Polymers based on conjugated dienes
    11.
    发明授权
    Polymers based on conjugated dienes 失效
    基于共轭二烯的聚合物

    公开(公告)号:US5614595A

    公开(公告)日:1997-03-25

    申请号:US543318

    申请日:1995-10-16

    Abstract: Polymers Ia and Ib carrying functional groups and obtainable byA) 1. hydrogenation of the olefinic double bonds of a polymer IIa comprisinga) from 20 to 100% by weight of a conjugated diene,b) from 0 to 80% by weight of an aromatic vinyl compound, andc) from 0 to 20% by weight of further comonomers,to give the hydrogenated polymer IIb, 2. metallation of IIb using an organoalkali metal compound to give IIc, 3. reaction of IIc with a diaziridine III to give IId, and 4. hydrolysis or alcoholysis of IId to give Ia, or byB) 1. partial hydrogenation of IIa to give a partially hydrogenated polymer IIb', 2. epoxidation of the double bonds of IIb' to give IIe, and 3. reaction of IIe with a compound IV carrying functional groups, to give Ib,are suitable as viscosity index improvers for engine oils.

    Abstract translation: 聚合物Ia和Ib携带官能团,可通过A)获得聚合物IIa的烯烃双键,其包含a)20至100重量%的共轭二烯,b)0至80重量%的 芳族乙烯基化合物,和c)0-20重量%的另外的共聚单体,得到氢化聚合物IIb,2.使用有机碱金属化合物对IIb进行金属化,得到IIc,3.IIc与二氮丙啶III的反应,得到 IId和4. IId的水解或醇解以得到Ia,或通过B)1. IIa部分氢化得到部分氢化的聚合物IIb',2.IIb'的双键的环氧化得到IIe,和3。 IIe与携带官能团的化合物IV反应得到Ib,适用于发动机油的粘度指数改进剂。

    Circuit arrangement for the digital correction of time base errors of a
television signal using variable addressing of a memory
    15.
    发明授权
    Circuit arrangement for the digital correction of time base errors of a television signal using variable addressing of a memory 失效
    使用存储器的可变寻址的电视信号的时基误差的数字校正的电路装置

    公开(公告)号:US4215376A

    公开(公告)日:1980-07-29

    申请号:US873733

    申请日:1978-01-30

    Applicant: Helmut Mach

    Inventor: Helmut Mach

    CPC classification number: H04N5/956

    Abstract: In a circuit arrangement for the digital correction of time base errors in a television signal this signal is converted into digital television signals with a certain clock frequency in an analog/digital converter, which signals are consecutively written into the individual addresses of a random access memory (RAM) with the same clock frequency and in the meantime are read from specific addresses of the memory with the same frequency. Which addresses are read depends on the magnitude and sign of the time base error, which is determined in a detection circuit from a comparison signal of the television signal and is converted into digital time base error signals which are quantized with a given time interval, which error signals are applied to an address signal which depending on the number of time intervals, which are defined by the clock frequency, in the time base error signals relative to the number of addresses of the memory controls the selection of the addresses to be read.

    Abstract translation: 在用于数字校正电视信号中的时基误差的电路装置中,该信号在模拟/数字转换器中被转换为具有某个时钟频率的数字电视信号,这些信号被连续地写入随机存取存储器的各个地址 (RAM)具有相同的时钟频率,同时从具有相同频率的存储器的特定地址读取。 读取哪个地址取决于时间误差的大小和符号,该时基误差是根据电视信号的比较信号在检测电路中确定的,并被转换成以给定的时间间隔量化的数字时基误差信号, 误差信号被施加到地址信号,该地址信号取决于由时钟频率定义的时间间隔的数量,在时基误差信号中相对于存储器的地址数量控制要读取的地址的选择。

    PREPARATION OF DERIVATIVES OF ISOBUTENE COPOLYMERS
    16.
    发明申请
    PREPARATION OF DERIVATIVES OF ISOBUTENE COPOLYMERS 有权
    ISOBUTENE共聚物衍生物的制备

    公开(公告)号:US20120165473A1

    公开(公告)日:2012-06-28

    申请号:US13305132

    申请日:2011-11-28

    Abstract: A process for producing an isobutene copolymer derivative by: (I) free-radically copolymerizing (a) 10-90 mol % of a monoethylenically unsaturated C4- to C12-dicarboxylic acid, anhydride, or ester, (b) 10-90 mol % of a high-reactivity isobutene polymer having Mn=110-250000 and obtained by polymerizing isobutene in the presence of an iron-halide-, aluminum trihalide-, or alkylaluminum halide-donor complex, each donor being an ether or carboxylic ester function, or in the presence of a Lewis acid complex containing an organic sulfonic acid, and (c) 0-50 mol % of a monoethylenically unsaturated compound copolymerizable with (a) and (b), to obtain an intermediate isobutene copolymer; and (II) reacting the carboxylic acid functions in the intermediate with at least one of ammonia, an amine, and an alcohol, to form a moiety containing at least one of a hydroxyl, carboxylic ester, amino, quaternized amino, amido, and imido group.

    Abstract translation: 异丁烯共聚物衍生物的制备方法:(I)10-90摩尔%的单烯属不饱和C4-至C12-二羧酸,酸酐或酯的自由基共聚合,(b)10-90摩尔% 的Mn = 110-250000的高反应异丁烯聚合物,并且通过在卤化铁,三卤化铝或卤化烷基铝卤化物供体络合物的存在下聚合异丁烯获得,每个供体是醚或羧酸酯官能团,或 在含有有机磺酸的路易斯酸络合物的存在下,和(c)0-50mol%可与(a)和(b)共聚的单烯键式不饱和化合物,得到中间体异丁烯共聚物; 和(II)使中间体中的羧酸官能团与氨,胺和醇中的至少一种反应,以形成含有羟基,羧酸酯,氨基,季铵化氨基,酰胺基和亚氨基中的至少一个的部分 组。

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