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

Semi-aromatic and aliphatic polyamide block copolymer and preparation method thereof

A technology of aliphatic polyamide and block copolymer, which is applied in the field of semi-aromatic and aliphatic polyamide block copolymer and its preparation, can solve the problems of heavy pollution, low industrialization value and high cost, etc. To achieve the effect of expanding the application field

Active Publication Date: 2013-10-23
KINGFA SCI & TECH CO LTD
View PDF4 Cites 31 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In terms of the preparation process of semi-aromatic polyamides, although there are a large number of patents to synthesize various polyamide copolymers, such as PA6T / 66, PA6T / 6I and PA10T / 1012, etc., but there are few patents and documents about the preparation method of semi-aromatic block polyamides; Chinese patent CN101469070A proposes a method for synthesizing polyamide block polymers, which can Use N,N-dimethylacetamide as the reaction solvent, add LiCl and pyrrole, etc., use diamine and acid chloride as the reaction monomer, respectively obtain 6T and 66 prepolymers, and then mix the two to obtain block Copolymers; this method uses organic solvents, and requires strict water removal, which is very polluting, high in cost, and low in industrialization value; Novitsky et al. (Journal of Polymer Science Part A: Polymer Chemistry. Volume 49, Issue 10, pages 2271-2280) use terephthaloyl-bis(caprolactam) and dodecyl diamine as monomers to react in caprolactam solvent to obtain PA12T macromolecular initiator, which then undergoes anionic polymerization reaction to obtain PA( 12T-b-6) block copolymer; there is no report for the preparation of semi-aromatic and aliphatic polyamide block copolymers that can be realized by utilizing the existing polymerization device for preparing common semi-aromatic polyamides

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
  • Semi-aromatic and aliphatic polyamide block copolymer and preparation method thereof
  • Semi-aromatic and aliphatic polyamide block copolymer and preparation method thereof
  • Semi-aromatic and aliphatic polyamide block copolymer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A1-A4

[0032] Examples A1-A4: Preparation of semi-aromatic polyamide prepolymer

[0033] In the autoclave equipped with magnetic coupling stirring, condensation pipe, gas phase port, feeding port, pressure explosion-proof port, add the reaction raw materials according to the ratio in Table 1; the amount of benzoic acid is the total amount of diamine, diacid, lactam and amino acid 2.5% of the amount of substance, the weight of sodium hypophosphite is 0.1% of the weight of other feeds except deionized water, and the weight of deionized water is 30% of the weight of the total feed; Heat up to 220 within hours o C, the reaction mixture was heated at 220 o C was stirred for 1 hour, and then the temperature of the reactant was raised to 230 o C; response at 230 o The constant temperature of C and the constant pressure of 2.2MPa continued for 2 hours, and the pressure was kept constant by removing the formed water. After the reaction was completed, the material was discharged, and the p...

Embodiment B5-B9

[0034] Examples B5-B9: Preparation of Aliphatic Polyamide Prepolymer

[0035]In the autoclave equipped with magnetic coupling stirring, condensation pipe, gas phase port, feeding port, pressure explosion-proof port, add the reaction raw materials according to the ratio in Table 1; the amount of benzoic acid is the total amount of diamine, diacid, lactam and amino acid 2.5% of the amount of substance, the weight of sodium hypophosphite is 0.1% of the weight of other feeds except deionized water, and the weight of deionized water is 30% of the weight of the total feed; Heat up to 200 within hours o C, the reaction mixture was heated at 200 o C was stirred for 1 hour, and then the temperature of the reactant was raised to 210°C with stirring o C; response at 210 o The constant temperature of C and the constant pressure of 2.2MPa continued for 2 hours, and the pressure was kept constant by removing the formed water. After the reaction was completed, the material was discharge...

Embodiment C10-C18

[0036] Examples C10-C18: Preparation of Semiaromatic and Aliphatic Polyamide Block Copolymers

[0037] Add the reaction raw materials according to the ratio in Table 2 in the autoclave equipped with magnetic coupling stirring, condenser, gas phase port, feeding port, and pressure explosion-proof port. The weight of deionized water is 30% of the total feeding weight; vacuumize and fill high-purity nitrogen as a protective gas, and heat up to 200 within 2 hours under stirring. o C, the reaction mixture was heated at 200 o C was stirred for 1 hour, and then the temperature of the reactant was raised to 210°C with stirring o C; response at 210 o The constant temperature of C and the constant pressure of 2.2MPa continued for 2 hours, and the pressure was kept constant by removing the formed water. After the reaction was completed, the material was discharged, and the prepolymer was at 80 o C under vacuum drying 24 hours, obtain prepolymerized product; Described prepolymerized ...

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

No PUM Login to View More

Abstract

The invention discloses a semi-aromatic and aliphatic polyamide block copolymer, wherein the mole percentage content of the semi-aromatic polyamide block is 40-99%, the mole percentage content of the aliphatic polyamide block is 1-60%, the number of repeat units of the semi-aromatic polyamide block is 2-10, and the number of the repeat units of the aliphatic polyamide block is 2-10; the preparation method comprises the following steps: firstly, preparing a semi-aromatic polyamide prepolymer and an aliphatic polyamide prepolymer; polymerizing the two prepolymers again to obtain a block prepolymer, and increasing the viscosity of solid phase to obtain the block polymer. According the preparation method, the feed ratio of the semi-aromatic polyamide prepolymer to the aliphatic polyamide prepolymer is controlled to obtain the semi-aromatic and aliphatic polyamide block copolymer with controllable block length and controllable block number, thereby expanding the application fields of the polyamide material and meeting the performance demands of different environments on the polyamide material.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a semi-aromatic and aliphatic polyamide block copolymer and a preparation method thereof. Background technique [0002] Polyamide is widely used because of its good comprehensive properties, including mechanical properties, heat resistance, wear resistance, chemical resistance and self-lubrication, low coefficient of friction, certain flame retardancy, and easy processing. It is suitable for filling and modifying with glass fiber and other fillers to improve performance and expand application range. In recent years, semi-aromatic polyamides have been focused on development due to their better heat resistance and mechanical properties. [0003] In terms of the preparation process of semi-aromatic polyamides, although there are a large number of patents for the synthesis of various polyamide copolymers, such as PA6T / 66, PA6T / 6I and PA10T / 1012, etc., but about semi-aromatic block p...

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): C08G69/26C08G69/28
Inventor 张传辉袁志敏蔡彤旻吉继亮曾祥斌曹民夏世勇殷年伟饶湘
Owner KINGFA SCI & TECH 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