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    BIAXIALLY ORIENTED COPOLYESTER FILM FOR CAPACITOR DIELECTRIC USE OR THERMAL TRANSFER RIBBON USE.
    1.
    发明公开
    BIAXIALLY ORIENTED COPOLYESTER FILM FOR CAPACITOR DIELECTRIC USE OR THERMAL TRANSFER RIBBON USE. 失效
    双向ORIENTITETE COPOLYESTERFOLIEFÜRKONDENSATORDIELEKTRIKUM ODER THERMISCHESÜBERTRAGUNGSBAND。

    公开(公告)号：EP0671990A4

    公开(公告)日：1995-08-01

    申请号：EP93902640

    申请日：1992-12-09

    Applicant: HOECHST AG

    Inventor： BENNETT CYNTHIA DR ,  CHOE E-WON ,  FLINT JOHN ANTHONY ,  KUHMANN BODO

    IPC: C08J5/18 ,  B29C55/02 ,  B29C55/12 ,  B29D7/01 ,  B29K67/00 ,  B29L7/00 ,  B32B5/16 ,  B32B27/20 ,  B32B27/36 ,  C08K3/00 ,  C08K3/26 ,  C08K3/30 ,  C08L67/00 ,  C08L67/02 ,  H01G4/18 ,  B32B3/10 ,  B32B27/06

    CPC classification number: C08J5/18 ,  B29C55/12 ,  B29D7/01 ,  B29K2067/00 ,  C08J2367/02 ,  C08K3/01 ,  C08K2201/016 ,  H01G4/18 ,  C08L67/02

    Abstract: The present invention comprises a biaxially oriented copolyester film useful for capacitor dielectrics or thermal transfer printing ribbons. Such films have good winding characteristics, slipperiness, good mechanical properties (stiffness and strength), and excellent thermal stability. The biaxially oriented copolyester film has at least 25 mole percent of the dicarboxylic acid or its ester equivalent content in the copolyester of 4,4'-bibenzoic acid. The remainder of the copolyester is such that the melting point is about 260 DEG C such that the copolyester is capable of withstanding a thermal treatment of 260 DEG C for about 10 seconds. The biaxially oriented copolyester film also includes an effective amount of fillers having a bimodal particle distribution sufficient to provide slip and good winding characteristics such as those that are known in the art. The bimodal particle distribution generally should comprise: (a) fine particles having an average particle diameter of 3 to 50 nm and employed in the range of from about 0.01 to about 3 percent by weight based on weight of the copolyester, and (b) a large particle distribution having an average particle diameter of 0.05 to 4 mu m and an aspect ratio of from 1.0 to 1.2 and being employed in the range of 0.005 to 1 percent by weight based on the weight of the copolyester.

    Abstract translation: 本发明包括用于电容器电介质或热转移印刷带的双轴取向的共聚酯膜。 这种膜具有良好的缠绕特性，光滑性，良好的机械性能（刚度和强度）以及优异的热稳定性。 双链取向的共聚酯膜在4,4'-联苯甲酸的共聚酯中具有至少25摩尔％的二羧酸或其酯当量含量。 共聚酯的其余部分使得熔点为约260℃，使得共聚酯能够耐受260℃的热处理约10秒。 双轴取向的共聚酯膜还包括有效量的填充剂，其具有足以提供滑动和良好缠绕特性的双峰颗粒分布，例如本领域已知的那些。 双峰颗粒分布通常应包括：（a）平均粒径为3至50nm并基于共聚酯重量的约0.01至约3重量％的细颗粒，和（b） 平均粒径为0.05〜4μm，长径比为1.0〜1.2，相对于共聚聚酯的重量，为0.005〜1重量％的粒子分布。

