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

Copolymerization nylon composition and preparation thereof

A technology of copolymerized nylon and its composition, which is applied in the field of lactam-based anionic polymerized copolymerized nylon and its preparation, can solve the problems of high processing precision, high production cost, complex molds, etc., achieve short polymerization time, fast reaction speed, Equipped with simple effects

Inactive Publication Date: 2009-07-01
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
View PDF0 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The injection molding machine has to bear a lot of pressure, the mold is complicated, the processing precision is high, and the production cost is high.

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
  • Copolymerization nylon composition and preparation thereof
  • Copolymerization nylon composition and preparation thereof
  • Copolymerization nylon composition and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0072] The preparation method of the present invention is described in detail below:

[0073] Preparation

[0074] A method for preparing nylon copolymer, comprising the steps of:

[0075] (a) providing a mixture of:

[0076] Component (A) 100 parts by weight of one or more lactams, component (B) 1-100 parts by weight of nylon of other structures, component (C) 0-100 parts by weight of inorganic filler or polymer filler, component (D) 0.01-10 parts by weight of anionic polymerization initiator, 0.01-50 parts by weight of component (E) activator;

[0077] Wherein the nylon of other structures of the component (B) is a homopolymer or copolymer containing amide repeating units on the main chain of the molecule, and the nylon of other structures of the component (A) and the amide of the lactam of the component (B) different repeating units;

[0078] (b) Polymerizing the mixture in step (a) to obtain copolymerized nylon.

[0079] Preferably, the mixing sequence of the mixture ...

Embodiment 1

[0100]25 g of nylon 1212 (Mη=20000) was dried at 80° C. for 12 hours. Put 100 g of caprolactam in a three-necked flask, heat and melt, and remove water under reduced pressure. Add nylon 1212 to caprolactam melt and dissolve under nitrogen protection. Add 0.18 g of sodium hydroxide (based on the total weight of the sodium hydroxide solution), remove water under reduced pressure, and maintain the solution at 180°C. Then pour 0.4ml of TDI (toluene diisocyanate) and mix evenly, pour it into a mold at 180°C, polymerize for 20 minutes and take it out to obtain the finished product.

[0101] The NMR spectrum of the prepared polymer is as figure 1 shown. If there is no copolymerization between nylon 6 and nylon 1212, only two absorption peaks should be displayed on the NMR spectrum. However, the sample prepared by the method desired to be protected by this patent presents four peaks, indicating that a copolymerization reaction has taken place between the two components.

Embodiment 2

[0103] Dry 4 g, 8 g or 12 g of nylon 3Me6T (chemical structure shown in Formula 1 below) at 80° C. for 12 hours, respectively. Put 100 g of caprolactam in a three-necked flask, heat and melt, and remove water under reduced pressure. Add 3Me6T to caprolactam melt and dissolve under nitrogen protection. Add 0.2 g of solid sodium hydroxide, remove water under reduced pressure, and maintain the solution at 180°C. Then pour 0.4ml of MDI and mix evenly, pour it into a mold at 180°C, polymerize for 20 minutes and take it out to get the finished product.

[0104] The chemical structure of Molecular Formula 1 3Me6T:

[0105] Mechanical property tests showed that the strength and modulus of the obtained copolymer were significantly improved, as shown in Table 1.

[0106] Table 1 Mechanical properties of PA6 / 3Me6T copolymer

[0107]

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 relates to a copolymeric nylon composition and a method for preparing the same. In the composition, 1 to 100 weight portions of nylon and 0 to 100 weight portions of filler are dissolved in 100 weight portions of lactam to obtain a mixture of the nylon, the filler and the lactam; and the mixture is added with 0.01 to 10 weight portions of anion polymerization initiator and 0.01 to 50 weight portions of activating agent and has polymerization reaction for 5 to 120 minutes at a temperature of between 100 and 250 DEG C to generate the copolymeric nylon. Compared with the prior art, the method has the characteristics of low reaction temperature, simple equipment requirement and the like.

Description

technical field [0001] The invention relates to a polymer material and a preparation method thereof, in particular to a lactam-based anionic polymerized copolymerized nylon and a preparation method thereof. Background technique [0002] Nylon is one of the most used plastics and is widely used in fibers, films and various injection and extrusion products. However, the use of homopolynylon is often limited due to its single performance. Copolymerization is one of the commonly used methods for nylon modification. Through structural design, materials with low melting point, high solubility, transparency and various microstructures can be prepared. [0003] Copolymerized nylon, like homopolynylon, mostly adopts hydrolytic polymerization. Copolymerized nylon is usually prepared by hydrolytic polymerization of lactam and its hydrolyzed products, as well as multifunctional amines and acids. However, high pressure, high temperature (250° C.) and long time (more than 10 to 20 hou...

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
IPC IPC(8): C08L77/00C08L77/02C08G69/18C08K3/00C08K7/14
Inventor 王晓春
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) 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