Copolymer compositions derived from unsaturated triazines
    3.
    发明授权
    Copolymer compositions derived from unsaturated triazines 失效
    衍生自不饱和三嗪的共聚物组合物

    公开(公告)号:US4882404A

    公开(公告)日:1989-11-21

    申请号:US60785

    申请日:1987-06-12

    IPC分类号: C08F220/12 C10M149/10

    摘要: New compositions, useful as viscosity additives, having dispersing properties in various hydrocarbon oils, are disclosed, which comprise:recurrent units derived from one or more acrylic or methacrylic esters (e.g. 55-99.8% by weight),recurrent units derived from one or more nitrogenous vinyl monomers obtained by reacting triallylcyanurate with aliphatic amines or polyamines (e.g. 0.2-10% by weight), and optionallyrecurrent units derived from one or more vinyl aromatic monomers (e.g. 0-35% by weight).These copolymer compositions generally have a weight average molecular weight from 30,000 to 800,000 and a polydispersity generally lower than 5. They can be prepared by any radical copolymerization process using for example azoic or peroxydic initiators.The copolymer compositions considered are used as additives for improving the rheological properties of hydrocarbon oils. in addition, they exhibit good dispersing properties.

    摘要翻译: 新的组合物,可用作粘度添加剂,在各种烃油中具有分散性,其包括:衍生自一种或多种丙烯酸或甲基丙烯酸酯的反复单元(例如55-99.8%重量),衍生自一种或多种 通过三烯丙氰酸酯与脂族胺或多胺(例如0.2-10重量%)反应获得的含氮乙烯基单体,以及任选地衍生自一种或多种乙烯基芳族单体的反复单元(例如0-35%重量)。 这些共聚物组合物通常具有30,000至800,000的重均分子量和通常低于5的多分散性。它们可以通过使用例如偶氮或过氧化物引发剂的任何自由基共聚方法制备。 所考虑的共聚物组合物用作改善烃油流变性能的添加剂。 此外,它们表现出良好的分散性能。

    Method for inhibiting or retarding hydrate formation, growth and/or
agglomeration
    5.
    发明授权
    Method for inhibiting or retarding hydrate formation, growth and/or agglomeration 失效
    抑制或延缓水合物形成,生长和/或附聚的方法

    公开(公告)号:US5789635A

    公开(公告)日:1998-08-04

    申请号:US796133

    申请日:1997-02-06

    摘要: The invention concerns a process for inhibiting or retarding hydrate formation, growth and/or agglomeration in a fluid comprising water and gases, by addition of a hydrosoluble copolymer which does not contain a heterocycle but contains at least one sulphonate group. The copolymer is generally introduced at a concentration of 0.05% to 5% by weight with respect to the quantity of water in the medium. The copolymer can also be mixed with an alcohol (monoalcohol or polyol). In this case, the proportions are generally 0.5% to 20% by weight of alcohol with respect to the water content, for 0.05% to 3% by weight of copolymer with respect to the quantity of water content of the medium.

    摘要翻译: 本发明涉及通过加入不含杂环但含有至少一个磺酸酯基团的水溶性共聚物来抑制或阻滞包含水和气体的流体中的水合物形成,生长和/或附聚的方法。 通常以相对于介质中的水的量为0.05重量%至5重量%的浓度引入共聚物。 共聚物也可以与醇(一元醇或多元醇)混合。 在这种情况下,相对于水分含量,相对于水分含量,相对于共聚物,相对于水分而言,所述比例通常为0.5〜20重量%,相对于所述介质的水分量为0.05〜3重量%。

    Process and device for destroying solid waste by pyrolysis
    7.
    发明授权
    Process and device for destroying solid waste by pyrolysis 失效
    通过热解破坏固体废物的方法和装置

    公开(公告)号:US4831944A

    公开(公告)日:1989-05-23

    申请号:US147205

    申请日:1988-01-22

    CPC分类号: C10B53/00 C10B19/00 C10B49/02

    摘要: This invention relates to a process and device for destroying solid waste by pyrolysis, in which a column of such waste is upwardly traversed at least partially by a stream of hot gas blown in at the base of said column, wherein said stream of hot gas is generated by at least one plasma jet. The invention results in the destruction of non-burned residues and in the improved flow of the molten residues.

    摘要翻译: 本发明涉及一种用于通过热解破坏固体废物的方法和装置,其中这种废物的塔至少部分地通过在所述塔的底部吹入的热气流向上横过,其中所述热气流是 由至少一个等离子体射流产生。 本发明导致未燃烧的残余物的破坏和熔融残余物的改善的流动。

    Microwave polymerization system for dentistry
    9.
    发明授权
    Microwave polymerization system for dentistry 失效
    牙科微波聚合系统

    公开(公告)号:US06441354B1

    公开(公告)日:2002-08-27

    申请号:US09399997

    申请日:1999-09-20

    IPC分类号: H05B668

    摘要: A microwave polymerization system for dentistry utilizes specifically controlled microwave energy to cure polymer materials so as to produce dental prosthetics, such as dentures, bridges and crowns, that are made in an extra-oral setting such as a dental laboratory or dental office, and to create dental composites for fillings and veneers that are used in an intra-oral setting directly in the patient's mouth. Unlike the microwave energy delivered by commercial microwave ovens which is controlled by pulsing a maximum voltage pulse on and off at a given duty cycle, the system utilizes metered and controlled microwave energy that is preferably continuous and voltage controlled, and regulates the application of this microwave energy by use of various feedback and control mechanisms. The metered and controlled microwave energy enables a higher degree of conversion of monomers into polymer chains in the polymerization process, thereby enhancing the physical and biocompatibility characteristics of both dental prosthetics and dental composites made from polymers. In an extra-oral embodiment, gaseous pressure is applied to the resin matrix during the polymerization process to further enhance the polymerization process. In an intra-oral embodiment, the polymerization process can be accomplished with less overall energy and with composite-matrices that maximally absorb the microwave energy so as to reduce heating of adjacent tissue.

    摘要翻译: 用于牙科的微波聚合系统利用专门控制的微波能量来固化聚合物材料,以便生产诸如牙科实验室或牙科诊所等口腔外设备的假牙,如桥牙和牙冠,以及 为口腔内直接在患者口腔中使用的填充物和单板创建牙科复合材料。 与通过在给定占空比下脉冲最大电压脉冲的最大电压脉冲控制的商业微波炉提供的微波能量不同,系统利用优选连续和电压控制的计量和受控的微波能量,并且调节该微波的应用 通过使用各种反馈和控制机制的能量。 计量和控制的微波能量使得在聚合过程中单体转化成聚合物链的程度更高,从而增强了由聚合物制成的牙科假肢和牙科复合材料的物理和生物相容性特征。 在口外实施方案中,在聚合过程中将气体压力施加到树脂基质上以进一步增强聚合过程。 在口内实施方案中,可以以更少的总能量和最大限度地吸收微波能量以减少相邻组织的加热的复合基质来实现聚合过程。