    3.
    发明专利
    未知

    公开(公告)号：DE4127603A1

    公开(公告)日：1993-02-25

    申请号：DE4127603

    申请日：1991-08-21

    Applicant: HOECHST AG

    Inventor： BENNETT CYNTHIA DR ,  ROTH WERNER DR

    IPC: B29C41/12 ,  C08G69/32 ,  C08J5/18

    Abstract: According to a process for manufacturing high-resistance foils made of aromatic copolyamides, (a) a solution of an aromatic copolyamid is at first prepared; (b) this solution is poured on a solid substrate; (c) the poured foil is pre-dried in order to remove part of the solvent; (d) coagulation is carried out in a precipitating agent; and (e) the foil is finally dried in order to remove the coagulating agent and the residual amide solvent. This process is characterized in that the dimension retention factor D in the longitudinal and/or transverse direction is greater than or equal to 0.9 during process steps (c), (d) and (e).

    Biaxially orientated polyester sheet
    4.
    发明专利
    Biaxially orientated polyester sheet 未知

    公开(公告)号：DE4238128A1

    公开(公告)日：1994-05-19

    申请号：DE4238128

    申请日：1992-11-12

    Applicant: HOECHST AG

    Inventor： BENNETT CYNTHIA DR ,  KUHMANN BODO ,  WARD BENNETT DR ,  CHOE E-WON DR ,  FLINT JOHN ANTHONY DR

    IPC: C08G63/185 ,  C08G63/189 ,  C08J5/18 ,  G11B5/73 ,  C08L67/02 ,  B32B27/36 ,  B63H9/06 ,  B65D65/38 ,  B65D57/00 ,  B41J5/10 ,  H01F27/32 ,  H02K3/30 ,  H05K1/03 ,  G05G1/02 ,  G11B5/62

    Abstract: A single or multilayer biaxially oriented sheet of total thickness 0.05-500 microns, contg. a copolyester that contains as the dicarboxylic acid repeating unit as structural unit of formula (I) at least 25 mol.% is claimed. Also claimed are: (i) a single or mulitlayer biaxially oriented sheet of total thickness 0.05-500 microns, whereby at least one layer of the sheet comprises a polymer with repeating unit -(A-B)- and 0-10 wt.% additives whereby (A) and (B) are present in approx. equal molar quantities. (A) is 1-99 mol.% structural units of formula (II) and 99-1 mol.% structural units of formula (I) and 0-10 mol.% of one or more structural units (A') of formula (IV)-(IX) and 1-6C alkyl dicarboxylic acids with the proviso that the sum of (II), (I) and (A') does not exceed 100 mol.%. (B) is 90-100 mol.% structural units of formula (III) and 0-1- mol.% one or more structural units (B') of formula (X)-(XII) and 0-10 mol.% structural units of formula (XIII)-(XV) and 1-6C hydroxy alkyl carboxylic acids. (ii) prepn. of a biaxially oriented sheet by (a) extrusion of (I) and 0-10 wt.% additives or opt. co-extrusion together with one or more layers, (b) simultaneous or subsequent stretch(es) parallel and/or orthogonal to the direction of travel and (c) subsequent thermofixing. The copolyester contains a structural repeating unit of formula (I) as well as units of formula (II) and/or (XVI) with (I) accounting for at least 25 mol.% of the repeating units. The copolyester contains less than 10 mol.% (VXI) and more than 5 mol.% (II). n = 2. The aromatic ring system is mono, di or greater substd. with 1-6C alkyl halogen, CN, NO2, CF3, 1-5C alkoxy and phenyl. The inherent viscosity of the copolyester is greater than or equal to 0.2 dl/g (0.1 g/ml in 1:1 perfluorophenol-hexafluoro:isopropanol, 25 deg. C.). One or more of the layers contain 0.01-1 wt.% particles (0.001-10 microns), pref. kaolin, talc, SiO2, MgCO3, CaCO3, BuCO3, CaSO4, BuSO4, Li3PO4, Ca3(PO4)2, Mg3(PO4)2, Al2O3, LiF, Ca-, Bu-, Zn-, Mn- salts of terephthalic acid and/or carbon. The sheet is flat or tube shaped (density 1.28-1.37 g/cu3) and is thermofixed. The double refraction (Sn) is less than 0.2 and the intrinsic viscosity of polyethylene-naphthalate bibenzoate (PENBB) is greater than 0.5 dl/g. The sheet is crystalline and has a melting temp. in the range 270-360 deg. C., a combined E modulus value (lengthwise and across) of greater than 10 GPa and a glass transition temp. of at least 120 deg. C. The sheet is in single layer and containts processing aids and/or lubricants at upto 1%.

