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    CROSSLINKED POLYETHYLENE RESIN FOAM
    45.
    发明专利
    CROSSLINKED POLYETHYLENE RESIN FOAM 失效

    公开(公告)号：JPS61238831A

    公开(公告)日：1986-10-24

    申请号：JP8036985

    申请日：1985-04-17

    Applicant: TORAY INDUSTRIES

    Inventor： NISHIOKA TAKESHI ,  KAMISUTEISHI SHIGEO ,  KAWANO HIROSHI

    IPC: C08J9/06 ,  C08J9/04

    Abstract: PURPOSE:The titled foam excellent in heat resistance and compression set, comprising a polymer blend comprising a specified random ethylene/propylene copolymer and a linear PE. CONSTITUTION:A heat-decomposable blowing agent (e.g., azodicarbonamide) and, optionally, a crosslinking agent which can generate radicals upon heating are added to a polymer blend comprising a random ethylene/propylene copolymer (A) of a propylene content of 15-30wt%, a m.p. of 100-118 deg.C and a crystallization temperature of 85-100 deg.C and a linear PE (B) of MI of 0.1-50g/10min, a density of 0.915-0.945g/cm and a m.p. of 115-135 deg.C. The obtained mixture is formed into a sheet and expanded to obtain a crosslinked polyethylene foam having an area intensity ratio (R) determined from a C-NMR spectrum and represented by the equation of 20-300, a gel fraction of 15-45%, a compression set (S) in the range of S

    CROSSLINKED POLYETHYLENE RESIN FOAM OF HIGH EXPANSION RATIO
    46.
    发明专利
    CROSSLINKED POLYETHYLENE RESIN FOAM OF HIGH EXPANSION RATIO 失效

    公开(公告)号：JPS61188431A

    公开(公告)日：1986-08-22

    申请号：JP2619585

    申请日：1985-02-15

    Applicant: TORAY INDUSTRIES

    Inventor： NISHIOKA TAKESHI ,  KAMIJIYUTSUKOKU SHIGEO ,  KAWANO HIROSHI

    IPC: C08J9/06 ,  C08J9/04 ,  F24D3/16

    Abstract: PURPOSE:The title foam excellent in flexibility and heat resistance and high in an expansion ratio, comprising a blend polymer comprising a specified ethylene/propylene random copolymer and a low-density PE. CONSTITUTION:A blend polymer obtained by blending an ethylene/propylene random copolymer (A) of a propylene content of 15-30wt%, a m.p. of 100-118 deg.C and a crystallization temperature of 85-100 deg.C with a low-density PE (B) of a m.p. at a B/A ratio of 0.10-5.70 is mixed with a heat-decomposable blowing agent (e.g., azodicarbonamide) and, optionally, a crosslinking agent which generates radicals upon heating, and the obtained mixture is formed into a sheet, which is crosslinked to a gel content of 15-60% and expanded to obtain a crosslinked polyethylene resin foam having an area intensity ratio (R) as determined from a C-NMR spectrum in the range of 3.0-74.0 and a flexibility index (N)

    CROSSLINKED POLYETHYLENE RESIN FOAM
    47.
    发明专利
    CROSSLINKED POLYETHYLENE RESIN FOAM 失效

    公开(公告)号：JPS61188430A

    公开(公告)日：1986-08-22

    申请号：JP2619485

    申请日：1985-02-15

    Applicant: TORAY INDUSTRIES

    Inventor： NISHIOKA TAKESHI ,  KAMIJIYUTSUKOKU SHIGEO ,  KAWANO HIROSHI

    IPC: C08J9/06 ,  C08J9/04

    Abstract: PURPOSE:The title foam excellent in flexibility and heat resistance and high in an expansion ratio, comprising an ethylene/propylene random copolymer specified in a m.p., a crystallization temperature, an area intensity ratio and a flexibility index. CONSTITUTION:An ethylene/propylene random copolymer of a propylene content of 15-30wt% is mixed with a heatdecomposable blowing agent (e.g., azodicarbonamide) and, optionally, a crosslinking agent which generates radicals upon heating and the obtained mixture is molded into a sheet, which is crosslinked to a gel content of 154n60% and expanded to obtain a crosslinked polyethylene resin foam having a melting temperature (Tm) in the range of 100 C-NMR spectrum in the range of 3.0-12.0 and a flexibility index (N)

