Process for dissociating polyurethane resins
    1.
    发明授权
    Process for dissociating polyurethane resins 失效
    离聚聚氨酯树脂的工艺

    公开(公告)号:US4160749A

    公开(公告)日:1979-07-10

    申请号:US880536

    申请日:1978-02-23

    摘要: The instant invention is directed to a process for dissociating cellular and non-cellular polyurethane resins into re-usable starting products for the isocyanate polyaddition process, wherein the polyurethane is reacted with associates of lactams and adduct-formers having at least two Zerewitinoff-active hydrogen atoms at from 150.degree. to 250.degree. C., optionally at elevated pressure, the improvement wherein from 35 to 1000 parts, by weight, based on 100 parts, by weight, of the polyurethane, of an associate mixture of:(a) from 4 to 50 parts, by weight, of a lactam or azalactam, based on 100 parts, by weight, of polyurethane; and a mixture of:(b) water and/or a compound having a molecular weight of from 62 to 200 having at least two Zerewitinoff-active hydrogen atoms; and(c) a polyhydroxyl compound having a molecular weight of from 300 to 6000; is used, and the proportion by weight of components (b) to (c) is from 1:10 to 10:1, and wherein said component (a) is used in a quantity such that said 35 to 1000 parts comprises from 4 to 50 parts of component (a).

    摘要翻译: 本发明涉及将细胞和非细胞聚氨酯树脂解离成用于异氰酸酯加聚方法的可再使用的起始产物的方法,其中聚氨酯与具有至少两个Zerewitinoff活性氢的内酰胺和加合物形成剂的缔合物反应 原子在150℃至250℃,任选地在升高的压力下,其改进在35至1000份(重量),基于100份(重量)聚氨酯的下列混合物:

    Process for the production of synthetic plastics comprising urethane
groups and biuret groups
    2.
    发明授权
    Process for the production of synthetic plastics comprising urethane groups and biuret groups 失效
    用于生产包含氨基甲酸酯基和缩二脲基的合成塑料的方法

    公开(公告)号:US3969262A

    公开(公告)日:1976-07-13

    申请号:US501015

    申请日:1974-08-27

    IPC分类号: C08G18/72 C08G18/78

    CPC分类号: C08G18/7831 C08G18/725

    摘要: A process is provided for the production of synthetic polyurethane plastics, particularly foam plastics, containing biuret groups by reacting polyisocyanates, polyhydroxyl and/or polycarboxyl compounds, flame inhibitors and, if desired, blowing agents, emulsifiers, activators and other additives which is characterized by using as the polyisocyanate solutions in monomeric polyisocyanates of from about 1 per cent to 85 per cent of polyisocyanates containing biuret groups and having the formula: ##EQU1## in which R is an aromatic, araliphatic or cycloaliphatic radical which may, if desired, be substituted andn is an integer from 0 to 5, wherein the proportion of biuret-polyisocyanates having more than three isocyanate groups is at least 20 per cent by weight based on the total quantity of biuret-polyisocyanates, and the solutions contain from about 0.03 per cent to about 5 per cent by weight of chemically combined emulsifiers.

    摘要翻译: 提供了一种通过使多异氰酸酯,多羟基和/或多羧基化合物,阻燃剂以及如果需要的话发泡剂,乳化剂,活化剂和其它添加剂反应生成含有缩二脲基团的合成聚氨酯塑料,特别是泡沫塑料的方法。 在约1%至85%的含有缩二脲基团的多异氰酸酯基团的单体多异氰酸酯中使用多异氰酸酯溶液,并具有下列通式:O PARALLEL OCN-RNCNR-NCO || O = C(CO-N)nH || R- NCO H-N-CO)nN || R-NCOR | NCO,其中R是芳族,芳脂族或脂环族基团,如果需要,其可以被取代,并且N是0至5的整数,因为BIURET的比例 具有超过三个异氰酸酯基团的多晶型物质基于生物多核苷酸的总量至少为20个百分点,以及从化学合成重量的约0.03个百分点至约5个百分点的解决方案 INED EMULSIFIERS。

    Urea diisocyanate compositions
    3.
    发明授权
    Urea diisocyanate compositions 失效
    脲二异氰酸酯组合物

    公开(公告)号:US3943158A

    公开(公告)日:1976-03-09

    申请号:US394710

    申请日:1973-09-06

    摘要: The present invention relates to stable solutions of urea diisocyanates in diisocyanates which are free from urea groups which solutions are prepared by a process which comprises reacting in the absence of a solvent at a temperature from about -20.degree.C to about 80.degree.C an organic diisocyanate with a bis-secondary diamine such that the NCO/NH-ratio is from 2.5 : 1 to 20 : 1. The solutions of the invention are well-suited for use as isocyanate component for the preparation of polyurethane resins by the isocyanate polyaddition process.

