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US 2016/0102230 A1Published application
Polyolefin-Based Hot Melt Adhesives With Improved Processing And Bonding Performance
AssigneeBostik SA
InventorsSteven Daniel Gray, David Frederic Freund, Richard Edward Hamann, Miao Hu, Fabrice Nicolas-Henri Flores
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Abstract
A hot melt adhesive made from a blend of a polypropylene-based polymer, a polyolefin elastomer, and an amorphous polyolefin. These adhesives exhibit excellent molten and pre-set flow allowing them to wet out substrates yet develop properties needed to form and maintain strong bonds making them useful for hygiene, construction, and packaging applications.
Claims20
A hot melt adhesive, comprising:
- (a) about 1% to about 30% by weight of a polypropylene random copolymer, or a polypropylene impact copolymer, or mixtures thereof;
- (b) about 2% to about 60% by weight of a polyolefin elastomer, or mixtures thereof;
- (c) about 1% to about 40% by weight of an amorphous polyolefin;
- (d) about 5% to about 70% by weight of a tackifying resin;
- (e) 0% to about 60% by weight of a plasticizer;
- (f) 0% to about 5% of a stabilizer or antioxidant;
- wherein the components total 100% by weight of the composition, and the viscosity of the composition is equal to or less than about 40,000 cP at 163° C.
4 more elements
A hot melt adhesive, comprising:
- (a) about 8% to about 12% by weight of a polypropylene random copolymer, or mixtures thereof;
- (b) about 22% to about 28% by weight of a low melting point metallocene catalyzed polypropylene homopolymer elastomer having a density of about 0.87 g/cc, or mixtures thereof;
- (c) about 10% to about 15% by weight of an amorphous polyalphaolefin;
- (d) about 21% to about 27% by weight of ahydrocarbon tackifying resin;
- (e) about 24% to about 29% by weight of a mineral oil plasticizer;
- (f) 0% to about 5% of a stabilizer or antioxidant;
- wherein the components total 100% by weight of the composition, and the viscosity of the composition is equal to or less than about 10,000 cP at 163° C.
4 more elements
Dependencies are inferred from the claim text.