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

Preparation method of low-cost formaldehyde-free cross-linking dispersing agent and soybean adhesive prepared by using same

A soybean adhesive and dispersant technology, applied in the preparation of adhesives, animal glue or gelatin, polymer adhesive additives, etc., can solve the problems of high cost, and it is difficult for wood-based panels to meet the requirements of formaldehyde emission, and achieve excellent glue The effect of bonding performance and water resistance

Active Publication Date: 2020-01-21
浙江蓝歌新材料科技有限公司
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to solve the problem that the artificial board prepared by the existing urea-formaldehyde resin adhesive is difficult to meet the requirement for formaldehyde emission, and the cost of the formaldehyde-free PAE soybean adhesive is high, and provides a low-cost and formaldehyde-free exchange Preparation method of joint dispersant and soybean adhesive prepared by using it

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of low-cost formaldehyde-free cross-linking dispersing agent and soybean adhesive prepared by using same
  • Preparation method of low-cost formaldehyde-free cross-linking dispersing agent and soybean adhesive prepared by using same
  • Preparation method of low-cost formaldehyde-free cross-linking dispersing agent and soybean adhesive prepared by using same

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0025] Specific embodiment one: the preparation method of a kind of low-cost and formaldehyde-free cross-linked dispersant of this embodiment, it is finished according to the following steps:

[0026]1. Weigh 50 to 165 parts of water, 80 to 150 parts of glyoxal solution with a mass percentage of 20% to 50% and 10 to 32 parts of urea by weight, and weigh 80 to 150 parts Mix the glyoxal solution with a mass percentage of 20% to 50% and weighed 50 to 165 parts of water evenly, then adjust the pH to 8.5 to 9.5 at room temperature, and stir to raise the temperature to 50°C to 80°C. 8.5 ~ 9.5 and the temperature is 50 ℃ ~ 80 ℃, add 10 ~ 32 parts of urea weighed to obtain the reaction system, the reaction system is heated to 50 ~ 80 ℃ within 25min ~ 35min, and the temperature is Under the condition of 50°C-80°C, heat-preserve the reaction until the reaction system is dripped into water at 19°C-21°C to form cloudy insoluble matter, then stop the heat-retaining reaction to obtain a cro...

specific Embodiment approach 2

[0036] Embodiment 2: This embodiment differs from Embodiment 1 in that the molar ratio of glyoxal to urea is (2.0-2.4):1 when preparing the cross-linked dispersant described in step 1. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0037] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: in step 1, a sodium hydroxide solution with a mass percentage of 10% to 40% is used to adjust the pH to 8.5 to 9.5 at room temperature. Others are the same as in the first or second embodiment.

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

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a low-cost formaldehyde-free cross-linking dispersing agent and a soybean adhesive prepared by using the same, and relates to a preparation method of across-linking dispersing agent and an adhesive prepared by using the cross-linking dispersing agent. The invention aims to solve the problems that an artificial board prepared from an existing urea-formaldehyde resin adhesive is difficult to meet the requirement on formaldehyde release amount, and a formaldehyde-free PAE type soybean adhesive is high in cost. The preparation method comprises the following steps: 1, uniformly mixing a glyoxal solution with water, adjusting the pH value, heating the mixture, adding urea, heating the mixture, and carrying out a thermal insulation reaction to obtain a cross-linking dispersant; 2, cooling the mixture and adding water to obtain a low-cost formaldehyde-free cross-linking dispersing agent; the soybean adhesive prepared by utilizing the cross-linking dispersing agent is prepared by stirring the cross-linking dispersing agent which is low in cost and free of formaldehyde, bean flour and a curing agent at room temperature. The invention relates to the preparation method of the low-cost formaldehyde-free cross-linking dispersing agent and the soybean adhesive prepared by using the same.

Description

technical field [0001] The invention relates to a preparation method of a cross-linking dispersant and an adhesive prepared by using the cross-linking dispersant. Background technique [0002] Adhesives are the blood of my country's wood-based panel industry. As the largest country in the world's wood-based panel production, consumption and import and export trade, China's wood-based panel production has exceeded 299 million cubic meters in 2018, an increase of 1.4% over 2017, of which plywood production reached 195 million cubic meters, accounting for all wood-based panels. 65.3% of output, an increase of 1.2%. Adhesives used for plywood production each year exceed 14.92 million tons in terms of solid content, mainly three "formaldehyde-based" synthetic resin adhesives, urea-formaldehyde resin adhesives, melamine-modified urea-formaldehyde resins and phenolic resins, and urea-formaldehyde resins Adhesives account for more than 90%. [0003] Urea-formaldehyde resin, pheno...

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
IPC IPC(8): C08G12/12C09J11/08C09J189/00
CPCC08G12/12C09J189/00C09J11/08C08L61/24
Inventor 高振华阚雨菲阚浩峰姜也葛婧朱梦琪吴栋
Owner 浙江蓝歌新材料科技有限公司
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