Novel method for preparing crylic acid modified resin for two-component waterborne polyurethane adhesive

A polyurethane adhesive, water-based two-component technology, applied in polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve problems such as reduced bonding performance, fluctuations in bonding performance, and damage to the ecological environment , to achieve the effects of suppressing the occurrence of defects, reducing construction difficulty and reducing costs

Active Publication Date: 2015-06-03
BEIJING JINHWEILI APPLIED CHEM PROD
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the isocyanate group is very active, it can react with compounds containing active hydrogen such as alcohols, acids, amines and water, and react according to a certain equivalent. The reaction between isocyanate and water generates carbon dioxide, resulting in the loss of isocyanate, which leads to The reduction of the reacted isocyanate in the material or the adhesive base material will result in a decrease in bonding performance or even failure. Therefore, the various raw materials and diluents of general-purpose polyurethane adhesives must strictly control moisture and substances containing active hydrogen such as alcohols and amines. As well as the content of phenols, in high humidity weather such as the rainy season in the south, it will often cause large fluctuations in bonding performance, resulting in unnecessary losses
[0003] At p...

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
  • Novel method for preparing crylic acid modified resin for two-component waterborne polyurethane adhesive
  • Novel method for preparing crylic acid modified resin for two-component waterborne polyurethane adhesive
  • Novel method for preparing crylic acid modified resin for two-component waterborne polyurethane adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Table 1 Polyacid and polyalcohol feed list for partial synthesis of polyester

[0027]

[0028] Table 2. Acrylic resin copolymer monomer initiator feed list

[0029]

[0030] a. Add the monomers in Table 1 except coconut oleic acid to the four-neck flask with stirring, thermometer and rectification column, control the temperature of the kettle not to exceed 230°C, the temperature of the column is 95-100°C, and react for 2-4hrs Weigh the amount of water, the acid value is less than 5mgKOH / g, add coconut oil acid, continue the reaction for 1-1.5hr, the acid value is less than 5mgKOH / g, and cool down to 100°C.

[0031] b. Add 150g propylene glycol methyl ether and 80g ethylene glycol monobutyl ether, and control the temperature to 90-100°C;

[0032] c. At 90-100°C, methyl methacrylate (MMA), butyl acrylate (BA), lauryl methacrylate (LMA), glycidyl methacrylate (GMA), isobornyl methacrylate Mix monomers such as ester (IBOMA) and azobisisobutyronitrile (AIBN) evenly,...

Embodiment 2

[0036] Table 3 Polyacid and polyol feed list for partial synthesis of polyester

[0037]

[0038] Table 4. Acrylic resin copolymer monomer initiator feed list

[0039]

[0040] a. Add the monomers in Table 1 except soybean oil to a four-neck flask equipped with stirring, thermometer and rectification column, control the temperature of the kettle not to exceed 230°C, and the temperature of the column at 95-100°C, and weigh after 2-4hrs of reaction The amount of water output, the measured acid value is less than 5mgKOH / g, add soy oil, continue the reaction for 1-1.5hr, the measured acid value is less than 5mgKOH / g, and cool down to 100°C.

[0041] b. At 100°C, methyl methacrylate (MMA), butyl acrylate (BA), butyl methacrylate (BMA), glycidyl methacrylate (GMA), isobornyl methacrylate ( IBOMA) and other monomers and benzoyl peroxide (BPO) were mixed evenly, and added dropwise into a four-necked bottle, and the dropwise addition time was 2-2.5hr. After the dropwise addition...

Embodiment 3

[0045] Table 5 Polyacid and polyol feed list for partial synthesis of polyester

[0046]

[0047] Table 6. Acrylic resin copolymer monomer initiator feed list

[0048]

[0049] a. Add the monomers in Table 1 except soybean oil to a four-neck flask equipped with stirring, thermometer and rectification column, control the temperature of the kettle not to exceed 230°C, and the temperature of the column at 95-100°C, and weigh after 2-4hrs of reaction The amount of water produced is less than 5mgKOH / g as measured by the acid value. Add soy oil and continue the reaction for 1-1.5hr. The measured acid value is less than 5mgKOH / g, and the temperature is lowered to 110°C.

[0050] b. At 110°C, methyl methacrylate (MMA), butyl acrylate (BA), lauryl methacrylate (LMA), glycidyl methacrylate (GMA), isobornyl methacrylate ( IBOMA) and other monomers and tert-butyl peroxybenzoate (TBPB) were mixed evenly, and added dropwise into a three-necked bottle for 2 to 2.5 hours. After the add...

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 belongs to the field of adhesives, and discloses a novel method for preparing crylic acid modified resin for a two-component waterborne polyurethane adhesive. The novel method comprises the following steps: directly selecting polymer resin or synthesizing polymer resin from raw materials, adding a solvent into the polymer resin or synthesizing polymer resin from raw material, thereby modifying by using vinyl or crylic acid and an ester monomer at certain temperature or in the presence of an initiator, and further implementing a reaction on organic amino and acid substances, thereby obtaining the crylic acid modified resin for the two-component waterborne polyurethane adhesive. By adopting the method, crylic acid modified resin can be prepared, and can be directly used or is combined with a component containing isocyanate to obtain a polyurethane adhesive after chain expansion, the isocyanate group in the adhesive can be preferably reacted with active groups of resin in a waterborne environment, and can stably exist in the waterborne environment; in addition, compared with a solvent type polyurethane adhesive, the adhesive is relatively low in VOC content, the defects that an ordinary waterborne polyurethane adhesive can be stripped from a substrate, has bubbles in an adhesive film, is poor in adhesion and has material defects after being used can be avoided, and the cost of the polyurethane adhesive can be lowered.

Description

technical field [0001] The invention relates to a preparation method of an acrylic modified resin for a novel water-based two-component polyurethane adhesive, belonging to the field of adhesives. Background technique [0002] Polyurethane adhesives refer to adhesives containing urethane bonds or isocyanate groups in the base material molecule. Polyurethane adhesives contain highly polar and chemically active isocyanate groups and urethane groups, which are compatible with materials containing active hydrogen, porous materials such as wood, leather, paper, ceramics, and smooth surfaces such as metals, glass, rubber, and plastics. The materials have excellent chemical adhesion, and the bond is firm. Because the isocyanate group is very active, it can react with compounds containing active hydrogen such as alcohols, acids, amines and water, and react according to a certain equivalent. The reaction between isocyanate and water generates carbon dioxide, resulting in the loss of ...

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): C08F283/01C08F220/14C08F220/18C08F220/32C08F212/08C08G63/52C09J175/06C09J175/04
Inventor 黄莹莹程建军秦文
Owner BEIJING JINHWEILI APPLIED CHEM PROD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap