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    MANUFACTURE OF HIGH STRENGTH AND HIGH TRANSPARENCY SHEETLIKE PRODUCT
    32.
    发明专利
    MANUFACTURE OF HIGH STRENGTH AND HIGH TRANSPARENCY SHEETLIKE PRODUCT 失效

    公开(公告)号：JPH07164461A

    公开(公告)日：1995-06-27

    申请号：JP31223693

    申请日：1993-12-13

    Applicant: AGENCY IND SCIENCE TECHN ,  CHISSO CORP

    Inventor： YOKOTA JUNICHIRO ,  NAKAYAMA KAZUO ,  KAIDO AKIRA

    IPC: B29C43/22 ,  B29C43/46 ,  B29C43/56 ,  B29K23/00 ,  B29L7/00

    Abstract: PURPOSE:To provide excellent transparency, high longitudinal strength and a small lateral thick spot by sequentially passing a sheetlike product of resin from a low speed roll side, drawing it by high speed rolls, and satisfying relationship between a pressure roll and sheet width, thickness for specific formulae. CONSTITUTION:The method for manufacturing a high strength and high transparency sheetlike product comprises the steps of setting pressure rolls 2, 3 from a temperature lower by 80 deg.C than a melting point of polyolefin resin to the melting point, supplying a sheet 6 made of the resin by a feed roll 1 in close contact with low speed rolls 2 to deform it between the rolls 2 and 3, drawing it in sufficient contact with the roll 3, and winding it on a roll 4. Relationship D between the rolls 2, 3 and a sheet width and relationship P between the rolls and a sheet thickness satisfy formulae I and II. In this case, D, P are respectively represented by formulae III and IV. However, in the formula III, W1 is sheet width (mm) before rolling, and R is a pressure roll speed ratio. In the formula IV, F is a pressure force kg, r is pressure roll radius (mm), t is sheet thickness (mm) before rolling, and s is roll interval (mm).

    SPHERICAL PARTICLE OF LIQUID CRYSTALLINE POLYMER AND ITS PRODUCTION
    33.
    发明专利
    SPHERICAL PARTICLE OF LIQUID CRYSTALLINE POLYMER AND ITS PRODUCTION 失效

    公开(公告)号：JPH02281045A

    公开(公告)日：1990-11-16

    申请号：JP10294889

    申请日：1989-04-21

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： KIYOUTANI MICHIMASA ,  KAIDO AKIRA ,  NAKAYAMA KAZUO

    IPC: B29B9/00 ,  C08J3/12 ,  C08L67/00 ,  C08L67/02 ,  C09K19/38

    Abstract: PURPOSE:To obtain the subject new spherical particles useful as a raw material for forming powder and a filler for thermoplastic polymer material, heat- resistant coating compound, adhesive, etc., having excellent heat resistance by specifying average particle diameters. CONSTITUTION:A liquid crystal polymer having self-orientating properties (preferably thermotropic liquid crystal polyester) is blended with a solvent-soluble non liquid crystalline polymer (preferably polyethylene terephthalate) in the weight ratio of (30:70) to (10:90), heated to a temperature >= the melt temperature of the liquid crystal polymer and the non-crystalline polymer and capable of maintaining the liquid crystal polymer in a liquid crystal state, extruded by a gear pump, etc., and molded into a sheet shape. Then the non-liquid crystalline polymer is dissolved in a solvent such as nitrobenzene, etc., removed, washed with ethanol and water to give the objective spherical particles having 0.5mum to 10mum particle diameter.

    PRODUCTION OF PLASTIC MOLDED ARTICLE HAVING HIGH HARDNESS
    34.
    发明专利
    PRODUCTION OF PLASTIC MOLDED ARTICLE HAVING HIGH HARDNESS 失效

    公开(公告)号：JPH0192230A

    公开(公告)日：1989-04-11

    申请号：JP5615087

    申请日：1987-03-11

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： MATSUDA HIROO ,  NAKANISHI HACHIRO ,  TANAKA YOSHIO ,  NAKAYAMA KAZUO ,  KATO MASAO

    IPC: B29C39/42 ,  C08F38/00 ,  C08G69/26 ,  C08J3/24 ,  C08J5/00

    Abstract: PURPOSE:To easily obtain the titled molded article composed of a highly crystalline polymer having a network structure containing two-dimensional covalent bond, by carrying out solid-phase polymerization of the diacetylene part of a diacetylene nylon chloride and subjecting the chloride to thermal polycondensation in a mold. CONSTITUTION:The diacetylene part of a diacetylene nylon chloride of formula I [R1 and R2 are (substituted) (cyclo)alkylene or arylene] is subjected to solid- phase polymerization. The objective molded article can be produced by the thermal polycondensation of the polymerized chloride in a mold under a pressure of 0.5X10 -15X10 atm. at 100-400 deg.C. The chloride of formula I is preferably produced usually by mixing diacetylenecarboxylic acid of formula II with equimolar amount of diamine of formula III. The solid-phase polymerization of the diacetylene part is carried out, e.g., by sealing the chloride of formula I in vacuum and irradiating with gamma-ray of cobalt 60.

    METHOD FOR MEASURING SURFACE ORIENTABILITY OF HIGH-POLYMER MATERIAL AND INSTRUMENT USED THEREFOR
    35.
    发明专利
    METHOD FOR MEASURING SURFACE ORIENTABILITY OF HIGH-POLYMER MATERIAL AND INSTRUMENT USED THEREFOR 失效

    公开(公告)号：JPS63243836A

    公开(公告)日：1988-10-11

    申请号：JP7937987

    申请日：1987-03-31

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： KAIDO AKIRA ,  NAKAYAMA KAZUO ,  KANETSUNA HISAAKI

    IPC: G01N21/21 ,  B29C55/00 ,  G01N21/27

    Abstract: PURPOSE:To efficiently and exactly measure the surface orientability of a high-polymer material having various shapes and smooth surface by projecting the light past a polarizer to the smooth surface of the high-polymer material from an approximately perpendicular direction and measuring the wavelength dispersion of the reflectivity of the polarized light. CONSTITUTION:The light past the polarizer is projected to the smooth surface of the high- polymer material from the approximately perpendicular direction. This operation is repeated by rotating the polarizer and the wavelength dispersion of the reflectivity of the polarized light is measured by a detector. The result of the measurement is converted to the wavelength dispersion of a refractive index n or absorption coefft. K in accordance with the equation I and the equation II or the equation III [where omega, omega0 are the frequencies of the light, R(omega) is the reflectivity at the frequency omega]. The peak value of the absorption coefft. K or the difference between the max. value and min. value in the wavelength dispersion of the refractive index n is detected and the absorption intensity in the respective polarization directions is determined. An orientation coefft. f is determined in accordance with the equation IV and the equation V (where D is the ratio of the absorption intensity, D0=2cot gamma, gamma is the angle between the transition moment and high-polymer chain) from the resulted absorption intensity.

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