Hot melt adhesive composition based on a blend of amorphous poly-α-olefin and syndiotactic polypropylene
AssigneeBostik Findley, Inc.
InventorsBaoyu Wang, Chongyao Zhang
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Abstract
A hot melt adhesive composition based on a polymer blend of syndiotactic polypropylene (SPP) and atactic poly-α-olefin (APAO). The composition contains about 15%-80% by weight of the SPP/APAO blend, about 15%-65% by weight of a compatible tackifier, about 0%-35% by weight of a plasticizer, about 0%-3% by weight of a stabilizer, and optionally, about 0%-30% by weight of a wax. The adhesive composition may be used in a number of applications such as, for example, in disposable nonwoven hygienic articles, paper converting, flexible packaging, wood working, carton and case sealing, labeling and other assembly applications.
Claims21
A hot melt adhesive composition comprising:
- (a) about 15% to about 70% by weight of a blend of syndiotactic polypropylene (SPP) polymer and amorphous poly-α-olefin (APAO) polymer, said blend having a SPP to APAO ratio from about 10% by weight of SPP and 90% by weight of APAO to about 90% by weight of SPP and 10% by weight of APAO;
- (b) about 15% to 65% by weight of a tackifier;
- (c) about 0% to 35% by weight of a plasticizer;
- (d) about 0% to 3% by weight of a stabilizer.
Dependencies are inferred from the claim text.