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    COPLLYESTER AND ITS PRODUCTION
    3.
    发明专利
    COPLLYESTER AND ITS PRODUCTION 失效

    公开(公告)号：JPH09241360A

    公开(公告)日：1997-09-16

    申请号：JP5738796

    申请日：1996-03-14

    Applicant: TORAY INDUSTRIES

    Inventor： TATEBAYASHI TAKEO ,  SUGANUMA HEIROKU ,  FUJITA AKIHARU

    IPC: C08J5/18 ,  C08G63/181

    Abstract: PROBLEM TO BE SOLVED: To precrystallize isophthalic acid copolyester chips while preventing them from being fused and from lowering in handleability and intrinsic viscosity by drying them in the presence of fed moisture under specified conditions. SOLUTION: Isophthalic acid copolyester chips are fed from a chip inlet 3 into a drier containing an atmosphere heated to a temperature below the Tg measured by DSC before being crystallized by means of a heater 1, and moisture is fed thereinto from a feed inlet 4. They are agitated with impellers 5 and 6 driven in the counter directions by a motor M and heated to a temperature determined by formula I (wherein M is the rate of the copolymerized isophthalic acid and is in the range: 10mol% =0.25). The dried chips are discharged from an outlet 8 to obtain a copolyester giving a thermogram in which at least one Tm' (a multiple melting peak temperature ( deg.C) which appears on the side lower than Tm) when measured by DSC, the total of the respective ΔHm' (the heat absorption of Tm', Cal/g) is 0.1-8 times as high as ΔHm (the heat absorption (Cal/g) at Tm) and having a degree of crystallinity of 25-50%.

    COPOLYMERIC POLYESTER CHIP AND MANUFACTURE THEREOF
    4.
    发明专利
    COPOLYMERIC POLYESTER CHIP AND MANUFACTURE THEREOF 失效

    公开(公告)号：JPH07108528A

    公开(公告)日：1995-04-25

    申请号：JP25306793

    申请日：1993-10-08

    Applicant: TORAY INDUSTRIES

    Inventor： TATEBAYASHI TAKEO ,  SHIMIZU YUZO ,  HIRAYAMA TAKASHI

    IPC: C08J3/12 ,  B29B9/00 ,  B29B13/02 ,  B29K67/00 ,  C08G63/88 ,  C08J3/00 ,  C09J167/00 ,  C09J167/02

    Abstract: PURPOSE:To manufacture raw material chips not fusing to machine walls by setting a multiple fusing peak temperature measured by DSC in a specific range, and allowing the heat absorption amount to be a specific value or more in isophthalic acid copolymcrlc polyester chips. CONSTITUTION:Isophthalic acid copolymeric polyestar chips are determined to be in the range of 100-160 deg.C in its Tm' measured by DSC and 0.1cal/g or more in its heat absorption amount. Herein, Tm' is a multiple fusing peak temperature generated at the side of lower temperature than Tm. In its crystallization, the dry machine wall temperature during chip supply in an atmosphere of gas is a glass-transition temperature of the chips prior to crystallization or lower and raised to the temperature in 10-40min in temperature a formula described below. Herein. the formula is made 3.4M+66.5

    PRODUCTION OF POLYESTER YARN HAVING IMPROVED FASTNESS TO LIGHT
    5.
    发明专利
    PRODUCTION OF POLYESTER YARN HAVING IMPROVED FASTNESS TO LIGHT 失效

    公开(公告)号：JPS61225315A

    公开(公告)日：1986-10-07

    申请号：JP6387885

    申请日：1985-03-29

    Applicant: TORAY INDUSTRIES

    Inventor： TATEBAYASHI TAKEO ,  KUWATA JOSHIN ,  OKADA TAKEHIKO

    IPC: D01F6/92 ,  D01F1/10 ,  D01F6/86

    Abstract: PURPOSE:To improve fastness to fading, by blending a polyester consisting essentially of ethylene terephthalate copolymerized with a polyoxyalkylene glycol with a specific amount of a specified hindered amine compound, and melting it under a specific condition. CONSTITUTION:A polyester consisting essentially of ethylene terephthalate copolymerized with 0.5-10wt% polyoxyalkylene glycol is blended with 0.02-2wt% hindered amine compound (>=800mol.wt.) having a constituent unit shown by the formula (X is O, C, or N; Y and Z are H, or C; R1-R8 are H, 1-23C hydrocarbon group, R1 and R2, R3 and R4, R5 and R6, or R7 and R8 may be bonded each other). During melt spinning, the blend is melted under a condition to satisfy 1

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