公开(公告)号：WO1994022940A1

公开(公告)日：1994-10-13

申请号：PCT/US1993002872

申请日：1993-03-29

Applicant: THE DOW CHEMICAL COMPANY ,  STAPLES, Thomas, L. ,  WOOD, Stewart, P. ,  TREPTOW, Warren, L.

Inventor： THE DOW CHEMICAL COMPANY

IPC: C08J03/12

CPC classification number: C08J3/124 ,  B01J20/26 ,  C08J2300/14 ,  C08K5/05 ,  C08K5/06

Abstract: The subject invention provides water-swellable polymer compositions having reduced dusting tendencies, i.e., reduced amounts of unassociated dust having a maximum diameter less than or equal to 10 microns and/or the tendency to generate reduced amounts of unassociated dust having a maximum diameter less than or equal to 10 microns upon attrition; a process for preparing such compositions; and a process useful for ascertaining the amount of unassociated matter having a diameter less than a predetermined size, such as unassociated dust having a maximum diameter less than or equal to 10 microns, present in such compositions.

Abstract translation: 本发明提供了具有降低的粉尘倾向的水溶胀性聚合物组合物，即最小直径小于或等于10微米的非缔合粉尘的量减少和/或产生减少量的最大直径小于 或在磨损时等于10微米; 制备这种组合物的方法; 以及用于确定具有小于预定尺寸的直径的非缔合物质的量的方法，例如具有最大直径小于或等于10微米的非相关粉尘。

公开(公告)号：WO1994022787A1

公开(公告)日：1994-10-13

申请号：PCT/US1994001688

申请日：1994-02-15

Applicant: THE DOW CHEMICAL COMPANY

Inventor： THE DOW CHEMICAL COMPANY ,  GUITON, Theresa, A. ,  MILLS, Lynne, K.

IPC: C04B35/58

CPC classification number: C04B35/581

Abstract: Sintered aluminum nitride bodies having a TC of at least 200 W/m.K are prepared by sintering under non-reducing conditions and controlling interrelated parameters such as binder burnout atmosphere, heating rate, sintering temperature, time at sintering temperature, cooling rate and cooling temperature. The sintered bodies may also have a TC in excess of 270 W/m.K.

Abstract translation: 通过在非还原条件下烧结并控制诸如粘合剂烧尽气氛，加热速率，烧结温度，烧结温度，冷却速度和冷却温度之间的相关参数来制备具有至少200W / m·K的TC的烧结氮化铝体。 烧结体也可以具有超过270W / m·K的TC。

公开(公告)号：WO1994021574A1

公开(公告)日：1994-09-29

申请号：PCT/US1993002443

申请日：1993-03-18

Applicant: THE DOW CHEMICAL COMPANY

Inventor： THE DOW CHEMICAL COMPANY ,  DUBENSKY, Ellen, M. ,  TIMM, Edward, E. ,  GULAU, Ann, M. ,  BOARD, Julie, L.

IPC: C04B35/52

CPC classification number: C04B35/6455 ,  C04B35/5626

Abstract: A powdered admixture of a boron, carbon, nitrogen or silicon derivative of a first metal is combined with at least one other reactant that is selected from (a) a boron, carbon, nitrogen or silicon derivative of a second metal wherein the derivative differs from that of the first metal, (b) a source of a second metal and a source of a third metal, or (c) a source of the second metal and a densification promoting amount of an iron group metal, subjected to densification conditions (heat and pressure), partially reacted and converted to a hard, wear resistant material. The wear resistant material contains an amount of the first metal derivative as well as at least one material of varying stoichiometry that is the partial reaction product. The material may also contains residual, unreacted portions of components other than the first metal derivative. Articles formed from this material can be useful in wear resistant applications.

