Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of polyamide and its production method and application

A technology of polyamide and products, applied in the field of low-cost polyamide and its production, can solve the problem of high cost of raw materials

Active Publication Date: 2017-11-17
CATHAY R&D CENT CO LTD +2
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In order to solve the problem of high cost of raw materials used in the synthesis of transparent polyamide in the prior art, the invention provides a polyamide and its production method

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
  • A kind of polyamide and its production method and application
  • A kind of polyamide and its production method and application
  • A kind of polyamide and its production method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0119] The preparation of embodiment 1, nylon 5612

[0120] Under a nitrogen atmosphere, add 30kg of pure water to the reactor, then add 10.56kg (103mol) of pentamethylenediamine (comprising organic carbon from renewable sources meeting the ASTM D6866 standard), stir, add 7.55kg (51mol) of adipic acid and 11.89 kg (51 mol) of dicarbon dibasic acid, and then add 3 g of antioxidant H10 to prepare a nylon salt solution.

[0121] Under a nitrogen environment, the temperature of the oil bath was raised to 230°C. After the pressure in the polymerization kettle rose to 1.73Mpa, the exhaust gas was started. When the temperature in the kettle reached 265°C, the vacuum was pumped to -0.06Mpa, and the vacuum degree was maintained for 20 minutes to obtain Nylon 5612.

[0122] Fill the polymerization kettle with nitrogen to a pressure of 0.5Mpa, start melting and discharging, and use a pelletizer to granulate. After vacuum drying at 80°C for 8 hours, various performance tests were perfor...

Embodiment 2

[0126] Embodiment 2, the preparation of nylon 5612

[0127] In addition to adjusting the addition of pentamethylenediamine in Example 1 to be 9.46kg (92mol), the addition of adipic acid to be 1.35kg (9mol) and the addition of dodecanedioic acid to be 19.18kg (83mol), the same as in Example 1 in the same way. According to embodiment 1, using 1 Characterized by H-NMR, it was confirmed that the target product was obtained. Various performance tests were carried out on the obtained polyamide resin, and the results are shown in Table 1.

Embodiment 3

[0128] Embodiment 3, the preparation of nylon 5612

[0129] In addition to adjusting the addition of pentamethylenediamine in Example 1 to be 11.94kg (117mol), the addition of adipic acid to be 15.36kg (105mol) and the addition of dodecanedibasic acid to be 2.69kg (11mol), the same as in Example 1 in the same way. According to embodiment 1, using 1 Characterized by H-NMR, it was confirmed that the target product was obtained. Various performance tests were carried out on the obtained polyamide resin, and the results are shown in Table 1.

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
melting pointaaaaaaaaaa
melting pointaaaaaaaaaa
degree of polymerizationaaaaaaaaaa
Login to View More

Abstract

The invention provides polyamide and a production method and application thereof. The polyamide is shown as -[(NH-R1-NH)-(OC-R2-CO / OC-R3-CO)]m-, wherein R1 is preferably straight chain alkyl having 3-8 carbon atoms; R2 is preferably straight chain alkyl having 4-8 carbon atoms; and R3 is preferably straight chain alkyl having 6-20 carbon atoms. The polyamide provided by the invention does not need to form transparency by means of addition and modification, so that the problems of sensitivity to the content of additives, aging and migration occurring after a long time, and the like are solved.

Description

technical field [0001] The invention relates to a polymer material and a production method thereof, in particular to a low-cost polyamide and a production method thereof. Background technique [0002] Since the invention of polyamide (nylon, PA) by W.H.Carothers of DuPont in the United States in the 1930s, it has been widely used because of its high mechanical strength, good impact toughness, excellent heat resistance, wear resistance and oil resistance. In various fields of the national economy such as machinery, national defense, chemical industry, transportation, and water conservancy, its production capacity and output have always ranked first among the five major engineering plastics. [0003] However, due to the defects of poor transparency, high water absorption, low impact strength in dry state and low temperature of polyamide, its application in some aspects is limited. For this reason, research on polyamide modification has been carried out extensively at home and...

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): C08G69/26C08G69/28C08L77/06
Inventor 郑毅秦兵兵毛金旺刘驰李乃强刘修才
Owner CATHAY R&D CENT CO LTD