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Hyperbranched resin universal for color paste and preparation method thereof

A hyperbranched resin, general-purpose technology, applied in the direction of pigment slurry, etc., can solve the problems of reducing the viscosity of the resin, decreasing the performance of the paint film, softening the hardness of the paint film, etc., and achieving the effect of good compatibility and low cost.

Inactive Publication Date: 2013-12-04
NANHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, reducing the amount of phthalic anhydride in the synthesis of alkyd general-purpose resins can significantly reduce the viscosity of the resin. Although reducing the content of phthalic anhydride can reduce the viscosity, the hardness of the paint film will become softer, which will reduce the performance of the paint film and cannot meet the requirements of the paint film. performance requirements

Method used

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  • Hyperbranched resin universal for color paste and preparation method thereof
  • Hyperbranched resin universal for color paste and preparation method thereof
  • Hyperbranched resin universal for color paste and preparation method thereof

Examples

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Embodiment 1

[0026] The hyperbranched resin that is used to disperse carbon black pigment of the present embodiment, its raw material formula, by mass percentage, is made up of following components:

[0027]

[0028] The above-mentioned color reducing agent is hypophosphorous acid; the above-mentioned antioxidant is triphenyl phosphite; the above-mentioned dilute solvent is xylene;

[0029] Its preparation method is as follows:

[0030] Step 1: After putting glycerin, pentaerythritol, trimethylolpropane, dimethylolpropionic acid, xylene, color reducer and antioxidant into the reactor, feed nitrogen or argon into the reactor simultaneously, and Raise the temperature to 80°C, start stirring, and at the same time, react and dehydrate at 120-160°C for about 6 hours;

[0031] Step 2: When step 1 cools down to below 100°C, put phthalic anhydride (maleic anhydride), lauric acid, benzoic acid and neopentyl glycol into the reactor, heat up to 180-220°C for reflux esterification dehydration, and...

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Abstract

The invention discloses a hyperbranched resin universal for color paste. The hyperbranched resin comprises the following components in percentage by mass: 1-30% of glycerol, 1-20% of trimethylol propane, 1-8% of pentaerythritol, 2.0-10% of neopentyl glycol, 1-40% of dimethylolpropionic acid, 2-20% of phthalic anhydride and / or 1-12% of maleic anhydride, 10-50% of lauric acid, 1-10% of benzoic acid, 0.05-0.2% of a subtractive agent, 0.05-0.2% of an antioxidant, 1-10% of dimethylbenzene and 5-40% of a diluting solvent. The hyperbranched resin universal has excellent pigment dispersion stability, especially for carbon black pigment difficult to disperse; when the hyperbranched resin universal is used as a dispersing resin, a color paste with very stable performance can be prepared only by adding about 5% of dispersant; the hyperbranched resin universal for the color paste can greatly reduce the cost of the color paste and increase economic benefits.

Description

technical field [0001] The method relates to the field of synthetic resins, in particular to a general-purpose color paste resin for coatings, in particular to a general-purpose hyperbranched resin for color paste and a preparation method thereof. Background technique [0002] The general-purpose resin for color paste must not only have good compatibility, but also require good dispersion stability for pigments. [0003] General-purpose resins for colorants generally include aldehyde and ketone resins, acrylic resins, polyesters and alkyd resins. Although these resins have good compatibility, some resins have poor dispersion stability, and the colorants prepared by some resins will make the paint Membrane performance degrades. For example, the acrylic resin-based color paste will reduce the fluidity and wettability of the topcoat, while the aldehyde-ketone resin-based color paste will reduce the flexibility of the paint film, and the polyester and alkyd resin-based color pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/60C08G63/52C09D17/00
Inventor 王延飞唐鹏飞
Owner NANHUA UNIV
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