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Bulk hydrophilic funtionalization of polyamide 46

A technology of polyamide and body, which is applied in the field of polyamide 46 body hydrophilic functionalization, which can solve the problems of no flexibility and so on

Inactive Publication Date: 2014-07-09
ENCUBATOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The film of EP2060315 is brittle and inflexible, so if strength is desired it needs to be made relatively thick

Method used

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  • Bulk hydrophilic funtionalization of polyamide 46
  • Bulk hydrophilic funtionalization of polyamide 46
  • Bulk hydrophilic funtionalization of polyamide 46

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Polyamide 46 (Stanyl TW300, M n ~24000 g / mol) was heated in an oven for 3 h to 50±2°C, and then dried to constant weight. Gradually, 10 g of dry polyamide were added to 80 mL of ≥98% formic acid (1.22 g / mL at 25 °C) and stirred gently for 2 h to obtain a continuous dispersion at this concentration. Then, 10 mL of 99.8% ethanol (0.791 g / mL at 25°C) and 42 mL of >99.5% dimethylsulfoxide (1.10 g / mL at 25°C) were added to the mixture. Then, the solution was poured into a 500 ml three-necked round bottom flask immersed in a water bath and connected to a thermometer. Then add 1.82 g of anhydrous AlCl 3 (Purity ≥ 99.9%). The temperature was then maintained at 75±2°C for 1 h. Dissolve AlCl completely in the polymer solution 3 Afterwards, lower the temperature to room temperature. Then, 10 mL of ≥99% acetaldehyde (0.785 g / mL at 25 °C) was slowly added, which is attributed to the exothermic reaction of the aldehyde and the aluminum complex. The flask was fitted with a cond...

Embodiment 2

[0047] 15 g of polyamide 46 (Stanyl TW300, M n~24000g / mol) in an oven at 55±2°C for 1h. Disperse the dried polyamide 46 into 100 mL, ≥98% formic acid solution (1.22 g / mL, at 25 °C) by mixing and warming at 50 ± 2 °C. After this process, 20 mL of formaldehyde solution at a concentration of ~37% in water was added to the mixture. Raise the temperature and keep it at 50±2°C for 1h. After the reaction, the temperature was adjusted to room temperature to obtain a viscous solution. Then, 250 mL of methanol (≥99%) was added to the cloudy solution and mixed for 5 min. The highly viscous polymer was removed by phase separation in a decanter. This stage was repeated 2 times to remove any residue of formaldehyde. The polymer paste was dried in an oven at 50 °C for 6 h.

Embodiment 3

[0049] 15 g of polyamide 46 (Stanyl TW300, M n ~24000g / mol) in an oven at 55±2°C for 1h. Disperse the dried polyamide 46 into 100 mL of ≥98% formic acid (1.22 g / mL at 25 °C) by stirring. After this process, 20 mL of ≥99.5% dimethyl sulfoxide (1.10 g / mL at 25 °C) and 42 mL of ≥99.5% dimethyl sulfoxide (1.10 g / mL at 25 °C) were added to the mixture . The temperature was raised and held at 67 °C for 1 h. After the reaction, the temperature was lowered to room temperature to obtain a transparent orange-red solution. Then, 11.34 mL of >99% acetaldehyde (0.785 g / mL at 25 °C) was added to the solution. After that, the temperature was fixed at 70±2°C for 20 minutes. After lowering the temperature to 25±2°C, add 250mL of methanol (≥99%) to the pale yellow solution and mix for 5min. The suspended white precipitate of the modified polyamide was taken out by centrifugation twice at 9000×g for 10 min. This phase is repeated 2 times. The modified polymer was then removed and dried a...

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Abstract

A modified polymer as result of a bulk functionalization of polyamide 46 (PA 46) is presented, as well as methods for synthesizing the modified polymer. This functionalization of PA 46 is performed to provide a homogenous semi-permeable polyamide 46 capable of different charges and different porosities with particles of nanoscale size in order to replace or improve other polyamide fibers used in the textile industry, filtering processes, selective sorption, controlled release devices, phase transfer catalysts, chromatography media, biocompatible capsules, artificial skins, organs, bone void repair as well as in cell bioreactors and incubators, dental impliments, medical devices, clothing, detectors, perfusion devices, in regenerative medicine, and fuel cells.

Description

technical field [0001] The present invention relates to a method for bulk modification of polyamide 46 (PA46) and a novel bulk hydrophilic modification of polyamide 46. This method is used to synthesize novel bulk nonionized, hydrophilic hydroxymethylated, hydroxyethylated, hydroxypropylated derivatives and anionic carboxymethylated, carboxyethylated, succinylated and / or Maleated derivatives. The invention also relates to the use of the novel polymers in various embodiments. Background technique [0002] Due to the highly ordered structure and low ratio of methylene to amide groups, polyamide 46 has a very limited solvent range for processing and modification. Furthermore, the solvents for PA46 do not dissolve the polymer to a high degree as a continuous phase (it only disperses at high concentrations in relevant solvents). Therefore, bulk modification is very difficult. [0003] The present invention is directed to the bulk functionalization of polyamide 46 to provide h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/48B01J27/125
CPCA61L15/26A61L27/18C08G69/26C08G69/48C08G69/50C08L77/02C08L77/06
Inventor 哈米德扎·巴尔吉穆罕默德·塔希尔扎德
Owner ENCUBATOR
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