Universal hyperbranched resin for color paste and preparation method thereof

A hyperbranched resin, general-purpose technology, applied in the direction of pigment paste, etc., can solve the problems of reducing the viscosity of the resin, the performance of the paint film, and the inability to meet the performance requirements of the paint film, and achieves the effect of good compatibility and low cost.

Inactive Publication Date: 2016-01-20
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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  • Universal hyperbranched resin for color paste and preparation method thereof
  • Universal hyperbranched resin for color paste and preparation method thereof
  • Universal hyperbranched resin for color paste and preparation method thereof

Examples

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Embodiment 1

[0026] The raw material formula of the hyperbranched resin for dispersing carbon black pigments of this embodiment, in terms of mass percentage, consists of the following components:

[0027]

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

[0029] The preparation method is as follows:

[0030] Step 1: After putting glycerin, pentaerythritol, trimethylolpropane, dimethylolpropionic acid, xylene, color reducing agent and antioxidant into the reactor, simultaneously pour nitrogen or argon into the reactor, and Warm up 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 the temperature in step 1 is lowered to below 100°C, put phthalic anhydride (maleic anhydride), lauric acid, benzoic acid and neopentyl glycol into the reaction kettle, and heat to 180-220°C for reflux esterification dehydration and heat preservation;

[0032] Step 3: After ho...

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

Claims

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Application Information

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