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    STRENGTHENED CORDIERITE HAVING MINOR AMOUNTS OF CALCIA
    242.
    发明申请
    STRENGTHENED CORDIERITE HAVING MINOR AMOUNTS OF CALCIA 审中-公开
    加强了具有CALCIA的微量元素的CORDIERITE

    公开(公告)号：WO1988008413A1

    公开(公告)日：1988-11-03

    申请号：PCT/US1988001346

    申请日：1988-04-21

    Applicant: THE DOW CHEMICAL COMPANY

    Inventor： THE DOW CHEMICAL COMPANY ,  PRUNIER, Arthur R., Jr.

    IPC: C04B35/04

    CPC classification number: C04B35/195

    Abstract: Synthetic raw materials are used to prepare a sintered refractory body consisting essentially of cordierite having 47.5 to 56 weight percent SiO2, 31 to 40 weight percent Al2O3, 12 to 19 weight percent MgO, and 0.15 to 1 weight percent CaO, the body having a flexural strength of at least 138 MPa (20,000 psi). The cordierite body, with respect to impurities, has less than 0.3 weight percent total alkaline earth metal oxides other than MgO and CaO, less than 250 ppm Na2O, less than 150 ppm K2O and less than 500 ppm transition metals on the oxide basis. Thus, the cordierite of the invention has very low impurity levels yet good sinterability and, hence, high strength.

    PIEZOELECTRIC/PYROELECTRIC ELEMENTS AND A PROCESS FOR MAKING SAME
    245.
    发明申请
    PIEZOELECTRIC/PYROELECTRIC ELEMENTS AND A PROCESS FOR MAKING SAME 审中-公开
    压电/电子元件及其制造方法

    公开(公告)号：WO1988004475A1

    公开(公告)日：1988-06-16

    申请号：PCT/US1986002650

    申请日：1986-12-08

    Applicant: THE DOW CHEMICAL COMPANY

    Inventor： THE DOW CHEMICAL COMPANY ,  IM, Jang-Hi

    IPC: H01L41/08

    CPC classification number: H01L41/333 ,  H01L37/02 ,  H01L41/27 ,  H01L41/45 ,  Y10S310/80 ,  Y10T29/42

    Abstract: Multi-layer piezoelectric/pyroelectric elements and methods of manufacturing these elements. Producing multi-layer devices required many steps such as laminating. Laminating processes often resulted in undesirable short circuiting of the elements. To solve the problem, layers using polymeric electrode material layers (12, 14) between the piezoelectric/pyroelectric materials (10) are coextruded. The electrode material is only exposed along one edge (13, 15) of the element thereby eliminating short circuiting problems.

    Abstract translation: 多层压电/热电元件和制造这些元件的方法。 生产多层设备需要许多步骤，如层压。 层压过程通常导致元件的不期望的短路。 为了解决这个问题，在压电/热电材料（10）之间使用聚合物电极材料层（12,14）的层被共挤出。 电极材料仅沿元件的一个边缘（13,15）暴露，从而消除短路问题。

    CATIONIC, ADVANCED EPOXY RESIN COMPOSITIONS
    246.
    发明申请
    CATIONIC, ADVANCED EPOXY RESIN COMPOSITIONS 审中-公开
    阳离子，高级环氧树脂组合物

    公开(公告)号：WO1988000600A1

    公开(公告)日：1988-01-28

    申请号：PCT/US1987001690

    申请日：1987-07-16

    Applicant: THE DOW CHEMICAL COMPANY

    Inventor： THE DOW CHEMICAL COMPANY ,  ANDERSON, Kenneth, W. ,  HICKNER, Richard, A. ,  RAO, Nancy, A.

    IPC: C08G59/14

    CPC classification number: C08G59/1433 ,  C08G59/066 ,  C08G59/226 ,  C09D5/443 ,  C09D5/4434 ,  C09D163/00

    Abstract: An advanced epoxy cationic resin having a charge density of from 0.2 to 0.6 milliequivalent of cationic charge per gram of resin is prepared by reacting in the presence of a suitable catalyst (A) a composition comprising (1) at least one diglycidyl ether of a polyol and (2) at least one diglycidyl ether of a dihydric phenol with (B) at least one dihydric phenol and optionally (C) a monofunctional capping agent. Components (A-1) and (A-2) are employed in quantities such that from 10 to 75 weight percent of the diglycidyl ethers contained in component (A) are contributed by component (A-1), and from 25 to 90 weight percent of such glycidyl ethers are contributed by component (A-2). Components (A) and (B) are employed in such quantities that the resultant epoxy resin has an average epoxide equivalent weight of from 350 to 10,000. The terminal oxirane groups in thus formed advanced epoxy resin are converted to cationic groups by reacting the resin with a nucleophilic compound and adding an organic acid and water at at least one point in the reaction. Process for the preparation of these advanced epoxy cationic resins is also disclosed. Advanced epoxy cationic resin of this invention are employed in the preparation of coating compositions suitable for electrodeposition.