    摘要翻译: 本发明涉及尿素二异氰酸酯在不含脲基的二异氰酸酯中的稳定溶液,该溶液通过包括在约-20℃至约80℃的温度下在不存在溶剂的情况下反应的方法制备, 二异氰酸酯与二仲二胺反应,使得NCO / NH比为2.5:1至20:1。本发明的溶液非常适用于通过异氰酸酯加聚方法制备聚氨酯树脂的异氰酸酯组分 。

    Apparatus for synchronizing the frame clock in units/nodes of data-transmitting systems
    4.
    发明授权
    Apparatus for synchronizing the frame clock in units/nodes of data-transmitting systems 失效
    用于在数据传输系统的单元/节点中同步帧时钟的装置

    公开(公告)号:US06778623B1

    公开(公告)日:2004-08-17

    申请号:US09677313

    申请日:2000-09-29

    IPC分类号: H03D324

    摘要: In data transmitting systems, an apparatus for synchronizing the frame clock in units/nodes. The apparatus has a phase detector and a voltage controlled oscillator. At least one input of the phase detector is supplied with an incoming clock signal and another input is supplied with an output signal of the voltage controlled oscillator. The output signal of the voltage controlled oscillator is conducted over a divider, which is connected to a frame clock phase detector for setting its division factor. The frame clock phase detector is supplied with an input frame clock, the output of the variable divider, and at least one output of an output divider. The at least one output of the output divider divides the output signal of the controlled oscillator into the output frame clock. The frame clock phase detector is configured for the output of a pulse that temporarily raises or lowers the division factor of the divider when the phase difference between input and output clock deviates from a prescribable quantity.

    摘要翻译: 在数据发送系统中,用于在单元/节点中同步帧时钟的装置。 该装置具有相位检测器和压控振荡器。 相位检测器的至少一个输入端被提供有输入时钟信号,另一个输入端被提供有压控振荡器的输出信号。 压控振荡器的输出信号通过分频器传导,分频器连接到帧时钟相位检测器,用于设置其分频因子。 帧时钟相位检测器被提供有输入帧时钟,可变分频器的输出和输出分频器的至少一个输出。 输出分频器的至少一个输出将受控振荡器的输出信号分成输出帧时钟。 帧时钟相位检测器被配置为当输入和输出时钟之间的相位差偏离规定量时,暂时升高或降低分频器的分频系数的脉冲输出。

    Method and arrangement for controlling modulated lasers

    公开(公告)号:US06647040B2

    公开(公告)日:2003-11-11

    申请号:US09880439

    申请日:2001-06-13

    IPC分类号: H01S300

    CPC分类号: H01S5/0683 H01S5/06835

    摘要: A method and an arrangement for controlling modulated lasers are provided, in which an input signal of a laser is modulated by a pilot signal. The combined signal that is emitted is then utilized to control the laser. In order to substantially prevent individual spectral lines of the input signal from affecting the pilot signal, a pilot signal is selected with a frequency spectrum that is spread substantially uniformly in the spectral range of the input signal. Versions of this method are also known by the term “spread spectrum modulation”.

    Process for producing isocyanate-based foams
    8.
    发明授权
    Process for producing isocyanate-based foams 失效
    异氰酸酯类泡沫体的制造方法

    公开(公告)号:US5428077A

    公开(公告)日:1995-06-27

    申请号:US344208

    申请日:1994-11-08

    摘要: Isocyanate-based foams are produced by the reaction of polyisocyanates with compounds with molecular weights of from 400 to 10,000 and having at least two hydrogen atoms active towards isocyanates in the presence of hydrocarbons which are vaporizable under the foaming conditions as blowing agents. The active hydrogen component is a mixture of a) one or more nitrogen-free polyethers having at least two hydrogen atoms active towards isocyanates and containing oxyethylene residues, and b) one or more polyethers having at least two hydrogen atoms active towards isocyanates and containing no oxyethylene groups.

    摘要翻译: 异氰酸酯基泡沫是通过多异氰酸酯与分子量为400至10,000的化合物反应而生成的,并且在烃的存在下具有至少两个氢原子对异氰酸酯有活性,烃在发泡条件下作为发泡剂可汽化。 活性氢组分是a)一种或多种具有至少两个对异氰酸酯有活性并含有氧化乙烯残基的氢原子的无氮聚醚的混合物,和b)一种或多种具有至少两个氢原子的聚异氰酸酯并且不含 氧乙烯基。

    Cylinder head
    10.
    发明授权
    Cylinder head 失效
    气缸盖

    公开(公告)号:US4625682A

    公开(公告)日:1986-12-02

    申请号:US710151

    申请日:1985-03-07

    摘要: A cylinder head for an internal combustion engine has at least one receptacle socket, penetrating a coolant chamber, for a spark plug and/or an injection valve. At one end, the socket rests tightly, with a frustoconical seating face, against a corresponding seating face of a seat embodied on a lower cylinder head wall, and at its other end the socket is retained in the associated cylinder head wall and is pressed axially against the seat. In order to attain particularly intensive cooling in the vicinity of the nozzle of the injection valve and/or the spark plug, the seating face on the respective socket is embodied as a female cone, and the associated seating face on the respective seat is embodied as a male cone, and the associated end faces of the respective socket are open toward the coolant chamber.

    摘要翻译: 用于内燃机的气缸盖具有穿过冷却剂室的至少一个插座插座,用于火花塞和/或喷射阀。 在一端,插座与截头圆锥形的座面紧紧地靠在座椅的下部气缸盖壁上的座椅的相应的座面上,并且在其另一端处,插座被保持在相关联的气缸盖壁中并被轴向按压 反对座位。 为了在喷射阀和/或火花塞的喷嘴附近获得特别强烈的冷却,相应插座上的就座面被实施为阴锥体,并且相应座椅上的相关联的座面体现为 阳锥体和相应插座的相关联的端面朝向冷却剂室敞开。