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Preparation method of water-based aldehyde ketone resin emulsion

A technology of aldehyde-ketone resin and emulsion, applied in the field of preparation of water-based aldehyde-ketone resin emulsion, can solve the problems of difficulty in emulsification and poor hot-melt fluidity of aldehyde-ketone resin, and achieve the effect of reducing viscosity and improving hot-melt fluidity

Active Publication Date: 2021-04-16
湖南林特科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hot-melt fluidity of aldehyde and ketone resins is poor, making it difficult to emulsify

Method used

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  • Preparation method of water-based aldehyde ketone resin emulsion
  • Preparation method of water-based aldehyde ketone resin emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of preparation method of aqueous aldehyde-ketone resin emulsion of the present invention comprises the following steps:

[0026] (1) Accurately weigh 500 g of aldehyde and ketone resin and 30 g of β-cyclodextrin, first add the aldehyde and ketone resin to a closed jacketed reaction kettle for heating and dissolving, and add modifier for pretreatment after the solid is completely melted, Pretreatment for 30 minutes, heat preservation and pressure preservation of the hot-melt treated resin;

[0027] (2) 30g of emulsifier is dissolved in 450ml of distilled water, heated to 110°C, stirred to form a transparent liquid, and raised to an appropriate temperature and pressure;

[0028] (3) The aqueous solution of modified aldehyde and ketone resin melted fluid and emulsifier with heat preservation and pressure is pumped into a high-pressure homogenizer for homogeneous emulsification. The emulsification temperature is 90°C, the emulsification pressure is 50Mpa, and the emu...

Embodiment 2

[0032] A kind of preparation method of aqueous aldehyde-ketone resin emulsion of the present invention comprises the following steps:

[0033] (1) Accurately weigh 500 g of aldehyde and ketone resin and 30 g of β-cyclodextrin, first add the aldehyde and ketone resin to a closed jacketed reaction kettle for heating and dissolving, and add modifier for pretreatment after the solid is completely melted, Pretreatment for 30 minutes, heat preservation and pressure preservation of the hot-melt treated resin;

[0034] (2) 30g of emulsifier is dissolved in 450ml of distilled water, heated to 110°C, stirred to form a transparent liquid, and raised to an appropriate temperature and pressure;

[0035] (3) Pump the modified aldehyde and ketone resin molten fluid and the aqueous solution of the emulsifier into the high-pressure homogenizer for homogeneous emulsification. The emulsification temperature is 90°C, the emulsification pressure is 10-90Mpa, and the emulsification time is 4min. T...

Embodiment 3

[0039] A kind of preparation method of aqueous aldehyde-ketone resin emulsion of the present invention comprises the following steps:

[0040] (1) Accurately weigh 500 g of aldehyde and ketone resin and 30 g of β-cyclodextrin, first add the aldehyde and ketone resin to a closed jacketed reaction kettle for heating and dissolving, and add modifier for pretreatment after the solid is completely melted, Pretreatment for 30 minutes, heat preservation and pressure preservation of the hot-melt treated resin;

[0041] (2) 30g of emulsifier is dissolved in 450ml of distilled water, heated to 110°C, stirred to form a transparent liquid, and raised to an appropriate temperature and pressure;

[0042] (3) Pump the modified aldehyde and ketone resin molten fluid and the aqueous solution of the emulsifier into the high-pressure homogenizer for homogeneous emulsification. The emulsification temperature is 90°C, the emulsification pressure is 50Mpa, and the emulsification time is 1-8min. Th...

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Abstract

The invention discloses a preparation method of a water-based aldehyde ketone resin emulsion. The method comprises the following steps: S1, gradually heating and melting solid aldehyde ketone resin, and adding a modifier to obtain pretreated aldehyde ketone resin hot-melt fluid, wherein the modifier is beta cyclodextrin; S2, adding an emulsifier into distilled water, heating to a set temperature, and uniformly mixing to obtain an emulsifier mixed solution; and S3, uniformly mixing the pretreated aldehyde ketone resin hot melt fluid with the emulsifier mixed solution, carrying out high-temperature and high-pressure homogenizing emulsification, and then cooling and depressurizing to obtain a finished product, namely the water-based aldehyde ketone resin emulsion. Beta-cyclodextrin is added as a modifier, and a closed jacketed reaction kettle high-pressure homogenizer online emulsification process is utilized to prepare the water-based aldehyde ketone resin emulsion with uniform components and stable performance.

Description

technical field [0001] The invention belongs to the field of aldehyde and ketone resin emulsions, and relates to a preparation method of water-based aldehyde and ketone resin emulsions. Background technique [0002] Most of my country's children's toys, beds, tables and chairs and other industries have begun to use water-based wood paint, and most of them are based on acrylic emulsion. However, acrylic emulsion has certain defects in specific occasions, such as slow drying, poor mechanical strength and poor thermal stability, etc., which limit its application. The drying time of the existing water-based acrylic emulsion for woodware is two days, which makes the semi-finished product of the coating factory occupy a large area, has low production efficiency and high production cost. [0003] Water-based aldehyde and ketone resin emulsion, suitable for any resin system such as acrylic, alkyd, hydroxyacrylic, epoxy, etc. Give water-based coatings quick-drying, film-forming com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/03C08L61/02C08L5/16
Inventor 蒋哲明易添福叶武龙阳习春刘小林欧阳湘王致远周磊
Owner 湖南林特科技有限公司