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Adhesive composition

A technology of adhesives and compositions, applied in the direction of adhesive types, adhesives, polyurea/polyurethane adhesives, etc., can solve the problems of short pot life, slow curing speed, and no curing speed of pot life. Achieve improved handling, excellent pot life

Pending Publication Date: 2021-12-21
DOW GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, heretofore known adhesive compositions comprising known catalysts: (1) have good pot life and slow cure speed; or (2) fast cure speed and short pot life; but known catalysts do not Exhibits good pot life and fast cure speed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0050] Examples 1-4 and Comparative Examples A and B

[0051] Application Performance Evaluation of 2K Solvent-free (SL) PU Adhesives with Copolymerization Crystallization Catalysts

[0052] Each of the four copolymerization crystallization catalysts described in Table II was added to a two-component (2k) solvent-free (SL) polyurethane (PU) adhesive composition to form the adhesive composition of the present invention; And evaluate the performance of the adhesive composition. The pot life and bond strength development properties of the adhesive compositions were evaluated. The performance results (pot life and bond strength development) of the inventive adhesive compositions (inventive examples 1-4) containing the co-polymerization crystallization catalysts Cat. 1-4 described in Table II were compared with the following, respectively: (1) a 2k SL PU adhesive composition in the absence of a copolymeric crystallization catalyst (Comparative Example A), and (2) a 2k SL PU a...

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Abstract

An adhesive composition including a reaction mixture of: (A) at least one isocyanate-containing compound; (B) at least one polyol compound; and (C) a copolymerized crystalline latent catalyst; a process for making the above adhesive composition; and a laminate structure made using the above adhesive composition.

Description

technical field [0001] The present invention relates to an adhesive composition; more particularly, the present invention relates to a polyurethane adhesive composition comprising a copolymerized crystalline polymer functioning as a latent catalyst. Background technique [0002] Solvent-free polyurethane (PU) adhesives are usually formulated from two components, called two-component (2K) systems; where the first component of the 2K system is isocyanate prepolymer, the second component of the 2K system The first component is a polyol. The two components are mixed together just before applying the resulting mixture. When the two components are mixed, a chemical reaction occurs between the isocyanate (NCO) groups of the isocyanate prepolymer and the hydroxyl (OH) groups of the polyol. This reaction causes the viscosity of the adhesive to increase and eventually causes the adhesive to cure. [0003] The period of time after which the viscosity of the adhesive formulation or c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C09J5/02C08G18/16
CPCC09J175/04C08G18/10C08G18/246B32B2270/00B32B2250/26B32B7/12B32B2255/10B32B5/024B32B2250/02B32B2405/00B32B5/26B32B29/02B32B29/005B32B2439/70B32B2255/205B32B2439/46B32B27/36B32B2250/20B32B15/14B32B5/022B32B15/12B32B15/09B32B15/085B32B27/32B32B27/08B32B2250/24C09J175/08C08G18/4829C08G18/36B01J31/123C08G18/168
Inventor 白晨艳陈红宇T·施密特余英丰董海军
Owner DOW GLOBAL TECH LLC
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