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PTT PBS collateral fiber

A technology of fiber and propylene glycol ester, which is applied in fiber processing, conjugated synthetic polymer artificial filament, filament/thread forming, etc., which can solve the problems of yellowish color, low molecular weight, and high cost of polylactic acid synthesis

Inactive Publication Date: 2010-05-12
JIANGSU YINGXIANG FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the fiber field, people are increasingly favoring green fibers with environmental protection functions. Polylactic acid is the earliest fully degradable fiber. Lactic acid is mostly produced by biological fermentation, and polylactic acid is synthesized by enzyme catalysis, so the synthesis cost of polylactic acid High, and difficult to control the synthesis process
Aliphatic polyesters are also an important category of degradable polyesters. Among them, polybutylene succinate has a melting point of 115°C, has good stability, is not easy to decompose at room temperature, has good mechanical properties, and has the possibility of processing and application. , is currently a hot spot in the research of degradable polyester. At present, the polybutylene succinate synthesized in China has a low molecular weight and yellowish color, and is mostly used in the field of plastics. The application of polybutylene succinate in the textile field rarely seen

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
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0016] 1. Preparation of polysuccinic acid succinate: the raw materials are butanediol and succinic acid, the molar ratio of addition is 1.12, the catalyst is titanium diethanol and tetrabutyl titanate, and the synthesis of polyester mainly includes esterification and The polycondensation is completed in two steps. In the continuous polymerization process, the esterification reaction is completed through two esterification tanks at normal pressure and reduced pressure, and the polycondensation reaction is completed through two tanks of pre-condensation and final polycondensation.

[0017] Synthetic process of polybutylene succinate:

[0018] condition Ester I Esterification II Precondensation final polycondensation condition Ester I Esterification II Precondensation final polycondensation Reaction temperature / ℃ 140～150 150～160 230～240 230～240 Reaction pressure / Pa 1.2×10 5 60000 2500 75 Residence time / min 7...

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PUM

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Abstract

The invention relates to a preparation method of polytrimethylene 1, 3-terephthalate and poly(butylene succinate) (PTT PBS) collateral fiber, which is characterized by comprising the steps of: obtaining poly(butylene succinate) through chemical polymerization, spinning together with the polytrimethylene 1, 3-terephthalate, respectively melting two different kinds of polymers when in spinning, and finally extruding and combining into the collateral bicomponent fiber by using a spinneret plate.

Description

technical field [0001] The invention relates to the field of fiber preparation, in particular to a method for preparing poly(1,3-trimethylene terephthalate) and poly(butylene succinate) juxtaposed fibers. Background technique [0002] In the fiber field, people are increasingly favoring green fibers with environmental protection functions. Polylactic acid is the earliest fully degradable fiber. Lactic acid is mostly produced by biological fermentation, and polylactic acid is synthesized by enzyme catalysis, so the synthesis cost of polylactic acid Higher, and it is not easy to control the synthesis process. Aliphatic polyesters are also an important category of degradable polyesters. Among them, polybutylene succinate has a melting point of 115°C, has good stability, is not easy to decompose at room temperature, has good mechanical properties, and has the possibility of processing and application. , is currently a hot spot in the research of degradable polyester. At present...

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
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14D01D5/32C08G63/183C08G63/85
Inventor 徐关祥
Owner JIANGSU YINGXIANG FIBER
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