PROCESS FOR REDUCING POLYNUCLEAR AROMATIC MUTAGENICITY BY ALKYLATION
    61.
    发明申请
    PROCESS FOR REDUCING POLYNUCLEAR AROMATIC MUTAGENICITY BY ALKYLATION 审中-公开
    通过碱性还原多核结构的方法

    公开(公告)号:WO1994011326A1

    公开(公告)日:1994-05-26

    申请号:PCT/US1993010594

    申请日:1993-11-05

    CPC classification number: C10G29/205

    Abstract: A process for reducing the mutagenicity of a polynuclear aromatic containing material. The process includes the step of contacting the polynuclear aromatic containing material having an initial mutagenicity index value in the presence of an alkylating agent with an acid catalyst under alkylation conditions sufficient to reduce the mutagenicity of the polynuclear aromatic containing material to a level less than the initial mutagenicity index value. Also provided is a process for reducing the mutagenicity of a hydrocarbonaceous refinery stream containing polynuclear aromatic compounds having three to seven rings. The process is particularly applicable to coaltar-based materials.

    Abstract translation: 一种降低多核芳族化合物的致突变性的方法。 该方法包括使烷基化剂存在下具有初始致突变性指数值的酸性催化剂与酸催化剂接触的步骤,所述烷基化试剂在烷基化条件下足以将多核含芳族化合物的致突变性降低到低于初始 诱变指数值。 还提供了降低含有三至七个环的多核芳族化合物的含烃精炼物流的致突变性的方法。 该过程特别适用于直管式材料。

    HIGH ACTIVITY POLYETHYLENE CATALYSTS
    63.
    发明申请
    HIGH ACTIVITY POLYETHYLENE CATALYSTS 审中-公开
    高活性聚乙烯催化剂

    公开(公告)号:WO1994009041A1

    公开(公告)日:1994-04-28

    申请号:PCT/US1993009954

    申请日:1993-10-19

    CPC classification number: C08F210/16 C08F4/611 C08F4/6146

    Abstract: A catalyst for producing higher flow index linear low density polyethylene with relatively narrower molecular weight distribution is described. The catalyst is formed by treating silica having reactive OH groups with a dialkylmagnesium in a solvent for said dialkylmagnesium; then adding to said solvent a carbonyl containing compound to form an intermediate which is subsequently treated with a transition metal to form a catalyst precursor. The catalyst precursor is activated with triethylaluminum.

    Abstract translation: 描述了一种生产具有相对较窄分子量分布的较高流动指数线性低密度聚乙烯的催化剂。 通过在二烷基镁的溶剂中用二烷基镁处理具有反应性OH基团的二氧化硅形成催化剂; 然后向所述溶剂中加入含羰基化合物以形成中间体,随后用过渡金属处理以形成催化剂前体。 催化剂前体用三乙基铝活化。

    POLYPROPYLENE FILM AND PROCESS FOR MAKING SAME
    64.
    发明申请
    POLYPROPYLENE FILM AND PROCESS FOR MAKING SAME 审中-公开
    聚丙烯薄膜及其制备方法

    公开(公告)号:WO1994008784A1

    公开(公告)日:1994-04-28

    申请号:PCT/US1993009602

    申请日:1993-10-07

    Abstract: A thermoplastic film structure comprising a base layer of a thermoplastic resin which comprises polypropylene and a coating layer of a polyvinylidene fluoride is disclosed. The film is characterized by reduced coefficient of friction, improved anti-blocking characteristics, and enhanced oxygen and water vapor barrier properties. The disclosure also provides a process for making the film in which the polypropylene-containing thermoplastic resin is extruded into a sheet, said sheet oriented in the longitudinal direction to form a monoaxially oriented film, said film coated with the polyvinylidene fluoride and said coated film oriented in the transverse direction.

