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    POLYAMIDE EXCELLENT IN STRETCHABILITY
    5.
    发明专利
    POLYAMIDE EXCELLENT IN STRETCHABILITY 失效

    公开(公告)号：JP2001031761A

    公开(公告)日：2001-02-06

    申请号：JP21017499

    申请日：1999-07-26

    Applicant: UBE INDUSTRIES

    Inventor： OKUSHITA YOJI ,  TANAKA SHOICHI

    IPC: B29C55/02 ,  B29C55/14 ,  B29K77/00 ,  B29L7/00 ,  C08G69/26 ,  C08G69/36 ,  C08J5/18 ,  D01F6/80

    Abstract: PROBLEM TO BE SOLVED: To provide a polyamide excellent in stretchability, especially suitable for a successive biaxial orientation method. SOLUTION: The polyamide contains a unit comprising a lactone and/or an aminocarboxylic acid, a unit comprising a dicarboxylic acid and a unit comprising a diamine containing a 6-16C branched alicyclic diamine. Specifically, the polyamide contains 50-99.8 mol% of the lactone and/or the aminocarboxylic acid, 0.1-25 mol% of the dicarboxylic acid and 0.1-25 mol% of the diamine, wherein 10-100 mol% of the diamine is a 6-16C branched alicyclic diamine.

    HEAT-RESISTANT FIBER HAVING HIGH STRENGTH
    6.
    发明专利
    HEAT-RESISTANT FIBER HAVING HIGH STRENGTH 失效

    公开(公告)号：JPH06330407A

    公开(公告)日：1994-11-29

    申请号：JP11616493

    申请日：1993-05-18

    Applicant: UBE INDUSTRIES

    Inventor： NISHIYAMA MASAO ,  TANAKA SHOICHI ,  MATSUDA SHINYA ,  ZUSHI KAZUO

    IPC: D01F6/74 ,  G02B1/04 ,  G02B6/00

    Abstract: PURPOSE:To obtain the fiber having an improved tensile elongation, tensile modulus, etc., by specifying the structural unit of a polyglutarimide resin and the birefringence of the fiber. CONSTITUTION:A polyglutarimide resin containing >=10mol% (preferably >=20mol%) of the structural unit of formula (R1 and R2 are independently H or 1-4C hydrocarbon group; R3 is H, 1-12C hydrocarbon group, etc.) is formed to a fiber having a birefringence of 0.3X10 to 8.0X10 . The birefringence can be attained by drawing the spun fiber yarn 1.5-7 times at a temperature higher than the glass transition temperature of the resin by 3-50 deg.C.

    HIGH-STRENGTH, HEAT-RESISTANT FILM OR SHEET
    7.
    发明专利
    HIGH-STRENGTH, HEAT-RESISTANT FILM OR SHEET 失效

    公开(公告)号：JPH06240017A

    公开(公告)日：1994-08-30

    申请号：JP2693993

    申请日：1993-02-16

    Applicant: UBE INDUSTRIES

    Inventor： NISHIYAMA MASAO ,  TANAKA SHOICHI ,  ZUSHI KAZUO

    IPC: B29C55/12 ,  B29K79/00 ,  B29L7/00 ,  C08F8/30 ,  C08F8/32 ,  C08J5/18

    Abstract: PURPOSE:To obtain a film or sheet having high elongation at break, high strength and excellent heat resistance by stretching a film or sheet of a specified polyglutarimide resin at a specified draw ration. CONSTITUTION:This film or sheet is obtained by stretching 0.2 -to 5.0-fold a film or sheet of polyglutarimide resin having at least 20wt.% structural units of formula I and at most 20wt.% structural units of formula II. In the formulas I and II, R1, R2 and R4 are each H, a 1-4C hydrocarbon group, cycloalkyl, an aromatic group such as benzyl, phenyl or naphthyl, or a heterocyclic compound. The polyglutarimide resin is synthesized by the reaction of an acrylic resin produced from methyl methacrylate as the principal raw material with ammonia or a primary amine, and the proportion of the structural units of formula I to those of formula II can be adjusted by appropriately varying the amount of the ammonia or primary amine, the reaction temperature, the reaction pressure, the reaction time, etc.