    Biaxially orientated polyester sheet
    7.
    发明专利
    Biaxially orientated polyester sheet 未知

    公开(公告)号：DE4224161A1

    公开(公告)日：1994-01-27

    申请号：DE4224161

    申请日：1992-07-22

    Applicant: HOECHST AG

    Inventor： BENNETT CYNTHIA DR ,  KUHMANN BODO ,  WARD BENNETT DR ,  CHOE E-WON DR ,  FLINT JOHN ANTHONY DR

    IPC: C08G63/185 ,  C08G63/189 ,  C08J5/18 ,  G11B5/73 ,  C08L67/02 ,  B32B27/36 ,  H01G4/18 ,  B63H9/06 ,  B65D65/40

    Abstract: A single or multilayer biaxially oriented sheet of total thickness 0.05-500 microns, contg. a copolyester that contains as the dicarboxylic acid repeating unit as structural unit of formula (I) at least 25 mol.% is claimed. Also claimed are: (i) a single or mulitlayer biaxially oriented sheet of total thickness 0.05-500 microns, whereby at least one layer of the sheet comprises a polymer with repeating unit -(A-B)- and 0-10 wt.% additives whereby (A) and (B) are present in approx. equal molar quantities. (A) is 1-99 mol.% structural units of formula (II) and 99-1 mol.% structural units of formula (I) and 0-10 mol.% of one or more structural units (A') of formula (IV)-(IX) and 1-6C alkyl dicarboxylic acids with the proviso that the sum of (II), (I) and (A') does not exceed 100 mol.%. (B) is 90-100 mol.% structural units of formula (III) and 0-1- mol.% one or more structural units (B') of formula (X)-(XII) and 0-10 mol.% structural units of formula (XIII)-(XV) and 1-6C hydroxy alkyl carboxylic acids. (ii) prepn. of a biaxially oriented sheet by (a) extrusion of (I) and 0-10 wt.% additives or opt. co-extrusion together with one or more layers, (b) simultaneous or subsequent stretch(es) parallel and/or orthogonal to the direction of travel and (c) subsequent thermofixing. The copolyester contains a structural repeating unit of formula (I) as well as units of formula (II) and/or (XVI) with (I) accounting for at least 25 mol.% of the repeating units. The copolyester contains less than 10 mol.% (VXI) and more than 5 mol.% (II). n = 2. The aromatic ring system is mono, di or greater substd. with 1-6C alkyl halogen, CN, NO2, CF3, 1-5C alkoxy and phenyl. The inherent viscosity of the copolyester is greater than or equal to 0.2 dl/g (0.1 g/ml in 1:1 perfluorophenol-hexafluoro:isopropanol, 25 deg. C.). One or more of the layers contain 0.01-1 wt.% particles (0.001-10 microns), pref. kaolin, talc, SiO2, MgCO3, CaCO3, BuCO3, CaSO4, BuSO4, Li3PO4, Ca3(PO4)2, Mg3(PO4)2, Al2O3, LiF, Ca-, Bu-, Zn-, Mn- salts of terephthalic acid and/or carbon. The sheet is flat or tube shaped (density 1.28-1.37 g/cu3) and is thermofixed. The double refraction (Sn) is less than 0.2 and the intrinsic viscosity of polyethylene-naphthalate bibenzoate (PENBB) is greater than 0.5 dl/g. The sheet is crystalline and has a melting temp. in the range 270-360 deg. C., a combined E modulus value (lengthwise and across) of greater than 10 GPa and a glass transition temp. of at least 120 deg. C. The sheet is in single layer and containts processing aids and/or lubricants at upto 1%.

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