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    ALKOXIDE-BASED LAYERED MIXED METAL HYDROXIDES AS CARRIERS FOR LASER DYES
    151.
    发明申请
    ALKOXIDE-BASED LAYERED MIXED METAL HYDROXIDES AS CARRIERS FOR LASER DYES 审中-公开
    基于氧化物的层状混合金属氢氧化物作为激光染色体的载体

    公开(公告)号：WO1993021961A1

    公开(公告)日：1993-11-11

    申请号：PCT/US1992003633

    申请日：1992-04-29

    Applicant: THE DOW CHEMICAL COMPANY

    Inventor： THE DOW CHEMICAL COMPANY ,  KNOBEL, Thomas, M. ,  SIMS, Steve, A. ,  BURBA, John, Leslie, III

    IPC: A61K49/00

    CPC classification number: H01S3/168 ,  A61K49/0017 ,  A61K49/0073

    Abstract: A gel composition for use as carrier of dyes for use in dye laser systems is disclosed. At rest the composition is a rigid, transparent gel which is insensitive to air or moisture, which is able to overcome heat accumulated with laser use, and which thins to a low viscosity when restricted or subjected to shearing and which quickly resolidifies to a rigid gel when shearing is reduced. More specifically, the carrier gel is comprised of layered mixed metal hydroxide particles, which may be produced by hydrolyzing a mixture of the alkoxides of magnesium and aluminum. The carrier gel is useful in dye laser systems as a solid or semi-solid, fixed or fluidized carrier of very low solids content. The dye laser systems have therapeutic diagnostic uses.

    Abstract translation: 公开了用作染料激光系统中的染料载体的凝胶组合物。 静止时，组合物是对空气或水分不敏感的刚性，透明的凝胶，其能够克服激光使用所累积的热量，并且当限制或经受剪切时其变薄至低粘度，并且其迅速地固化至刚性凝胶 当剪切减少时。 更具体地，载体凝胶由层状混合金属氢氧化物颗粒组成，其可以通过水解镁和铝的醇盐的混合物来制备。 载体凝胶在染料激光系统中可用作固体或半固体，固定或流化的载体，其固体含量非常低。 染料激光系统具有治疗诊断用途。

    CROSSLINKED HYDROPHILIC RESINS AND METHOD OF PREPARATION
    152.
    发明申请
    CROSSLINKED HYDROPHILIC RESINS AND METHOD OF PREPARATION 审中-公开
    交联的亲水树脂和制备方法

    公开(公告)号：WO1993021237A1

    公开(公告)日：1993-10-28

    申请号：PCT/US1993003489

    申请日：1993-04-14

    Applicant: THE DOW CHEMICAL COMPANY

    Inventor： THE DOW CHEMICAL COMPANY ,  GARTNER, Herbert ,  TRIJASSON, Philippe ,  PETRI, Roswitha

    IPC: C08F08/14

    CPC classification number: A61L15/60 ,  C08F8/14 ,  C08F2810/20 ,  C08G65/3322

    Abstract: The invention is a crosslinked carboxyl-containing hydrophilic resin crosslinked by a compound corresponding to formula (1): R -(O(CH(R )CH(R )O)y-C(O)-R )x wherein R is independently in each occurrence a C2-10 straight- or branched-chain alkyl moiety; R is independently in each occurrence a C2-10 straight- or branched-chain alkenyl moiety; R is independently in each occurrence hydrogen or methyl; x is independently in each occurrence 2 or greater; where x is 2, y is independently in each occurrence 3 to 8; and where x is 3 or greater, y is independently in each occurrence 2 to 7. In another embodiment, the invention is a process for the preparation of crosslinked hydrophilic resins which comprises A) contacting one or more ethylenically unsaturated carboxylic acids, acid anhydrides, and optionally one or more comonomers with a crosslinking compound of formula (1) in an aqueous medium, optionally in the presence of a free radical or redox initiator catalyst system, under conditions such that a crosslinked hydrophilic resin is prepared. Optionally, the properties of the crosslinked hydrophilic resin are enhanced by heating the crosslinked hydrophilic resin under conditions such that the crosslinked hydrophilic resin exhibits a centrifuge capacity 25 (g/g) or greater, an absorption under load of 25 g/g or greater, and a ratio of absorption under load to centrifuge capacity of 0.6 or greater.

