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Hyperbranched resin pigment dispersant, preparation method and color paste thereof, and applications of color paste

A technology of pigment dispersant and hyperbranched resin, which is applied in the direction of pigment paste, epoxy resin coating, anti-corrosion coating, etc. It can solve the problems of low dispersion efficiency of color paste, floating color of paint film, and large color difference of finished paint

Inactive Publication Date: 2016-06-29
立邦投资有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the practical application of pigment dispersion and preparation of color paste, there are still low dispersion efficiency of color paste, large color difference in the prepared finished paint, and floating and blooming phenomenon in the paint film

Method used

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  • Hyperbranched resin pigment dispersant, preparation method and color paste thereof, and applications of color paste
  • Hyperbranched resin pigment dispersant, preparation method and color paste thereof, and applications of color paste
  • Hyperbranched resin pigment dispersant, preparation method and color paste thereof, and applications of color paste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Embodiment 1 (9AH30-12.5% ​​MPEG)

[0075] (a) Synthesis of 9AH30

[0076] Under the protection of nitrogen, after heating 320 grams of H4001 to 120 degrees, 39.59 grams of HHPA were added with stirring. Insulate and react for about 1 hour. After the infrared spectrum shows that the absorption peak of the acid anhydride disappears, add 61.63 grams of CarduraE10, heat up to 140 degrees, and insulate for about 5 hours until the acid value is less than 10mgKOH / g. The product 9AH30 has a solid content of about 67%.

[0077] (b) Synthesis of IPDI-MPEG750 adduct

[0078] Under nitrogen protection and at room temperature, to 61.75 gram IPDI, in the mixture of 62.5 gram butyl acetate (BA) solvents and 0.312 gram DBTDL catalyst, slowly add the mixed solution of 312.5 gram MPEG750 and butyl acetate (the weight of MPEG750 and butyl acetate The ratio is 4:1), about 1.5 hours to add. React at room temperature for about 2-3 hours until the content of the isocyanate functional grou...

Embodiment 2

[0089] (a) Synthesis of 9AH30

[0090] Same as Example 1

[0091] (b) Synthesis of IPDI-MPEG750 adduct

[0092] Same as Example 1

[0093] (c) Synthesis of 9AH30-25% MPEG

[0094] Under the protection of nitrogen, heat 230 g of 9AH30 to 80 degrees, then add 0.230 g of DBTDL, stir for 5 minutes, then add 183.8 g of newly prepared IPDI-MPEG750 adduct with slow stirring. Insulate and react for about 5 hours until NCOwt% is less than 0.1wt%. The resulting product had a solids content of about 69%.

[0095] The structural formula of gained product 9AH30-25%MPEG is

[0096]

[0097] In the formula R 1 It is a carbon six-membered ring skeleton; R 2 Corresponding formula (III) structure, where R 5 +R 6 = 7 C; R 3 It is a C6-C15 saturated fatty acid carbon chain skeleton, the average value of y is 22, the average value of x+n+k is: 64-22=42, and the relative ratio of k, n, x is: 25%, 30% , 45%.

Embodiment 3

[0099] (a) Synthesis of 9AH30

[0100] Same as Example 1

[0101] (b) Synthesis of IPDI-MPEG750 adduct

[0102] Same as Example 1

[0103] (c) Synthesis of 9AH30-50% MPEG

[0104]Under the protection of nitrogen, heat 160 grams of 9AH30 to 80 degrees, then add 0.160 grams of DBTDL, stir for 5 minutes, then add 255.8 grams of newly prepared IPDI-MPEG750 adduct with slow stirring. Insulate and react for about 8 hours until NCOwt% is less than 0.1wt%. The resulting product had a solids content of about 70%.

[0105] The structural formula of gained product 9AH30-50%MPEG is

[0106]

[0107] In the formula R 1 It is a carbon six-membered ring skeleton; R 2 Corresponding formula (III) structure, where R 5 +R 6 = 7 C; R 3 It is a C6-C15 saturated fatty acid carbon chain skeleton, the average value of y is 22, the average value of x+n+k is: 64-22=42, and the relative ratio of k, n, x is: 50%, 30% , 20%.

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PUM

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Abstract

The invention discloses a hyperbranched resin pigment dispersant. The hyperbranched resin pigment dispersant possesses a hyperbranched structure, and following functional groups: a, hydroxyl; b, oxethyl (-OC2H4-), and c, hydrophobic carbon chains containing 5 to 18 carbon atoms. The hyperbranched resin pigment dispersant is capable of separating and dispersing pigments, strong anchoring effect with pigment can be achieved, compatibility of pigment with main resin is improved, color paste paint forming stability is improved, chromatic aberration is reduced, and the hyperbranched resin pigment dispersant can be applied to aqueous systems.

Description

technical field [0001] The invention relates to the field of pigment dispersion and color paste. More specifically, it relates to a hyperbranched resin pigment dispersant, a preparation method, a color paste and an application of the color paste. Background technique [0002] As a colorant, the pigment can only exert a good coloring effect if it is uniformly and stably dispersed in the coating film. At present, surfactants and some low-molecular coupling agents are generally used to modify the surface of pigments, change the polarity of the pigment surface, and reduce the agglomeration and flocculation of pigments. However, in the actual application of pigment dispersion and preparation of color paste, there are still low dispersion efficiency of color paste, large color difference of finished paint, and floating and blooming phenomenon of paint film. [0003] Compared with traditional linear polymers, hyperbranched polyester has the advantages of lower viscosity and no ch...

Claims

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Application Information

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IPC IPC(8): C08G18/75C08G18/42C08G18/48C08G63/91C09D17/00C09D5/08C09D133/00C09D167/00C09D167/08C09D163/00C09D201/00C09D7/12
Inventor 李世冰施珠容汪少峰胡剑
Owner 立邦投资有限公司
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