Universal hyperbranched resin for color paste and preparation method thereof

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...

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

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