The present disclosure relates to polyolefin-based compositions made from or containing (A) a butene-1 polymer grafted with an unsaturated monomer, (B) a second polyolefin polymer, and (C) an ethylene-propylene elastomer. In some embodiments, the polyolefin-based composition is further made from or contains an additives composition. In additional embodiments, the polyolefin-based composition is made from or contains a heterophasic polypropylene copolymer.

The present disclosure relates to polyolefin-based compositions made from or containing (A) a butene-1 polymer grafted with an unsaturated monomer, (B) a second polyolefin polymer, and (C) an ethylene-propylene elastomer. In some embodiments, the polyolefin-based composition is further made from or contains an additives composition. In additional embodiments, the polyolefin-based composition is made from or contains a heterophasic polypropylene copolymer.

A plasticizer may be suitable for resins and contain an amorphous propylenic polymer having a weight-average molecular weight (Mw), measured according to a GPC method, in a range of from 5,000 to 30,000 and having a molecular weight distribution (Mw/Mn) of 3.0 or less. The amorphous propylenic polymer may be a propylene homopolymer

The hot melt adhesive composition includes from 1% by weight to less than 10% by weight total polymer content, of which less than 10% by weight, based on the hot melt adhesive composition, is a single site-catalyzed propylene polymer selected from the group consisting of a single site-catalyzed propylene homopolymer, a single site-catalyzed propylene/alpha-olefin copolymer, and combinations thereof, liquid plasticizer, and at least 45% by weight of a hydrocarbon tackifying agent having a softening point greater than 90° C.

Described herein is an absorbent article. The absorbent article includes an assembly of components and an adhesive composition joining at least two of the assembly of components together. The adhesive composition includes from about 50 wt. % to about 80 wt. % of one or more copolymers and a blend of one or more heterophase copolymers. The one or more copolymers include from about 30 mole % to about 70 mole % of monomer units selected from ethylene. 1-butene, and mixtures thereof. The one or more copolymers also include from about 30 mole % to about 70 mole % of propene monomer units. The adhesive composition is free of polyisobutylene and has a viscosity of from about 2,000 mPa.Math.s to about 11,500 mPa.Math.s at 150° C.

The present invention provides polymer compositions having improved corrosivity, color stability and clarity. Also disclosed is a process of preparing the polymers. The process may comprise incorporating into the polymer an acid neutralizing amount of an amorphous aluminum silicate. The amorphous aluminum silicate may be present in the polymer in an amount such that the polymer composition having a Corrosivity Index of less than 6. A refractive index of the amorphous aluminum silicate may be the same or substantially the same as a refractive index of the polymer.

A multi-modal polymer blend of at least three fractions as determined by TREF is provided. The blend comprises a first propylene-based polymer, a second propylene-based polymer; and a third propylene-based polymer; wherein when subjected to TREF, the polymer blend exhibits: a first fraction that is soluble at −15° C. in xylene, the first fraction having an isotactic (mm) triad tacticity of about 55 mol % to about 85 mol %; a second fraction that is insoluble at −5 C in xylene or dichlorobenzene and soluble at 40° C. in xylene or dichlorobenzene; and a third fraction that is insoluble at 70° C. in xylene or dichlorobenzene and having an isotactic (mm) triad tacticity of about 85 mol % to about 98 mol %. Also provided are hot melt adhesive compositions comprising the polymer blend, tackifier, wax; and optionally a nucleating agent, articles containing the adhesive and methods of fabricating the articles.

A multi-modal polymer blend of at least three fractions as determined by TREF is provided. The blend comprises a first propylene-based polymer, a second propylene-based polymer; and a third propylene-based polymer; wherein when subjected to TREF, the polymer blend exhibits: a first fraction that is soluble at −15° C. in xylene, the first fraction having an isotactic (mm) triad tacticity of about 55 mol % to about 85 mol %; a second fraction that is insoluble at −5 C in xylene or dichlorobenzene and soluble at 40° C. in xylene or dichlorobenzene; and a third fraction that is insoluble at 70° C. in xylene or dichlorobenzene and having an isotactic (mm) triad tacticity of about 85 mol % to about 98 mol %. Also provided are hot melt adhesive compositions comprising the polymer blend, tackifier, wax; and optionally a nucleating agent, articles containing the adhesive and methods of fabricating the articles.

A hot melt adhesive composition, which may be used as a construction adhesive in hygiene articles, comprises a first polymer comprising a unimodal copolymer of propylene and ethylene and having a weight average molecular weight of between about 5,000 and 60,000 daltons; a second polymer comprising a copolymer of propylene and ethylene and having a weight average molecular weight of at least 100,000 daltons; a tackifying resin having a Ring & Ball softening point of at most 115° C.; and a plasticizer. The composition demonstrates good peel strength and good shear resistance and is sprayable, with a sufficiently low viscosity, at low application temperatures, such as at about 121° C.

A hot melt adhesive composition, which may be used as a construction adhesive in hygiene articles, comprises a first polymer comprising a unimodal copolymer of propylene and ethylene and having a weight average molecular weight of between about 5,000 and 60,000 daltons; a second polymer comprising a copolymer of propylene and ethylene and having a weight average molecular weight of at least 100,000 daltons; a tackifying resin having a Ring & Ball softening point of at most 115° C.; and a plasticizer. The composition demonstrates good peel strength and good shear resistance and is sprayable, with a sufficiently low viscosity, at low application temperatures, such as at about 121° C.