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Single-component water-based polyurethane/acrylate composite resin capable of being cured at room temperature and preparation method thereof

A water-based polyurethane and acrylate technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of crosslinking degree limitation, gel effect, etc., and achieve the effect of simple preparation process

Active Publication Date: 2012-06-13
SHANGHAI RESIN FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the cross-linking reaction of this kind of resin occurs during the synthesis process, it is easy to cause gel effect, so the degree of cross-linking is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A one-component waterborne polyurethane / acrylate composite resin that can be cured at room temperature, that is, a ketone group-containing waterborne polyurethane resin and a ketone group-containing waterborne acrylate resin in a mass ratio, namely a ketone group-containing waterborne polyurethane resin: ketone group-containing waterborne acrylate resin The resin is mixed in a ratio of 1:1, and after adding 50% of the crosslinking agent adipazide in the total molar amount of ketone groups, a room temperature-curable one-component waterborne polyurethane / acrylate composite resin is obtained;

[0052] Wherein said ketone-based waterborne polyurethane resin, its raw material components are calculated in parts by weight, and its composition and content are as follows:

[0053]Polyester diol 105 parts

[0054] 15 parts of dimethylolpropionic acid

[0055] 55 parts of diisocyanate

[0056] 18 parts of hydroxyketone

[0057] 10 parts of triethylamine

[0058] Acetone 40 pa...

Embodiment 2

[0082] A one-component water-based polyurethane / acrylate composite resin that can be cured at room temperature, that is, a ketone-based water-based polyurethane resin and a ketone-based water-based acrylate resin in a mass ratio, that is, a ketone-based water-based polyurethane resin: ketone-based water-based acrylate resin The resin is mixed in a ratio of 1:1, and after adding 50% of the cross-linking agent adiphydrazide in the total molar amount of ketone groups, a room temperature-curable one-component waterborne polyurethane / acrylate composite resin is obtained;

[0083] Wherein said ketone-based waterborne polyurethane resin, its raw material components are calculated in parts by weight, and its composition and content are as follows:

[0084] Polyester diol 150 parts

[0085] 20 parts of dimethylolpropionic acid

[0086] 80 parts of diisocyanate

[0087] 45 parts of hydroxyketone

[0088] 15 parts of triethylamine

[0089] Acetone 55 parts

[0090] Deionized water 9...

Embodiment 3

[0112] A one-component water-based polyurethane / acrylate composite resin that can be cured at room temperature, that is, a ketone-based water-based polyurethane resin and a ketone-based water-based acrylate resin in a mass ratio, that is, a ketone-based water-based polyurethane resin: ketone-based water-based acrylate resin The resin is mixed in a ratio of 1:1, and after adding 50% of the cross-linking agent adiphydrazide in the total molar amount of ketone groups, a room temperature-curable one-component waterborne polyurethane / acrylate composite resin is obtained;

[0113] Wherein said ketone-based waterborne polyurethane resin, its raw material components are calculated in parts by weight, and its composition and content are as follows:

[0114] Polyester diol 125 parts

[0115] 17 parts of dimethylolpropionic acid

[0116] 70 parts of diisocyanate

[0117] 27 parts of hydroxyketone

[0118] 12 parts of triethylamine

[0119] Acetone 50 parts

[0120] 800 parts deionize...

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Abstract

The invention discloses a single-component water-based polyurethane / acrylate composite resin capable of being cured at room temperature and a preparation method thereof. The preparation method comprises the steps of mixing keto-containing water-based polyurethane resin with keto-containing water-based acrylate resin in a mass ratio of 1:1 and then adding a crosslinking agent adipic dihydrazide accounting for 50% of total keto molar weight, so as to obtain the single-component water-based polyurethane / acrylate composite resin capable of being cured at room temperature. According to the invention, the preparation process of the single-component water-based polyurethane / acrylate composite resin capable of being cured at room temperature is simple, and crosslinking composition and curing are synchronously carried out. The single-component water-based polyurethane / acrylate composite resin capable of being cured at room temperature is stable in property; and by detection according to the HG / T3828-2006 'indoor water-based woodware paint' standard, the water resistance and alcohol resistance of the composite resin are qualified, and the hardness of the composite resin is 2H.

Description

technical field [0001] The invention relates to a water-based polyurethane / acrylate composite resin and a preparation method thereof, more specifically to a room-temperature-cured single-component water-based polyurethane / acrylate resin cross-linked with ketone hydrazine and a preparation method thereof. Background technique [0002] Waterborne polyurethane / acrylate (PUA) resin is currently the most widely used type of waterborne resin. According to its chemical structure, it can be divided into two types: non-cross-linked type and cross-linked type. Among them, the cross-linking type is mostly a synthetic cross-linking type, which refers to the introduction of a multifunctional substance during the preparation process, which acts as a bridge connecting water-based polyurethane (PU) and polyacrylate (PA), so that PU and PA can be synthesized Cross-linked PUA composite resin. Because the cross-linking reaction of this kind of resin occurs during the synthesis process, it is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L75/06C08L75/08C08L33/12C08K5/25C08G18/66C08F220/14C09D175/04C09D175/06C09D175/08C09D133/12C09D7/12
Inventor 吴蓁郭青孙揭阳
Owner SHANGHAI RESIN FACTORY
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