    Abstract translation: 公开了一种热塑性薄膜结构,其包含热塑性树脂的基层,其包含聚丙烯和聚偏二氟乙烯的涂层。 该膜的特征在于降低的摩擦系数,改善的防粘连特性以及增强的氧气和水蒸气阻隔性能。 本公开还提供了一种制备其中将含聚丙烯的热塑性树脂挤出成片的方法,所述片材沿长度方向取向以形成单轴取向膜,所述膜涂覆有聚偏二氟乙烯和所述涂膜取向 在横向上。

    METHOD FOR CEMENT PLACEMENT IN HORIZONTAL WELLS
    65.
    发明申请
    METHOD FOR CEMENT PLACEMENT IN HORIZONTAL WELLS 审中-公开
    水平井水泥配置方法

    公开(公告)号:WO1994008126A1

    公开(公告)日:1994-04-14

    申请号:PCT/US1993009213

    申请日:1993-09-28

    CPC classification number: C09K8/42 C09K8/424 E21B33/14

    Abstract: A well completion process for improved cement placement in a horizontal wellbore (10) where a fluid is circulated down the wellbore (10) for conditioning and cleaning it. Afterwards, a production tube (12) containing centralizers (14) is positioned centrally within the wellbore (10). Next, a "spacer fluid" is circulated within an annulus (18) formed by the space between the tube (12) and the wellbore (10) so as to clean the annulus (18) out. Subsequently, a cement having a density greater than the spacer fluid is pumped into the annulus (18). Thereafter, a light weight cement is pumped into the annulus (18) thereby overriding the heavier cement and removing voids in the annulus (18) resulting in more efficient cement placement.

    Abstract translation: 一种在水平井眼(10)中改进水泥放置的完井过程,其中流体沿着井筒(10)循环以用于调节和清洁它。 之后,包含扶正器(14)的生产管(12)位于井眼(10)的中心。 接下来,“间隔液”在由管(12)和井筒(10)之间的空间形成的环(18)内循环,以便清洁环(18)。 随后,将具有大于间隔液的密度的水泥泵送到环空(18)中。 此后,将轻质水泥泵送到环形空间(18)中,从而覆盖较重的水泥并去除环空(18)中的空隙,从而形成更有效的水泥铺放。

    A METHOD FOR THE INHIBITION OF SCALE DEPOSITION AND COMPOSITION THEREFOR
    68.
    发明申请
    A METHOD FOR THE INHIBITION OF SCALE DEPOSITION AND COMPOSITION THEREFOR 审中-公开
    一种抑制沉降沉积及其组成的方法

    公开(公告)号:WO1994003706A1

    公开(公告)日:1994-02-17

    申请号:PCT/US1993007354

    申请日:1993-08-05

    CPC classification number: C09K8/528 Y10S507/927

    Abstract: A method for the inhibition of scale deposition on the surfaces of a well coproducing oil and scale forming brines comprising injecting into the well reservoir an acidic aqueous solution at a first pH containing dissolved therein a scale inhibitor, multivalent metal ions, and a heat-sensitive pH-increasing substance containing no more than 10 carbon atoms, which decomposes at elevated temperatures liberating an alkaline compound such that the solution is inherently heated by the higher ambient reservoir temperature to a temperature at which the alkaline compound is liberated from the heat-sensitive substance thus raising the pH of the solution to a point at which a sparingly soluble multivalent metal salt of the scale inhibitor is phase separated from the solution on the porous surfaces of the reservoir rock formation, providing for a slow release of inhibitor into the produced brines when the well is in its production phase.

    Abstract translation: 一种用于抑制在油井共同生产的油和水垢形成盐水的表面上的水垢沉积的方法,其包括在第一pH下将在其中溶解有防垢剂,多价金属离子和热敏感的第一pH的酸性水溶液 含有不超过10个碳原子的增加pH的物质,其在升高的温度下分解,释放碱性化合物,使得溶液固有地被较高的环境储存温度加热到碱性化合物从热敏物质中释放出来的温度 从而将溶液的pH提高到水垢抑制剂的微溶多价金属盐与储层岩层的多孔表面上的溶液相分离的点,从而提供抑制剂缓慢释放到生产的盐水中, 该井正处于生产阶段。

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