Hardening phenol-formaldehyde resols in the presence of aniline
    1.
    发明授权
    Hardening phenol-formaldehyde resols in the presence of aniline 失效
    在苯胺存在下,硬化苯酚 - 甲醛

    公开(公告)号:US4555544A

    公开(公告)日:1985-11-26

    申请号:US687230

    申请日:1984-12-28

    摘要: In a process for hardening phenol-formaldehyde resol resins, comprising conducting the hardening of the resins with an acidic solution of water and/or an organic solvent having dissolved therein an aromatic sulphonic acid and/or concentrated sulphuric acid, the improvement comprising the hardening in the presence of aniline added to the phenolic resin beforehand in a quantity of between about 0.5 and 2% relative to the weight of the phenolic resin whereby the pot life is extended and the cure time is satisfactory, the resultant products being especially useful as prepegs.

    摘要翻译: 在固化酚醛树脂树脂的方法中,包括用酸和/或其中溶解有芳香族磺酸和/或浓硫酸的有机溶剂的酸性溶液进行树脂硬化,其改进包括在 相对于酚醛树脂的重量,预先将苯胺加入到酚醛树脂中的量为约0.5-2%,从而延长适用期并且固化时间令人满意,所得产物特别适用于制备。

    Apparatus for reducing the chances of ignition and explosion from the
decomposition of high-pressure industrial process ethylene gases
    2.
    发明授权
    Apparatus for reducing the chances of ignition and explosion from the decomposition of high-pressure industrial process ethylene gases 失效
    用于降低高压工业乙烯气体分解引起的点火和爆炸的机会的设备

    公开(公告)号:US4534942A

    公开(公告)日:1985-08-13

    申请号:US406997

    申请日:1982-08-10

    摘要: An apparatus for evacuating the gases resulting from the decomposition of industrial process gases, such as ethylene, contained in a vessel under high pressure is adjacent to the vessel. The apparatus comprises:(1) at least one safety means separating the apparatus from the vessel;(2) a reservoir with a volume which is 2 to 100 times that of the vessel;(3) at least one connecting pipe between the vessel and the reservoir; and(4) at least one chimney between the reservoir and the atmosphere.The apparatus is useful for the recovery of decomposition gases for the purpose of preventing atmospheric pollution. The risk of explosion is reduced by evacuating decomposition gases through the apparatus.

    摘要翻译: 用于排出容纳在高压容器中的工业过程气体如乙烯产生的气体的装置与容器相邻。 该装置包括:(1)将装置与容器分开的至少一个安全装置; (2)容积为容器2至100倍的储存器; (3)容器和储存器之间的至少一个连接管; 和(4)储存器和大气之间的至少一个烟囱。 该装置用于回收分解气体,以防止大气污染。 通过将分解气体排出设备来减少爆炸危险。

    Compositions for the manufacture of hot-melt adhesives
    4.
    发明授权
    Compositions for the manufacture of hot-melt adhesives 失效
    用于制造热熔胶的组合物

    公开(公告)号:US4404299A

    公开(公告)日:1983-09-13

    申请号:US368686

    申请日:1982-04-15

    摘要: A composition for the manufacture of hot-melt adhesives, in which the improvement comprises a terpolymer of ethylene having a melt index between 5 and 500 dg/minute and comprising from 1 to 10 mol % of units derived from an ester selected from alkyl acrylates and methacrylates, the alkyl group having from 1 to 6 carbon atoms, and from 0.3 to 3 mol % of units derived from maleic anhydride. The composition also contains at least one tackifying resin and may contain at least one compound selected from paraffin, microcrystalline polymeric wax, and esters of a hydrogenated rosinic acid and of a lower alcohol.

