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

Two-component solventless adhesive compositions for adhesion to polymeric barrier substrates

A solvent-free, adhesive technology for adhesive types, polyurea/polyurethane adhesives, adhesives, etc.

Active Publication Date: 2020-07-14
DOW GLOBAL TECH LLC +1
View PDF19 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such adhesive compositions have demonstrated limitations when used in laminated structures including polymeric barrier substrates

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
  • Two-component solventless adhesive compositions for adhesion to polymeric barrier substrates
  • Two-component solventless adhesive compositions for adhesion to polymeric barrier substrates
  • Two-component solventless adhesive compositions for adhesion to polymeric barrier substrates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Embodiment 1. A kind of two-component solvent-free adhesive composition, it comprises:

[0067] an isocyanate component comprising isocyanate blends; and

[0068] A polyol component comprising:

[0069] Amine-initiated polyols comprising two or more primary hydroxyl groups and a backbone incorporating tertiary amines, wherein the amine-initiated polyols comprise a functionality of 2 to 12, a hydroxyl number of 5 to 1,830 and a 500 mPa- s to a viscosity at 40°C of 20,000 mPa-s; and

[0070] Silicone based additive.

Embodiment 2

[0071] Embodiment 2. The two-part solvent-free adhesive composition of any preceding or subsequent embodiment, wherein said blend of isocyanates comprises at least two selected from the group consisting of: methylene diphenyl diphenyl Isocyanates, toluene diisocyanate, hexamethylene diisocyanate, and combinations thereof.

Embodiment 3

[0072] Embodiment 3. The two-part solventless adhesive composition of any preceding or following embodiment, wherein the isocyanate blend comprises methylene diphenyl diisocyanate and hexamethylene diisocyanate.

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
thicknessaaaaaaaaaa
Login to View More

Abstract

Two-component solventless polyurethane adhesive compositions are disclosed comprising an isocyanate component comprising an isocyanate blend, and a polyol component comprising an amine-initiated polyol comprising two or more primary hydroxyl groups and a backbone incorporating tertiary amines, wherein the amine-initiated polyol comprises a functionality of from 2 to 12, a hydroxyl number of from 5to 1,830, and a viscosity at 40 deg C of from 500 to 20,000 mPa-s, and a silicone-based additive (e.g., an anti-foaming agent and / or a wetting agent). The adhesive compositions are formulated such that the isocyanate and polyol components can be applied to separate substrates prior to mixing. Laminate structures comprising the disclosed adhesive compositions and further comprising a polymeric barrier substrate are also disclosed.

Description

[0001] References to related applications [0002] This application claims the benefit of Italian Application No. 102017000149966 filed on December 27, 2017. technical field [0003] The present invention relates to solvent-free adhesive compositions. The disclosed adhesive compositions include amine-initiated polyols that provide laminated structures with improved conversion efficiencies, particularly when used in laminated structures having polymeric barrier substrates therein, e.g., polyethylene ( "PE") film, polyamide ("PA") film, ethylene vinyl alcohol ("EVOH") film, and the like. [0004] In some embodiments, the adhesive composition includes an isocyanate component and a polyol component formulated to coat two substrates separately and then bond the two substrates together so that the adhesive composition Mix and react. Specifically, one component of the adhesive composition is configured to be uniformly applied to the surface of the first substrate, and the other c...

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): C08G18/72B32B27/40C08G18/76C08G18/32C08G18/42C08G18/48C09J175/04
CPCB32B27/40C08G18/724C08G18/7664C08G18/7671C08G18/3206C08G18/3275C08G18/42C08G18/48C09J175/04B32B7/12B32B27/08B32B27/32B32B27/306B32B2250/02B32B2250/246B32B2439/70B32B2250/24B32B27/34C09J2301/30B32B2307/7242B32B2323/04B32B2329/04B32B2377/00C08G18/12C08G18/735C08G18/7621C08G18/7642C08G18/7657C08K3/36C09J175/12C09J183/12C09J2475/00
Inventor E·哈布朗特吴杰K·斯哈诺比什T·施密特J·J·鲁潘科克D·文西M·弗拉斯科尼李拓奇
Owner DOW GLOBAL TECH LLC