中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

281 records (took 0.029 seconds)

    PROCESS FOR THE PREPARATION OF THERMOTROPIC AROMATIC POLYESTERS DIRECTLY FROM DIALKYL AROMATIC ESTERS
    1.
    发明申请
    PROCESS FOR THE PREPARATION OF THERMOTROPIC AROMATIC POLYESTERS DIRECTLY FROM DIALKYL AROMATIC ESTERS 审中-公开
    从直立芳香酯直接制备热稳定性芳族聚酯的方法

    公开(公告)号：WO1998014501A1

    公开(公告)日：1998-04-09

    申请号：PCT/US1997014268

    申请日：1997-08-13

    Applicant: HOECHST CELANESE CORPORATION

    Inventor： HOECHST CELANESE CORPORATION ,  GUPTA, Balaram ,  BYLICKI, Matthew, J.

    IPC: C08G63/60

    CPC classification number: C08G63/605 ,  C08G63/78 ,  C08G63/82 ,  C08G69/44

    Abstract: A process is provided for the formation of aromatic polyesters directly from the reaction of dialkyl ester of an aromatic carboxylic acid with dihydric phenols. The polycondensation is carried out in the presence of (a) a condensing agent; (b) a catalyst selected from the group consisting of derivatives of Group I metals, derivatives of Group IV A metals, derivatives of Group IV B metals, and mixtures thereof; and (c) a co-catalyst selected from the group consisting of methanesulfonic acid, sulfuric acid, p-toluenesulfonic acid, alkanoic acid having the formula CnHxFyCOOH, where n is an integer from 1 to 4, x and y are integers from 0 to 2n+1, and the sum of x and y is 2n+1, and mixtures thereof; at suitable temperatures and pressure conditions and for sufficient period of time to form the aromatic polyester.

    Abstract translation: 提供了直接由芳族羧酸与二元酚的二烷基酯反应形成芳族聚酯的方法。 缩聚在（a）缩合剂存在下进行; （b）选自I族金属的衍生物，IV族金属的衍生物，IVB族金属的衍生物及其混合物的催化剂; 和（c）选自甲磺酸，硫酸，对甲苯磺酸，具有式C n H x F y COOH的链烷酸，其中n为1至4的整数的助催化剂，x和y为0至 2n + 1，x和y的和为2n + 1，以及它们的混合物; 在合适的温度和压力条件下和足够的时间以形成芳族聚酯。

    METHOD OF PRIMING POLYOLEFIN ARTICLES FOR COATING
    2.
    发明申请
    METHOD OF PRIMING POLYOLEFIN ARTICLES FOR COATING 审中-公开
    制备用于涂料的聚烯烃制品的方法

    公开(公告)号：WO1997047678A1

    公开(公告)日：1997-12-18

    申请号：PCT/US1997010073

    申请日：1997-06-06

    Applicant: HOECHST CELANESE CORPORATION

    Inventor： HOECHST CELANESE CORPORATION ,  HUBBARD, Michael, A. ,  McCAULLEY, James, A. ,  HOLCOMB, Douglas, R.

    IPC: C08J07/04

    CPC classification number: C08J7/045 ,  C08J7/047 ,  C08J2323/02 ,  C08J2425/00 ,  C08J2429/00

    Abstract: A method for providing a waterborne, inorganic barrier coating to a polyolefin substrate is described. The method involves applying a primer composition containing a vinyl polymer, wherein at least 75 % of the polymer repeat units contain side groups having hydroxyl moieties, to the substrate. This primer coating facilitates the application and binding of the subsequently applied barrier coating composition to the substrate.

    Abstract translation: 描述了一种向聚烯烃基材提供水性无机阻隔涂层的方法。 该方法包括将含有乙烯基聚合物的底漆组合物，其中至少75％的聚合物重复单元含有具有羟基部分的侧基。 该底涂层有助于随后施加的阻挡涂层组合物与基底的应用和结合。

    LIGHT-ABSORBING ANTIREFLECTIVE LAYERS WITH IMPROVED PERFORMANCE DUE TO REFRACTIVE INDEX OPTIMIZATION
    4.
    发明申请
    LIGHT-ABSORBING ANTIREFLECTIVE LAYERS WITH IMPROVED PERFORMANCE DUE TO REFRACTIVE INDEX OPTIMIZATION 审中-公开
    具有改进性能的光吸收抗反射层由于折射率优化

    公开(公告)号：WO1997033200A1

    公开(公告)日：1997-09-12

    申请号：PCT/US1997003754

    申请日：1997-03-06

    Applicant: HOECHST CELANESE CORPORATION

    Inventor： HOECHST CELANESE CORPORATION ,  DAMMEL, Ralph, R. ,  NORWOOD, Robert, A.

