Abstract:
A cocatalyst or cocatalyst component, including a compound corresponding to the formula: (A*nulla)b(Z*J*j)nullcd, wherein: A* is a cation of from 1 to 80 atoms, not counting hydrogen atoms, Z* is an anion group of from 1 to 50 atoms, not counting hydrogen atoms, containing two or more Lewis base sites; J* is a Lewis acid of from 1 to 80, not counting hydrogen atoms, coordinated to at least one Lewis base site, and optionally two or more such J* groups may be joined together in a moiety having multiple Lewis acidic functionality, j is from 2 to 12 and a, b, c, and d are integers from 1 to 3, with the proviso that anullb is equal to cnulld, and provided further that one or more of A*, Z* or J* comprises a hydroxyl group or a polar group containing quiescent reactive functionality.
Abstract:
A process for making an interpolymer product that includes contacting at least one null-olefinic monomer and at least one vinyl or vinylidene monomer in the presence of at least a first single site catalyst and second single site catalyst in a reactor system, and effectuating the polymerization of the monomers in the reactor.
Abstract:
A polymerization process comprises contacting one or more olefinic comonomers in the presence of at least a high molecular weight catalyst and at least a low molecular weight catalyst in a single reactor; and effectuating the polymerization of the olefinic comonomers in the reactor to obtain an olefin polymer. Preferably, both catalysts have the ability to incorporate a substantially similar amount of comonomers in the olefin polymer. The polymers produced by the process may have a relatively higher level of long chain branching while maintaining a relatively narrow molecular weight distribution, i.e., MWD less than about 6. These interpolymers may exhibit processability similar to or better than LDPE but have physical properties similar to metallocene catalyzed polymers.
Abstract:
The present invention provides one or more viewports formed at predetermined locations that allow inspections of an inside member of a closed wall system. The viewports can be disposed at predetermined locations that do not significantly impair the structural characteristics of the outward layers or inside members. In at least one embodiment, the viewports are formed in one or more outward layers during fabrication of a closed wall system. Generally, the closed wall system can be mass-produced in a manufacturing facility, although the closed wall system may be assembled at the job site.
Abstract:
The present invention provides an engineered closed wall system that includes one or more preinstalled conduits installed during fabrication of the closed wall system and an associated box that is positioned to intersect the preinstalled conduit at a standard connection port of the box and in a predetermined location. The location of the conduit and/or box can vary according to job-specific requirements. Advantageously, the conduit can be installed equidistant from the first and second outward layers. Specific boxes, and any ring extensions mounted to the boxes, can be sized to flexibly mount from either outward layer and still be substantially flush with the face of the outward layer and still intersect the conduit at a standard connection port provided on the box.
Abstract:
The subject invention is directed to fibers and polymer blend compositions having improved bonding performance. In particular, the subject invention pertains to a multiconstituent fiber comprising a blend of a polypropylene polymer and a high molecular weight (i.e. low melt index or melt flow) ethylene polymer. The subject invention further pertains to the use of the fiber and polymer blend composition which has improved bonding performance in various end-use applications, especially woven and nonwoven fabrics such as, for example, disposable incontinence garments and diapers. The fibers have good spinnability and provide fabrics having improved bond strength and elongation.