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Ethylene-vinylacetate copolymer resin hot melt adhesive with high melting point, fast curing and low viscosity

A vinyl acetate copolymer resin, hot melt adhesive technology, applied in the direction of mineral oil hydrocarbon copolymer adhesives, adhesives, adhesive types, etc., can solve the problems of slow curing speed, low melting point of EVA hot melt adhesive, and high melt viscosity

Inactive Publication Date: 2011-06-29
上海理日化工新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the price of EVA hot melt adhesive is lower, as mentioned above, EVA hot melt adhesive generally has a lower melting point, slow curing speed, and high melt viscosity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Add the following components into a (200 liter) reaction kettle (Wuxi Xuelang Reactor Factory) and heat to about 180°C to melt, stir and mix, and then discharge and granulate.

[0047] Component Parts by weight

[0048]EVA930 (VA19%, MI400) 50

[0049] Hydrogenated C5 petroleum resin (H-100) 30

[0050] Fischer-Tropsch wax PX-105 20

[0051] Antioxidant 1010 0.5

[0052] After testing according to the above method, the softening point of the formula is 111°C, and the melt viscosity is 1910CP / 180°C. Open time ≤ 3 seconds.

Embodiment 2

[0054] By the same method as in Example 1, feed, melt, stir and mix, and then discharge and granulate.

[0055] Component Parts by weight

[0056] EVA930 (VA19%, MI400) 50

[0057] Hydrogenated C5 petroleum resin (H-100) 30

[0058] Propylene wax PP-202 20

[0059] Antioxidant 1010 0.5

[0060] After testing according to the above method, the softening point of the formulation is 138°C, and the melt viscosity is 4150CP / 180°C. Open time ≤ 3 seconds.

Embodiment 3

[0062] By the same method as in Example 1, feed, melt, stir and mix, and then discharge and granulate.

[0063] Component Parts by weight

[0064] EVA920 (VA19%, MI150) 50

[0065] Hydrogenated C5 petroleum resin (H-100) 30

[0066] Propylene wax PP-202 20

[0067] Antioxidant 1010 0.5

[0068] After testing according to the above method, the softening point of the formulation is 134°C, and the melt viscosity is 6975CP / 180°C. Open time ≤ 3 seconds.

[0069] It can be seen that the above-mentioned raw materials can be used to prepare EVA hot-melt adhesives with high softening point, low viscosity, and fast curing. This type of hot-melt adhesive has the advantages of convenient sizing and high bonding strength in assembly line production. The product has high temperature resistance.

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Abstract

The invention relates to an ethylene-vinylacetate (EVA) copolymer resin hot melt adhesive with high melting point, fast curing and low melting viscosity. The hot melt adhesive comprises the following components in parts by weight: 40-60 parts of ethylene-EVA copolymer resin, 20-40 parts of tackifying resin and 10-30 parts of synthetic wax. The hot melt adhesive is especially suitable for splicing the paper filter element of the air cleaner.

Description

technical field [0001] The invention relates to an ethylene-vinyl acetate copolymer resin hot-melt adhesive, in particular to an ethylene-vinyl acetate copolymer resin (EVA) hot-melt adhesive with a high melting point, fast curing and low melt viscosity. Background technique [0002] Commercially available thermoplastic EVA hot melt adhesives generally have a low melting point, usually around 80-100°C. This kind of hot melt adhesive can generally be used in bonding fields such as packaging, luggage, book binding, shoemaking, and clothing manufacturing, because it does not require high temperature resistance and low bonding strength. [0003] Recently, it has been found that some air filter manufacturers require high-temperature resistant hot-melt adhesives to bond paper filter elements when making air filters. The hot melt adhesive needs to have the characteristics of high softening point, fast curing speed and low melt viscosity, so as to provide convenient and fast condit...

Claims

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Application Information

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IPC IPC(8): C09J123/08C09J157/02
Inventor 翁国建
Owner 上海理日化工新材料有限公司
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