Attapulgite hot-melt adhesive and preparation method thereof

Abstract

The invention provides an attapulgite hot-melt adhesive and a preparation method thereof. The attapulgite hot-melt adhesive is characterized by comprising 20 to 50% of matrix resin, 20 to 50% of tackifying resin, 10 to 30% of a diluent, 2 to 40% of attapulgite and 0.1 to 1% of an anti-oxidant, wherein the matrix resin is any one or a composite of more selected from the group consisting of ethylene-vinyl acetate copolymer (EVA), ethylene-butyl acrylate copolymer (EBA), ethylene-acrylic acid copolymer (EAA), ethylene-ethyl-acrylic acid copolymer (EEA), styrene-isoprene copolymer (SIS), styrene-butadiene copolymer (SBS) and amorphous alpha-olefin polymer (APAO), the tackifying resin is selected from the group consisting of rosin, polymerized rosin, resin 145, resin 138, terpene resin, petroleum resin and hydrogenated petroleum resin, the diluent may be paraffin, ceresine, polyethylene wax or Fischer-Tropsch wax, the attapulgite may be raw attapulgite or modified attapulgite like viscous attapulgite, brightened attapulgite and acidified attapulgite, the anti-oxidant is 2,6-di-t-butyl-4-methylphenol, i.e., 264, or pentaerythritol tetrakis[beta-(3',5'-di-t-butyl-4'-hydroxyphenyl)propionate], i.e., 1010, and the matrix resin has VA% of 5 to 40 and a melt index of 15 to 400.

Description

technical field [0001] The invention specifically relates to an attapulgite hot melt adhesive and a preparation method thereof. Background technique [0002] Ethylene-vinyl acetate copolymer (EVA)-based hot-melt adhesives can be widely used in civil fields such as book binding, automatic packaging production lines, and carpet backing. As production automation increases, so does the demand for this product. [0003] The product is composed of main resin, tackifying resin, diluent and other raw materials, and its cost is relatively high. One of the means to reduce costs is to add some fillers to the components. The commonly used fillers are: calcium carbonate, silicon micropowder, talcum powder, white carbon black, light white carbon black, metal nitrides, metal oxides, etc., but these The disadvantage of fillers is that they are either heavy in proportion, easy to sink to the bottom, poor in dispersion, or too expensive. For example, United States Patent 6,750,55 provides ...

AI Technical Summary

Problems solved by technology

[0003] The product is composed of main resin, tackifying resin, diluent and other raw materials, and its cost is relatively high

One of the means to reduce costs is to add some fillers to the components. The commonly used fillers are: calcium carbonate, silicon micropowder, talcum powder, white carbon black, light white carbon black, metal nitrides, metal oxides, etc., but these The disadvantages of fillers are either large specificity, easy to sink to the bottom, poor dispersion, or too expensive