    POLYOLEFIN FOAM
    48.
    发明专利
    POLYOLEFIN FOAM 失效

    公开(公告)号：JPS60179428A

    公开(公告)日：1985-09-13

    申请号：JP3257884

    申请日：1984-02-24

    Applicant: TORAY INDUSTRIES

    Inventor： NISHIOKA TAKESHI ,  NAKAMURA AKIRA ,  YABE KENJI

    IPC: C08J9/06 ,  C08J9/04

    Abstract: PURPOSE:The titled foam excellent in heat insulation, processability, and flame retardancy, comprising a specified thermoplastic resin (mixture), a water-containing inorganic filler, and a bisphenol A-derived (crosslinked) brominated epoxy resin. CONSTITUTION:The titled foam of a bromine content of 2-10wt% is obtained by melt-mixing and expanding a mixture of 100pts.wt. (A) resin component containing either (a) a lowly crystaline (rubber-like) thermoplastic resin of a crystallinity =0.910g/cm ) in a mixing ratio, b/a, of 0- 4, 60-200pts.wt. (B) water-containing inorganic filler containing bound water or hydroxyl groups in the molecule and having a moisture-releasing peak temperature >=250 deg.C and a particle diameter of 0.01-50mu [e.g., Mg(OH)2], (C) a bisphenol A-derived epoxy resin of a bromine content of 16-60wt%, an epoxy equivalent weight of 200-2,000, and an MW of 400-4,000 [e.g., a compound of the formula (wherein n and m are integers, and n>=m)], and (D) a heat-decomposable blowing agent (e.g., azodicarbonamide).

    MANUFACTURE OF POLYESTER FILM
    49.
    发明专利
    MANUFACTURE OF POLYESTER FILM 失效

    公开(公告)号：JPS58145421A

    公开(公告)日：1983-08-30

    申请号：JP2737082

    申请日：1982-02-24

    Applicant: TORAY INDUSTRIES

    Inventor： TANAKA KAZUHIRO ,  NISHIOKA TAKESHI ,  MINAMI TOMOYUKI

    IPC: B29C49/00 ,  B29C55/00 ,  B29C55/16 ,  C08J5/18

    Abstract: PURPOSE:To manufacture stably at a high speed the titled film which is free from the unevenness in stretch, thin and has a high strength, by stretching simultaneously an amorphous polyester film biaxially in both longitudinal and lateral directions at a specified temperature, further stretching it simultaneously and biaxially at a lower temperature than the first time. CONSTITUTION:The desired film is obtained, making a total stretch ratio more than 33 times, by melt-extruding a polyester (e.g.; polyethylene terephthalate etc.), then making a non-crystalline film by quenching, stretching this amorphous polyester film simultaneously and biaxially in both longiturinal and lateral directions at a temperature above 115 deg.C and further stretching it simultaneously and biaxially in both longitudinal and lateral directions at a temperature above 80 deg.C and below the temperature of the first simultaneous and biaxial stretch. Also it is desirable that the intrinsic viscosity of the polyester is 0.51-1.00, preferably 0.64-0.90.

    PREPARATION OF BIAXIAL ORIENTATED POLYETHYLEN TEREPHTHALATE FILM
    50.
    发明专利
    PREPARATION OF BIAXIAL ORIENTATED POLYETHYLEN TEREPHTHALATE FILM 失效

    公开(公告)号：JPS58118220A

    公开(公告)日：1983-07-14

    申请号：JP67082

    申请日：1982-01-06

    Applicant: TORAY INDUSTRIES

    Inventor： MINAMI TOMOYUKI ,  TANAKA KAZUHIRO ,  NISHIOKA TAKESHI

    IPC: B29C49/00 ,  B29C55/00 ,  B29C55/14 ,  C08J5/18

    Abstract: PURPOSE:To obtain a film of which mechanical strength in longitudinal direction is high by such an arrangement wherein a substantially non-orientation polyethylene terephthalate film is multistage extended under certain conditions, and next, the film is extended laterally, and then it is further extended longitudinally again, and at this time, the product of an extension multiple of each extension shall be made larger than 25 times. CONSTITUTION:A film made of substantially non-oriented polyethylene terephthalate is multi-stage extended so that its non-crystal orientation coefficient becomes 0.6-1.0, and its double refraction rate becomes 0.02-0.1, and next it is extended laterally at an extension multiple of 2.5-4.5 times, and further it is extended longitudinally again at an extension multiple of 1.5-2.5 times and further the product of those multiples of multi-stage extension, lateral extension and longitudinal extension shall be made larger than 25 times. By this arrangement, it is possible to stably manufacture polyethylene terephthalate film of which mechanical strength in the longitudinal direction is high.

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