1.
    发明专利
    未知

    公开(公告)号:DE60136339D1

    公开(公告)日:2008-12-11

    申请号:DE60136339

    申请日:2001-11-28

    Abstract: A polyester composition includes a ligand capable of coordinating to a metal or metal ion, wherein the ligand includes at least one donor atom selected from the group consisting of a nitrogen atom, a sulfur atom, and an oxygen atom. Consequently, it is possible to inactivate a metal catalyst which adversely affects heat resistance. As a result, it is possible to obtain polyester compositions and films having excellent heat resistance, colorability, and weathering resistance. Moreover, in the process of producing a polyester, by separating and recovering a catalyst by adding a ligand which is capable of coordinating to a metal or metal ion and which includes at least one donor atom selected from the group consisting of a nitrogen atom, a sulfur atom, and an oxygen atom, it is possible to improve the heat resistance of the polyester composition.

    POLYESTER RESIN COMPOSITION, PROCESS FOR PRODUCING THE SAME, AND POLYESTER FILM
    3.
    发明公开
    POLYESTER RESIN COMPOSITION, PROCESS FOR PRODUCING THE SAME, AND POLYESTER FILM 审中-公开
    聚酯树脂组合物及其制造方法聚酯薄膜

    公开(公告)号:EP1767561A4

    公开(公告)日:2013-06-12

    申请号:EP05743561

    申请日:2005-05-24

    CPC classification number: C08L67/02

    Abstract: A polyester resin composition having an equivalent spherical diameter of 1 mm to 50 mm, a degree of crystallization of not less than 65% and less than 99%, an intrinsic viscosity of not more than 0.7 dl/g and a cyclic trimer content of not more than 0.4% by weight. This polymer resin composition has an excellent color tone, causes no significant viscosity lowering or viscosity rise, and can withstand a process which is exposed to a long-term thermal history. A polyester resin composition having a viscosity suitable for extrusion in a general-purpose manner, a production process thereof, and a polyester film are also provided.

    POLYESTER COMPOSITION, FILM MADE THEREOF AND MAGNETIC RECORDING MEDIUM

    公开(公告)号:JP2001323140A

    公开(公告)日:2001-11-20

    申请号:JP2000142868

    申请日:2000-05-16

    Abstract: PROBLEM TO BE SOLVED: To provide a polyester composition and a polyester film hardly causing bleedout and other problems encountered in a conventional method in which an additive is employed, excellent in molding properties and sliding properties and suitably employed for applications as a magnetic recording medium in particular. SOLUTION: The polyester composition is composed mainly of a polyester and has a peak ratio B of at least 5×10-3 and at most 500×10-3 and a (peak ratio B) to (peak ratio A) ratio of at least 0.7, where the peak ratio A is a quotient of a peak area within 1-3 ppm divided by a peak area within 4-6 ppm when the polyester composition is observed by the proton NMR and the peak ratio B is a quotient of a peak area within 1-3 ppm divided by a peak area within 4-6 ppm when a polyester composition, obtained by dissolving the polyester composition in a solvent and subsequently re-precipitating by diluting with toluene, is observed by the proton NMR.

    MICROPOROUS MEMBERANE AND METHOD FOR MANUFACTURING THE SAME

    公开(公告)号:JPH06182168A

    公开(公告)日:1994-07-05

    申请号:JP35552592

    申请日:1992-12-17

    Abstract: PURPOSE:To provide a microporous membrane which maintains adequate durabil ity under hard conditions such as solvent separation/recovery, treatment of organic vapor and high-temperature liquid, thermal sterilization and chlorine sterilization of bacteria and alkali cleaning and can be used as a support of composite reverse osmosis membrane or a gas separation membrane as well as a method for manufacturing said microporous membrane. CONSTITUTION:The microporous membrane consists mainly of a polymer expressed in the repetitive unit of formula-(Ph-S)m-(Ph-SO2)n-(in the formula, Ph is a phenylene group; m,n are a natural number). In this membrane manufacture, an aprotic polar organic solvent is used as a solvent of polymer, which consists of 0.5 to 20wt% of lithium salt of monobasic acid for dissolving the polymer.

    POLYESTER COMPOSITION AND FILM
    8.
    发明专利

    公开(公告)号:JP2003096280A

    公开(公告)日:2003-04-03

    申请号:JP2001293438

    申请日:2001-09-26

    Abstract: PROBLEM TO BE SOLVED: To provide a polyester composition which is reduced in a polymer gel compound generated upon melt extrusion, and which has excellent heat resistance and film forming property, and also to provide a film. SOLUTION: An alkali metal amount: Am (mol/ton), an alkaline earth metal amount: Em (mol/ton), an a phosphor element amount: Pm (mol/ton), contained in a polyester, are controlled so as to satisfy the relation: 5

    POLYESTER COMPOSITION AND FILM
    9.
    发明专利

    公开(公告)号:JP2002348361A

    公开(公告)日:2002-12-04

    申请号:JP2002074643

    申请日:2002-03-18

    Abstract: PROBLEM TO BE SOLVED: To provide a polyester composition hardly suffering from coarse projection and surface defects and excellent in oligomer deposition-inhibiting properties, and a polyester film. SOLUTION: The polyester composition contains in the molecule a constituting unit represented by chemical formula (9) (wherein R41 -R44 are each H or a hydrocarbyl group having a carbon number in the range of 1-20, provided that in the case of a hydrocarbyl group at least one hydrocarbyl group has at least 6 carbons). Preferably, the content of the above constituting unit is caused to be in the range of 0.003-2 mole % based on the mole number of constituting portions derived from the dicarboxylic acid component of the polyester. The polyester film is also provided.

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