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Water-oil dual-purpose dispersion agent as well as preparation method and application thereof

A dispersant, water-oil technology, applied in the direction of pigment slurry, etc., can solve the problems of limited system compatibility, large economic burden, inconvenient use of customers, etc., achieve excellent color development, good dispersion and stability, and save energy consumption Effect

Inactive Publication Date: 2012-05-02
惠州市汉诺新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned types of substances have limited compatibility with the system due to their own structural limitations. For example, some are only suitable for medium and low polarity systems, and some are only suitable for medium and high polarity systems, which will bring inconvenience to customers. , but also increase the greater economic burden

Method used

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  • Water-oil dual-purpose dispersion agent as well as preparation method and application thereof
  • Water-oil dual-purpose dispersion agent as well as preparation method and application thereof
  • Water-oil dual-purpose dispersion agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 1) Into a 100mL four-neck flask, equipped with a thermometer, N 2 , heating and stirring device, add 42 grams of JEFFAMINE M-2070 (polyether monoamine, Hustmans company, average relative molecular weight 2000, EO / PO=31 / 10) and 4.82 grams of ε-caprolactone, be warming up to 160 ℃, dehydration 5 hours, intermediate A was obtained 1 ;

[0045] 2) To 500mL, equipped with thermometer, N 2 , a four-necked flask with a heating and stirring device, add 70 grams of intermediate A 1 15 gram Desmodur N3400 (HDI, NCO%=21.8%, Bayer company), be warming up to 80 ℃, add 0.005 gram T-12 (American gas company), react for 3 hours until NCO% reacts about 92% to obtain target intermediate B 1 .

[0046] 3) Add 3.5 grams of 3-aminopropanol to Intermediate B 1 In the process, raise the temperature to 100°C and react for 5 hours until the amine value is less than 50 mgKOH / g, then cool down to room temperature to obtain the product.

Embodiment 2

[0048] 1) Into a 100mL four-neck flask, equipped with a thermometer, N 2 , heating and stirring device, add 42 grams of JEFFAMIN ED-600 (polyether diamine, average relative molecular weight 600, EO / PO molar ratio=9 / 3.6)) and 4.82 grams of ε-caprolactone, heat up to 160 ° C, dehydrate 6 hours, intermediate A was obtained 2 .

[0049] 2) To 500mL, equipped with thermometer, N 2 , a four-necked flask with a heating and stirring device, add 75 grams of intermediate A 2 , 18 gram Bahydur N3100 (HDI, NCO%=17.4%, Bayer company), be warming up to 80 ℃, add 0.008 gram T-12 (American gas company), react 3 hours to NCO% and react about 90%, obtain the target intermediate Body B 2 .

[0050]3) Add 3 grams of aniline to intermediate B 2 In the process, raise the temperature to 100°C and react for 4 hours until the amine value is less than 50 mgKOH / g, then cool down to room temperature to obtain the product.

Embodiment 3

[0052] 1) Into a 100mL four-neck flask, equipped with a thermometer, N 2 , heating and stirring device, add 42 grams of polyether polyol (polymer polyol EO / PO copolymer, average relative molecular weight 2000, EO / PO=2 / 1) and 2.41 grams of ε-caprolactone, and heat up to 180 ° C , dehydrated for 6 hours to obtain intermediate A 3 .

[0053] 2) 500mL four-neck flask, equipped with a thermometer, N 2 , heating and stirring device, add 82 grams of intermediate A 3 , 18 grams of 2,4,4-trimethyl-1,6-hexamethylene diisocyanate (TMDI, NCO%=39.7%, Bayer Company), warming up to 80°C, adding 0.005 gram of T-12 (American Gas Company), React for several hours until about 90% of the NCO% is reacted to obtain the target intermediate B 3 .

[0054] 3) Add 3.6 grams of p-aminobenzoic acid to intermediate B 3 In the process, raise the temperature to 100°C and react for 2 hours until the amine value is less than 60mgKOH / g, then cool down to room temperature to obtain the product.

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Abstract

The invention discloses a water-oil dual-purpose dispersion agent as well as a preparation method and application thereof and aims at providing a dispersion agent with the advantages of no organic solvent, zero VOC (Volatile Organic Compound), capabilities of meeting the current environment-friendly requirement and being compatible with a waterborne system and a solvent-borne system. The water-oil dual-purpose dispersion agent is prepared by the following steps of: firstly, reacting polyether polyol or polyether polyamine with eta-caprolactone according to the ratio of (4:1)-(1:4) to obtain an intermediate A; secondly, adding 10-25 wt% of polyisocyanates into the intermediate A for reacting to obtain an intermediate B; and thirdly, adding a compound with the molecular formula of YMNH2 into the intermediate B, wherein Y is -OH, -COOH and -SO3H, and M is -Ph and -R; and reacting for 2-5 hours and cooling to be room temperature to obtain the dispersion agent. The water-oil dual-purpose dispersion agent is used for dispersing inorganic pigment, organic pigment and carbon black in a paint and ink system and belongs to the technical field of polymer materials.

Description

technical field [0001] The invention relates to a dispersant, in particular to a water-oil dual-purpose dispersant and its preparation method and use, belonging to the technical field of polymer materials. Background technique [0002] Pigments and fillers are widely used in coatings, inks, and plastics. To disperse pigments and fillers in a liquid system well, it needs to go through three stages: wetting, high-speed shear dispersion, and later stabilization. Some resins with higher polarity Or the wetting agent can play a role in the wetting stage. The high-speed shear aims to break up the pigment and filler aggregates and restore them to the original particle state, so that some of their characteristics such as hue, hiding / transparency, etc. can be revealed, while In the later stage of stabilization, the role of the dispersant is really revealed. It relies on charge interaction (emulsion system), steric hindrance (solvent-based system) or a combination of the two (water-di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/42C08G18/32C08G18/38C08G18/34C08G63/664C09D17/00
Inventor 韩学琴
Owner 惠州市汉诺新材料有限公司
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