Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Polyurethane fiber

一种聚氨酯纤维、聚氨酯类的技术，应用在聚氨酯类纤维领域，能够解决香味嗜好性高、香料残留、尚无可得到具备香气持续性的布帛的报道等问题，达到耐久性优良、劣化的程度小的效果

Inactive Publication Date: 2015-09-23
TORAY OPELONTEX CO LTD
View PDF13 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, unfortunately, the taste of the fragrance is very high, and it is very uneconomical to prepare a product that expresses a variety of fragrances corresponding to it in combination with personal sensibility.
In addition, when a specific fragrance is preliminarily given at the time of manufacture, when the consumer subsequently adds a desired fragrance when washing, etc., the desired fragrance may not be obtained because the pre-applied fragrance remains, and the purpose may be compromised.
In addition, this method does not meet the above-mentioned requirements for repeatedly resetting the fragrance, the requirement for a brisk fragrance
[0009] As far as the applicant knows, although there are reports of fragrances with persistent fragrance, the status quo is that there is no report on fabrics with persistent fragrance.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polyurethane fiber
  • Polyurethane fiber
  • Polyurethane fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0209] Put 2.06 moles of 4,4'-MDI into a container with respect to 1 mole of tetramethylene ether glycol with a molecular weight of 3500, use triethylamine as a catalyst, and react at 90°C, and the obtained reaction product is heated under N , N-dimethylacetamide (DMAc) was fully stirred to dissolve it to obtain a solution. Next, a DMAc solution containing ethylenediamine (abbreviated as EDA) as a chain extender is added to the solution in which the reaction product is dissolved, and then a DMAc solution containing diethylamine as an end-capping agent is added, and then, as a stabilizer with A solid content ratio of 1% was added by adding an addition polymer of divinylbenzene and p-cresol ("Metacrol" (registered trademark) 2390 manufactured by DuPont Co., Ltd.) to prepare a polyurethane urea solution PUU-A with a total solid content of 33% by weight. . The resulting solution had a viscosity of about 2800 poise at 40°C. The polymer had an intrinsic viscosity of 0.98 when meas...

Embodiment 2

[0213] Add 1.70 moles of 4,4'-MDI to 1 mole of tetramethylene ether glycol with a molecular weight of 1800 in a container, react at 90°C, and place the resulting reaction product in N,N-dimethylacetamide (DMAc) was thoroughly stirred to dissolve it to obtain a solution. Next, a DMAc solution containing ethylenediamine (abbreviated as EDA) as a chain extender is added to the solution in which the reaction product is dissolved, and then a DMAc solution containing diethylamine as an end-capping agent is added, and then, as a stabilizer with A solid content ratio of 1% was added by adding an addition polymer of divinylbenzene and p-cresol ("Metacrol" (registered trademark) 2390 manufactured by DuPont Co., Ltd.) to prepare a polyurethane urea solution PUU-B with a total solid content of 30% by weight. . The resulting solution had a viscosity of about 3000 poise at 40°C. The polymer had an intrinsic viscosity of 1.05 when measured at a solution concentration of 0.5 g / 100 mL in DMA...

Embodiment 3

[0217]87.5 moles of tetrahydrofuran after dehydration and 12.5 moles of 3-methyltetrahydrofuran after dehydration are dropped into a reactor with a stirrer, under a blanket of nitrogen at a temperature of 10° C. Mixture) under the existence of carrying out 8 hours polyreaction, with sodium hydroxide aqueous solution, reaction end liquid is carried out neutralization, obtain the copolytetramethylene ether glycol (comprising 12.5 mol % from 3 - Structural unit (a)) of methyltetrahydrofuran, which is used as polyalkylene ether glycol. 4.9 moles of MDI were charged to 1 mole of the copolymerized tetramethylene ether glycol in a container, and reacted at 90° C., and the resulting reaction product was fully dissolved in N,N-dimethylacetamide (DMAc). dissolve. Next, a DMAc solution containing EDA as a chain extender was added to the solution in which the reaction product was dissolved, and then an addition polymer of divinylbenzene and p-cresol (DuPont Co., Ltd. "Metacrol" (registe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
linear densityaaaaaaaaaa
boiling pointaaaaaaaaaa
melting pointaaaaaaaaaa
Login to View More

Abstract

Provided is a fiber having lasting scent properties, i.e., that maintains a scent over a long period of time after absorbing a scent component. The fiber is a polyurethane fiber having lasting scent properties that is characterized by the overall dissipation amount of a scent component 48 hours after absorption of the scent component being 0.1-1000 µg / g·h.

Description

technical field [0001] The present invention relates to a polyurethane-based fiber excellent in fragrance retention for washing softeners and / or detergents containing fragrance components. Background technique [0002] There is a high expectation to enjoy the fragrance in daily life, and the fragrance is easy to adhere to various fibrous structures such as bedding such as cloth for clothing, and does not disappear through volatilization after adhesion, and has a strong fragrance even in a small amount , spice formulations, and techniques for encapsulating spices are being researched and developed. [0003] In addition, in recent years, it is preferred to impart fragrance during daily washing. A representative method is to use detergents, fabrics or clothes that continue to have a pleasant fragrance even during drying and naturally for a long time after drying under the action of washing softener or detergent added with fragrance, softener. A large number of fragrance comp...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/70D03D15/56
CPCC11D3/50D06M13/005C11D3/505D01F6/70D06M2101/38
Inventor 田中利宏佐佐木康平野康二藤田泰史森章恭
Owner TORAY OPELONTEX CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com