SEA-ISLANDS TYPE COMPOSITE FIBER HAVING EXCELLENT MOISTURE ABSORBABILITY, FALSE TWIST YARN, AND FIBER STRUCTURE

    公开(公告)号:SG11201811798RA

    公开(公告)日:2019-02-27

    申请号:SG11201811798R

    申请日:2017-06-30

    Abstract: A sea-islands type composite fiber characterized in that an island component is a polymer having moisture absorbability, the ratio (T/R) of the thickness (T) of an outermost layer to the diameter (R) of the fiber on a transverse cross-section of the fiber is 0.05 to 0.25, and the moisture absorption rate difference (”MR) after a hot water treatment is 2.0 to 10.0%. The term "thickness of an outermost layer" refers to the difference between the radius of the fiber and the radius of a circumscribed circle formed by connecting apexes of island components located on an outermost periphery, and represents the thickness of a sea component in the outermost layer. Provided is a sea-islands type composite fiber which does not undergo the cracking of a sea component upon the volume expansion of a moisture-absorbable polymer that serves as an island component during a hot water treatment such as a dyeing treatment, rarely undergoes the formation of dying specks or fluffs when the composite fiber is formed into a fiber structure such as a woven fabric or a knitted fabric, has excellent quality, is reduced in the elution of the moisture-absorbable polymer, also has excellent moisture absorbability even after a hot water treatment such as a dyeing treatment, and also has dry touch inherent to a polyester fiber when the sea component is polyester.

    COPOLYMERIZED POLYESTER AND POLYESTER FIBER FORMED FROM SAME

    公开(公告)号:MY164820A

    公开(公告)日:2018-01-30

    申请号:MYPI2015700521

    申请日:2013-09-18

    Abstract: THE PRESENT INVENTION PROVIDES A COPOLYESTER HAVING HIGH HYGROSCOPIC PROPERTIES WHILE RETAINING THE EXCELLENT PROPERTIES OF POLYESTER, AND A POLYESTER FIBER COMPOSED OF THE COPOLYESTER HAVING AN EXCELLENT HYGROSCOPICITY. THE COPOLYESTER OF THE PRESENT INVENTION IS A COPOLYESTER COMPRISING ETHYLENE TEREPHTHALATE AS MAIN REPEATING UNITS AND COPOLYMERIZED POLYETHYLENE GLYCOL IN AN AMOUNT OF FROM 10 TO 25% BY WEIGHT, THE POLYETHYLENE GLYCOL HAVING A NUMBER AVERAGE MOLECULAR WEIGHT OF FROM 8,000 TO 20,000, WHEREIN THE COPOLYESTER HAS AN AMORPHOUS STRUCTURE IN WHICH POLYETHYLENE GLYCOL AND POLYETHYLENE TEREPHTHALATE COEXIST AND WHICH IS MAINLY COMPOSED OF POLYETHYLENE GLYCOL.

    3.
    发明专利
    未知

    公开(公告)号:DE69815016D1

    公开(公告)日:2003-07-03

    申请号:DE69815016

    申请日:1998-03-24

    Abstract: The present invention relates to a polyester polymerization catalyst, comprising a solution containing an aluminum compound and an alkali compound, with water or an organic solvent or a mixture consisting of water and an organic solvent as the medium, a production method thereof, and a polyester production method, in which the product obtained by the esterification reaction or ester interchange reaction between an aromatic dicarboxylic acid or any of its ester forming derivative and a diol is polycondensed, to produce a polyester, comprising the use of said polymerization catalyst containing an aluminum compound. The present invention can provide a polyester excellent in processability and can overcome such problems as spinneret contamination, filtration pressure rise, filament breaking, film breaking and foreign matter production in the production process of products such as fibers, films, resins and bottles.

    5.
    发明专利
    未知

    公开(公告)号:ID27680A

    公开(公告)日:2001-04-19

    申请号:ID20001437

    申请日:1999-10-20

    Abstract: The present invention relates to a polyester composition, comprising 0.5 to 300 ppm, as titanium atoms, of a compound oxide (A) containing titanium as an essential element and also containing a metal element selected from a group consisting of aluminum, zirconium, germanium, tin and silicon, and 0.001 to 40 wt% of particles with an average particle size of 0.01 to 10 mu m, and also to a method of production thereof, and a film composed of said polyester composition. The polyester composition of the present invention is excellent in moldability and heat resistance and solves such problems as die contamination, filtration pressure rise and yarn breaking in the production of such moldings as fibers, films and bottles. Furthermore, the polyester film of the present invention is suitable for packaging, being excellent in taste property and long-term storage quality, and can be suitably used for packaging materials, above all for being formed, especially for being laminated and formed with a substrate such as paper, nonwoven fabric or metal, to make containers, etc.

    6.
    发明专利
    未知

    公开(公告)号:DE69815016T2

    公开(公告)日:2004-03-18

    申请号:DE69815016

    申请日:1998-03-24

    Abstract: The present invention relates to a polyester polymerization catalyst, comprising a solution containing an aluminum compound and an alkali compound, with water or an organic solvent or a mixture consisting of water and an organic solvent as the medium, a production method thereof, and a polyester production method, in which the product obtained by the esterification reaction or ester interchange reaction between an aromatic dicarboxylic acid or any of its ester forming derivative and a diol is polycondensed, to produce a polyester, comprising the use of said polymerization catalyst containing an aluminum compound. The present invention can provide a polyester excellent in processability and can overcome such problems as spinneret contamination, filtration pressure rise, filament breaking, film breaking and foreign matter production in the production process of products such as fibers, films, resins and bottles.

    CATALYST FOR PRODUCING POLYESTER, PROCESS FOR PRODUCING THE SAME, AND PROCESS FOR PRODUCING POLYESTER BY USING THE SAME

    公开(公告)号:CA2253515A1

    公开(公告)日:1998-10-01

    申请号:CA2253515

    申请日:1998-03-24

    Abstract: A polymerization catalyst for polyester production which is a solution of solutes comprising an aluminum compound and an alkali compound in water, an organic solvent, or a mixture of both; and a process for producing a polyester which comprises esterifying or transesterifying an aromatic dicarboxylic acid or an ester-forming derivative thereof with a diol or an ester-forming derivative thereof and condensation-polymerizing the resultant reaction product, characterized by using the polymerization catalyst containing an aluminum compound. The catalyst can yield a polyester having excellent moldability and being usable for producing moldings such as fibers, films, resins, bottles, etc., without posing problems such as nozzle fouling, filtering pressure increase, thread breakage, film breakage, and defects caused by foreign substances.

    8.
    发明专利
    未知

    公开(公告)号:ID20551A

    公开(公告)日:1999-01-14

    申请号:ID980120

    申请日:1998-03-24

    Abstract: The present invention relates to a polyester polymerization catalyst, comprising a solution containing an aluminum compound and an alkali compound, with water or an organic solvent or a mixture consisting of water and an organic solvent as the medium, a production method thereof, and a polyester production method, in which the product obtained by the esterification reaction or ester interchange reaction between an aromatic dicarboxylic acid or any of its ester forming derivative and a diol is polycondensed, to produce a polyester, comprising the use of said polymerization catalyst containing an aluminum compound. The present invention can provide a polyester excellent in processability and can overcome such problems as spinneret contamination, filtration pressure rise, filament breaking, film breaking and foreign matter production in the production process of products such as fibers, films, resins and bottles.

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