Polyester resin having improved adhesion strength for binder and polyester fiber using same

A technology of polyester resin and polyester fiber, which is applied in the field of polyester resin for adhesives, can solve the problems of reducing the uniformity of the physical properties of polyester fibers, high fluidity, and reduced melt viscosity, etc., so as to improve the spinning process. The effect of uniformity, uniformity of physical properties, and improved adhesive strength

Active Publication Date: 2021-07-23
HUVIS CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] As described above, the polyester resin of the sheath that melts at a high temperature in the nozzle part has the following problems: as a low-melting point material, its melt viscosity decreases sharply, fluidity becomes too large, resulting in uneven fiber cross section (eccentricity, etc.), Curved yarns and thread breakage during spinning reduce the processability and reduce the uniformity of the physical properties of the manufactured polyester fibers

Method used

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  • Polyester resin having improved adhesion strength for binder and polyester fiber using same
  • Polyester resin having improved adhesion strength for binder and polyester fiber using same
  • Polyester resin having improved adhesion strength for binder and polyester fiber using same

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Embodiment 1 to 6

[0058] The core layer uses polyethylene terephthalate with a melt viscosity of about 2300 poise at 280°C, and the skin layer uses polyester resin for adhesives. The weight ratio of the skin layer to the core layer is 50:50 through conventional The composite spinning process of the present invention produced the polyester fiber for binders with improved processability.

[0059] The polyester resin for the adhesive is prepared through the following steps: adding terephthalic acid (TPA) and ethylene glycol (EG) to an ester reaction kettle, and performing conventional polymerization at 258°C to prepare a poly Ethylene phthalate polymer (PET oligomer), the reaction rate is about 96%. The obtained polyethylene terephthalate (PET) contains 2-methyl-1,3-propanediol accounting for about 42 mol% of diol components, and 2-methyl-1,3- Pentanediol was mixed at the content ratio shown in Table 1 below, and then a transesterification catalyst was added, and transesterification was performed...

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Abstract

The present invention relates to a polyester resin having an improved adhesion strength for a binder and a polyester fiber using same. The polyester resin for a binder comprises: a terephthalic acid or an ester-forming derivative thereof as an acid component; and 2-methyl-1,3-propanediol, 2-methyl-1,3-pentanediol, and ethylene glycol as a diol component, whereby the polyester resin largely decreases neither in melt viscosity even at high temperatures, nor thus in adhesion at high temperatures.

Description

technical field [0001] The present invention relates to a polyester resin for binders with improved adhesive strength and a polyester fiber using the polyester resin, and to a polyester fiber having excellent thermal adhesiveness and improved spinning processability with improved processability Adhesive polyester resin. Background technique [0002] Polyester is an environmentally friendly material with excellent mechanical properties and excellent heat resistance and chemical resistance, etc., and can be used in various fields requiring lightweight and high physical properties. Recently, polyester fibers represented by polyethylene terephthalate (PET) play an increasingly important role in the field of fibers such as nonwoven fabrics. In particular, increasing demand for thermally adhesive fibers useful for garment interlinings, automotive interior materials, and the like, which use polyester resins as adhesive components, is one example. [0003] Therefore, efforts to im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/183D01F6/62D01F8/14D01D5/34D04H1/435
CPCC08G63/183D04H1/435D01F8/14D01F6/62D01D5/34C08G63/16D04H1/43828
Inventor 申铉昱李敏成金成烈朴成崙
Owner HUVIS CORP
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