    8.
    发明专利
    失效

    公开(公告)号：JPH05295109A

    公开(公告)日：1993-11-09

    申请号：JP13745892

    申请日：1992-04-14

    Applicant: UBE INDUSTRIES

    Inventor： NISHIYAMA MASAO ,  MIWA YOSHIYUKI ,  TANAKA SHOICHI

    IPC: C08G69/24

    Abstract: PURPOSE:To easily obtain high-purity 2-pyrrolidone polymer having a high mol.wt. by washing 2-pyrrolidone polymer with an aqueous acid solution having a specific pH, separating the polymer from the solution, and drying it. CONSTITUTION:2-Pyrrolidone is polymerized in the presence of a basic polymerization catalyst (e.g. pottasium hydroxide) and carbon dioxide as a promotor. The obtained 2-pyrrolidone polymer is washed with an aqueous acid solution having a pH of 1-6. The polymer is then separated from the solution and dried. Thus, high-purity 2-pyrrolidone polymer can be easily obtained which has a high mol.wt. and from which the catalyst residue has been sufficiently removed.

    THERMOPLASTIC POLYMER COMPOSITION
    9.
    发明专利
    THERMOPLASTIC POLYMER COMPOSITION 失效

    公开(公告)号：JPH02227459A

    公开(公告)日：1990-09-10

    申请号：JP4534789

    申请日：1989-02-28

    Applicant: UBE INDUSTRIES

    Inventor： NISHIYAMA MASAO ,  TANAKA SHOICHI

    IPC: C08L75/04 ,  C08L23/12 ,  C08L25/06 ,  C08L75/00 ,  C08L101/00

    Abstract: PURPOSE:To obtain a thermoplastic polymer composition having excellent appli cation properties without any adverse effect on the mechanical properties of said polymer by mixing, as being heated, a thermoplastic polymer with a com pound containing active H atoms and an isocyanate group-bearing compound. CONSTITUTION:The subject thermoplastic polymer composition is obtained by melt-kneading (A) 40 to 98 pts.wt., preferably 60 to 95 pts.wt. of a thermo plastic polymer such as polypropylene or ABS together with (B) a compound having 2 or more active H atoms such as polypropylene glycol and (C) a com pound bearing 2 or more isocyanate groups so that the total amount of (B)+(C) is 60 to 2 pts.wt., preferably 40 to 5 pts.wt. and the equivalent ratio of the active H atom in (B) to the isocyanate groups in (C) is 0.5 to 2, preferably 0.8 to 1.5 at a temperature high than 60 deg.C, for example, by means of a Banburg mixer.

    MOLDING PROCESS OF HOLLOW PRODUCT AND ITS PRODUCT
    10.
    发明专利
    MOLDING PROCESS OF HOLLOW PRODUCT AND ITS PRODUCT 失效

    公开(公告)号：JPH0250811A

    公开(公告)日：1990-02-20

    申请号：JP19997888

    申请日：1988-08-12

    Applicant: UBE INDUSTRIES

    Inventor： NISHIYAMA MASAO ,  TANAKA SHOICHI

    IPC: B29C39/10 ,  B29C39/26 ,  B29C45/00 ,  B29C45/14 ,  B29K105/20 ,  B29L22/00

    Abstract: PURPOSE:To cause molding operation to be easy and to improve its productivity by using, as a core, the hollow molded object having a specified thermal deformation temperature, when a hollow product is molded by reactive injection molding. CONSTITUTION:The hollow molded object, as a core, is composed of the resin of e.g. polyethylene terephthalate, 6 nylon, 66 nylon, polycarbonate or the polymer alloy containing these resins as a base having the thermal deformation temperature of at least 10 deg. in the measurement carried out by ASTM D-648 (load 4.6kg/cm ). This hollow molded object is easily produced by blow molding. After the mold in which the core made by above-mentioned process is set has been adjusted at a prescribed temperature, liquid RIM raw material (or R-RIM raw material) adjusted at a prescribed temperature is poured into a mold with RIM molding machine (or R-RIM molding machine), casting molding machine or manual operation. Thus, the hollow product is produced.

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