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

Nitrogen-containing multifunctional liquid rubber polymer as well as preparation and application thereof

A liquid rubber, nitrogen-containing functional group technology, applied in the field of high-performance synthetic rubber, can solve the problem of the preparation strategy of liquid rubber without preparation processability, etc., and achieve the effects of improving rolling resistance, improving performance, and controllable molecular weight

Pending Publication Date: 2020-10-09
RACHEM CHINA CO LTD +2
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Although the above-mentioned patents can obtain functionalized rubber polymers with remarkable effects, there are still some deficiencies, such as no liquid rubber preparation strategy with excellent processability, and secondly, the most common silicone functional group in the functional groups of functionalized liquid polymers. It can effectively improve the dispersion of silica in the rubber matrix, which has a very important impact on the performance of functional rubber. However, there are significant coupling side reactions in the living anion polymerization process of siloxane groups, and there are certain shortcomings.

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
  • Nitrogen-containing multifunctional liquid rubber polymer as well as preparation and application thereof
  • Nitrogen-containing multifunctional liquid rubber polymer as well as preparation and application thereof
  • Nitrogen-containing multifunctional liquid rubber polymer as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] This embodiment provides a novel nitrogen-containing polyfunctional liquid rubber polymer, whose schematic structural formula is as follows:

[0064]

[0065] Among them, the wavy line represents the polymer chain, and the dot represents:

[0066] It is incorporated into the polymer chain in the form of reactive polymerization with double bonds such as isoprene.

[0067] The preparation method of above-mentioned novel nitrogen-containing polyfunctional liquid rubber polymer comprises the following steps:

[0068] (1) Select a 210ml pressure bottle equipped with a stirring magnet, after several times of inert gas purging and replacement, add 40ml of n-hexane after dewatering, impurity and oxygen removal as a reaction solvent, and then add 20ml of 4-chloromethylstyrene (VBC) reagent after removing water, impurities and oxygen.

[0069] (2) Under the environment of ice-water bath, import cyclohexyl imine reagent (being secondary amine reagent) in glass vial with dou...

Embodiment 2

[0074] A novel nitrogen-containing polyfunctional liquid rubber polymer, the structure of which is as follows:

[0075]

[0076] where the dots represent

[0077] The preparation method of above-mentioned novel nitrogen-containing polyfunctional liquid rubber polymer comprises the following steps:

[0078] (1) Select a 210ml pressure bottle equipped with a stirring magnet, after several times of inert gas purging and replacement, add 40ml of n-hexane after dewatering, impurity and oxygen removal as a reaction solvent, and then add 20ml VBC reagent after water, impurity and oxygen removal.

[0079] (2) In an ice-water bath environment, use a double-ended needle to introduce 4-methylpiperidine reagent into the glass bottle. The amount of secondary amine reagent is the actual amount of VBC with a molar ratio of 2:1. The feeding process of secondary amine reagent should be as far as possible. slow. After the addition of the secondary amine reagent was completed, the ice-wa...

Embodiment 3

[0083] A novel nitrogen-containing multifunctional liquid rubber polymer provided in this example has a chemical structure as follows:

[0084]

[0085] Dots indicate

[0086] The preparation method of above-mentioned novel nitrogen-containing polyfunctional liquid rubber polymer comprises the following steps:

[0087](1) Select a 210ml pressure bottle equipped with a stirring magnet, after several times of inert gas purging and replacement, add 40ml of n-hexane after dewatering, impurity and oxygen removal as a reaction solvent, and then add 20ml of VBC reagent after removing water, impurities and oxygen.

[0088] (2) In an ice-water bath environment, use a double-ended needle to introduce the 1-methylpiperazine reagent into the glass bottle. The amount of the secondary amine reagent is the actual amount of VBC with a molar ratio of 2:1. The feeding process of the secondary amine reagent should be as far as possible. slow. After the addition of the secondary amine rea...

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
Ring outer diameteraaaaaaaaaa
Heightaaaaaaaaaa
Number average molecular weightaaaaaaaaaa
Login to View More

Abstract

The invention relates to a nitrogen-containing multifunctional liquid rubber polymer as well as preparation and application thereof. A diene monomer and a nitrogen-containing monomer are subjected toreaction and polymerization, so that a copolymer can be generated, and a nitrogen-containing functional group terminator is inoculated to terminate the polymerization reaction, and the diene monomer is selected from one or more of 1, 3-butadiene or isoprene. Compared with the prior art, the polymer disclosed by the invention has the characteristic of higher functionality, is controllable in molecular weight and can be synthesized into multifunctional liquid rubber, and therefore, the polymer can be used in the field of rubber tires, for example, a rubber coupling agent and can be processed asa matrix rubber material to prepare high-performance rubber. The synthesized novel nitrogen-containing functionalized polymer is used as a carbon black bonding agent for NR / carbon black system rubbermixing, and a rubber material is correspondingly tested, and a test result shows that a sample has good tensile property and wet skid resistance.

Description

technical field [0001] The invention belongs to the technical field of high-performance synthetic rubber, and relates to a nitrogen-containing multifunctional liquid rubber polymer and its preparation and application. Background technique [0002] The main components of rubber materials are high-elastic rubber polymers and reinforcing fillers. The dispersion of fillers in the rubber is not uniform, and the particles that are not well dispersed will have an adverse effect on the rubber. For example, in the tire material, its rolling The resistance and wet skid performance will be reduced. The dispersibility of fillers is mainly related to the interaction between fillers and the interaction between fillers and polymers, so the dispersibility of fillers can be improved by improving these interactions. To improve the interaction between fillers and matrix polymers, an effective method is to prepare high-performance rubber by synthesizing functionalized rubber polymers, mixing r...

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): C08F236/08C08F212/14C08F2/42C08L7/00C08L9/00C08K13/02C08K3/04C08K3/06C08K3/22C08K5/09
CPCC08F236/08C08L7/00C08K2003/2296C08F212/26C08F2/42C08L9/00C08K13/02C08K3/04C08K3/06C08K3/22C08K5/09
Inventor 徐国梁王优夏斌王小荣范汝良谢治国刘军董栋张宁
Owner RACHEM CHINA CO LTD