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

Partially oriented poly(trimethylene terephthalate) yarn

一种聚对苯二甲酸丙二醇酯、苯二甲酸丙二醇酯的技术，应用在聚酯变形纱领域，能够解决操作效率下降、变形纱旦数高、纱质量差等问题

Inactive Publication Date: 2008-01-30
EI DU PONT DE NEMOURS & CO
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These efforts were unsuccessful because these practices resulted in higher textured yarn denier, poorer yarn quality, and reduced operating efficiency

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
  • Partially oriented poly(trimethylene terephthalate) yarn
  • Partially oriented poly(trimethylene terephthalate) yarn
  • Partially oriented poly(trimethylene terephthalate) yarn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment I

[0069] Embodiment 1 polymer preparation

[0070] Polytrimethylene terephthalate polymer is prepared from 1,3-propanediol and dimethyl terephthalate in a two-pot process using tetraisopropyl titanate as a catalyst, Tyzor  TPT (registered trademark of E.I. duPont de Nemours and Company, Wilmington, DE) at a concentration of 60 parts per million ("ppm") by weight (micrograms per gram) based on the finished polymer. Molten dimethyl terephthalate was added to 1,3-propanediol and catalyst at 185°C in a transesterification kettle and the temperature was raised to 210°C while methanol was being removed. Titanium dioxide was added to the process as a 20% slurry in 1,3-propanediol, resulting in 0.3 wt% TiO in the polymer 2 . The resulting intermediate was transferred to a polycondensation kettle where the pressure was reduced to 1 mbar and the temperature was raised to 255°C. When the desired melt viscosity is reached, the pressure is increased and the resulting polymer is extrude...

Embodiment II

[0071] The preparation of embodiment II partially oriented yarn

[0072] Yarns were made from the polytrimethylene terephthalate pellets prepared in Example 1 using a conventional remelted single-screw extrusion process and a conventional polyester fiber melt spinning (S-winding) process. The melt spinning process conditions are listed in Table II below. The polymer was extruded through orifices having the shapes and diameters described in Table II. The spinneret assembly was maintained at a temperature such as is required for the polymer temperatures given in Table II. The filamentary stream leaving the spinneret was air quenched at 21°C, bundled, oiled, entangled and collected. The physical properties of the partially oriented yarns of polytrimethylene terephthalate were measured using a tensile tester from Instron Corporation, model 1122, and are listed in Table III.

[0073] Table II

[0074] Example

Cross section

Aperture

...

Embodiment III

[0078] Example III - Single Yarn Stretch

[0079] This example shows that partially oriented yarns produced according to the present invention can be used in subsequent drawing operations. This example also shows that the yarn can be used as a texturing precursor, ie, the yarn of this example is untextured. Partially oriented yarns produced as described in Examples II-A, II-C, II-D and II-E were drawn on a Barmag draw-winder, model DW 48, with a godet temperature of 130°C. The draw speed, draw ratio, and physical properties of the resulting drawn yarn as measured using an Instron Tensile Tester, Model 1122, are listed in Table IV below. Partially oriented yarns produced as described in Examples II-D were drawn at three different draw ratios, reported in Table IV.

[0080] Table IV

[0081] example

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
elongationaaaaaaaaaa
elongationaaaaaaaaaa
elongationaaaaaaaaaa
Login to View More

Abstract

The invention relates to partial orientation yarn which is made from self-polyester polymer, wherein, the polymer includes at least 85 mol percent of poly trimethylene terephthalate, at least 85 mol percent of a repeating unit is composed of a trimethylene unit, and the intrinsic viscosity of the polymer is at least 0.70dl / g. the elongation at break of the partial orientation yarn is at least 110 percent. In addition, the invention also relates to a method of spinning the partial orientation yarn and a method for the continuous tensile deformation of partial orientation feeding yarn.

Description

[0001] This application is an international application PCT / US01 / 06565 with an international filing date of March 1, 2001. The application number entered into China is 018003982, the filing date is November 1, 2001, and the invention name is "polytrimethylene terephthalate Partially oriented yarn" patent application divisional application. technical field [0002] This invention relates to polyester textured yarns. More specifically, the present invention provides polytrimethylene terephthalate partially oriented feed yarns, a continuous stretch-texturing process for false twist texturing of said feed yarns, and polytrimethylene terephthalate textured yarns. Background technique [0003] The production of polyester textured multifilament has been industrialized worldwide for many years. There are many well known texturing processes including crimping, looping, coiling or crimping continuous multifilament. These texturing processes are commonly applied to impart improved pr...

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 Patents(China)
IPC IPC(8): D01F6/62D02G1/02D01F6/84D02G1/08
CPCD01F6/62D02G1/082Y10T428/2913Y10T428/2969
Inventor J·M·霍维尔小J·F·伦顿M·H·瓦特金斯
Owner EI DU PONT DE NEMOURS & CO
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