中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

59 records (took 0.022 seconds)

    PRODUCTION OF EXTENSIBLE NONWOVEN FABRIC HAVING GOOD DURABILITY
    21.
    发明专利
    PRODUCTION OF EXTENSIBLE NONWOVEN FABRIC HAVING GOOD DURABILITY 失效

    公开(公告)号：JPS6452872A

    公开(公告)日：1989-02-28

    申请号：JP20707887

    申请日：1987-08-19

    Applicant: KURARAY CO

    Inventor： KOGAME KUNIO ,  MAKIMURA MASARU ,  ASHIDA TETSUYA

    IPC: D06M11/00 ,  D01F6/46 ,  D01F6/94 ,  D01F8/06 ,  D01F8/16 ,  D04H1/4358 ,  D04H1/4374 ,  D04H1/4382 ,  D04H1/46 ,  D04H1/485 ,  D04H1/552 ,  D06M11/84 ,  D06M13/02 ,  D06M13/08 ,  D06M13/52 ,  D06M23/00 ,  D06M101/00 ,  D06M101/16 ,  D06M101/18 ,  D06M101/20 ,  D06M101/22 ,  D06M101/32 ,  D06M101/38

    Abstract: PURPOSE: To obtain a stretchable nonwoven fabric having good durability by subjecting a nonwoven fabric formed from the blended yarns of fibers A comprising a specific thermoplastic polyurethane and a non-elastic polymer with multi-component fibers B comprising non-elastic polymers to a shrinking treatment, removing the non-elastic component of the fibers A, and forming the ultrafine fiber bundles of the component B. CONSTITUTION: An organic diisocyanate is reacted with a chain extender and a polyesterdiol which has an average mol.wt. of 800-3,000 and is obtained by the reaction of 3-methylpentanediol-1,5 with a dicarboxylic acid. The obtained thermoplastic polyurethane is blended with a non-elastic polymer having different solvent solubility, and the blend is melted and spun of form the multi-component fibers A. The multi- component fibers A are blended with multi-component fibers B obtained by spinning at least two kinds of non-elastic polymers, and subsequently processed into the interlaced non-woven fabric. The fibers A are shrunk, and the non-elastic polymers are removed from the fibers A. The fibers B are processed into ultrafine fiber bundles to obtain the flexible nonwoven fabric having rich elasticity, excellent hydrolysis resistance and excellent shape-retainability.

    MULTICOMPONENT FIBER
    22.
    发明专利
    MULTICOMPONENT FIBER 失效

    公开(公告)号：JPS6375108A

    公开(公告)日：1988-04-05

    申请号：JP22158186

    申请日：1986-09-18

    Applicant: KURARAY CO

    Inventor： KOGAME KUNIO ,  MAKIMURA MASARU ,  KOMORI SHINJI

    IPC: D01D5/36 ,  D01F8/04 ,  D01F8/06 ,  D01F8/12 ,  D01F8/14 ,  D01F8/16 ,  D03D15/00 ,  D04H1/4382 ,  D04H1/541

    Abstract: PURPOSE:To obtain the title multicomponent fibers, consisting of plural incompatible polymers, having a cross section with an inner layer of an island-in-sea structure and outer layer of an island-in-sea structure of reversed constituent components and specific length and shape of each boundary line thereof and useful as nonwoven fabrics having special feeling, etc. CONSTITUTION:Multicomponent fibers, obtained by blending and melting 60pts. 6-nylon with 40pts. low-density PE, extruding the resultant blend through a nozzle hole, cooling and cutting the extrudate to give blended pellets of an island-in-sea structure in which the 6-nylon becomes an island component and the low-density PE becomes a sea compo nent, subsequently extruding the pellets through a spinneret using an extruder, cooling the extrudate and winding the cooled extrudate, consisting of two or more kinds of incompatible polymers and having a noncircular cross-sectional structure with an inner layer 2 having a structure of sea [polymer (A)]4'-island [polymer (B)]4 and an outer layer 1 having a structure of island [polymer (A)]5'-sea [polymer (B)]5, a ribbed boundary line 3 between the inner layer 2 and the outer layer 1 and a length (l1) of the boundary line 3 satisfying the relation thereof to the circumference (l0) of a round corresponding to the cross-sectional area (S) of the inner layer expressed by the formula l1>=1.2l0.