    Abstract translation: 通过在合适的催化剂（A）存在下反应制备电荷密度为每克树脂0.2至0.6毫当量阳离子电荷的高级环氧阳离子树脂，该组合物包含（1）至少一种多元醇的二缩水甘油醚 和（2）至少一种二元酚的二缩水甘油醚与（B）至少一种二元酚和任选的（C）单官能封端剂。 组分（A-1）和（A-2）的用量使得组分（A）中包含的10至75重量％的二缩水甘油醚由组分（A-1）和25至90重量份 这种缩水甘油醚的百分比由组分（A-2）贡献。 组分（A）和（B）的用量使所得环氧树脂的平均环氧当量为350至10,000。 这样形成的先进环氧树脂中的末端环氧乙烷基团通过使树脂与亲核化合物反应并在反应中至少一点加入有机酸和水而转化为阳离子基团。 还公开了制备这些高级环氧阳离子树脂的方法。 本发明的高级环氧阳离子树脂用于制备适用于电沉积的涂料组合物。

    METHOD OF PURIFYING 3-CHLORO-2-HYDROXYPROPYL TRIALKYLAMMONIUM CHLORIDE
    247.
    发明申请
    METHOD OF PURIFYING 3-CHLORO-2-HYDROXYPROPYL TRIALKYLAMMONIUM CHLORIDE 审中-公开
    3-氯代-2-羟基丙基氯仿氯化锂的纯化方法

    公开(公告)号：WO1988000582A1

    公开(公告)日：1988-01-28

    申请号：PCT/US1986001500

    申请日：1986-07-21

    Applicant: THE DOW CHEMICAL COMPANY

    Inventor： THE DOW CHEMICAL COMPANY ,  TASSET, Emmett, L.

    IPC: C07C89/04

    CPC classification number: C07C213/10 ,  C07C215/40

    Abstract: Method of purifying 3-chloro-2-hydroxypropyl trialkylammonium chloride. An aqueous slurry is prepared containing from 70 to 98 weight percent total solids including the chloride and impurities associated with the preparation thereof. To this slurry is then added a miscible alcohol having from 3 to 4 carbon atoms. A solid filtrate is collected and optionally washed with additional alcohol and dried. The solid filtrate is substantially more pure in the chloride than the starting material.

    Abstract translation: 纯化3-氯-2-羟丙基三烷基氯化铵的方法。 制备的含水浆液含有70至98重量％的总固体，包括氯化物和与其制备相关的杂质。 然后向该浆液中加入具有3至4个碳原子的可混溶的醇。 收集固体滤液，任选地用另外的醇洗涤并干燥。 固体滤液在氯化物中比起始原料基本上更纯净。

    PROCESS FOR CONVERTING A THERMOPLASTIC POLYMER INTO SPHEROIDAL AGGLOMERATED GRANULES
    250.
    发明申请
    PROCESS FOR CONVERTING A THERMOPLASTIC POLYMER INTO SPHEROIDAL AGGLOMERATED GRANULES 审中-公开
    将热塑性聚合物转化成SPHEROIDAL AGGLOLATED GRANULES的方法

    公开(公告)号：WO1987004637A1

    公开(公告)日：1987-08-13

    申请号：PCT/US1986000192

    申请日：1986-01-31

    Applicant: THE DOW CHEMICAL COMPANY

    Inventor： THE DOW CHEMICAL COMPANY ,  WALKO, Lee, E. ,  SWANSON, Norman ,  WALLACE, Stephen, B. ,  COOK, Roy, M.

    IPC: B01D01/18

    CPC classification number: B01D1/18 ,  C08J3/14

    Abstract: Thermoplastic polymers in solutions of organic solvents are converted to granules of relatively uniform sizes and a narrow distribution range by passing the polymer solution through a jet nozzle (52) to form a high velocity stream, injecting super heated steam into the high velocity stream to form a suspension of fine polymer particulates in a gas stream, passing the suspension into a uniformly heated serpentine agglomeration tube (16) having a series of at least 6 semi-circular turns (30, 32, 34) wherein the particulates are substantially completely agglomerated into granules and the granules are separated from the gas stream.

    Abstract translation: 将有机溶剂溶液中的热塑性聚合物通过使聚合物溶液通过喷嘴（52）而转变成尺寸相对均匀且分布范围窄的颗粒，形成高速流，将超加热蒸汽注入高速流中以形成 将细聚合物颗粒悬浮在气流中，使悬浮液通过具有一系列至少6个半圆形匝（30,32,34）的均匀加热的蛇形结块凝结管（16），其中所述颗粒基本上完全凝聚成 颗粒和颗粒与气流分离。

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