    IPC: G03F07/09

    CPC classification number: G03F7/091

    Abstract: The invention consists of a light-absorbing top antireflective layer which reduces the swing curve amplitude for photoresist materials used in the semiconductor industry. The coating may be water based but is not necessarily so. The advantage of a water-based coating is its ease of use, since it can be applied without intermixing to the softbaked photoresist, and is removed in the development step, so that process complexity is only minimally increased. One problem that has been associated with the existing non-absorbing antireflective coatings is that the optimum swing curve reduction is only achieved at a very low refractive index. The advantages of a dyed coating are: a) that the refractive index of the top coat can additionally be lowered by making use of anomalous dispersion effects if the dye is chosen judiciously, and b) that it is possible to achieve the optimum swing curve reduction at a higher refractive index of the top coat. By a combination of these two effects, the present invention demonstrates a reduction of the swing curve close to the theoretical minimum value, which constitutes a substantial improvement over existing antireflective topcoats.

    Abstract translation: 本发明包括一种吸收性的顶部抗反射层，其减少半导体工业中使用的光致抗蚀剂材料的摆动曲线幅度。 涂层可以是水性的，但不一定如此。 水性涂​​料的优点是其易于使用，因为它可以在不与软烘烤的光致抗蚀剂混合的情况下进行应用，并且在显影步骤中被去除，使得仅仅最小程度地提高了工艺复杂性。 与现有的非吸收性抗反射涂层相关联的一个问题是仅在非常低的折射率下实现最佳摆动曲线减小。 染色涂层的优点是：a）如果染色被明智地选择，则可以通过利用异常色散效应来额外降低顶涂层的折射率，以及b）可以实现最佳摆动曲线减小 在顶涂层的较高折射率下。 通过这两种效果的组合，本发明证明了接近理论最小值的摆动曲线的减小，这相对于现有的抗反射面漆构成了实质的改进。

    THERMOPLASTIC POLYMER COMPOSITION WITH IMPROVED WEAR PROPERTIES
    5.
    发明申请
    THERMOPLASTIC POLYMER COMPOSITION WITH IMPROVED WEAR PROPERTIES 审中-公开
    具有改进磨损特性的热塑性聚合物组合物

    公开(公告)号：WO1997031055A1

    公开(公告)日：1997-08-28

    申请号：PCT/US1996002591

    申请日：1996-02-26

    Applicant: HOECHST CELANESE CORPORATION

    Inventor： HOECHST CELANESE CORPORATION ,  FORSCHIRM, Alex

    IPC: C08K05/10

    CPC classification number: C08L59/00 ,  C08L23/00 ,  C08L101/00 ,  C08L2555/40 ,  C08L2666/04

    Abstract: A self-lubricating polymeric composition, characterized as a melt blend of a thermoplastic polymer and a lubricating system containing ultra high molecular weight polyethylenes, a polyester, acid metal salts, calcium salts, antioxidants and stabilizers. The composition may be prepared into shaped articles which exhibit improved surface wear resistance and coefficients of friction.

    Abstract translation: 一种自润滑聚合物组合物，其特征在于热塑性聚合物和含有超高分子量聚乙烯，聚酯，酸金属盐，钙盐，抗氧化剂和稳定剂的润滑体系的熔体共混物。 组合物可以制备成具有改善的表面耐磨性和摩擦系数的成型制品。

    ACIDIC ION EXCHANGE RESIN AS A CATALYST TO SYNTHESIZE A NOVOLAK RESIN AND PHOTORESIST COMPOSITION THEREFROM
    6.
    发明申请
    ACIDIC ION EXCHANGE RESIN AS A CATALYST TO SYNTHESIZE A NOVOLAK RESIN AND PHOTORESIST COMPOSITION THEREFROM 审中-公开
    ACIDIC离子交换树脂作为催化剂合成NOVOLAK树脂和其中的光电组合物

    公开(公告)号：WO1997025359A1

    公开(公告)日：1997-07-17

    申请号：PCT/US1996020165

    申请日：1996-12-17

    Applicant: HOECHST CELANESE CORPORATION

    Inventor： HOECHST CELANESE CORPORATION ,  RAHMAN, M., Dalil ,  AUBIN, Daniel, P. ,  KOKINDA, Elaine, G. ,  DURHAM, Dana, L.

