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Substrate for artificial leather

A technology of artificial leather and substrate, applied in the direction of single-component copolyester rayon, conjugated synthetic polymer rayon, non-woven fabric, etc., can solve the pollution of resin molding machine die and reduce the physical properties of resin molding , polymer yellowing and other problems, to achieve the effect of increased production efficiency, excellent wear resistance, and less decrease in intrinsic viscosity

Active Publication Date: 2016-09-07
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, polymers using diols derived from biomass resources still have lower heat resistance than polymers derived from fossil resources. In the processes generally carried out such as films and resins, if a thermal history close to 300°C is experienced, the thermal decomposition reaction of the polymer using the diol derived from biomass resources is accelerated, and yellowing of the polymer and the viscosity of the polymer occur. As a result, there is an increase in the contamination of the die of the resin molding machine, the generation of foreign matter, and the decrease in the physical properties of the resin molded product. Such problems occur as unsatisfactory phenomena in use.

Method used

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Examples

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Embodiment

[0094] Next, the present invention will be described in more detail by giving experimental examples and examples. However, the present invention is not limited to these examples, and various modifications and corrections are possible without departing from the technical scope of the present invention.

[0095] [Materials used for polymerization]

[0096] ·Ethylene glycol from biomass resources: Manufactured by Changchun Dacheng Group

[0097] (Ethylene glycol=98.138% by weight, 1,2-propanediol=5410ppm, 1,2-butanediol=2390ppm, 2,3-butanediol=6310ppm, 1,4-butanediol=4510ppm).

[0098] - Ethylene glycol derived from fossil resources: manufactured by Mitsubishi Chemical Corporation.

[0099] (Ethylene glycol=99.989% by weight, 1,2-propanediol<15ppm (not detectable), diethylene glycol=110ppm)

[0100] · Terephthalic acid: high-purity terephthalic acid (1,2-propanediol < 15ppm (not detectable)) manufactured by Mitsui Chemicals

[0101] ・Dimethyl terephthalate: SK Chemical Co., Lt...

reference example 1

[0147] For the obtained 20kg of ethylene glycol derived from biomass resources, as a distillation operation, distillation is carried out under the conditions of 40 stages of theoretical plate number, pressure 50mmHg, and reflux ratio of 10, and crude ethylene glycol (containing 1,2-propanediol: 3520ppm). The obtained crude ethylene glycol was heated in a heating tank with a set temperature of 190° C. for 15 hours, and then cooled to room temperature.

[0148] On the other hand, activated carbon (manufactured by Futamura Chemical Industry Co., Ltd.: Taiko SGA) was washed with soft water and dried, and the dried activated carbon was filled in an activated carbon treatment facility. The thickness of the activated carbon layer is 300cm and the space velocity is 0.57hr -1 , The ethylene glycol derived from the biomass resource that has been cooled after the above-mentioned heating flows into the activated carbon layer and is collected. Biomass resource-derived ethylene glycol (re...

reference example 2

[0150] Set the thickness of the activated carbon layer to 200cm and the space velocity to 0.86hr -1 , except that, in the same manner as in Reference Example 1, biomass resource-derived ethylene glycol (refined product) with a 1,2-propanediol content of 910 ppm was finally obtained.

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Abstract

The present invention provides a substrate for artificial leather using polyester excellent in heat resistance during melt molding. That is, there is provided a conjugate fiber containing polyester having a small decrease in intrinsic viscosity during melt molding. A matrix for artificial leather, which is composed of a fiber complex mainly composed of ultrafine fibers with a fiber diameter of 0.01 to 10 μm and an elastic polymer. The polymer constituting the ultrafine fibers is composed of dicarboxylic acid and / or its ester The polyester obtained from the forming derivative and diol contains 15 to 500 ppm of a component derived from 1,2-propanediol in the polyester.

Description

technical field [0001] Since polyester has excellent mechanical strength, chemical stability, and transparency, and is inexpensive, it is one of the most widely used synthetic resins in the world as a fiber material. Among them, polyethylene terephthalate (PET) is excellent in versatility and practicality, and is suitable for use. Background technique [0002] In general, polyethylene terephthalate is manufactured from terephthalic acid or its ester-forming derivatives and ethylene glycol, but these raw materials are usually obtained from fossil resources. Petroleum as a fossil resource is an important raw material in the chemical industry, and there is concern that it will be exhausted in the future. In addition, a large amount of carbon dioxide is emitted during the manufacturing process and incineration, which causes a series of problems such as global warming. Under such circumstances, recycled raw materials and materials with low environmental impact are attracting gre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/435C08G63/16D04H1/4382D04H1/46D06N3/00
CPCC08G63/16D04H1/435D04H1/4382D06N3/0004D06N3/0011D06N3/0036D06N2211/28D06N2209/105D06N2209/10D06N2209/0861D04H1/43838D04H1/4383D04H1/46D01F6/84D01F8/14Y10T428/268D06N2201/0209D06N2209/1635D10B2331/04
Inventor 西村一松崎行博西村诚
Owner TORAY IND INC
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