公开(公告)号：JPS5218753A

公开(公告)日：1977-02-12

申请号：JP9470075

申请日：1975-08-05

Applicant: TORAY INDUSTRIES

Inventor： NAKAZAWA SHIYUNJI ,  TANAKA MICHIHIKO ,  TANAKA CHIAKI

IPC: C08L67/00 ,  B29B9/00 ,  B29B9/12 ,  C08G63/00 ,  C08G63/66 ,  C08J3/12 ,  C08L67/02

Abstract: PURPOSE:Chips composed of poly(tetramethylene terephthalate) component and poly(tetramethylene glycol) component, having no trouble of mutual fusing, foaming, etc. at the drying process, by specifying their crystallinity and chip shape.

公开(公告)号：JPS51138795A

公开(公告)日：1976-11-30

申请号：JP6253875

申请日：1975-05-27

Applicant: TORAY INDUSTRIES

Inventor： AZUMA KUNIHIRO ,  HAYASHI MASAHIKO ,  NAKAZAWA SHIYUNJI ,  TANAKA MICHIHIKO

IPC: C08G63/00 ,  C08G63/78 ,  C08G63/82

Abstract: PURPOSE:To prepare a polytetramethylene terephthalate having an intrinsic viscosity of higher than 1. 2 by direct polymerization in solution without using any other process for increasing the degree of polymerization, by specifying the character of bis-(4-hydroxybutyl) terephthalate and its oligomers.

公开(公告)号：JPS5495658A

公开(公告)日：1979-07-28

申请号：JP188878

申请日：1978-01-13

Applicant: TORAY INDUSTRIES

Inventor： NAKAZAWA SHIYUNJI ,  TANAKA MICHIHIKO ,  SATOU TSUTOMU

IPC: B01J2/20 ,  B29B9/00 ,  B29B9/06 ,  B65G15/14 ,  B65H51/08

Abstract: PURPOSE:To obtain chips with little dispersion of desired shapes and dimensions, free from mutual cohesion, by making the crystallinity of a block copolymer strand a specific value while cooling and conveying the strand with grooved belts and flat belts in a cooling tank. CONSTITUTION:A molten block copolymer consisting of polytetramethylene terephthalate and poly-tetramethylene glycol components as main structural units is extruded from a die opening into a strand, which is conveyed at a speed of 20- 80 m/min while being separated respectively and cooled with a pair of grooved belts set in a cooling tank, then conveyed at a speed of 40-130 m/min while being held by a pair of flat belts and cooled in the same tank. The speed of the flat belts is 1.5-3.0 times that of the grooved belts to crystallize and draw the strands moderately, thus giving the crystallinity of 5-60%, preferably 10-40%. The cooled strand is then dehydrated and cut.

公开(公告)号：JPS5371138A

公开(公告)日：1978-06-24

申请号：JP14562676

申请日：1976-12-06

Applicant: TORAY INDUSTRIES

Inventor： YATABE YOUKO ,  TANAKA CHIAKI ,  NAKAZAWA SHIYUNJI

IPC: C08G63/00 ,  C08G63/66 ,  C08L67/02 ,  C08L71/00 ,  C09J167/00

Abstract: PURPOSE:The title adhesives having improved adhesiveness to articles and mechanical and chemical properties, and solubility, prepared by copolymerizing a short chain polyester segment with isophthalic acid and 1,6-hexanediol.

公开(公告)号：JPS5314742A

公开(公告)日：1978-02-09

申请号：JP8904776

申请日：1976-07-28

Applicant: TORAY INDUSTRIES

Inventor： TANAKA CHIAKI ,  MORIKAWA MASANOBU ,  YATABE YOUKO ,  NAKAZAWA SHIYUNJI ,  MATSUKI TOMIJI

IPC: C08G63/00 ,  C08G63/12 ,  C08G63/66 ,  C08L67/02 ,  C09J167/00

Abstract: PURPOSE:To obtain adhesive for fiber good in hot water washing resistance and anti-drycleaning preperty by copolymerizing terephthalic acid, a mixture of butane diol and linear aliphatic diol, and poly(tetramethylene-oxide)glycol.

