Unlock instant, AI-driven research and patent intelligence for your innovation.

Curing agents for two-component adhesives, two-component adhesives, laminated films, and packages

An adhesive, two-component technology, applied in the direction of adhesives, chemical instruments and methods, polyurea/polyurethane adhesives, etc., can solve the problems of high viscosity, short pot life, and long pot life of non-target substances Solve problems such as two-component adhesives, achieve excellent adhesion, excellent operability, and excellent long-term storage effects

Active Publication Date: 2021-12-03
DIC CORPORATION
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, SML (Specifc migration limit) is stipulated for the elution of chemical substances used in adhesives, and the elution can be easily controlled. However, there is a problem that it cannot be easily eliminated. Dissolution of non-target added substances (NIAS)
However, since this adhesive is used by reacting the modified diphenylmethane diisocyanate with a polyol, it tends to become highly viscous, and the pot life still tends to be short.
[0007] Therefore, the current situation is that a two-component adhesive with less elution of non-target substances and a long pot life that satisfies practical requirements has not yet been obtained.

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
  • Curing agents for two-component adhesives, two-component adhesives, laminated films, and packages
  • Curing agents for two-component adhesives, two-component adhesives, laminated films, and packages
  • Curing agents for two-component adhesives, two-component adhesives, laminated films, and packages

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0141] Next, the present invention will be specifically described by way of examples and comparative examples. Unless otherwise specified in the example, "minute" and "%" are mass standards.

Synthetic example 1

[0142] Synthesis Example 1 [Synthesis of Polyol Component A1]

[0143] 560 parts by mass of diethylene glycol was added to a reaction container, and it heated to 80 degreeC, stirring under nitrogen flow. Furthermore, 600 parts by mass of adipic acid was added to the reaction container while stirring, and it heated at 150 degreeC - 240 degreeC, and performed esterification reaction. When the acid value reaches below 5mgKOH / g, the reaction vessel is slowly decompressed, and the reaction is carried out at 200-240°C for 1 hour under 1mmHg to obtain a polyester having hydroxyl groups at both ends with an acid value of 0.8mgKOH / g and a molecular weight of about 840. Polyol resin (hereinafter, this is simply referred to as "polyol component A1").

Synthetic example 2

[0144] Synthesis Example 2 [Synthesis of Polyol Component A2]

[0145] 690 parts by mass of diethylene glycol and 8 parts by mass of trimethylolpropane were added to a reaction container, and heated to 80°C while stirring under a nitrogen stream to dissolve. Furthermore, 810 parts by mass of adipic acid was added to the reaction container, stirring, and it heated at 150 degreeC - 240 degreeC, and performed esterification reaction. When the acid value reaches below 5mgKOH / g, the reaction vessel is slowly decompressed, and the reaction is carried out at 200-220°C for 1 hour under 1mmHg to obtain a polyester having hydroxyl groups at both ends with an acid value of 0.8mgKOH / g and a molecular weight of about 1270. Polyol resin (hereinafter, this is simply referred to as "polyol component A2").

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
viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
Login to View More

Abstract

A curing agent for a two-component adhesive comprising a reaction product (B-1) of a polyhydric alcohol and an isocyanate compound containing at least 4,4'-diphenylmethane diisocyanate and a compound selected from diisocyanates An isocyanate compound (B-2) of at least one of an isocyanurate body, a biuret body, an allophanate body, and an adduct; a two-component adhesive having a multi-component A polyol component A of an alcohol compound, an isocyanate component B containing an isocyanate compound, the isocyanate component B containing the above-mentioned isocyanate compound (B-2); and a laminated film and a package using the same.

Description

technical field [0001] The present invention relates to a curing agent for a two-component adhesive, a two-component adhesive, a laminated film using the same, and a package. Background technique [0002] Laminated film (sometimes called laminated film) used for various packaging materials, labels, etc. is endowed with aesthetics, functionality, and preservation properties by laminating various plastic films, metal foils, paper, etc. , convenience, transportability, especially the package formed by forming the laminated film into a bag shape is used as a package for food, medicine, lotion and the like. [0003] For conventional lamination films, an adhesive dissolved in a volatile organic solvent (sometimes called a solvent-based lamination adhesive) is applied to form a film, and the organic solvent is volatilized by passing through an oven. , The laminated film obtained by the dry lamination method of laminating it with another film is the mainstream, but in recent years,...

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 Patents(China)
IPC IPC(8): C09J201/00B32B27/00B32B27/26B32B27/40C09J175/04
CPCB32B27/00B32B27/26B32B27/40C09J175/04C09J201/00
Inventor 梅津清和田边英男新田修一中根浩平富田大树
Owner DIC CORPORATION
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com