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Bulk polymer and preparation method and application thereof

A polymer, comb polymer technology, applied in the polymer field, can solve the problems of high viscosity, high cost, difficult mass and heat transfer, etc.

Active Publication Date: 2021-02-05
联泓(江苏)新材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production cost control of the existing method has basically been pressed to the limit of the industry, so reducing transportation and packaging costs has become one of the directions for cost reduction, so how to increase the effective solid content of the product to further reduce transportation and packaging costs has become an urgent problem to be solved
[0006] The existing free radical polymerization method to prepare this type of polymer, due to the high molecular weight and high viscosity of the polymer, it faces great difficulties in mass transfer and heat transfer, and it is difficult to prepare products with good performance and high effective solid content
[0007] In order to solve this problem, the method of desolventization after homogeneous polymerization is used to produce corresponding products, but this production method involves the evaporation of solvent and the subsequent crushing of solids, which makes the production cost of products with high solid content relatively high. High, only used in a small range of applications, it is difficult to be used in the industrial range

Method used

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  • Bulk polymer and preparation method and application thereof
  • Bulk polymer and preparation method and application thereof
  • Bulk polymer and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] Preparation of step 1-initiator (sulfamic acid acetal water-soluble resin):

[0092] In this example, p-aminobenzenesulfonic acid with an initial mass fraction of 10-40% and 2-25% phenol are used to prepare an aqueous solution with a mass content of 25-50% by adding water, heated to 50-100°C, and adding sulfuric acid to adjust the pH of the system In the range of 3<pH<5, formaldehyde solution with a mass fraction of 8-45% is slowly added dropwise to the system for polycondensation reaction, and the dropping time is controlled within 1-3 hours. After the dropwise addition is completed, add sodium hydroxide to the system, adjust the pH value of the system to 8-9, continue to maintain the temperature at 50-100°C, and add urea aqueous solution with a mass fraction of 1-5% to the system for alkaline condensation. Condensation time 2 ~ 7h. After the alkaline condensation is completed, add sodium hydroxide to the system to adjust the pH value to 10-12, and control the tempera...

Embodiment 2

[0104] Step 1—Preparation of initiator (sulfamic acid acetal water-soluble resin): the initiator prepared in Example 1 was used.

[0105] Step 2 - Purification and alkoxylation of starter

[0106] Purify and separate the starter obtained in step 1, and keep the weight average molecular weight: 1000-2000g / mol, 2000-3000g / mol, 3000-5000g / mol, 5000-7000g / mol.

[0107] Weigh the initiators in different molecular weight ranges, add potassium hydroxide whose mass fraction is 0.01% to 0.3% of the initiator mass, dehydrate and dry, control the moisture content of the initiators to be less than 500ppm, and remove impurities, purify and separate the initiators The initiator and the solvent dimethyl sulfoxide are put into the alkoxylation reaction kettle according to the mass ratio of 90:10. After nitrogen replacement and deoxygenation, the solution is heated to 120-170°C, and then ethylene oxide is passed through Addition reaction is carried out according to the molar ratio of starter:...

Embodiment 3

[0113] Step 1—Preparation of initiator (sulfamic acid acetal water-soluble resin): the initiator prepared in Example 1 was used.

[0114] Step 2 - Purification and alkoxylation of starter

[0115] Purify and separate the starter obtained in step 1, and keep the weight average molecular weight: 1000-2000g / mol, 2000-3000g / mol, 3000-5000g / mol, 5000-7000g / mol.

[0116] Weigh the initiators in different molecular weight ranges, add potassium hydroxide whose mass fraction is 0.01% to 0.3% of the initiator mass, dehydrate and dry, control the moisture content of the initiators to be less than 500ppm, and remove impurities, purify and separate the initiators The initiator and the solvent dimethyl sulfoxide are put into the alkoxylation reaction kettle according to the mass ratio of 90:10. After nitrogen replacement and deoxygenation, the solution is heated to 120-170°C, and then ethylene oxide is passed through Addition reaction is carried out according to the molar ratio of starter:...

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Abstract

The invention discloses a bulk polymer as well as a preparation method and application thereof. The polymer is an anionic nonionic comb-shaped polymer, and anions in the polymer are anionic groups with large steric hindrance, such as at least one of sulfonic acid groups, nitro groups and phosphonic acid groups; and the non-ionic group is an alkoxy group. Raw materials for preparing the anionic nonionic comb-shaped polymer comprise an initiator and an epoxy compound, and monomers for preparing the initiator comprise at least one first monomer containing active hydrogen and at least one second monomer containing an anionic group or containing an active site to which the anionic group is easy to graft. According to the invention, polymers with different properties can be prepared, the solid content of the polymer is high, the effective solid content is close to 100% under the condition of no moisture absorption, and the transportation cost can be effectively saved.

Description

[0001] This application claims the priority of the following earlier application: the patent application number 201911371109.5 submitted to the State Intellectual Property Office of China on December 26, 2019, and the invention title is "a bulk polymer and its preparation method and application" . The entirety of said prior application is incorporated by reference into this application. technical field [0002] The invention belongs to the field of polymers, and in particular relates to a bulk polymer and its preparation method and application. Background technique [0003] For the carbon skeleton as the main chain, the comb polymer formed by grafting different functional groups on the carbon skeleton according to different needs is a kind of special product that can meet the needs of different industries and has a wide range of uses. This type of polymer is widely used as a dispersant, so there are strict requirements on the graft density and distribution of functional gro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G14/08C08G14/073C04B24/22C04B103/30
CPCC08G14/08C08G14/06C04B24/226C04B2103/302
Inventor 牛峰陈明亮张晨辉徐俊李磊李方
Owner 联泓(江苏)新材料研究院有限公司
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