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Formula of polyurethane packaging material

A packaging material, polyurethane technology, applied in polyurea/polyurethane adhesives, adhesive types, adhesive additives, etc., can solve problems such as poor storage stability

Inactive Publication Date: 2019-03-05
王家盛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcoming of the poor storage stability of the polyurethane encapsulation material prepared by the polyurethane encapsulation material formula in the prior art, to provide a kind of polyurethane encapsulation material formula and containing Encapsulating material for this formulation

Method used

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Examples

Experimental program
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Embodiment Construction

[0015] The technical solutions of the present invention are further described below in conjunction with specific embodiments.

[0016] A formulation of a polyurethane encapsulating material, the formulation containing polyether polyol and diphenylmethylene diisocyanate, characterized in that the diphenylmethylene diisocyanate is liquefied 4,4'-diphenylmethylene base diisocyanate.

[0017] In this embodiment, based on the total amount of the formula, the content of the polyether polyol is 50-80% by weight, and the content of the liquefied 4,4'-diphenylmethylene diisocyanate is 20-50% by weight. weight%.

[0018] In this embodiment, the polyether polyol is selected from one or more of polyether diol Diol-2000, polyether triol 330N, and polyether triol 3050.

[0019] In this embodiment, the liquefied 4,4'-diphenylmethylene diisocyanate is carbodiimide-ketoureaimide modified 4,4'-diphenylmethylene diisocyanate.

[0020] In this embodiment, the content of isocyanate groups in th...

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PUM

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Abstract

The invention relates to a formula of a polyurethane packaging material. The formula contains polyether polyol and methylene diphenyl diisocyanate, wherein the methylene diphenyl diisocyanate is liquefied 4,4'-methylenediphenyl diisocyanate. The polyurethane packaging material prepared by the formula is a high-strength single-component wet-cured polyurethane packaging material, has excellent storage stability and short curing time, is convenient to use, has excellent adhesive force, and does not generate bubbles during wet curing, so that the polyurethane packaging material is particularly suitable for sealing and bonding of a plurality of plastics such aspolyvinyl chloride (PVC), polypropylene (PP), acrylonitrile butadiene styrene (ABS) and the like, and is especially suitable for packaging memory cards.

Description

technical field [0001] The present invention relates to a formulation of a polyurethane encapsulating material and an encapsulating material containing the formulation. Background technique [0002] Polyurethane (PU) adhesives are adhesives containing urethane groups (-NHCOO) and / or isocyanate groups (-NCO) in the molecular chain. Polyurethane adhesives have good adhesion to various substrates because of the large number of polar groups and reactive reactive groups in the host resin molecules. By adjusting its raw materials and formulas, polyurethane adhesives with different uses and bonding of different materials can be designed. [0003] Polyurethane adhesives were first developed in the 1940s and developed rapidly after the 1980s, mainly including polyisocyanate solvent adhesives, thermoplastic polyurethane solvent adhesives, reactive one-component solvent adhesives, reactive two-component solvent adhesives, and solvent-free adhesives. , water dispersion adhesive, hot m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/79C08G18/48C09J175/08C09J11/06
CPCC08G18/797C08G18/4825C08G18/4829C08K5/12C08K5/5415C08K5/544C09J11/06C09J175/08
Inventor 王家盛
Owner 王家盛
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