    IPC: C08G08/10

    CPC classification number: C08G8/10 ,  G03F7/0236

    Abstract: The present invention provides methods for producing water insoluble, aqueous alkali soluble novolak resins having consistent molecular weight and a very low level of metal ions, utilizing a solid acid condensation catalyst. A method is also provided for producing photoresist composition having a very low level of metal ions from such novolak resins and for producing semiconductor devices using such photoresist compositions.

    Abstract translation: 本发明提供了利用固体酸缩合催化剂生产具有一致分子量和非常低水平的金属离子的水不溶性水溶性酚醛清漆树脂的方法。 还提供了一种用于生产具有来自这种酚醛清漆树脂的非常低水平的金属离子并且使用这种光致抗蚀剂组合物制造半导体器件的光致抗蚀剂组合物的方法。

    POLY(PHENYLENE SULFIDE) COMPOSITES HAVING A HIGH DIELECTRIC CONSTANT
    8.
    发明申请
    POLY(PHENYLENE SULFIDE) COMPOSITES HAVING A HIGH DIELECTRIC CONSTANT 审中-公开
    具有高介电常数的聚（苯乙烯）复合材料

    公开(公告)号：WO1997020324A1

    公开(公告)日：1997-06-05

    申请号：PCT/US1996018658

    申请日：1996-11-22

    Applicant: HOECHST CELANESE CORPORATION

    Inventor： HOECHST CELANESE CORPORATION ,  WALPITA, Lak, M. ,  CHEN, Paul, N., Sr. ,  ZIPP, Christopher ,  HANLEY, Stephen, J.

    IPC: H01B03/30

    CPC classification number: H01B3/301 ,  C08K3/24 ,  H05K1/0333 ,  H05K1/0373 ,  H05K1/16 ,  C08L81/02

    Abstract: Polymeric compositions having a high dielectric constant and low loss tangent are made from poly(phenylene sulfide), a ceramic having a high dielectric constant and a low loss tangent, and optionally an added reinforcing filler. The preferred ceramic is strontium titanate. The compositions have a dielectric constant of at least about 4. When mica, alumina, or magnesium titanate is used as an added reinforcing filler, the coefficient of thermal expansion diminishes significantly.

    Abstract translation: 具有高介电常数和低损耗角正切的聚合物组合物由具有高介电常数和低损耗角正切的陶瓷和可选地添加的增强填料的聚苯硫醚制成。 优选的陶瓷是钛酸锶。 组合物具有至少约4的介电常数。当使用云母，氧化铝或钛酸镁作为添加的增强填料时，热膨胀系数显着降低。

    POLARIZER FILMS COMPRISING AROMATIC LIQUID CRYSTALLINE POLYMERS COMPRISING DICHROIC DYES IN THEIR MAIN CHAINS
    10.
    发明申请
    POLARIZER FILMS COMPRISING AROMATIC LIQUID CRYSTALLINE POLYMERS COMPRISING DICHROIC DYES IN THEIR MAIN CHAINS 审中-公开
    包含在主链中包含二色染料的芳香族液晶聚合物的极化膜

    公开(公告)号：WO1997019374A1

    公开(公告)日：1997-05-29

    申请号：PCT/US1996017057

    申请日：1996-10-24

    Applicant: HOECHST CELANESE CORPORATION

    Inventor： HOECHST CELANESE CORPORATION ,  SHEN, Sunny, S. ,  YOON, Hyun, N. ,  TIEN, Tze-Pei ,  POLIS, David, W.

    IPC: G02B05/30

    CPC classification number: G02B5/3033

    Abstract: This invention provides novel liquid crystalline polymers which comprise, in the repeat units of their main chains, residues of suitable dichroic dyes. The polymers yield polarizer films with superior polarizing efficiency, transmittance, dichroic ratio, and thermal and humidity stability. The invention further discloses suitable processes to prepare such polymers and polarizer films therefrom.

    Abstract translation: 本发明提供了新的液晶聚合物，它们在其主链的重复单元中包含合适的二色性染料的残基。 该聚合物产生具有优异的偏振效率，透光率，二向色比和热湿稳定性的偏振片。 本发明进一步公开了制备这种聚合物和偏振膜的合适方法。

Patent Agency Ranking