Abstract translation: 将第一金属的硼，碳，氮或硅衍生物的粉末状混合物与至少一种选自（a）第二金属的硼，碳，氮或硅衍生物的其它反应物组合，其中衍生物不同于 第一金属，（b）第二金属源和第三金属源，或（c）第二金属源和致密化促进量的铁族金属的致密化条件（热量 和压力），部分反应并转化成硬的耐磨材料。 耐磨材料含有一定量的第一金属衍生物以及作为部分反应产物的化学计量变化的至少一种材料。 所述材料还可含有第一金属衍生物以外的残留的未反应部分。 由该材料形成的制品可用于耐磨应用。

公开(公告)号：WO1994019754A1

公开(公告)日：1994-09-01

申请号：PCT/US1994000284

申请日：1994-01-04

Applicant: THE DOW CHEMICAL COMPANY ,  WALTER, Hilger, A. ,  QUELLE, Ernst ,  NAZER, Yahya

Inventor： THE DOW CHEMICAL COMPANY

IPC: G06F15/31

CPC classification number: H03H21/0029

Abstract: A method for adjusting an adaptive exponential filter (3), especially for noise reduction. The input of the filter is supplied with a series of time-discrete input signals (Xk) containing both data and noise. An estimate of the standard deviation ( sigma ) of the filter input signal (Xk) has been determined prior to the execution of the adaptive exponential filter method. The method comprises the steps of: measuring the deviation (dk) between the current filter input signal (Xk) to the filter and the prior sample period's output signal (Yk-1) from the filter; determining the proportion (Rk) of the deviation to the estimate of the standard deviation; and, adjusting the discrete time constant (Fk) of the filter in response to the proportion to provide a filter output signal (Yk) at the output of the filter.

Abstract translation: 一种用于调整自适应指数滤波器（3）的方法，特别是用于降噪。 滤波器的输入端提供一系列包含数据和噪声的时间离散输入信号（Xk）。 在执行自适应指数滤波方法之前已经确定了滤波器输入信号（X k）的标准偏差（sigma）的估计。 该方法包括以下步骤：测量滤波器的电流滤波器输入信号（Xk）与来自滤波器的先前采样周期的输出信号（Yk-1）之间的偏差（dk）; 确定偏差的比例（Rk）与标准偏差的估计值; 以及响应于所述比例来调整所述滤波器的离散时间常数（F k）以在所述滤波器的输出处提供滤波器输出信号（Yk）。

公开(公告)号：WO1994019275A1

公开(公告)日：1994-09-01

申请号：PCT/US1993010266

申请日：1993-10-27

Applicant: THE DOW CHEMICAL COMPANY

Inventor： THE DOW CHEMICAL COMPANY ,  HOWARD, Kevin, E. ,  MOYER, John, R.

IPC: C01B21/072

CPC classification number: C01B21/0728

Abstract: An aluminum nitride powder that has substantially no ammonia odor after exposure to atmospheric moisture is obtained placing the powder in operative contact, such as by admixing, with a gettering compound that sublimes or decomposes at a temperature below 500 DEG C. Admixing is one method of obtaining operative contact. The gettering compound is a C1-C11 aliphatic carboxylic mono- or polyfunctional acid, an anhydride or an ester of such an acid or an anhydride of an aromatic carboxylic acid.

Abstract translation: 获得在暴露于大气湿气之后基本上不具有氨气味的氮化铝粉末，其将粉末与例如在500℃以下升华或分解的吸气化合物混合，将其与操作接触进行接触。混合是一种方法 获得手术接触。 吸气化合物是C1-C11脂族羧酸单官能或多官能酸，酸酐或这种酸或芳族羧酸酐的酯。

公开(公告)号：WO1994018258A1

公开(公告)日：1994-08-18

申请号：PCT/US1993001094

申请日：1993-02-08

Applicant: THE DOW CHEMICAL COMPANY

Inventor： THE DOW CHEMICAL COMPANY ,  MUNJAL, Sarat ,  WARDLOW, Thomas, M. ,  HALL, Andrew, F.

