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

A kind of carbon dioxide-based polyurethane amide copolymer and preparation method thereof

A technology of polyurethane amide and carbon dioxide is applied in the field of carbon dioxide-based polyurethane amide copolymer and its preparation.

Active Publication Date: 2019-04-19
佛山市巴盛诺新材料科技有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional synthesis method of polyurethane amide uses diisocyanate, which is a highly active component, expensive and highly toxic, as a blocking agent, which does not meet the development purpose of sustainable green chemistry

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 carbon dioxide-based polyurethane amide copolymer and preparation method thereof
  • A kind of carbon dioxide-based polyurethane amide copolymer and preparation method thereof
  • A kind of carbon dioxide-based polyurethane amide copolymer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0023] Specific implementation methods (the raw materials are all different, and the different parts have been highlighted)

[0024] The test methods used in the following examples are conventional methods unless otherwise specified, and the raw materials and reagents used, if not otherwise specified, are commercially available raw materials and reagents such as conventional commercial purchases.

[0025] The invention will be further described below in combination with specific embodiments. These examples are only typical descriptions of the present invention, but the present invention is not limited thereto.

Embodiment 1

[0027]

[0028] In a 50ml autoclave, add 5.8g of hexamethylenediamine and 11.4g of caprolactone, and feed N at normal temperature. 2 to 1.0MPa, and then under the conditions of 100°C and 300 rpm, the reaction was completed after 6 hours. After depressurization, directly add 11.6g of hexamethylene dicarbamate to the reaction kettle for transesterification, the temperature is 160°C, and pass N 2 Demethanol, the time is 3h. Then 50 ul of tetrabutyl titanate was added, stirred for 15 minutes, vacuumed, and the temperature was gradually raised to 230°C. Vacuum polycondensation can be done for 2h. The polyurethane amide synthesized above was dissolved in DMSO, and then purified by sedimentation with ethanol. 1-2 g of sample 1 was taken and dissolved in DMSO for NMR analysis. The purified polyurethane amide was pressed into a film, and the tensile strength, elongation at break and impact strength were measured. The results are shown in Table 1.

Embodiment 2

[0030]

[0031] In a 50ml autoclave, add 5.8g of hexamethylenediamine and 11.4g of caprolactone, and feed N at normal temperature. 2 to 1.0MPa, and then under the conditions of 100°C and 300 rpm, the reaction was completed after 6 hours. After depressurization, directly add 13.0g octamethylene dicarbamate to the reaction kettle for transesterification, the temperature is 160°C, and pass N 2 Demethanol, the time is 3h. Then 50 ul of tetrabutyl titanate was added, stirred for 15 minutes, vacuumed, and the temperature was gradually raised to 230°C. Vacuum polycondensation can be done for 2h. The synthesized polyurethane amide was dissolved in DMSO, and then purified by precipitation with ethanol.

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 carbon dioxide based polyurethane copolymer containing an amide chain segment and a preparation method thereof. The preparation method comprises the following step: with dicarbamate and diamide diol as reactants, carrying out catalytic synthesis so as to obtain the polyurethane copolymer containing the amide chain segment, wherein the reaction temperature is controlled tobe 200 to 250 DEG C, the reaction pressure is controlled to be 0 to 300 Pa, and a catalyst is one or two selected from the group consisting of titanium-based catalysts and tin-based catalysts. The method provided by the invention has the main characteristics of simple reaction operation, short reaction cycle, product stability, etc. The copolymer prepared by using the method provided by the invention has the advantages of rich amide and urethane structures, good thermal stability, high mechanical strength, excellent light transmittance, excellent comprehensive properties of polymer materialslike polyurethane and polyamide, and high industrial utilization values.

Description

technical field [0001] The invention relates to a new method for copolymerizing diurethane and diamide diol synthesized with carbon dioxide to form polyurethane amide, in particular to a carbon dioxide-based polyurethane amide copolymer and a preparation method thereof. Background technique [0002] Nylon is a general term for polymers containing amide groups in the repeating units of the main chain of the macromolecule. It is a type of crystalline polymer with strong polarity, hydrogen bonds between molecules and certain reactivity. Among the five major engineering plastics, nylon has the largest output, the most varieties, and the most widely used. Now the world's annual consumption has exceeded 10,000 tons. Long carbon chain nylon, such as nylon 1010 and nylon 1212, is a new long carbon chain nylon that is synthesized from sebacic acid or dodecane dibasic acid through multiple steps such as nitrilation, amination, neutralization, and polymerization. After years of hard w...

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): C08G71/04C08G69/40
CPCC08G69/40C08G71/04
Inventor 孟跃中覃家祥蒋俊俏肖敏王拴紧韩冬梅许泳行陆景华
Owner 佛山市巴盛诺新材料科技有限公司