    摘要翻译: 一种用于制造热熔粘合剂的组合物,其中改进包括熔体指数为5至500dg /分钟的乙烯的三元共聚物,并且包含1至10摩尔%的衍生自选自丙烯酸烷基酯和 甲基丙烯酸酯,具有1至6个碳原子的烷基和0.3至3摩尔%的源自马来酸酐的单元。 组合物还含有至少一种增粘树脂,并且可以含有至少一种选自石蜡,微晶聚合物蜡和氢化松香酸和低级醇的酯的化合物。

    Apparatus for reducing the chances of ignition and explosion due to the
decomposition of high-pressure industrial process gases
    5.
    发明授权
    Apparatus for reducing the chances of ignition and explosion due to the decomposition of high-pressure industrial process gases 失效
    用于降低高压工业过程气体分解引起的点火和爆炸的机会的装置

    公开(公告)号:US4339412A

    公开(公告)日:1982-07-13

    申请号:US143635

    申请日:1980-04-25

    摘要: The danger of explosion due to decomposition of high-pressure industrial process gases, such as ethylene, is reduced by maintaining in an inert atmosphere at least part of an evacuation system included between a pressurized vessel within which the decomposition may take place, on the one hand, and the atmosphere, on the other.The evacuation system to the atmosphere for the gases contained in the high-pressure vessel, includes(1) an evacuation pipe adjacent to the vessel;(2) a safety means separating the evacuation pipe from the vessel;(3) a sealing means located in the evacuation path of the gases and occupying the entire cross-section of the evacuation pipe;(4) a first gas supply circuit connected by a pipe to that part of the evacuation pipe that is located between the safety means and the sealing means, and means for the first supply pipe to control the volume of gas supplied by the first supply circuit; and(5) a second gas supply circuit connected by a pipe to the sealing system, and means for the second supply pipe to control the volume of gas fed by the second supply circuit.The apparatus is useful for the recovery of decomposition products for the purpose of averting atmospheric pollution, as well as for reducing the risk of explosion.

    摘要翻译: 由于高压工业气体如乙烯的分解引起的爆炸的危险通过在惰性气氛中保持至少部分排气系统,包括在其中可能发生分解的加压容器之间,在一个 手,和气氛,另一方面。 包含在高压容器中的气体向大气排放的系统包括:(1)与容器相邻的排气管; (2)将疏散管与容器分离的安全装置; (3)位于排气通道中的密封装置,并占据排气管的整个横截面; (4)第一气体供给回路,其由管道连接到位于安全装置和密封装置之间的排气管的该部分,以及用于控制由第一供给回路供给的气体的体积的装置 ; 和(5)通过管道连接到所述密封系统的第二气体供给回路,以及用于所述第二供给管的装置,用于控制由所述第二供给回路供给的气体的体积。 该装置用于回收分解产物,以避免大气污染,以及降低爆炸的风险。

    Process for reducing metallic halides in the vapor phase by means of
solid organomagnesium compounds and catalytic components resulting
therefrom
    6.
    发明授权
    Process for reducing metallic halides in the vapor phase by means of solid organomagnesium compounds and catalytic components resulting therefrom 失效
    通过固体有机镁化合物和由此产生的催化组分在气相中还原金属卤化物的方法

    公开(公告)号:US4339392A

    公开(公告)日:1982-07-13

    申请号:US186662

    申请日:1980-09-12

    申请人: Karel Bujadoux

    发明人: Karel Bujadoux

    CPC分类号: C08F4/022 C08F10/00

    摘要: A catalytic component having the formula(MX.sub.a) (MgX.sub.2).sub.b (RMgX).sub.c (MHgX).sub.dwherein M is a metal selected from group VI B and group V B of the Periodic Classification, X is a halogen, R is a hydrocarbon radical, 2.ltoreq.a .ltoreq.3.5, 1.ltoreq.b.ltoreq.30, 1.ltoreq.c.ltoreq.8 and 0.ltoreq.d.ltoreq.10 is prepared by reducing a metallic halide of the metal M, the valency of said metal being 4 if a metal of group IV B is concerned and 4 or 5 if a metal of group V B is concerned, by means of at least one organomagnesium compound having the formula RMgX, the said organomagnesium compound being used in the solid state and reduction of the metallic halide being carried out under a pressure lower than or equal to atmospheric pressure and at a temperature lower than the decomposition point of said organomagnesium compound under the pressure concerned but at least 10.degree. higher than the boiling point or sublimation point of the metallic halide under the pressure concerned.

