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

Steady state solution of polymer prepared from nitrogen-oxygen heterocyclic compound, preparation method, and use thereof

A nitrogen-oxygen heterocycle, steady-state solution technology, applied in the field of polymer steady-state solution, can solve problems such as inability to effectively control the molecular weight of polymers, limited application scope, and reduced commercial value of the final product.

Active Publication Date: 2012-04-04
TAIWAN POWDER TECH CO LTD +1
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this invention cannot effectively control the molecular weight of the obtained polymer, and the ring-opening reaction uses a halogen compound to carry out and will remain in the final product, which will reduce the final product under the current demand for halogen-free materials. commercial value
[0006] Furthermore, when benzene derivatives containing nitrogen and oxygen heterocycles are used as epoxy resin hardeners, they usually need to be reacted with epoxy resin after a period of time above 200°C, and the scope of application is limited. The ring-opened compound disclosed in No. 6225440 will seriously affect the hardening time and properties of epoxy resin due to the uncertain molecular weight

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
  • Steady state solution of polymer prepared from nitrogen-oxygen heterocyclic compound, preparation method, and use thereof
  • Steady state solution of polymer prepared from nitrogen-oxygen heterocyclic compound, preparation method, and use thereof
  • Steady state solution of polymer prepared from nitrogen-oxygen heterocyclic compound, preparation method, and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] [Example 1: Preparation of a steady-state solution of a polymer obtained from the nitrogen-oxygen heterocyclic compound 1]

[0078] Add 450 grams of nitrogen-oxygen heterocyclic compound 1 and 115 grams of cyclohexanone into a 1-liter four-necked reaction flask equipped with a heating device, a thermometer, a stirrer, a cooling pipe, a dropping device and a decompression recovery device In the process, under the condition of stirring, heat to 70°C and maintain at 70°C until the nitrogen-oxygen heterocyclic compound 1 is completely dissolved to form the solution 1 to be polymerized. The gel time at 200°C measured by the aforementioned measurement method (B) is about 633 seconds, and measure its GPC spectrum with the gel permeation chromatography (gel permeation chromatography, GPC) of JASCO company, the result is as follows Figure 1A shown; and further measure the infrared spectrum of the gelled nitroxide 1 with the Fourier transform infrared spectrometer of PerkinElmer ...

Embodiment 2

[0084] [Example 2: Influence of the first solvent type]

[0085] Prepare solution 1' to be polymerized in the same manner as in Example 1, and carry out ring-opening polymerization in the temperature control mode shown in Table 2 to prepare steady-state solution 1', except that 115 grams of N,N-dimethyl Formamide was substituted for cyclohexanone to prepare Polymerization Solution 1'.

[0086] Table 2

[0087]

[0088] It can be seen from Table 2 that the stable solution of the present invention can control the gel time of the finished product by selecting the reaction temperature and controlling the reaction time, which also exists when other solvents are used.

Embodiment 3

[0089] [Example 3: Influence of the type of nitrogen-oxygen heterocyclic compound]

[0090] 1293 grams of nitrogen-oxygen heterocyclic compound 2 and 322 grams of N,N-dimethylformamide were added to Yu-1 equipped with heating device, thermometer, stirrer, cooling pipe, dripping device and decompression recovery device. In a four-necked reaction flask of 1 liter, under the condition of stirring, it is heated until the nitrogen-oxygen heterocyclic compound 2 is completely dissolved to form the solution 2 to be polymerized, and the gel time at 200°C is measured by the aforementioned measurement method (B). is about 551 seconds.

[0091] Subsequently, the solution 2 to be polymerized was subjected to a ring-opening polymerization reaction in a staged temperature-controlled manner as shown in Table 3. When the reaction time reaches 260 minutes, add acetone (about 540 grams) at 25° C., make the temperature rapidly drop to about 78° C., then cool to normal temperature to terminate t...

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
boiling pointaaaaaaaaaa
softening pointaaaaaaaaaa
Login to View More

Abstract

The invention relates to a steady state solution of a polymer prepared from a nitrogen-oxygen heterocyclic compound, and a preparation method thereof. The steady state solution is prepared by carrying out a ring-opening polymerization reaction for the nitrogen-oxygen heterocyclic compound represented by the following formula I or II, wherein R1, R2, R3, W1, W2, m, n, p and q are described in the specification. The steady state solution of the present invention can be adopted as a curing agent for curing epoxy resins.

Description

technical field [0001] The present invention relates to a steady-state solution of a polymer prepared from a nitrogen-oxygen heterocyclic compound and a method for preparing the solution; in particular, the present invention relates to a polymer prepared from a nitrogen-oxygen heterocyclic compound and optionally Steady-state solutions of polymers with formulated gel times and methods for their preparation. Background technique [0002] In the plastics industry, it is often used in the polymeric matrix in thermoplastic polymers containing The structure of benzene derivatives containing nitrogen and oxygen heterocycles can be polymerized by ring-opening reaction to provide polymers with phenol structure. The polymer has excellent thermal properties (such as heat resistance, high glass transition temperature (Tg), flame resistance, etc.) and chemical and mechanical properties due to its high proportion of benzene rings and carbon-nitrogen bonds in its structure . In additi...

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): C08G73/02C08L79/02C08G59/62
Inventor 廖世灏廖志伟徐玄浩陈宪德林宗贤
Owner TAIWAN POWDER 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