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Process for producing glue by adopting phthalic anhydride series polyatomic alcohol as raw material

A production process and polyol technology, applied in the field of glue production process, can solve the problems of large material consumption, waste of energy consumption, environmental impact, etc.

Inactive Publication Date: 2015-12-16
绍兴越城区中泽胶带厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing manufacturing process takes a long time, requires a large amount of materials, wastes energy consumption to a certain extent, and also has a certain impact on the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1: 1. Dehydrate phthalic anhydride-based polyols and adipic acid-based polyols at 100-120 degrees Celsius for 1-3 hours, and mix them with small molecule chain extenders, partially aromatic polyisocyanates, environment-friendly solvents and catalysts after cooling Put it into the reactor, feed nitrogen into the reactor and heat it to 75-85 degrees through the heating device, and stir it through the stirrer for two hours;

[0012] 2. Continuously add the same aromatic polyisocyanate, environment-friendly solvent and catalyst as mentioned above, pass in nitrogen gas and heat to 75-85 degrees through a heating device, and stir with a stirrer for two hours;

[0013] 3. Continue to add the above-mentioned consistent aromatic polyisocyanate, environment-friendly solvent and catalyst dropwise, pass in nitrogen gas and heat to 75-85 degrees through a heating device, and stir with a stirrer for two hours;

[0014] 4. Finally, add the above-mentioned environmentally frien...

Embodiment 2

[0016] Example 2, 1. Dehydrate phthalic anhydride-based polyols and phthalic anhydride oxalic acid at 100-120 degrees Celsius for 1-3 hours. After cooling, mix them with small molecule chain extenders, partial aromatic polyisocyanates, environment-friendly solvents and catalysts. In the reactor, feed nitrogen into the reactor and heat it to between 75-85 degrees by a heating device, and stir it by a stirrer for two hours;

[0017] 2. Continuously add the same aromatic polyisocyanate, environment-friendly solvent and catalyst as mentioned above, pass in nitrogen gas and heat to 75-85 degrees through a heating device, and stir with a stirrer for two hours;

[0018] 3. Continue to add the above-mentioned consistent aromatic polyisocyanate, environment-friendly solvent and catalyst dropwise, pass in nitrogen gas and heat to 75-85 degrees through a heating device, and stir with a stirrer for two hours;

[0019] 4. Finally, add the above-mentioned environmentally friendly solvent an...

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PUM

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Abstract

The invention discloses a process for producing glue by adopting phthalic anhydride series polyatomic alcohol as a raw material, and belongs to the technical field of glue production processes. The process comprises the following steps: dehydrating phthalic anhydride series polyatomic alcohol and adipic acid series polyatomic alcohol or phthalic anhydride series polyatomic alcohol and phthalic anhydride oxalic acid for 1-3 hours at 100-120 DEG C to obtain a mixture I; cooling the mixture I, mixing the cooled mixture I with one or more small molecular chain extenders as well as part of aromatic polyisocyanate, an environment-friendly solvent and a catalyst to obtain a mixture II, and putting the mixture II in a reactor; injecting nitrogen gas into the reactor, heating to 75-85 DEG C with a heating device, and carrying out 2 hours' stirring with a stirrer; dropwise adding aromatic polyisocyanate, the environment-friendly solvent and the catalyst continuously, injecting nitrogen gas again, heating to 75-85 DEG C again with the heating device, and carrying out several hours' stirring with the stirrer. The process has the advantages that phthalic anhydride series polyatomic alcohol is adopted as the raw material, and the chain extenders and polyisocyanate are also adopted; the glue, namely a high-component and relatively-high-rigidity polyester-type polyurethane adhesive, is prepared by adding polyisocyanate in a distributed manner in the presence of the environment-friendly solvent, the catalyst and other solvents.

Description

technical field [0001] The invention belongs to the technical field of glue production technology, and in particular relates to a glue production process using phthalic anhydride polyols as raw materials. Background technique [0002] Object bonding, it is simply to realize by the pulling force between the polymer body in glue. The existing manufacturing process takes a long time, requires a large amount of materials, wastes energy consumption to a certain extent, and also has a certain impact on the environment. In response to this problem, the applicant of the present patent has researched and developed a glue production process that uses phthalic anhydride polyol as a raw material with high cohesiveness, water resistance and non-yellowing, and is suitable for the adhesive field with high hardness. Contents of the invention [0003] The purpose of the present invention is to overcome the problem of providing a glue production process that uses phthalic anhydride polyols...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/06C08G18/32C08G18/76
Inventor 余建荣
Owner 绍兴越城区中泽胶带厂