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

Solvent-free polyurethane adhesive and preparation method thereof

A polyurethane adhesive, solvent-free technology, applied in the direction of polyurea/polyurethane adhesive, adhesive, adhesive type, etc., can solve the problems of poor compatibility of resin raw materials, affecting the adhesive performance of the adhesive, affecting the transparency of the adhesive, etc. , to achieve the effects of increasing elongation at break and medium resistance, excellent weather resistance, and excellent hydrolysis resistance

Active Publication Date: 2021-02-09
上海都昱新材料科技有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Solvent-based adhesives are widely used in the composite flexible packaging industry, but solvent-based adhesives have the disadvantages of volatile alcohol, strong odor, and certain toxicity when used, and the flexible packaging industry for food has strict requirements for adhesives, so the development of Solvent-free adhesives, solvent-free adhesives do not contain any solvents, so there is no problem of solvent residues, in order to increase the anti-medium performance of solvent-free adhesives, some inorganic fillers are often added to the filler, for example, silica, Calcium carbonate, etc., but the addition of these fillers will affect the transparency of the adhesive to a certain extent, and because the compatibility of these inorganic fillers with the resin raw materials in the adhesive is not good, although it can improve the medium resistance of the adhesive, it will be in a certain extent. Affects the adhesive properties of the adhesive to a certain extent

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
  • Solvent-free polyurethane adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Embodiment 1 of the present invention specifically provides a solvent-free polyurethane adhesive, the adhesive is composed of A component and B component; the raw materials of the A component include, by weight, 40 parts of polyester polyol , 12 parts of vegetable oil, 5 parts of small molecule polyol; The raw material of described B component comprises, by weight, 60 parts of isocyanate, 7 parts of glass powder;

[0070] The raw material of the A component also includes polyether polyol, and the weight ratio of the polyether polyol to polyester polyol is 1:2;

[0071] Described polyester polyol is adipic acid polyester polyol;

[0072] The adipate polyester polyol is a mixture of polyethylene adipate and polypentylene adipate, and the polydiethylene adipate and polyethylene adipate The weight ratio of pentanediol dioate is 1:1.5;

[0073] The viscosity of the polyethylene adipate at 60°C is 4000cps;

[0074] Described vegetable oil comprises epoxidized soybean oil; ...

Embodiment 2

[0086] Embodiment 2 of the present invention specifically provides a solvent-free polyurethane adhesive, the adhesive is composed of A component and B component; the raw materials of the A component include, by weight, 50 parts of polyester polyol , 20 parts of vegetable oils, 8 parts of small molecular polyols; the raw materials of the B component include, in parts by weight, 80 parts of isocyanates and 10 parts of glass powder;

[0087] The raw material of the A component also includes polyether polyol, and the weight ratio of the polyether polyol to polyester polyol is 1:3;

[0088] Described polyester polyol is adipic acid polyester polyol;

[0089] The adipate polyester polyol is a mixture of polyethylene adipate and polypentylene adipate, and the polydiethylene adipate and polyethylene adipate The weight ratio of pentylene glycol diacid is 1:2;

[0090] The viscosity of the polyethylene adipate at 60°C is 6000cps;

[0091] Described vegetable oil comprises epoxidized ...

Embodiment 3

[0103]Embodiment 3 of the present invention specifically provides a solvent-free polyurethane adhesive, the adhesive is composed of A component and B component; the raw materials of the A component include, by weight, 45 parts of polyester polyol , 18 parts of vegetable oils, 6 parts of small molecular polyols; the raw materials of the B component include, in parts by weight, 70 parts of isocyanates and 8 parts of glass powder;

[0104] The raw material of the A component also includes polyether polyol, and the weight ratio of the polyether polyol to polyester polyol is 1:2.5;

[0105] Described polyester polyol is adipic acid polyester polyol;

[0106] The adipate polyester polyol is a mixture of polyethylene adipate and polypentylene adipate, and the polydiethylene adipate and polyethylene adipate The weight ratio of pentanediol dioate is 1:1.8;

[0107] The viscosity of the polyethylene adipate at 60°C is 5000cps;

[0108] Described vegetable oil comprises epoxidized soy...

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
Viscosityaaaaaaaaaa
The average particle sizeaaaaaaaaaa
Viscosityaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of adhesives, in particular to a solvent-free polyurethane adhesive and a preparation method thereof. The adhesive is composed of a component A and a component B, wherein the component A is prepared from the following raw materials in parts by weight: 40-50 parts of polyester polyol, 12-20 parts of vegetable oil and 5-8 parts of micromolecular polyol; the component B is prepared from the following raw materials in parts by weight: 60-80 parts of isocyanate and 7-10 parts of glass powder. During use, the component A and the component B are uniformlymixed according to the weight ratio of 1:(1.2-1.5) for use. The solvent-free polyurethane adhesive disclosed by the invention does not contain any solvent, so that the residual problem of solvent pollution does not exist. The product belongs to a green and environment-friendly adhesive, and has good adhesive property, medium resistance and transparency.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a solvent-free polyurethane adhesive and a preparation method thereof. Background technique [0002] Solvent-based adhesives are widely used in the composite flexible packaging industry, but solvent-based adhesives have the disadvantages of volatile alcohol, strong odor, and certain toxicity when used, and the flexible packaging industry for food has strict requirements for adhesives, so the development of Solvent-free adhesives, solvent-free adhesives do not contain any solvents, so there is no problem of solvent residues, in order to increase the anti-medium performance of solvent-free adhesives, some inorganic fillers are often added to the filler, for example, silica, Calcium carbonate, etc., but the addition of these fillers will affect the transparency of the adhesive to a certain extent, and because the compatibility of these inorganic fillers with the resin raw material...

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): C09J175/14C09J11/04
CPCC09J175/14C09J11/04C08K3/40
Inventor 张人华贾玉波
Owner 上海都昱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