IPC: C08G64/20

CPC classification number: C08G64/14 ,  C08G64/24

Abstract: A process for preparing polycarbonate wherein a chain terminator is added to the reaction mixture after substantial reaction of a carbonate precursor, a coupling catalyst is added to the reaction mixture after substantial reaction of the chain terminator, and base is added to the reaction mixture after reaction mixture after substantial reaction of the chain terminator in an amount sufficient to give a negative chloroformate test.

Abstract translation: 一种制备聚碳酸酯的方法，其中在碳酸酯前体显着反应之后将反应混合物加入到反应混合物中，将偶联催化剂加入到反应混合物中，在反应终了后，将反应混合物中的碱加入到反应混合物中 连续终止剂大量反应后，混合物的量足以产生负氯甲酸酯试验。

公开(公告)号：WO1994017985A1

公开(公告)日：1994-08-18

申请号：PCT/US1994001248

申请日：1994-02-02

Applicant: THE DOW CHEMICAL COMPANY

Inventor： THE DOW CHEMICAL COMPANY ,  MAHONEY, Robert, D. ,  KAWAMOTO, Jiro ,  LUNDGARD, Richard, A. ,  SONNENSCHEIN, Mark, F. ,  WAN, Hawk, S. ,  BECK, H., Nelson

IPC: B29C67/20

CPC classification number: B01D67/003 ,  B01D53/228 ,  B01D67/0011 ,  B01D67/0013 ,  B01D67/0018 ,  B01D67/0027 ,  B01D69/088 ,  B01D71/66 ,  B01D2323/20 ,  B01D2323/22 ,  B29C67/202 ,  C08J3/091 ,  C08J9/26 ,  C08J9/28 ,  C08J2201/046 ,  C08J2201/052 ,  C08J2201/0543 ,  C08J2201/0544 ,  C08J2201/0546 ,  C08J2381/02 ,  D01F6/765

Abstract: The invention relates to a process for preparing a microporous membrane from an unsulfonated poly(phenylene sulfide) polymer by forming a mixture of an unsulfonated poly(phenylene sulfide) polymer, an amorphous polymer, and optionally a plasticizer, heating the resulting mixture, extruding or optionally casting the mixture into a membrane, controlled cooling (quenching) or coagulating the membrane, and leaching the membrane, while optionally drawing the membrane before, during, and/or after leaching.

Abstract translation: 本发明涉及通过形成未磺化的聚（苯硫醚）聚合物，无定形聚合物和任选的增塑剂的混合物从未磺化聚（苯硫醚）聚合物制备微孔膜的方法，加热所得混合物，挤出或 任选地将混合物浇铸成膜，控制冷却（淬火）或凝结膜，并浸出膜，同时任选地在浸出之前，期间和/或之后拉伸膜。

公开(公告)号：WO1994017112A2

公开(公告)日：1994-08-04

申请号：PCT/US1994001052

申请日：1994-01-28

Applicant: THE DOW CHEMICAL COMPANY

Inventor： THE DOW CHEMICAL COMPANY ,  KOLTHAMMER, Brian, W., S. ,  CARDWELL, Robert, S.

IPC: C08F210/02

CPC classification number: C08F210/16 ,  C08F4/65908 ,  C08F4/65912 ,  C08F4/6592 ,  C08F10/02 ,  C08F110/02 ,  C08F297/08 ,  C08L23/0815 ,  C08L2205/02 ,  C08L2308/00 ,  C08L2314/02 ,  C08L2314/04 ,  C08L2314/06 ,  C08F4/6555 ,  C08F2/001 ,  C08L2666/04 ,  C08F210/14 ,  C08F2500/03 ,  C08F2500/08 ,  C08F2500/12 ,  C08F2500/06 ,  C08F2/34

Abstract: Processes for polymerizing ethylene/a-olefin interpolymer compositions are disclosed. The interpolymer compositions have a controlled composition and a controlled molecular weight distribution. The processes utilize a highly-efficient homogeneous catalyst composition in at least one reactor to produce a first interpolymer having a narrow composition distribution and a narrow molecular weight distribution, and a highly-efficient heterogeneous Ziegler catalyst in at least one other reactor. The reactors can be operated sequentially or separately, depending upon the desired product. The novel compositions have good optical properties (e.g., clarity and haze) and good physical properties (e.g., modulus, yield strength, toughness and tear). Useful products which can be formed from these compositions include film, molded articles and fiber.

