Acrylic acid terpolymer dispersing agent and preparation method and applications thereof

A terpolymer, dispersant technology, applied in chemical instruments and methods, chemical/physical processes, transportation and packaging, etc., can solve the problem of failing to effectively bind the sterically hindered segment of the resin compatible chain, and achieve storage. Good stability, easy product availability and excellent blooming properties

Active Publication Date: 2017-08-18
优卡化学(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing dispersants of acrylate copolymers are mostly binary copolymers, which cannot effectively combine resin compatible chains, pigment affinity groups and steric hindrance segments, so there are limitations in application.

Method used

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  • Acrylic acid terpolymer dispersing agent and preparation method and applications thereof
  • Acrylic acid terpolymer dispersing agent and preparation method and applications thereof
  • Acrylic acid terpolymer dispersing agent and preparation method and applications thereof

Examples

Experimental program
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preparation example Construction

[0039] The preparation method of this acrylic acid terpolymer dispersant comprises the steps:

[0040] (1) Dissolving an initiator accounting for 35 wt% of the total amount of the initiator in an organic solvent accounting for 35 wt% of the total amount of the organic solvent, and preheating to 60-90° C. to obtain the first solution.

[0041] (2) monomer A, monomer B, monomer C, chain transfer agent and the initiator accounting for 55wt% of the total amount of the initiator are dissolved in an organic solvent accounting for 55wt% of the total amount of the organic solvent to obtain the second solution.

[0042] (3) The second solution obtained in step (2) is added to the first solution at a uniform speed within 2-4 hours; after adding, keep warm for 4-6 hours, add the remaining initiator and organic solvent, and heat up to 70 -100°C, continue to keep warm for 4-24 hours to obtain a dispersant solution, add a precipitant 5-20 times the volume of the dispersant solution to preci...

Embodiment 1

[0045] (1) Dissolve 2,2'-azobisisobutyronitrile (35wt%) of 2,2'-azobisisobutyronitrile total amount (0.5 parts by weight) in 35wt% of butyl acetate total amount (20 parts by weight) In butyl acetate, preheat to 60°C to obtain the first solution.

[0046] (2) 10 parts by weight of myristyl methacrylate, 40 parts by weight of methyl methacrylate, 5 parts by weight of methacrylamide, 0.3 parts by weight of octadecyl mercaptan and 2,2'-azo 55wt% of the total amount of diisobutyronitrile (0.5 parts by weight) of 2,2'-azobisisobutyronitrile was dissolved in 55wt% of butyl acetate (20 parts by weight) of the total amount of butyl acetate to obtain a second solution.

[0047](3) Add the second solution obtained in step (2) to the first solution at a uniform speed within 2 hours; after the addition, keep warm for 4 hours, and add the remaining 2,2'-azobisisobutyronitrile and acetic acid For butyl ester, heat up to 70°C, keep warm for 24 hours to obtain a dispersant solution, add n-hex...

Embodiment 2

[0049] (1) be dissolved in the propylene glycol butyl ether acetate accounting for propylene glycol butyl ether acetate total amount (30 weight parts) 35wt% benzoyl peroxide total amount (1 weight part) 35wt% benzoyl peroxide, Preheat to 70°C to obtain the first solution.

[0050] (2) 15 parts by weight of cetyl acrylate, 50 parts by weight of ethyl acrylate, 10 parts by weight of N-methylol acrylamide, 0.8 parts by weight of dodecyl mercaptan and the total amount of benzoyl peroxide (1 55 wt% of benzoyl peroxide is dissolved in 55 wt% of propylene glycol butyl ether acetate total amount (30 parts by weight) of propylene glycol butyl ether acetate to obtain a second solution.

[0051] (3) The second solution obtained in step (2) is added to the first solution at a uniform speed within 4 hours; after adding, keep warm for 5 hours, add the remaining benzoyl peroxide and propylene glycol butyl ether acetate, and heat up Keep warm at 90°C for 16 hours to obtain a dispersant solut...

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Abstract

The invention discloses an acrylic acid terpolymer dispersing agent and a preparation method and applications thereof. The acrylic acid terpolymer dispersing agent is prepared from the following components in parts by weight: 10-20 parts of a monomer A, 40-60 parts of a monomer B, 5-15 parts of a monomer C, 0.5-2 parts of an initiator, 0.3-1.2 parts of a chain transfer agent, and 20-40 parts of an organic solvent, wherein the monomer A is an acrylic acid long-chained alkyl ester monomer, the monomer B is an acrylic acid short-chained alkyl ester monomer, and the monomer C is an amino-containing acrylic acid monomer. The acrylic acid terpolymer dispersing agent is simple in preparation technology; and by using a specific step-by-step addition method, the conversion rate of the monomers can be increased, and the system viscosity can be effectively reduced.

Description

technical field [0001] The invention relates to the field of new material chemistry, in particular to an acrylic terpolymer dispersant and its preparation method and application. Background technique [0002] In the production of coatings, the wetting and dispersing of solid particles such as pigments and fillers is an important step. The wetting, dispersibility and stability of these solid particles not only affect the rheology of the coating, but also affect the final performance of the coating to varying degrees. . Usually, adding an appropriate amount of wetting and dispersing additives to the system can significantly improve the performance of the coating. Traditional wetting and dispersing agents are generally molecules with amphiphilic structures, among which molecules with ionic structures are the main ones, such as acids, amines and their salts, etc. Non-ionic molecules are generally aliphatic polyethers , The hydrophilic polyether segment makes it suitable for wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/56C08F220/58C09B67/46B01F17/34B01F17/22C09K23/22C09K23/34
CPCC08F220/14C08F220/18C09B67/006C09B67/009C08F220/1803C08F220/1804C09K23/16C08F220/1818C08F220/56C08F220/58C08F220/1802
Inventor 施丹王锋
Owner 优卡化学(上海)有限公司
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