45/00 ,  C07C403/00 ,  C07C49/48

    CPC classification number: C07C403/16 ,  C07C2601/16

    Abstract: 1. A CONTINUOUS PROCESS FOR THE MANUFACTURE OF B-IONONE OF FORMULA I
    AND R1, AND R2 AND R3 HAVE THE MEANINGS STATED ABOVE, ARE CYCLIZED AND CYCLIZATION IS CARRIED OUT IN THE TEMPERATURE RANGE-30* TO +20* C. AND IN THE PRESENCE OF MIXTURES OF HYDOCARBONS WHICH ARE LIQUIDS UNDER THE CONDITIONS OF THE REACTION AND WHICH BOIL AT TEMPERATURES BELOW 200* C. AT ATMOSPHERIC PRESSURE SELECTED FROM THE GROUP CONSISTING OF METHANE, ETHANE, PROPANE, BUTANE, PENTANE, HEXANE, CYCLOHEXANE, BENZENE AND XYLENE AND LOWER ALIPHATIC ALCOHOLS SELECTED FROM THE GROUP CONSISTING OF ALKANOLS OF 1 TO 6 CARBON ATOMS, ETHYLENE GLYCOL AND PROPYLENE GLYCOL, THE MOLAR RATIO OFF PSUEDO-IONONE TO HYDROCARBON BEING ABOUT 1:1-17, THAT OFF PSEUDO-IONONE TO ALCOHOL BEING 1:0.5-2 AND THAT OF PSEUDO-IONONE TO SULFURIC ACID BEING 1:7-12, THE SULFURIC ACID USED HAVING A STRENGTH OF FROM 90 TO 98%.
    -CH(-R1)=C(-CH3)2 OR

    1-R1,2,2,4-TRI(H3C-),3-(R3-CH2-CO-C(-R2)=CH-)-

    CYCLOHEX-3-ENE

    IN WHICH R1, R2 AND R3 DENOTE HYDROGEN OR METHYL, BY CYCLIZATION OF PSUEDO-IONONES WITH SULFURIC ACID, WHEREIN PSUEDO-IONONES OF FORMULA II

    X-CH2-CH2-C(-CH3)=CH-CH=C(-R2)-CO-CH2-R3

    IN WHICH X DENOTES RADICALS OF THE FORMULAE:

    -CH(-R1)-C(-CH3)=CH2


    -CH(-R1)-C(-CH3)2-O-CH3

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