    Abstract translation: 本发明是通过对应于式（1）的化合物交联的交联的含羧基的亲水性树脂：R 1 - （O（CH（R 3）CH（R 3）O）y C（O） - R 2）x其中R 1在每次出现时独立地为C 2-10直链或支链烷基部分; R 2在每次出现时独立地为C 2-10直链或支链烯基部分; R 3在每次出现时独立地为氢或甲基; x在每次出现时独立为2或更大; 其中x是2，y在每次出现3到8时是独立的; 在另一个实施方案中，本发明是制备交联亲水性树脂的方法，其包括：A）使一种或多种烯属不饱和羧酸，酸酐， 和任选的一种或多种具有式（1）的交联化合物的共聚单体在水性介质中，任选地在游离基或氧化还原引发剂催化剂体系的存在下，在制备交联亲水性树脂的条件下。 任选地，通过在交联的亲水性树脂显示离心机容量25（g / g）或更大，负载下的吸收为25g / g以上的条件下加热交联的亲水性树脂，可以提高交联亲水性树脂的性能， 负载下的吸收与离心机容量之比为0.6以上。

    POLYMERS AND POLYMER BLENDS MODIFIED WITH POLY(PHENYLENE ETHER)
    154.
    发明申请
    POLYMERS AND POLYMER BLENDS MODIFIED WITH POLY(PHENYLENE ETHER) 审中-公开
    用聚（苯乙烯）改性的聚合物和聚合物混合物

    公开(公告)号：WO1993019128A2

    公开(公告)日：1993-09-30

    申请号：PCT/US1993002176

    申请日：1993-03-10

    Applicant: THE DOW CHEMICAL COMPANY

    Inventor： THE DOW CHEMICAL COMPANY ,  LAUGHNER, Michael, K.

    IPC: C08L69/00

    CPC classification number: C08L69/00 ,  C08L33/06 ,  C08L51/00 ,  C08L53/025 ,  C08L67/02 ,  C08L71/123 ,  C08L101/00 ,  C08L2555/40 ,  C08L2666/02 ,  C08L2666/14

    Abstract: A matrix resin such as a polycarbonate/polyester blend, a polycarbonate, a vinyl aromatic copolymer or an acrylate polymer or copolymer is admixed in a composition with poly(phenylene ether), and/or with a poly(phenylene ether) concentrate containing poly(phenylene ether), polystyrene, a vinyl aromatic copolymer, polyamide, polycarbonate, polyester, poly(alkyl acrylate), and/or poly(alkyl methacrylate). The compositions may also optionally contain additional vinyl aromatic copolymer as a separate component, impact modifiers, thermoplastic molding materials including polystyrene, polyolefin, polyamide, poly(vinyl chloride), polyurethane, poly(methyl methacrylate) and polyacetal, and conventional additives such as dyes and pigments. The compositions when molded, particularly when the poly(phenylene ether) content thereof is low (for example, 5 weight percent or less) show a desirably low gloss, and a desirable balance of other properties.

    Abstract translation: 将组合物中的基质树脂如聚碳酸酯/聚酯共混物，聚碳酸酯，乙烯基芳族共聚物或丙烯酸酯聚合物或共聚物与聚（亚苯基醚）和/或与聚（亚苯基醚） 亚苯基醚），聚苯乙烯，乙烯基芳族共聚物，聚酰胺，聚碳酸酯，聚酯，聚（丙烯酸烷基酯）和/或聚（甲基丙烯酸烷基酯）。 组合物还可任选地含有另外的乙烯基芳族共聚物作为单独组分，抗冲改性剂，包括聚苯乙烯，聚烯烃，聚酰胺，聚（氯乙烯），聚氨酯，聚甲基丙烯酸甲酯和聚缩醛的热塑性成型材料，以及常规的添加剂如染料 和颜料。 当模塑时，特别是当其聚（苯醚）含量低（例如5重量％或更少）时）的组合物显示出期望的低光泽度和其它性能的期望的平衡。

    SILICA SUPPORTED TRANSITION METAL CATALYST
    155.
    发明申请
    SILICA SUPPORTED TRANSITION METAL CATALYST 审中-公开
    二氧化硅支持的过渡金属催化剂

    公开(公告)号：WO1993019105A2

    公开(公告)日：1993-09-30

    申请号：PCT/US1993002751

    申请日：1993-03-17

    Applicant: THE DOW CHEMICAL COMPANY

    Inventor： THE DOW CHEMICAL COMPANY ,  SPENCER, Lee ,  KOLTHAMMER, Brian, W., S. ,  RIPPLINGER, Miriam, P. ,  WOOSTER, Jeffrey, J. ,  CHUM, Pak-Wing, Steve ,  DEGROOT, Jacquelyn, Ann

    IPC: C08F10/00

    CPC classification number: C08F10/00 ,  Y10S428/91 ,  Y10T428/26 ,  Y10T428/31855 ,  C08F4/6555 ,  C08F4/6357

    Abstract: A transition metal containing catalyst useful for the polymerization of alpha -olefins is prepared by (A) forming in an inert atmosphere which excludes oxygen and moisture a slurry of (1) a porous inorganic oxide support material selected from the group consisting of silica, alumina, or a combination of silica and alumina, said support material containing not greater than about 5 millimoles of hydroxyl groups per gram of support material and a particle size not greater than about 10 microns and a surface area of from about 50 to about 800 m /g in an inert organic liquid medium; (B) mixing said slurry with (2) an alkoxide and stirring the resultant mixture at a temperature of from about -20 DEG C to about 120 DEG C for a time sufficient to saturate the surface of the support material; (C) mixing the product form (B) with (3) a titanium compound or a combination of a titanium compound and (4) a vanadium compound and stirring the resultant mixture at a temperature of from about -20 DEG C to about 120 DEG C for a time sufficient to allow complete reaction of the titanium compound and the vanadium compound with the organomagnesium moieties remaining on the solid support; (D) mixing the product from (C) with an inert organic solution of (5) a Group IIIA metal alkyl halide at a temperature of from about -20 DEG C to about 120 DEG C for a time sufficient to complete the reduction of the titanium and vanadium, if present, compounds to their final oxidation state. Ethylene/alpha-olefin copolymers which have greater than 17 percent high density fraction and an Mw/Mn ratio of less than about 3.6 are shown to be useful in making cast films which have good stretchability and good puncture resistance. Copolymers of the present invention having the specified properties are especially useful in making the films.

