Methods of bonding a pressure-sensitive adhesive to a substrate are provided. The methods include heating a styrenic block copolymer composition to provide an adhesive melt composition, wherein the styrenic block copolymer composition contains a hard segment block with a glass transition temperature of from 90° C. to 220° C.; masticating the adhesive melt composition; delivering the adhesive melt composition onto the substrate at a temperature that exceeds the glass transition temperature of the hard segment block by from 20° C. to 150° C.; and cooling the adhesive melt composition to obtain a bonded pressure-sensitive adhesive. Optionally, the substrate can be a non-film substrate, or the styrenic block copolymer composition can be provided in a core-sheath filament that includes a styrenic block copolymer core and a sheath that is non-tacky at ambient temperature.

Methods of bonding a pressure-sensitive adhesive to a substrate are provided. The methods include heating a styrenic block copolymer composition to provide an adhesive melt composition, wherein the styrenic block copolymer composition contains a hard segment block with a glass transition temperature of from 90° C. to 220° C.; masticating the adhesive melt composition; delivering the adhesive melt composition onto the substrate at a temperature that exceeds the glass transition temperature of the hard segment block by from 20° C. to 150° C.; and cooling the adhesive melt composition to obtain a bonded pressure-sensitive adhesive. Optionally, the substrate can be a non-film substrate, or the styrenic block copolymer composition can be provided in a core-sheath filament that includes a styrenic block copolymer core and a sheath that is non-tacky at ambient temperature.

Ethylene-based polymers are generally characterized by a high load melt index of less than 12 g/10 min, a weight-average molecular weight from 200,000 to 550,000 g/mol, a number-average molecular weight from 18,000 to 48,000 g/mol, a CY-a parameter of less than 0.12, a tan δ at 0.1 sec.sup.−1 from 0.5 to 0.9 degrees, a tan δ at 100 sec.sup.−1 from 0.5 to 0.75 degrees, and a viscosity at 0.001 sec.sup.−1 from 1.3×10.sup.6 to 1×10.sup.7 Pa-sec. These ethylene polymers can be produced by peroxide-treating a bimodal molecular weight distribution dual metallocene-catalyzed resin, and can be used to produce blow molded bottles and other blow molded products.

Ethylene-based polymers are generally characterized by a high load melt index of less than 12 g/10 min, a weight-average molecular weight from 200,000 to 550,000 g/mol, a number-average molecular weight from 18,000 to 48,000 g/mol, a CY-a parameter of less than 0.12, a tan δ at 0.1 sec.sup.−1 from 0.5 to 0.9 degrees, a tan δ at 100 sec.sup.−1 from 0.5 to 0.75 degrees, and a viscosity at 0.001 sec.sup.−1 from 1.3×10.sup.6 to 1×10.sup.7 Pa-sec. These ethylene polymers can be produced by peroxide-treating a bimodal molecular weight distribution dual metallocene-catalyzed resin, and can be used to produce blow molded bottles and other blow molded products.

Provided are a liquid hydrocarbon production method for obtaining a liquid hydrocarbon-containing rubber composition, including heating a crosslinked rubber at 300° C. or lower in a reaction solvent that contains an aldehyde having a hydrocarbon group with 2 or more carbon atoms and having a boiling point of 230° C. or lower; as well as a re-crosslinked rubber obtained from the rubber composition produced in the production method, and a tire and a rubber industrial product. According to the liquid hydrocarbon production method, a liquid hydrocarbon having a higher molecular weight can be produced at a high decomposition proportion even under mild conditions.

Provided are a liquid hydrocarbon production method for obtaining a liquid hydrocarbon-containing rubber composition, including heating a crosslinked rubber at 300° C. or lower in a reaction solvent that contains an aldehyde having a hydrocarbon group with 2 or more carbon atoms and having a boiling point of 230° C. or lower; as well as a re-crosslinked rubber obtained from the rubber composition produced in the production method, and a tire and a rubber industrial product. According to the liquid hydrocarbon production method, a liquid hydrocarbon having a higher molecular weight can be produced at a high decomposition proportion even under mild conditions.

Methods for processing LDPE recyclates including, but not limited to, polyethylene and polypropylene and compositions therefrom are provided. LDPE recyclate can be visbroken to improve processing characteristics and/or devolatilized to remove waste byproducts to produce processed LDPE recyclates. Processed LDPE recyclates are compounded with pre-consumer polyolefins to produce blend compositions having acceptable or even improved processing characteristics. Such pre-consumer polyolefins can also be visbroken to further tailor processing characteristics of such polymer blends. A combination of extruders and/or extruder zones can be used at the same or different locations for visbreaking and/or compounding of both LDPE recyclate and/or pre-consumer polyolefins.

Methods for processing LDPE recyclates including, but not limited to, polyethylene and polypropylene and compositions therefrom are provided. LDPE recyclate can be visbroken to improve processing characteristics and/or devolatilized to remove waste byproducts to produce processed LDPE recyclates. Processed LDPE recyclates are compounded with pre-consumer polyolefins to produce blend compositions having acceptable or even improved processing characteristics. Such pre-consumer polyolefins can also be visbroken to further tailor processing characteristics of such polymer blends. A combination of extruders and/or extruder zones can be used at the same or different locations for visbreaking and/or compounding of both LDPE recyclate and/or pre-consumer polyolefins.

Methods for processing HDPE and/or MDPE recyclates including, but not limited to, polyethylene and polypropylene and compositions therefrom are provided. HDPE and/or MDPE recyclate feedstocks can be visbroken to improve processing characteristics and/or devolatilized to remove waste byproducts to produce processed HDPE recyclate and/or processed MDPE recyclates. Processed HDPE recyclate and/or processed MDPE recyclates are compounded with pre-consumer polyolefins to produce blend compositions having acceptable or even improved processing characteristics. Such pre-consumer polyolefins can also be visbroken to further tailor processing characteristics of such polymer blends. A combination of extruders and/or extruder zones can be used at the same or different locations for visbreaking and/or compounding of both HDPE and/or MDPE recyclate and/or pre-consumer polyolefins.

Methods for processing HDPE and/or MDPE recyclates including, but not limited to, polyethylene and polypropylene and compositions therefrom are provided. HDPE and/or MDPE recyclate feedstocks can be visbroken to improve processing characteristics and/or devolatilized to remove waste byproducts to produce processed HDPE recyclate and/or processed MDPE recyclates. Processed HDPE recyclate and/or processed MDPE recyclates are compounded with pre-consumer polyolefins to produce blend compositions having acceptable or even improved processing characteristics. Such pre-consumer polyolefins can also be visbroken to further tailor processing characteristics of such polymer blends. A combination of extruders and/or extruder zones can be used at the same or different locations for visbreaking and/or compounding of both HDPE and/or MDPE recyclate and/or pre-consumer polyolefins.