Primer coating for extrusion complex of soft package and applications thereof

A technology of extrusion compounding and flexible packaging, which is applied in the field of fine chemistry, can solve the problems that packaging materials cannot be used for boiling, poor drying of the composite layer, and narrow range of composite substrates, etc., to increase the interface bonding strength and water resistance , improve composite fastness, good release effect

Active Publication Date: 2010-07-21
河北华腾万富达精细化工有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned documents all introduce water-based polyurethane primers, and their common disadvantages are that the scope of applicable composite substrates in the extrusion compounding process is narrow, so the versatility is poor, the drying of the composite layer is not good, and the packaging materials after compounding cannot be used. boiled environment

Method used

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  • Primer coating for extrusion complex of soft package and applications thereof
  • Primer coating for extrusion complex of soft package and applications thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Embodiment 1: Containing hydroxy-terminated styrene-butadiene liquid rubber polyester polyol

[0019] In this example, polyester polyol containing hydroxy-terminated styrene-butadiene liquid rubber is composed of dibasic acid compounded with adipic acid and isophthalic acid, polyol compounded with diethylene glycol and trimethylolpropane, and hydroxy-terminated styrene-butadiene liquid rubber is bulk polymerized Formed, the raw material additions by weight percentage are respectively: 20% adipic acid, 29% isophthalic acid, 45% diethylene glycol, 2% trimethylolpropane, 4% hydroxy-terminated styrene-butadiene liquid rubber %, the polymerization operation is: add isophthalic acid, adipic acid, diethylene glycol, trimethylolpropane, and hydroxy-terminated styrene-butadiene liquid rubber into the reactor, heat up and stir, and the temperature in the kettle is controlled at 150- 300°C, when the water output reaches the required water output (for example, 5-15g of water per 10...

Embodiment 2

[0021] The operation process is the same as in Example 1. In this example, the polyester polyol containing hydroxy-terminated styrene-butadiene liquid rubber is formed by bulk polymerization of dibasic acid compounded with adipic acid and terephthalic acid, diethylene glycol, and hydroxy-terminated styrene-butadiene liquid rubber. , The raw materials calculated by weight percentage are respectively: 22% of adipic acid, 28% of terephthalic acid, 44% of diethylene glycol, and 6% of hydroxy-terminated styrene-butadiene liquid rubber.

Embodiment 3

[0023] The operation process is the same as in Example 1. This example contains polyols composed of hydroxy-terminated styrene-butadiene liquid rubber polyester polyols composed of dibasic acids composed of terephthalic acid and isophthalic acid, ethylene glycol and diethylene glycol compounded polyols and Hydroxy-terminated styrene-butadiene liquid rubber is polymerized. The raw materials in terms of weight percentage are: 20% terephthalic acid, 25% isophthalic acid, 35% diethylene glycol, 12% ethylene glycol, and hydroxy-terminated butyl Benzene liquid rubber 8%.

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Abstract

The invention discloses primer coating for extrusion complex of the soft package and applications thereof. The primer coating is single-component polyurethane polymer polymerized by polyester polyol comprising HTBS and polyisocyanates solution. In the invention, the effective components are prepared from the following raw materials in percentage by weight: 35 to 50 percent of polyester polyol comprising HTBS, 10 to 25 percent of polyisocyanates and 30 to 50 percent of ethyl acetate, wherein the polyester polyol is polymerized by binary acid, polyatomic alcohol and the HTBS main body. The primer coating is used for strengthening the complex fastness in the extrusion complex process of the soft package, has the characteristics of good universality, hydrolysis resistance and low cost and is suitable for the conventional method to randomly carry out extrusion coating of polythene (PE) and extrusion complex between the polythene (PE) and aluminum foils (AL), nylon (NY), biaxial oriented polypropylene (BOPP), polyester (PET) and the like.

Description

Technical field: [0001] The invention belongs to the field of fine chemistry, and in particular relates to a primer used in extrusion and composite processing of flexible packaging materials. Background technique: [0002] Extrusion compounding is a relatively economical and practical compounding processing method widely used in the production of flexible packaging materials. The principle is that thermoplastic resin materials such as polyethylene are melted by an extruder, and then extruded in a film form through a die, and the film-shaped molten resin is mixed with the other two substrates (the first substrate) between two rollers. and the second base material), and after cooling, a composite film is made into a composite flexible packaging material. Extrusion composite technology has the advantages of low equipment cost, less investment, clean production environment, no residual solvent in the composite film, high production efficiency, and easy operation. Therefore, the...

Claims

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Application Information

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IPC IPC(8): C09D175/06B65D65/40
Inventor 李家臻朱玉合杜庆丽
Owner 河北华腾万富达精细化工有限责任公司
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