Latent single-component polyurethane hot melt adhesive, preparation method thereof and adhesive film

A polyurethane hot-melt adhesive, one-component technology, used in polyurea/polyurethane adhesives, heat-activated films/sheets, adhesives, etc., can solve the problems of limited application and harsh storage conditions, and improve heat resistance and oxidation resistance. Performance, low cost, avoid slow post-curing effects

Active Publication Date: 2020-05-05
GUANGDONG YETOM NEW MATERIALS CO LTD
View PDF8 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its reactive isocyanate (-NCO) group, the storage conditions are harsh (low temperature, moisture insulation, and vacuum storage in general), and post-curing takes 3-7 days, which limits its use in some rapid use fields Applications

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
  • Latent single-component polyurethane hot melt adhesive, preparation method thereof and adhesive film
  • Latent single-component polyurethane hot melt adhesive, preparation method thereof and adhesive film
  • Latent single-component polyurethane hot melt adhesive, preparation method thereof and adhesive film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043]A latent one-component polyurethane hot-melt adhesive, comprising the following components by weight percentage:

[0044]

[0045] The preparation method of above-mentioned latent one-component polyurethane hot-melt adhesive comprises the following steps:

[0046] Water-based polyurethane resin U42, water-based polyurethane resin U58, closed curing agent 2794 (NCO group content is 11.5%, unblocking temperature 105 ° C), closed curing agent B1358 / 100 (NCO group content is 12.5%, unblocking temperature Temperature 130°C), dibutyltin dilaurate, antioxidant 1010, and ultraviolet absorber UV-328 were put into the reaction kettle, and mixed evenly at a low speed at a stirring speed of 100rpm to obtain a latent one-component polyurethane hot melt adhesive.

[0047] An adhesive film is obtained by curing the latent one-component polyurethane hot melt adhesive.

[0048] Specifically, a latent one-component polyurethane hot-melt adhesive was added into a coating machine, and c...

Embodiment 2

[0050] A latent one-component polyurethane hot-melt adhesive, comprising the following components by weight percentage:

[0051]

[0052] The preparation method of above-mentioned latent one-component polyurethane hot-melt adhesive comprises the following steps:

[0053] Put water-based polyurethane resin U2849, water-based polyurethane resin U58, closed curing agent B1358 / 100 (NCO group content is 12.5%, unblocking temperature 130 ℃), stannous octoate, antioxidant 1010, ultraviolet absorber UV-5411 into Into the reaction kettle, mix evenly at a low speed at a stirring speed of 50rpm, and obtain a latent one-component polyurethane hot melt adhesive.

[0054] An adhesive film is obtained by curing the latent one-component polyurethane hot melt adhesive.

[0055] Specifically, a latent one-component polyurethane hot-melt adhesive was added into a coating machine, and coated on glassine paper with a thickness of 0.1 mm by a scraper of a coating head to obtain an adhesive film...

Embodiment 3

[0057] A latent one-component polyurethane hot-melt adhesive, comprising the following components by weight percentage:

[0058]

[0059] The preparation method of above-mentioned latent one-component polyurethane hot-melt adhesive comprises the following steps:

[0060] Solvent-based polyurethane resin CX6049, solvent-based polyurethane resin 2550, blocked curing agent B1358 / 100 (NCO group content is 12.5%, unblocking temperature 130 ° C), triethylenediamine, antioxidant 168, ultraviolet absorber UV -9 was put into the reaction kettle, and mixed evenly at a low speed at a stirring speed of 100rpm to obtain a latent one-component polyurethane hot melt adhesive.

[0061] An adhesive film is obtained by curing the latent one-component polyurethane hot melt adhesive.

[0062] Specifically, a latent one-component polyurethane hot-melt adhesive was added into a coating machine, and coated on glassine paper with a thickness of 0.05 mm by a scraper of a coating head to obtain an ...

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
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to the field of polymer adhesives, in particular to a latent single-component polyurethane hot melt adhesive, a preparation method thereof and an adhesive film. The latent single-component polyurethane hot melt adhesive comprises the following components (by weight): 70%-95% of polyurethane resin, 4.8%-29.3% of a closed curing agent, 0.01%-0.2% of an accelerant, and 0.01%-0.5% of an auxiliary agent. The latent single-component polyurethane hot melt adhesive disclosed by the invention has good bonding strength, heat resistance, hydrolysis resistance and the like; the preparation method is simple in process, low in cost and high in preparation efficiency, and has a prospect in industrial production; a latent single-component polyurethane adhesive film obtained by curingthe latent single-component polyurethane hot melt adhesive has good initial adhesion, excellent final adhesion and storage stability; and the product can be widely used in woodworking, textile, outdoor clothing, automobiles, electronics, household appliances and other industries.

Description

technical field [0001] The invention relates to the field of polymer adhesives, in particular to a latent one-component polyurethane hot-melt adhesive, a preparation method and an adhesive film thereof. Background technique [0002] Polyurethane is a rapidly developing multifunctional polymer synthetic material. Due to the variety of raw materials and the adjustability of molecular structure, it can be made into various products such as foam plastics, elastomers, coatings, and hot melt adhesives. Its uses extremely broad. In addition, by adjusting the raw materials and formulations of polyurethane, various types of polyurethane hot melt adhesives suitable for bonding between various materials and for various purposes can be designed. Polyurethane hot melt adhesive has excellent flexibility, impact resistance, chemical resistance, and has particularly excellent low temperature resistance and abrasion resistance. [0003] Polyurethane hot melt adhesives can be divided into t...

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): C09J175/04C09J11/06C09J7/10C09J7/35
CPCC08L2201/08C08L2205/025C09J11/06C09J175/04C09J7/10C09J7/35C08L75/04C08K5/1345C08K5/526C08K5/3475C08K5/132C08K5/29
Inventor 梁坤焕欧阳效明梁锋
Owner GUANGDONG YETOM NEW MATERIALS CO LTD
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