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Solventless adhesive composition and method for preparing thereof

A technology of adhesives and compositions, applied in the direction of adhesive types, polyurea/polyurethane adhesives, adhesives, etc., which can solve the problem of deterioration of the adhesive strength of adhesive compositions and the inability of silane adhesion promoters to withstand acid resistance And other issues

Pending Publication Date: 2021-12-03
DOW GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, silane adhesion promoters cannot withstand acid resistance, and the bond strength of the adhesive composition will deteriorate significantly after acid treatment

Method used

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  • Solventless adhesive composition and method for preparing thereof
  • Solventless adhesive composition and method for preparing thereof
  • Solventless adhesive composition and method for preparing thereof

Examples

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[0054] Certain embodiments of the invention will now be described in the following examples, wherein all parts and percentages are by weight unless otherwise specified. However, the scope of the present invention is of course not limited to the formulations set forth in the examples. Rather, the examples are merely inventive for the present invention.

[0055] Information on the raw materials used in the examples is listed in Table 1 below:

[0056] Table 1. Raw materials used in examples

[0057]

[0058] The isocyanate components (urethane prepolymers) of Examples (Ex.) 1 to 4 and Comparative Examples (CEx.) 1 to 2 are used in percent by weight based on the total weight of the isocyanate component according to the procedure described below using the table The relative content of the raw materials listed in 2 was synthesized.

[0059] The isocyanate component (urethane prepolymer) was synthesized in a 1 L glass reactor according to a typical polyurethane prepolymer prep...

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Abstract

A solventless adhesive composition is provided. The solventless adhesive composition comprises (A) an isocyanate prepolymer having a side chains represented by -R2-(0-R1-0)n-R3 and (B) an isocyanate-reactive component, and exhibits improved bond strength, heat seal strength, adhesive COF property and optical appearance. A laminate product prepared with said solventless adhesive composition as well the method for preparing the laminate product are also provided.

Description

technical field [0001] The present invention relates to a solvent-free adhesive composition and a method for its preparation, a laminated product comprising an adhesive layer derived from the solvent-free adhesive composition, and a method for its preparation. Adhesive layers prepared from the solventless adhesive composition exhibit improved bond strength, heat seal strength, adhesive COF characteristics, and optical appearance. Background technique [0002] The adhesive composition is suitable for a variety of applications. For example, it can be used to bond together substrates such as polyethylene, polypropylene, polyester, polyamide, metal, paper or cellophane to form composite films, ie laminates. The use of adhesives in different lamination end use applications is generally known. For example, adhesives are useful in the manufacture of film / film and film / foil laminates for use in the packaging industry, especially for food packaging. Adhesives used in lamination ap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/06C09J175/08C08G18/10C08G18/12
CPCC09J175/06C09J175/08C08G18/12C08G18/4825C08G18/42C08G18/4833C08G18/4808C08G18/4018C08G18/7671C08G18/48C09J2301/30C09J2301/162C08G2170/00C09J2475/00
Inventor 白晨艳
Owner DOW GLOBAL TECH LLC