Quick-drying solvent-free polyurethane adhesive and preparation method thereof

A polyurethane adhesive and solvent-free technology, applied in the direction of polyurea/polyurethane adhesive, adhesive, adhesive type, etc., can solve the problem of long residual time of primary aromatic amine, increased friction coefficient of PE film, and many white spots on product appearance and other problems, to achieve the effect of large-scale industrial production and popularization and application, small strength attenuation, and excellent cooking performance
CN108329883AInactive Publication Date: 2018-07-27SHANGHAI HUAFON NEW MATERIAL R&D TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI HUAFON NEW MATERIAL R&D TECH CO LTD
Publication Date
2018-07-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a quick-drying solvent-free polyurethane adhesive and a preparation method thereof. The quick-drying solvent-free polyurethane adhesive comprises an isocyanate-terminated prepolymer as a component A and a hydroxy compound as a component B, wherein the isocyanate-terminated prepolymer is generated from polyol and polyisocyanates through a reaction; the hydroxy compound as the component B is prepared from polyol, a chain extender, a crosslinking agent, a wetting agent, a leveling agent and an adhesion promotor. The quick-drying solvent-free polyurethane adhesive has the advantages of low viscosity, high curing speed, high peel strength and capabilities of being cut in two hours and resisting steaming at high temperature of 121 DEG C, and has good application prospectand market potential.
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Description

technical field

[0001] The invention relates to a solvent-free polyurethane adhesive and a preparation method thereof. Background technique

[0002] In the composite processing of flexible packaging, the dry composite process has always occupied a dominant position due to its outstanding advantages such as high composite fastness, strong process adaptability, and wide application range. However, a large amount of solvent-based polyurethane adhesive and Thinner, not only the volatilization of the solvent will pollute the environment, but also the residual solvent in the packaging bag will pollute the food and have a negative impact on the health of consumers. As people pay more and more attention to the hygiene and safety of packaging materials and environmental protection, green and environmentally friendly solvent-free polyurethane adhesives, as a substitute for solvent-based laminating adhesives, are gradually becoming the new favorite in the field of composite flexible pa...

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
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