METHOD OF PRODUCING MELT ADHESIVE

FIELD: technological processes.SUBSTANCE: invention relates to adhesive materials and more specifically to methods of producing polymer hot-melt adhesives intended for forming adhesive bonds between different materials, including metals, characterized by high strength of formed bond in extended temp...

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Hauptverfasser: Ilin Sergej Olegovich, Kostyuk Anna Vladimirovna, Petrukhina Natalya Nikolaevna, Maksimov Anton Lvovich, Antonov Sergej Vyacheslavovich, Smirnova Nina Mikhajlovna
Format: Patent
Sprache:eng ; rus
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Zusammenfassung:FIELD: technological processes.SUBSTANCE: invention relates to adhesive materials and more specifically to methods of producing polymer hot-melt adhesives intended for forming adhesive bonds between different materials, including metals, characterized by high strength of formed bond in extended temperature range of application. Disclosed is a method of producing a hot-melt adhesive, comprising hydrogenating an oil-polymer resin obtained by copolymerisation of monomers - vinyltoluene, dicyclopentadiene, indene and α-methylstyrene, mixing the hydrogenated petroleum polymer resin with a copolymer of ethylene with vinyl acetate and polyethylene wax and cooling, characterized by that styrene is used as a monomer in the ratio of monomers in resin, wt%: styrene 30-50; vinyltoluene 10-20; dicyclopentadiene 30-40; indene 4-12; α-methylstyrene 4-8, hydrogenation is carried out to obtain petroleum polymer resin, in which is hydrogenated 10-55 wt% aromatic fragments, and when mixing first, the hydrogenated oil-polymer resin is dissolved in the molten polyethylene wax to obtain a homogeneous solution, then a copolymer of ethylene and vinyl acetate is added to the obtained solution and mixed with a two-rotor mixer at 110-130 °C to obtain a homogeneous mixture in the following ratio of melt components, wt%: hydrogenated oil-polymer resin 10-40; polyethylene wax 10-40; copolymer of ethylene with vinyl acetate - balance.EFFECT: increased elasticity of glue-melt and its adhesion to metal, expansion of temperature range of application and reduction of its viscosity at cost effectiveness of production.1 cl, 1 tbl, 6 ex Изобретение относится к области клеящих материалов и, более конкретно, к способам получения полимерных клеев-расплавов, предназначенных для формирования адгезионных соединений между различными материалами, в том числе металлами, характеризующихся высокой прочностью образованной связи в расширенном температурном диапазоне применения. Предложен способ получения клея-расплава, включающий гидрирование нефтеполимерной смолы, полученной сополимеризацией мономеров - винилтолуола, дициклопентадиена, индена и α-метилстирола, смешение гидрированной нефтеполимерной смолы с сополимером этилена с винилацетатом и полиэтиленовым воском и охлаждение, отличающийся тем, что в качестве мономера дополнительно используют стирол при соотношении мономеров в смоле, мас.%: стирол 30-50; винилтолуол 10-20; дициклопентадиен 30-40; инден 4-12; α-метилстирол 4-8, гидрирование проводят до п