Methanol and isobutanol mixed ether amino resin and preparation method thereof

A technology of amino resin and isobutanol, applied in the direction of coating, etc., to achieve the effect of excellent water resistance, high atomic conversion rate, high hardness and water resistance

Active Publication Date: 2011-05-11
SHANGHAI HUAYI FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But about methyl alcohol, isobutanol mixed etherification amino resin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add 100 grams of melamine, 160 grams of solid formaldehyde, 180 grams of methanol, and 0.15 grams of sodium hydroxide into a four-necked flask with a water separator, stir and heat up, and react at 55-60°C for 3 hours, and the reaction product is cooled to 50°C Finally, add 0.2 g of catalyst p-toluenesulfonic acid and 350 g of isobutanol, raise the temperature again, and react at 85-90°C for 10 hours, dehydrate to 90°C while reacting, and remove 45 g of excess isobutanol by raising the temperature of the reaction product to At 100°C, methanol and isobutanol mixed etherified amino resin products were produced.

[0029] The methanol, isobutanol mixed etherified amino resin of the embodiment of the present invention 1 is compared with conventional methanol, butanol mixed etherified ammonia resin, and the product quality index is as shown in table 1 below:

[0030] Table 1

[0031] project

[0032] Through comparison, it can be seen that the quality index of the ...

Embodiment 2

[0038] Add 120 grams of melamine, 140 grams of solid formaldehyde, 200 grams of methanol, and 0.2 grams of sodium hydroxide into a four-neck flask with a water separator, stir and heat up, and react at 65-70°C for 1 hour, and the reaction product is cooled to 50°C Finally, add 0.2 g of catalyst p-toluenesulfonic acid and 450 g of isobutanol, raise the temperature again, and react at 90-95°C for 9 hours, dehydrate to 95°C while reacting, and remove excess isobutanol 75 g to At 100°C, methanol and isobutanol mixed etherified amino resin products were produced.

[0039] The amino resin of methanol, isobutanol mixed etherification of the embodiment of the present invention 2 is compared with conventional methanol, butanol mixed etherified ammonia resin, and the product quality index is as shown in table 3 below:

[0040] table 3

[0041] project

[0042] Through comparison, it can be seen that the quality index of the present invention is similar to that of conventional...

Embodiment 3

[0048] Add 100 grams of solid formaldehyde, 180 grams of methanol, and 0.12 grams of sodium hydroxide into a four-neck flask with a water separator, stir and heat up, and react at 55-60°C for 3 hours. After the reaction product is cooled to 50°C, put in melamine 110 grams, add 0.1 grams of catalyst p-toluenesulfonic acid, react at 70-75°C for 1 hour, add 400 grams of isobutanol, heat up again, react at 85-90°C for 10 hours, dehydrate to 90°C while reacting, and react The temperature of the product is raised to remove 55 grams of excess isobutanol to 100° C. to obtain a mixed etherified amino resin product of methanol and isobutanol.

[0049] The amino resin of methanol, isobutanol mixed etherification of the embodiment of the present invention 3 is compared with conventional methanol, butanol mixed etherified ammonia resin, and the product quality index is as shown in table 5 below:

[0050] table 5

[0051] project

[0052] Through comparison, it can be seen that t...

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PUM

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Abstract

The invention relates to methanol and isobutanol mixed ether amino resin and a preparation method thereof. The methanol and isobutanol mixed ether amino resin is prepared from the following components in percentage by weight: 15 to 30 percent of melamine, 20 to 30 percent of solid formaldehyde, 20 to 30 percent of methanol and 25 to 40 percent of isobutanol. The invention also provides the preparation method of the methanol and isobutanol mixed ether amino resin. The invention has the advantages that: the amino resin is prepared from the methanol and the isobutanol serving as modifiers, so that the cross-linking temperature can be greatly reduced, the requirements of energy saving and emission reduction are met, and the modified resin has high hardness, water resistance and chemical resistance; and p-toluenesulfonic acid and sodium hydroxide are taken as catalysts, so that reaction time is shortened, and the using amount of the catalysts is reduced.

Description

technical field [0001] The invention relates to a resin and a preparation method thereof, in particular to a methanol and isobutanol mixed etherified amino resin and a preparation method thereof. Background technique [0002] Amino resins for coatings contain ammonia (-NH 2 Or -NH) group compound reacts with aldehydes and then is modified with alcohols to make it soluble in organic solvents. It is the most important crosslinking agent in thermosetting coatings. In the 1980s, in order to reduce environmental pollution, various water-based and high-solid coatings were developed abroad, and amino resins also made great progress. The American Cytec Chemical Company first developed a series of methyl etherified amino resins with the brand name Cymel, and the American Monsanto Chemical Company And the German BASF Group has also developed corresponding products. In the 1990s, the American Cytec Chemical Company developed a mixed etherified amino resin with methacrylate and butyl...

Claims

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Application Information

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IPC IPC(8): C08G12/42C08G12/32C09D7/12
Inventor 廖群晖袁玉瑾陈军
Owner SHANGHAI HUAYI FINE CHEM CO LTD
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