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A kind of rosin-modified phenolic resin for vacuum spraying high-grade paint and preparation method thereof

A phenolic resin, rosin modification technology, applied in rosin coatings and other directions, can solve problems such as insufficiency and low quality chain, and achieve the effects of preventing oxidation, high softening point, and easy control of conditions

Active Publication Date: 2020-02-14
FENGKAI HAILAN CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the performance of commercially available rosin-modified phenolic resins basically cannot meet the requirements for the production of high-quality vacuum-sprayed high-grade coatings, so domestic enterprises producing high-grade vacuum-sprayed coatings have always been at the low end of the quality chain

Method used

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  • A kind of rosin-modified phenolic resin for vacuum spraying high-grade paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1, a kind of preparation method of rosin-modified phenolic resin for high-grade coating of vacuum spray paint

[0039] The preparation method of the rosin-modified phenolic resin for the vacuum spraying high-grade paint comprises the following steps:

[0040] S1 Put 100kg of p-tetraoctylphenol in a reaction vessel, heat until the p-tetraoctylphenol is completely melted, add 15kg of formaldehyde and 2kg of sodium hydroxide, stir, raise the temperature to 96°C, and keep it warm for 4 hours to obtain a phenolic resin;

[0041] S2 Put 100kg of rosin in a reaction vessel, heat to completely melt the rosin, stir, add 15kg of pentaerythritol and 0.4kg of a catalyst composed of titanium oxide and magnesium oxide in a mass ratio of 5:3, heat up to 268°C, and keep the temperature for 10 hours to obtain Rosin resin;

[0042] S3 put 30kg of the phenolic resin obtained in step S1 and 100kg of the rosin resin obtained in step S2 in a reaction container, add 0.39kg of magn...

Embodiment 2

[0043] Embodiment 2, a kind of preparation method of rosin modified phenolic resin for high-grade coating of vacuum spray paint

[0044] The preparation method of the rosin-modified phenolic resin for the vacuum spraying high-grade paint comprises the following steps:

[0045] S1 Put 100kg of p-tetraoctylphenol in a reaction vessel, heat until the p-tetraoctylphenol is completely melted, add 35kg of formaldehyde and 3kg of sodium hydroxide, stir, raise the temperature to 100°C, and keep it warm for 4 hours to obtain a phenolic resin;

[0046] S2 Put 100kg of rosin in a reaction vessel, heat to completely melt the rosin, stir, add 30kg of pentaerythritol and 0.8kg of a catalyst composed of titanium oxide and magnesium oxide at a mass ratio of 9:1, heat up to 272°C, and keep the temperature for 10 hours to obtain Rosin resin;

[0047] S3 put 70kg of the phenolic resin obtained in step S1 and the rosin resin obtained in 100kg of step S2 in a reaction container, add 1.02kg of mag...

Embodiment 3

[0048] Embodiment 3, a kind of preparation method of rosin-modified phenolic resin for vacuum spray paint high-grade paint

[0049] The preparation method of the rosin-modified phenolic resin for the vacuum spraying high-grade paint comprises the following steps:

[0050] S1 Put 100kg of p-tetraoctylphenol in a reaction vessel, heat until the p-tetraoctylphenol is completely melted, add 20kg of formaldehyde and 2.4kg of sodium hydroxide, stir, raise the temperature to 98°C, and keep it warm for 4 hours to obtain a phenolic resin;

[0051] S2 Put 100kg of rosin in a reaction vessel, heat to completely melt the rosin, stir, add 20kg of pentaerythritol and 0.6kg of a catalyst composed of titanium oxide and magnesium oxide in a mass ratio of 7:2, heat up to 270°C, and keep the temperature for 10 hours to obtain Rosin resin;

[0052] S3 put 40kg of the phenolic resin obtained in step S1 and the rosin resin obtained in 100kg of step S2 in a reaction container, add 0.56kg of magnesi...

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Abstract

The invention belongs to the technical field of forest product chemical product manufacturing, and specifically relates to a rosin modified phenolic resin for a vacuum paint spraying high-grade coating and a preparation method of the rosin modified phenolic resin. The preparation method of the rosin modified phenolic resin for the vacuum paint spraying high-grade coating, provided by the invention, comprises the following steps: firstly reacting tert-octylphenol with formaldehyde in different proportions under sodium hydroxide to prepare phenolic resin with different dissolubility, carrying out esterification on rosin through pentaerythritol to obtain rosin resin, carrying out a synthetic reaction on phenolic resin and the rosin resin in different proportions, then adding an antioxidant and an anti-ultravoilet assistant, and then carrying out refining to obtain the rosin modified phenolic resin. According to the method, the rosin modified phenolic resin for the vacuum paint spraying high-grade coating is prepared by adopting a numerical control method, the condition is easy to control, the rosin modified phenolic resin with different softening points and different dissolubility canbe produced, the prepared rosin modified phenolic resin is excellent in performance, high in softening point, low in color and luster, small in acid value and high in viscosity, and has extremely high dissolubility and molecular weight, and the product quality is easy to control.

Description

technical field [0001] The invention belongs to the technical field of manufacturing forestry chemicals, and in particular relates to a rosin-modified phenolic resin for vacuum spraying high-grade coatings and a preparation method thereof. Background technique [0002] With the continuous improvement of people's living standards and the development of the automobile industry, the society has more and more demands for automobile spray paint. There are many kinds of coatings with different performances. For automotive spray coatings, it is necessary to have good fluidity and adhesion under vacuum conditions, and quick-drying characteristics, and these key points are High quality coating resins are required. Developing the extension industry of rosin, manufacturing high-quality rosin-modified phenolic resin, improving the quality of fine chemical products, and reducing dependence on petroleum resources are of great significance to the sustainable development of my country and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G8/34
CPCC08G8/12C08K2003/222C08K2003/2241C08K2201/011C08L2201/08C09D193/04C08L61/06C08K13/02C08K3/22C08K5/375C08K5/524C08K5/3475C08K5/1345
Inventor 黎月清邓明泉蓝志明祝军张陆春
Owner FENGKAI HAILAN CHEM CO LTD
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