摘要:
Polyolefin blends and processes for forming polyolefin blends are described herein. The blends generally include a polyolefin and a monomer system including triacrylate monomers. The blends may further include one or more chain transfer agents.
摘要:
Articles of manufacture and a method of making the articles are provided. The articles of manufacture comprise CpFlu metallocene catalyzed polypropylene homopolymers and C2–C3 random copolymers having narrow molecular weight distributions and low xylene solubles (or extractables) contents. Because of a number of desirable properties, the polypropylene homopolymers and C2–C3 random copolymers may be used to prepare a wide variety of useful articles, including but not limited to cast films, such as packaging; fibers suitable for use in fabrics and carpet applications, and injection and blow molded items such as bottles.
摘要:
A method comprising contacting a polypropylene, an acrylate-containing compound, and an initiator to form a composition, and reactive extruding the composition to form a polymer blend. A method comprising contacting a polypropylene, a multi-functional acrylate monomer, and an initiator to form a composition, reactive extruding the composition to form a reactive extruded composition, and forming the reactive extruded composition into a film wherein the reactive extruded composition has a melt flow rate that is reduced by equal to or greater than 5% when compared to neat polypropylene.
摘要:
Polyolefin blends and processes for forming polyolefin blends are described herein. Such processes generally include providing a polyolefin, providing a concentrated monomer system including a first monomer and a first portion of the polyolefin and blending the concentrated monomer system with a second portion of the polyolefin to form a modified polyolefin.
摘要:
Processes of forming a fiber article and articles formed therefrom are described herein. The processes generally include providing a propylene-based polymer; contacting the propylene-based polymer with polylactic acid in the presence of a reactive modifier, a non-reactive modifier or a combination thereof to form a polymeric blend, wherein the reactive modifier is selected from epoxy-functionalized polyolefins and the non-reactive modifier comprises an elastomer; and forming the polymeric blend into a fiber article.
摘要:
Polyolefin blends and processes for forming polyolefin blends are described herein. Such processes generally include providing a polyolefin, providing a concentrated monomer system including a first monomer and a first portion of the polyolefin and blending the concentrated monomer system with a second portion of the polyolefin to form a modified polyolefin.
摘要:
A fiber comprising a propylene polymer composition is disclosed. The composition comprises a resin blend of from about 75 to about 95 weight percent of a Ziegler-Natta or metallocene catalyzed isotactic polypropylene homopolymer, and from about 95 to about 75 weight percent of a metallocene catalyzed polypropylene copolymer. In this blend the copolymer component includes a comonomer in an amount from about 0.05 to about 25 weight percent, based on the copolymer. Non-woven fabrics prepared by thermally bonding the inventive fibers show improved tensile strengths, particularly machine direction, at comparable basis weights that are at least about 5 percent higher than those of fabrics prepared using identical preparation techniques but from the isotactic polypropylene homopolymer alone.
摘要:
Bicomponent fibers, methods of forming bicomponent fibers and articles formed from bicomponent fibers are described herein. The bicomponent fibers generally include a sheath component and a core component, wherein the sheath component consists essentially of a first metallocene polypropylene and the core component consists essentially of a second metallocene polypropylene.
摘要:
The present invention relates to fibers, in particular to as-spun fibers, having an improved bonding performance. In particular, the present invention relates to as-spun fibers comprising a metallocene random copolymer of propylene and one or more comonomers. The present invention further relates to nonwovens comprising such fibers and to a process for producing such fibers and nonwovens. The fibers and nonwovens of the present invention are characterized by a wider bonding window as the prior art fibers and nonwovens.
摘要:
Bicomponent fibers, methods of forming bicomponent fibers and articles formed from bicomponent fibers are described herein. Tile bicomponent fibers generally include a sheath component and a core component, wherein the sheath component consists essentially of a first metallocene polypropylene and the core component consists essentially of a second metallocene polypropylene.