公开(公告)号：JPS523692A

公开(公告)日：1977-01-12

申请号：JP7863775

申请日：1975-06-26

Applicant: TORAY INDUSTRIES

Inventor： YAMAMOTO YOSHIYUKI ,  OKASAKA SHIYUUSHIN ,  MORIKAWA MASANOBU ,  NAKAZAWA SHIYUNJI ,  TANAKA MICHIHIKO

IPC: C08G63/00 ,  C08G63/82

Abstract: PURPOSE:Molded articles based on polybutylene terephthalate with greatly improved moldability and excellent mechanical properties prepared by the use of the polybutylene terephthalate as a raw material obtained by polymerization in the presence of a specified glycol titanate as a catalyst.

公开(公告)号：JPS60106515A

公开(公告)日：1985-06-12

申请号：JP21250683

申请日：1983-11-14

Applicant: TORAY INDUSTRIES

Inventor： OCHI SHIROU ,  NAKAZAWA SHIYUNJI ,  NAKAJIMA HIROTAKA

IPC: B01D41/02 ,  D01D1/10 ,  D01D4/04

Abstract: PURPOSE:To recover and regenerate used packed filter medium comprising metallic powder used in a melt-spinning process to obtain a regenerated filter medium effective like a fresh one by heating the used metallic powder, washing with a solvent, and then with alkali. CONSTITUTION:When metallic powder consisting of stainless steel and having sharp edges and many protrusions is used as a packed filter medium for spinning, a large amt. of polymer sticks to the filter medium. To regenerate and recover the filter medium, it is dismantled and heated in a heating furnace, then charged in a meshed package, dipped in a washing tank contg. triethylene glycol to dissolved and remove the polymer. The dipping is performed at, for example, 230-260 deg.C for 2-4hr. Then, it is washe for ca. 20-40min, and further dipped in aq. alkali of 15-30% concn. in an alkali washing tank to regenerate the metallic powder. Preferred temp. is ca. 100 deg.C. The product is washed finally with water to remove alkali and is dried.

公开(公告)号：JPS5358597A

公开(公告)日：1978-05-26

申请号：JP13326776

申请日：1976-11-08

Applicant: TORAY INDUSTRIES

Inventor： NAKAZAWA SHIYUNJI ,  MATSUKI TOMIJI ,  AZUMA KUNIHIRO ,  TAKAYAMA HITOSHI ,  TANAKA MICHIHIKO

IPC: C08G63/00 ,  C08G63/66

Abstract: PURPOSE:To suppress the by-production of tetrahydrofurane and to increase the viscosity of the resulting polymer, by using a specific catalyst and an aldehyde in the condensation of terephthalic acid and tetramethylene glycol, etc. to form the title polymer useful as a thermoplastic elastomer.

公开(公告)号：JPS5319426A

公开(公告)日：1978-02-22

申请号：JP9207376

申请日：1976-08-03

Applicant: TORAY INDUSTRIES

Inventor： NAKAZAWA SHIYUNJI ,  AZUMA KUNIHIRO ,  MATSUKI TOMIJI ,  TANAKA MICHIHIKO

IPC: D01F6/92 ,  D01D5/22 ,  D01F6/62 ,  D02J3/02

Abstract: PURPOSE:To obtain fibers having excellent tapering processability and flex recovery, by incorporating a small amount of other acid component with polytetramethylene terephthalate, and by controlling the intrinsic viscosity and the content of carboxyl end group within specific ranges.

公开(公告)号：JPS52144091A

公开(公告)日：1977-12-01

申请号：JP6019776

申请日：1976-05-26

Applicant: TORAY INDUSTRIES

Inventor： NAKAZAWA SHIYUNJI ,  AZUMA KUNIHIRO ,  MATSUKI TOMIJI ,  TANAKA MICHIHIKO

IPC: C08G63/00 ,  C08G63/82

Abstract: PURPOSE:To obtain polytetramethylene terephthalate isophthalate copolymers having excellent properties with the decrease of by-products and a reaction time, by the esterification of terephthalic acid and isophthalic acid with tetramethylene glycol in the presence of novel effective catalysts and the following polycondensation.