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

Long carbon chain transparent nylon and its synthesis method

A synthesis method and a long carbon chain technology, applied in the field of materials, can solve the problems of restricting the large-scale promotion of solid-phase polymerization, accelerating the discharge of small molecules of by-products, and many production processes of solid-phase polymerization, and improving the notched impact strength and antistatic properties. Excellent ability and processability, and the effect of reducing the process

Active Publication Date: 2017-10-10
ZHONGBEI UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since solid-phase polymerization is generally carried out at 15-30°C below the melting point of the prepolymer, the reaction rate is slow and the reaction time is long, and the production process of solid-phase polymerization is complex and complex, requiring high equipment parameters, and the reaction is slow. It is necessary to ensure that the ratio of functional groups is close to 1:1, and vacuum or air flow is required to accelerate the discharge of small molecules of by-products during the viscosity-increasing stage, thereby increasing the molecular weight of polycondensation products. Therefore, the above conditions limit the large-scale promotion of solid-phase polymerization

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
  • Long carbon chain transparent nylon and its synthesis method
  • Long carbon chain transparent nylon and its synthesis method
  • Long carbon chain transparent nylon and its synthesis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] The raw material composition and synthetic steps of the polyester amide used in the present embodiment are as follows:

[0079](1) Vacuum-dried monomer 2: 1006.6g (5mol) 11-aminoundecanoic acid, 456.6g (4mol) 6-caprolactone, 270.3g (1.25mol) 2,2'-(1,3 -Phenylene)-bisoxazoline was added to the stirred polymerization reactor, and tetrabutyl titanate (17.3 g) of 1% of the total weight of monomer 2 was added as a catalyst, and 500 mL of water was added as a mass transfer and heat transfer Then vacuumize for 5 minutes, pass nitrogen for 5 minutes, and circulate like this for 6 times, so that the reactant exists in the environment under nitrogen protection, and the system pressure in the stirred polymerization reactor is controlled to be 0.2MPa;

[0080] (2) within 2.5 hours, heat the stirred polymerization reactor to 250°C at a uniform speed, and adjust the stirring speed of the stirred polymerization reactor to 40r / min, wherein, when the temperature of the stirred polymeriz...

Embodiment 2

[0085] The raw material composition and synthesis steps of the polyester amide used in this example are the same as those in Example 1.

[0086] This embodiment is a synthetic method of long carbon chain transparent nylon, comprising the following steps:

[0087] (1) Vacuum-dried monomer 1: 116.2g (1mol) hexamethylenediamine, 108.0g (0.65mol) isophthalic acid, 70.8g (0.35mol) sebacic acid were added to the stirred polymerization reactor, Add simultaneously the polyester amide of 8% (23.6g) of monomer 1 gross weight, the long carbon chain carboxylic acid calcium salt of 0.3% (0.9g), the benzoic acid of 2% (5.9g), 0.3% (0.9g) N,N`-di(2,2,6,6-tetramethyl-4-piperidinyl)-1,3-phthalamide, add 100mL water as the medium for mass transfer and heat transfer; then vacuumize for 5min , pass nitrogen for 5 minutes, and circulate like this for 6 times, so that the reactant exists in the environment under nitrogen protection, and the system pressure in the stirred polymerization reactor is ...

Embodiment 3

[0090] The raw material composition and synthesis steps of the polyester amide used in this example are the same as those in Example 1.

[0091] This embodiment is a synthetic method of long carbon chain transparent nylon, comprising the following steps:

[0092] (1) Vacuum-dried monomer 1: 116.2g (1mol) hexamethylenediamine, 149.5g (0.9mol) isophthalic acid, 20.2g (0.1mol) sebacic acid were added to the stirred polymerization reactor, Add simultaneously the polyester amide of 2% (5.7g) of monomer 1 gross weight, the long carbon chain carboxylate calcium salt of 0.2% (0.6g), the benzoic acid of 0.5% (1.4g), 0.2% (0.6g) N,N`-di(2,2,6,6-tetramethyl-4-piperidinyl)-1,3-phthalamide, add 100mL water as the medium for mass transfer and heat transfer; then vacuumize for 5min , pass nitrogen for 5 minutes, and circulate like this for 6 times, so that the reactants are present in the environment under nitrogen protection, and the system pressure in the stirred polymerization reactor is...

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
boiling pointaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
melting pointaaaaaaaaaa
Login to View More

Abstract

The invention discloses a long carbon chain transparent nylon and a synthesis method thereof. The long carbon chain transparent nylon has the following formula I structure: In formula I, a=10-100, b=10-200, c=10-100 , d=10~100, R is polyester amide. The long carbon chain transparent nylon of the present invention has high mechanical properties and light transmittance, low water absorption, excellent processing performance and biological origin, and can be applied to surrounding mechanical parts and electrical mechanical parts of fuel and oil, precision optics Instruments, pressure-resistant windows, observation mirrors, special lamp covers, food packaging films, high-end sports equipment and other fields.

Description

technical field [0001] The invention relates to the field of materials, in particular to a long carbon chain transparent nylon and a synthesis method thereof. Background technique [0002] Transparent polyamide (transparent nylon) is a polymer material with excellent comprehensive properties. It not only has the advantages of high mechanical strength, good thermal stability, and excellent corrosion resistance, but also has the advantages of easy molding and processing, dimensional stability, small linear expansion coefficient, high cost performance, excellent electrical insulation and aging resistance, non-toxic, Odorless, easy to form alloys with other amorphous or semi-crystalline polyamides; not only excellent transparency (transparency even exceeds PC, close to PMMA), but also resistant to environmental stress cracking, oily solvents, scratches, and Wear and other aspects are superior to general transparent polymer materials (such as PS, PC, PMMA, etc.). [0003] Trans...

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): C08G69/44
Inventor 胡国胜张静婷王忠强石哲平师文博方春晖刘冰肖许和伟
Owner ZHONGBEI UNIV
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