    Abstract translation: 用于α-烯烃聚合的含过渡金属的催化剂通过以下步骤制备：（A）在惰性气氛中形成不含氧气和湿气的浆料（1）多孔无机氧化物载体材料，其选自二氧化硅，氧化铝 ，或二氧化硅和氧化铝的组合，所述载体材料每克载体材料含有不大于约5毫摩尔羟基，不大于约10微米的颗粒尺寸和约50至约800微米的表面积， 2> / g在惰性有机液体介质中; （B）将所述浆料与（2）醇盐混合并在约-20℃至约120℃的温度下搅拌所得混合物足以使载体材料表面饱和的时间; （C）将产品形式（B）与（3）钛化合物或钛化合物和（4）钒化合物的组合混合并在约-20℃至约120℃的温度下搅拌所得混合物 C足够使钛化合物和钒化合物与残留在固体载体上的有机镁部分完全反应; （D）在约-20℃至约120℃的温度下将来自（C）的产物与（5）IIIA族金属烷基卤的惰性有机溶液混合足够的时间以完成 钛和钒（如果存在）化合物达到其最终氧化态。 显示出具有大于17％的高密度分数和小于约3.6的Mw / Mn比的乙烯/α-烯烃共聚物可用于制备具有良好的拉伸性和良好的耐穿刺性的流延薄膜。 具有特定性质的本发明的共聚物在制备膜中特别有用。

    SiA1ON COMPOSITES AND METHOD OF PREPARING THE SAME
    158.
    发明申请
    SiA1ON COMPOSITES AND METHOD OF PREPARING THE SAME 审中-公开
    SIAONON复合材料及其制备方法

    公开(公告)号：WO1993017981A1

    公开(公告)日：1993-09-16

    申请号：PCT/US1993001822

    申请日：1993-02-26

    Applicant: THE DOW CHEMICAL COMPANY

    Inventor： THE DOW CHEMICAL COMPANY ,  HWANG, Chinmau, James ,  BEAMAN, Donald, R.

    IPC: C04B35/58

    CPC classification number: C04B35/597

    Abstract: This invention is a multi-phase SiA1ON composite having a first or alpha-SiA1ON phase prepared from a multi-cationic mixture including oxides and nitrides of strontium, at least one of yttrium or a rare earth metal, and at least one other metal such as Ca, Mg, Li or Na. The composite also has a second or beta-SiA1ON phase, and a third phase of intergranular amorphous morphology including Si, A1, O and N combined with a mixture of strontium, at least one of Ca, Mg, Li or Na and at least one of yttrium or a rare earth element. The material is useful for high wear, high temperature machine or engine components and tools. The composite is prepared from a mixture of Si3N4. A1N and a multi-cationic composition that includes (1) an oxide or nitride of Sr, (2) at least one compound selected from oxides and nitrides of Ca, Mg, Li and Na and (3) at least one oxide or nitride of Y or rare earth elements.

    APPARATUS UTILIZING CONSTANT PRESSURE-LOADED SHAFT SEAL
    160.
    发明申请
    APPARATUS UTILIZING CONSTANT PRESSURE-LOADED SHAFT SEAL 审中-公开
    装置应用恒压轴承密封件

    公开(公告)号：WO1993015399A1

    公开(公告)日：1993-08-05

    申请号：PCT/US1993000159

    申请日：1993-01-08

    Applicant: THE DOW CHEMICAL COMPANY

    Inventor： THE DOW CHEMICAL COMPANY ,  RUIZ, Frank, A. ,  EVERITT, Oscar, C.

    IPC: G01N30/20

    CPC classification number: G01N35/1097 ,  G01N30/20 ,  G01N2030/204 ,  Y10S277/91

    Abstract: An on-line gas chromatographic liquid inject valve (10) which comprises (a) a sampling shaft (16) having a channel (18) defined therein which is reciprocal between a sampling position wherein a liquid stream (14) flows across the shaft and through the channel and an inject position (A) wherein the channel traverses a length of a seal (48) and delivers a liquid sample carried from the liquid stream in the channel to a gas chromatograph (12) for analysis, (b) a piston arrangement (20) for causing the sampling shaft to reciprocate between the sampling position and the inject position, (c) a seal around the sampling shaft and between the liquid stream and the gas chromatograph in use of the valve, and (d) a second piston arrangement (52) for placing and maintaining a constant pressure against the seal as the seal wears from frictional contact between the sampling shaft and the seal.

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