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Fragrant furan resin and its preparing process

A furan resin and fragrance technology, which is applied in the field of polymer compound compositions, can solve problems such as unpleasant odor and affect the normal operation of workers, and achieve the effect of being beneficial to wide application and improving the working environment.

Inactive Publication Date: 2002-11-13
DONGYUAN CHEM PLANT HUANTAI SHANDONG PROV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to a report by Shanxi Gaoping Chemical Co., Ltd. at the end of 2001, the free formaldehyde content of the casting furan resin produced by the company was below 0.4%, but there was still an unpleasant smell, which affected the normal work of workers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Example 1 A furan resin with a fruity aroma, containing 0.05% n-butyl acetate by weight in the resin, prepared by first carrying out urea-formaldehyde reaction with formaldehyde and urea under alkaline conditions, then adding furfuryl alcohol for condensation, and then After neutralization, water washing and dehydration, add n-butyl acetate with a weight ratio of 0.05%, and mix well. The content of free formaldehyde in the obtained furan resin is ≤0.4%.

Embodiment 2

[0009] Example 2 A no-odor furan resin, which contains 1.00% n-propanol by weight, is prepared by adding 1.00% n-propanol to the finished liquid furan resin and mixing.

Embodiment 3

[0010] Example 3 For a furan resin with an aromatic smell, formaldehyde and urea are reacted with urea-formaldehyde under alkaline conditions, then furfuryl alcohol is added to condense, and after neutralization, washing and dehydration, linalool with a weight ratio of 0.50% is added ,well mixed.

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PUM

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Abstract

A fragrant furan resin is prepared through reaction of formaldehyde on urea under the action of alkaline catalyst, adding furfuyl alcohol, condensation reaction, neutrolizing, water washing, dewatering, and them mixing with propaneol, n-butaneol, or volatile aromatic substance, and uniformly mixing. This invention eliminates the peculiar odour of furan resin, improves the operation environment, and benefits its popularization.

Description

technical field [0001] The invention belongs to the composition field of polymer compounds obtained by reactions other than carbon-carbon unsaturated bonds, and in particular relates to a furan resin with aromatic smell. Background technique [0002] Furan resin is a general term for thermosetting resins made of furfuryl alcohol or furfural with a furan ring. Furan resin made of furfuryl alcohol has better heat resistance and corrosion resistance, better mechanical strength and electrical insulation, and The source of raw materials is wide, the production process is simple, and it is widely used in casting, anti-corrosion and other industries. The currently used furan resin is mainly synthesized from formaldehyde, urea and furfuryl alcohol. The content of free formaldehyde in it is usually 1.5% to 2.0%. During the manufacture and use, it emits unpleasant odors such as aldehyde and phenol. According to a report by Shanxi Gaoping Chemical Co., Ltd. at the end of 2001, the fre...

Claims

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Application Information

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IPC IPC(8): C08K5/00C08K5/05C08L61/00C08L63/00
Inventor 王卫东
Owner DONGYUAN CHEM PLANT HUANTAI SHANDONG PROV
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