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Silicone-modified polyurethane-based fiber and method for manufacturing same

A manufacturing method, silicone technology, applied in the direction of one-component polyurethane rayon, fiber chemical characteristics, one-component synthetic polymer rayon, etc., can solve poor adhesion resistance, poor processability, low sliding property, and low softness and other problems, to achieve the effect of excellent spinnability

Active Publication Date: 2017-11-28
SHIN ETSU CHEM IND CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] So far, polyurethane resin nanofibers have been reported (Patent Documents 4 and 5), but they have low sliding properties, softness, blocking resistance, and insufficient water resistance depending on the application, which has become a problem.
In addition, nanofibers made of silicone resin (Patent Document 6) and silsesquioxane (Patent Document 7) have also been reported, but such fibers made of silicone resin crosslinked three-dimensionally and at high density There are problems of lack of flexibility and poor processability

Method used

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  • Silicone-modified polyurethane-based fiber and method for manufacturing same
  • Silicone-modified polyurethane-based fiber and method for manufacturing same
  • Silicone-modified polyurethane-based fiber and method for manufacturing same

Examples

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Embodiment

[0123] Although the present invention will be specifically described below based on examples and comparative examples, the present invention is not limited to these examples. In addition, "part" and "%" in an Example and a comparative example are a mass standard unless otherwise indicated. In addition, the evaluation items in each of the following Examples and Comparative Examples were implemented by the method described below.

[0124] In the following examples, the number average molecular weight (Mn) is a value in terms of polymethyl methacrylate (PMMA) measured by gel permeation chromatography (GPC). In addition, GPC measurement was performed under the conditions of apparatus: HLC-8320GPC (manufactured by Tosoh Corporation), solvent: tetrahydrofuran (THF), and resin concentration: 0.1%.

[0125]

Synthetic example 1

[0126] (Synthesis Example 1: Synthesis of SiPU1)

[0127] A reaction container having a stirrer, a reflux condenser, a thermometer, a nitrogen blowing tube, and an opening was prepared. While replacing the inside of the reaction vessel with nitrogen, 200 g of polytetramethylene glycol (trade name "PolyTHF1000", manufactured by BASF Japan, number average molecular weight 1,000, hydroxyl value 113 mgKOH / g), 1,4- 38 g of butanediol, 0.5 g of double-terminal silicone diol (n=10 in compound (2-1)), and 591.8 g of dimethylformamide (DMF). Heating and stirring was started, and after the system became uniform, 156.0 g of 4,4'-methylenebis(phenylene isocyanate) (MDI) was added at 50°C, and then the temperature was raised to 80°C for reaction. The reaction was carried out until the 2,270 cm of free isocyanate groups determined by infrared absorption spectroscopic analysis -1 The absorption disappears. Then, 52.6 g of DMF and 276.2 g of methyl ethyl ketone (MEK) were added to obtain a...

Synthetic example 2

[0128] (Synthesis Example 2: Synthesis of SiPU2)

[0129] A reaction container having a stirrer, a reflux condenser, a thermometer, a nitrogen blowing tube, and an opening was prepared. While replacing the inside of the reaction vessel with nitrogen, 200 g of polytetramethylene glycol (trade name "PolyTHF1000", manufactured by BASF Japan, number average molecular weight 1,000, hydroxyl value 113 mgKOH / g), 1,4- 38 g of butanediol, 5 g of double-terminal silicone diol (n=10 in compound (2-1), 599.4 g of dimethylformamide (DMF). Heating and stirring was started, and after the system became uniform, 156.6 g of 4,4'-methylene bis(phenylene isocyanate) (MDI) was added at 50°C, and then the temperature was raised to 80°C for reaction. The reaction was carried out until the 2,270 cm of free isocyanate groups determined by infrared absorption spectroscopic analysis -1 The absorption disappears. Then, 53.3 g of DMF and 279.7 g of methyl ethyl ketone (MEK) were added to obtain a solut...

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Abstract

Provided is a fiber formed from a resin containing a silicone-modified polyurethane resin. With the present invention, a characteristic fiber having excellent flexibility, slipping ability, blocking resistance, heat retaining property, water vapor permeability, water repellency, and spinnability can be provided.

Description

technical field [0001] The present invention relates to a fiber formed from a resin comprising a silicone-modified polyurethane resin and a method for producing the fiber. Background technique [0002] Generally, resin fibers are mainly obtained by methods such as dry spinning, melt spinning, and wet spinning depending on the type. Electrospinning (electrospinning, electrospinning, melt electrospinning) is known as a method for producing a fiber structure having a small fiber diameter (for example, refer to Patent Documents 1 to 3). The electrospinning method is to apply a high voltage between the nozzle tip of the syringe containing the solution containing the polymer and the melt obtained by melting the polymer, and the collector substrate, and use the electrostatic repulsion force to make the polymer extremely fine. A spinning method that captures polymers to obtain ultrafine fiber structures and nonwoven fabrics in one stage. Usually, the fiber structure is solidified ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/70C08G18/61C08G18/65D01F6/78
CPCC08G18/65D01F6/70D01F6/78D01D5/003D04H1/728D04H1/4358C08G18/61C08L2205/16
Inventor 服部初彦米田善纪田中正喜小城义尚佐藤浩正饭野匠太梅津基昭田中稔久井出皓子冈本理乃
Owner SHIN ETSU CHEM IND CO LTD
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