    摘要翻译: 具有式(MXa)(MgX2)b(RMgX)c(MHgX)d的催化组分,其中M是选自元素周期分类的VIB族和VB族的金属,X是卤素,R是烃基, 通过还原金属M的金属卤化物来制备2

    Bi- and Trifunctional organolithium initiators and applications thereof
    8.
    发明授权
    Bi- and Trifunctional organolithium initiators and applications thereof 失效
    双和三官能有机锂引发剂及其应用

    公开(公告)号:US4311818A

    公开(公告)日:1982-01-19

    申请号:US165621

    申请日:1980-07-03

    摘要: New organo-lithium initiators, their synthesis, and their use. The initiators have the formula: ##STR1## in which R" is either a hydrogen atom or a methyl radical; either n is 1, in which case R'=H and m and p are integers, the sum of which is between 0 and 10 inclusive, or n is 2, R' then being an alkyl radical of 2 to 8 carbon atoms and m=p=o; and R is an alkyl radical of 1 to 4 carbon atoms.The initiators are prepared by reacting compounds of the formula; ##STR2## with an alkyl-lithium RLi in a non-polar solvent in the absence of any polar solvent or complexing agent.The initiators are used to prepare polydienes of high stereoregularity by reacting with a diene, and the polydiene is used to prepare a three-block or star copolymer by reacting with an anionically polymerizable monomer.

    摘要翻译: 新的有机锂引发剂,它们的合成及其用途。 引发剂具有以下分子式:其中R“为氢原子或甲基; n为1,在这种情况下R'= H,m和p为整数,其总和在0和10之间,或n为2,R'为2至8个碳原子的烷基,m = p = o; 且R为1至4个碳原子的烷基。 引发剂通过使下式的化合物反应制备: 在没有任何极性溶剂或络合剂的情况下,在非极性溶剂中使用烷基锂RLi。 引发剂用于通过与二烯反应制备高立构规整性的聚二烯,并且聚二烯用于通过与阴离子聚合单体反应制备三嵌段或星形共聚物。

    Process for the polymerization and copolymerization of ethylene, using a
gas injection device
    9.
    发明授权
    Process for the polymerization and copolymerization of ethylene, using a gas injection device 失效
    使用气体注入装置的乙烯的聚合和共聚方法

    公开(公告)号:US4215207A

    公开(公告)日:1980-07-29

    申请号:US692380

    申请日:1976-06-03

    摘要: Process and device for cooling a mixture of polymer and monomer from a reactor in which ethylene is polymerized or copolymerized at a pressure greater than 1,000 bars between a pressure-reduction valve located downstream of the reactor and a medium pressure separator. The cooling is achieved by injecting monomer at a pressure below that of the separator using a device with a nozzle cross-section S.sub.1 through which the mixture from the reactor passes, a convergent mixing zone in which the mixture is mixed with the monomer injected, which is supplied at a flow rate q, and a diffuser of throat cross-section S.sub.3, which makes it possible to bring the mixture to the pressure of the separator. The dimensions of the device are such that the ratio Q/S.sub.1 is between 0.20 and 1.35 t/hr.mm2 and the ratio (q+Q/S.sub.3 is between 0.1 and 0.3 t/hr.mm2.

    摘要翻译: 将聚合物和单体的混合物从反应器中冷却的方法和装置,其中乙烯在位于反应器下游的减压阀和中压分离器之间以大于1,000巴的压力聚合或共聚。 通过使用具有喷嘴横截面S1的装置,通过将来自反应器的混合物通过的装置,将混合物与注入的单体混合的收敛混合区域,将压力低于分离器的压力注入单体来实现冷却,其中 以流量q和喉部横截面S3的扩散器供应,这使得可以使混合物达到分离器的压力。 该装置的尺寸使得Q / S1的比值在0.20和1.35t / hr.mm2之间,比率(q + Q / S3在0.1和0.3t / hr.mm2之间)。