Abstract translation: 公开了用于聚合乙烯/α-烯烃互聚物组合物的方法。 互聚物组合物具有受控的组成和受控的分子量分布。 该方法在至少一个反应器中使用高效均相催化剂组合物，以在至少一个其它反应器中产生具有窄组成分布和窄分子量分布的第一互聚物和高效异构齐格勒催化剂。 反应器可以顺序地或分开地操作，这取决于所需的产物。 该新型组合物具有良好的光学性质（例如透明度和雾度）和良好的物理性能（例如模量，屈服强度，韧性和撕裂）。 可以由这些组合物形成的有用的产品包括膜，模制品和纤维。

公开(公告)号：WO1994015773A1

公开(公告)日：1994-07-21

申请号：PCT/US1993011565

申请日：1993-12-01

Applicant: THE DOW CHEMICAL COMPANY

Inventor： THE DOW CHEMICAL COMPANY ,  BOWMAN, Reid, H. ,  ROCHEFORT, Willie, E. ,  LIU, Ming-Biann ,  PIERINI, Peter, E.

IPC: B29D07/01

CPC classification number: C08J5/18 ,  B29C71/0009 ,  B29D7/01 ,  B29K2079/00 ,  C08J2379/06

Abstract: Articles (other than fiber) made from polybenzazole dopes are quickly washed to remove polyphosphoric acid by a combination of initially washing with an acidic liquid and second washing with a hot leaching fluid at least 60 DEG C. The process can reach acceptable residual phosphorous levels (1500 to 2000 ppm) in as little as 2 or 3 minutes.

Abstract translation: 通过初次用酸性液体洗涤和用至少60℃的热浸出液进行第二次洗涤的组合，快速洗涤由聚吲唑制剂制成的制品（纤维以外），以除去多磷酸。该方法可达到可接受的残留磷水平 1500-2000ppm），只需2或3分钟。

公开(公告)号：WO1994015191A1

公开(公告)日：1994-07-07

申请号：PCT/US1993011560

申请日：1993-12-01

Applicant: THE DOW CHEMICAL COMPANY

Inventor： THE DOW CHEMICAL COMPANY ,  BROWING, Calvin, J. ,  MERCER, Carl, D. ,  MILLIGAN, William, S.

IPC: G01M03/22

CPC classification number: G01M3/04 ,  G01M3/223

Abstract: A gasket assembly with double spiral-wound gaskets and a middle draw-off port for leak detection in service with a process fluid featuring: 1) an inner primary seal spiral-wound gasket (14) with a high spring rate to hold the process fluid and pressure, 2) an outer secondary seal spiral-wound gasket (22) with a lower spring-rate to hold the process fluid temporarily while a new gasket is being installed, 3) inner and outer compression/gauge rings (12, 24) that allow compression of the spiral-wound gaskets to the proper thickness, and 4) a middle compression ring (16) between the two spiral-wound gaskets that also provides a groove (20) on each side in communication with a draw-off port (18) for monitoring leakage from the inner gasket.

Abstract translation: 具有双螺旋缠绕垫片的垫圈组件和用于泄漏检测的中间抽出口，用于处理流体，其特征在于：1）具有高弹簧刚度以保持过程流体的内部初级密封螺旋缠绕衬垫（14） 和压力，2）具有较低弹簧比的外部次级密封螺旋缠绕垫圈（22），用于在安装新垫圈的同时暂时保持工艺流体; 3）内部和外部压缩/测量环（12,24） 允许将螺旋缠绕的垫圈压缩到合适的厚度，以及4）在两个螺旋卷绕的垫圈之间的中间压缩环（16），其也在每一侧提供与抽出端口连通的凹槽（20） （18），用于监测内部垫圈的泄漏。