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US 2025/0145871 A1Published application
Polypropylene based hot melt adhesive compositions
AssigneeOrganik Kimya San. Ve Tic. A.S.
InventorsAli ÖNEN, Özge ALPTOGA
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Abstract
The present invention relates to hot melt adhesives comprising propylene-based homopolymers and more particularly to a hot melt adhesive composition comprising a blend of at least two metallocene catalyzed polypropylene (PP)-based polymers having different viscosities and ethylene-based copolymers. The hot melt adhesives of the present invention exhibit thermal resistance to aging and high and low temperature resistance which allows them to adhere different substrates.
Claims15
A hot melt adhesive composition comprising:
- 10 to 50% by weight of at least one metallocene catalyzed propylene-based homopolymer which has a melt viscosity higher than 8,000 mPa s (8,000 cPs) at 190° C.,
- 1 to 30% by weight of at least one metallocene catalyzed propylene-based homopolymer which has a melt viscosity lower than 8,000 mPa s (8,000 cPs) at 190° C.,
- 10 to 25% by weight of at least one ethylene-based copolymer, comprising ethylene and a comonomer selected from vinyl acetate, octene, methyl acrylate, ethyl acrylate, vinyl alcohol, n-butyl acrylate, acrylic acid, n-hexyl acrylate, methylmethacrylate and 2-ethylhexyl acrylate,
- 0 to 4% by weight of at least one polyolefin grafted with maleic anhydride,
- 20 to 60% by weight of at least one tackifier resin,
- 20 to 40% by weight of at least one wax,
- 0 to 5% by weight of at least one stabilizer,
- wherein the percentages are based on the weight of the total composition.
5 more elements
Dependencies are inferred from the claim text.