Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Urea-formaldehyde glue and preparation method thereof

A technology of glue and urine glue, applied in the direction of adhesives, adhesive types, aldehyde/ketone condensation polymer adhesives, etc., to achieve good impregnation effect and high hardness

Inactive Publication Date: 2015-04-29
SHOUGUANG DONGYU HONGXIANG WOOD IND
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no environmentally friendly urine glue on the market that can effectively absorb and fix formaldehyde and effectively prevent its release.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A urea glue, which is composed of the following substances in parts by weight: 4200kg of formaldehyde, 2400kg of urea, 300kg of saffron extract, and 1000kg of water.

[0019] The extraction method of the saffron extract is as follows: dry 1500kg of the sage, crush it, add 3000L of ethanol to dissolve, heat to 40-60 degrees and stir for 1-5h, take the solution, evaporate to dryness and reflux the ethanol to obtain the sage extract.

[0020] The preparation method of above-mentioned urine glue glue is carried out according to the following steps:

[0021] (1) Take 4200kg of formaldehyde, add 1000kg of water, and use sodium hydroxide solution to adjust the pH to 8.0;

[0022] (2) Add 1400kg of urea and 300kg of saffron extract, and turn off the steam when the temperature rises to 65 degrees;

[0023] (3) Heat up to 90 degrees, keep it warm for 20 minutes, use formic acid to adjust the pH to 4.2, react for 20 minutes, and measure the water solubility ratio to 1:2.5;

[00...

Embodiment 2

[0028] A urea glue, which is composed of the following substances in parts by weight: 3500kg of formaldehyde, 2500kg of urea, 200kg of sage extract and 900kg of water.

[0029] The extraction method of the saffron extract is as follows: dry 1200kg of the sage, crush it, add 2400L of ethanol to dissolve, heat to 40-60 degrees and stir for 1-5h, take the solution, evaporate to dryness and reflux the ethanol to obtain the sage extract.

[0030] The preparation method of above-mentioned urine glue glue is carried out according to the following steps:

[0031] (1) Take 3500kg of formaldehyde, add 900kg of water, and use sodium hydroxide solution to adjust the pH to 8.2;

[0032] (2) Add 1500kg of urea, 200kg of saffron extract, and turn off the steam when the temperature rises to 65 degrees;

[0033] (3) Heat up to 92 degrees, keep warm for 25 minutes, use formic acid to adjust the pH to 4.3, react for 20 minutes, and measure the water solubility ratio to be 1:3;

[0034] (4) Use...

Embodiment 3

[0038] A urea glue, which is composed of the following substances in parts by weight: 5000kg of formaldehyde, 3000kg of urea, 500kg of saffron extract, and 1200kg of water.

[0039] The extraction method of the saffron extract is as follows: dry 2500kg of the sage, crush it, add 5000L of ethanol to dissolve, heat to 40-60 degrees and stir for 1-5h, take the solution, evaporate to dryness and reflux the ethanol to obtain the sage extract.

[0040] The preparation method of above-mentioned urine glue glue is carried out according to the following steps:

[0041] (1) Take 5000kg of formaldehyde, add 1200kg of water, and use sodium hydroxide solution to adjust the pH to 8.5;

[0042] (2) Add 2000kg of urea and 500kg of saffron extract, and turn off the steam when the temperature rises to 65 degrees;

[0043] (3) Heat up to 95 degrees, keep warm for 30 minutes, use formic acid to adjust the pH to 4.4, react for 25 minutes, and measure the water solubility ratio to 1:3.5;

[0044]...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses furniture paper, belongs to the technical field of mold pressing door paper dipping, and provides urea-formaldehyde glue and a preparation method thereof. The urea-formaldehyde glue comprises the following substances in parts by weight: 30-50 parts of formaldehyde, 20-30 parts of urine, 1-5 parts of beckmannia syzigachne extract and 8-12 parts of water. The beckmannia syzigachne extract added to the urea-formaldehyde glue can effectively fix formaldehyde so that formaldehyde cannot volatilize and can be removed through chemical reactions with other substances, and the urea-formaldehyde glue is environment-friendly furniture paper and a mold pressing door paper dipping material. The urea-formaldehyde glue prepared with the preparation method has a good dipping effect, and the dipped furniture paper and the mold pressing door paper are high in hardness, and resistant to wear, acid and alkali.

Description

technical field [0001] The invention belongs to the technical field of impregnation of furniture paper and molded door paper, and in particular relates to urine glue and a preparation method thereof. Background technique [0002] Furniture paper and molded door paper need to be impregnated to meet the requirements of reinforcement, wear resistance, and acid and alkali resistance. Generally, the impregnated glue will contain formaldehyde, which has a strong smell and seriously damages the health of the operators. After the doors and other furniture are made , Formaldehyde will also be slowly released, which will also cause harm to the health of the people living in it. [0003] Lemongrass is an annual herbaceous weed, which is suitable for growing in waterside and humid places. It is the main weed in rice stubble, wheat and rapeseed fields in the Yangtze River Basin and Southwest China, especially in low-lying fields with heavy soil. Saffron has strong vitality, can survive ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09J161/06C09J11/00C08G12/12
Inventor 孙宏光
Owner SHOUGUANG DONGYU HONGXIANG WOOD IND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com