    PRODUCTION OF HOMOGENEOUS THERMOPLASTIC POLYURETHANE
    24.
    发明专利
    PRODUCTION OF HOMOGENEOUS THERMOPLASTIC POLYURETHANE 失效

    公开(公告)号：JPS6215219A

    公开(公告)日：1987-01-23

    申请号：JP15448485

    申请日：1985-07-12

    Applicant: KURARAY CO

    Inventor： YAMASHITA SADAO ,  KOGAME KUNIO ,  GOTO NOBUTAKA

    IPC: C08G18/00 ,  C08G18/08 ,  C08G18/65

    Abstract: PURPOSE:To obtain the titled polyurethane containing a small amount of gelatinous material mass with a small variation range of melt viscosity, by reacting a high polymer diol having a specific molecular weight and low-molecular diol with an organic diisocyanate continuously in an extruder while adjusting the molar ratio thereof. CONSTITUTION:A high-polymer diol having 500-3,000 average molecular weight and low-molecular diol having

    THERMOPLASTIC POLYURETHANE HAVING EXCELLENT THERMOFORMABILITY
    26.
    发明专利
    THERMOPLASTIC POLYURETHANE HAVING EXCELLENT THERMOFORMABILITY 失效

    公开(公告)号：JPH02191621A

    公开(公告)日：1990-07-27

    申请号：JP27404889

    申请日：1989-10-20

    Applicant: KURARAY CO

    Inventor： YAMASHITA SADAO ,  KOGAME KUNIO

    IPC: C08G18/65

    Abstract: PURPOSE:To obtain a thermoplastic polyurethane having specific melt fluidity ratio, excellent melt fluidity and thermoformability by reacting a specific high- molecular weight diol with organic diisocyanate and a specific low-molecular weight compound in a specific ratio. CONSTITUTION:A high-molecular weight diol (e.g. polybutylene adipate) having 500-3,000 average molecular weight is reacted with an organic diisocyanate (e.g. 4,4,-diphenylmethane diisocyanate) and a low-molecular weight compound (e.g. ethylene glycol) having

    PRODUCTION OF LEATHER-LIKE SHEET
    27.
    发明专利
    PRODUCTION OF LEATHER-LIKE SHEET 失效

    公开(公告)号：JPH02169776A

    公开(公告)日：1990-06-29

    申请号：JP32448088

    申请日：1988-12-21

    Applicant: KURARAY CO

    Inventor： ASHIDA TETSUYA ,  MAKIMURA MASARU ,  KOGAME KUNIO

    IPC: D04H1/482 ,  D06M11/00 ,  D06M13/02 ,  D06M13/188 ,  D06M15/693 ,  D06M101/00 ,  D06M101/12 ,  D06M101/16 ,  D06M101/18 ,  D06M101/20 ,  D06M101/22 ,  D06M101/30 ,  D06M101/34 ,  D06N3/00

    Abstract: PURPOSE:To obtain the title sheet which is flexible with a sense of fulfillment by shrinking an interlaced nonwoven fabric which is composed of island-in-sea type conjugated fibers containing polyamide as the island component and low density polyethylene as the sea component in a benzoic acid solution, adding an elastic polymer, and removing the sea component. CONSTITUTION:A fiber-interlaced nonwoven fabric which is mainly composed of islands-in-sea type conjugated fibers containing polyamide as the island component and a low-density polyethylene as the sea component is treated with an aqueous solution mainly containing benzoic acid to shrink the surface area of the nonwoven fabric by 20 to 50%. Then, a polyurethane elastic polymer is added, and the low density polyethylene in the multiple-component fibers is dissolved off with hot toluene, when needed, raised, and dyed to give a leather-like sheet being flexible, multi-dyed and reduced fluffing.

    METHOD FOR MELT SPINNING
    28.
    发明专利
    METHOD FOR MELT SPINNING 失效

    公开(公告)号：JPH01118618A

    公开(公告)日：1989-05-11

    申请号：JP27421987

    申请日：1987-10-28

    Applicant: KURARAY CO

    Inventor： ASHIDA TETSUYA ,  MAKIMURA MASARU ,  KOGAME KUNIO

    IPC: D01D5/36 ,  D01F8/04 ,  D01F8/06 ,  D01F8/12 ,  D01F8/16

    Abstract: PURPOSE:To prevent or suppress occurrence of aggregation or melt sticking between islands, by blending an additive for reducing surface tension between polymers with a polymer in producing a conjugate fiber having an island-in-sea structure by a melt spinning method. CONSTITUTION:An additive for reducing surface tension between polymers is blended with either or both of two polymers to reduce the surface tension between molten polymers for producing a conjugate fiber having an island-in-sea structure of an island component 1 and sea component 2 by a melt spinning method. A thermoplastic polyvinyl alcohol prepared by block copolymerizing the polymer chain with paraffinic parts, etc., are preferred as the additive.

Patent Agency Ranking