Abstract:
Substantially isotaclic propylene interpolyraets comprise (A) at least 60 weight percent (wt%) units derived from propylene, and (B) between greater than zero and 40 wt% units derived from ethylene, the propylene interpolyrner further characterized by at least one of the following properties: (1 ) a ratio of less than 1 measured at interpolyraer nurnbcr average molecular weight (Mn), (2) a relative compositional drift of less than 50%, arid (3) propylene chain segments having a chain isotacticity triad index of at least 70 mole percent.
Abstract:
The invention provides a composition comprising the following: at least one olefin multi-block interpolymer, at least one thermoplastic polyurethane, and at least one polydiene-based and/or polydiol-based polyurethane. These compositions are well-suited for promoting the adhesion between polar (for example, polyester, polycarbonate and polylactic acid) and non-polar materials and for the manufacture of, among other things, films, fibers, sheets and tie layers, tubes, adhesives, dispersions, protective apparel, footwear, coatings, laminates and foams.
Abstract:
The invention provides a composition comprising the following: at least one olefin multi-block interpolymer, at least one thermoplastic polyurethane, and at least one polydiene-based and/or polydiol-based polyurethane. These compositions are well-suited for promoting the adhesion between polar (for example, polyester, polycarbonate and polylactic acid) and non-polar materials and for the manufacture of, among other things, films, fibers, sheets and tie layers, tubes, adhesives, dispersions, protective apparel, footwear, coatings, laminates and foams.
Abstract:
The invention provides a composition comprising the following: at least one olefin-based polymer, at least one halogenated ethylene-based polymer, or at least one elastomer rubber; at least one thermoplastic polyurethane; and at least one polydiene- or polydiol-based polyurethane. These compositions are well-suited for promoting the adhesion between polar (for example, polyester, polycarbonate and polylactic acid) and non-polar materials and for the manufacture of, among other things, films, fibers, sheets and tie layers, tubes, adhesives, dispersions, protective apparel, footwear, coatings, laminates and foams.
Abstract:
In one aspect the invention provides a melt process for preparing a functional ized olefin multibiock interpohmer. said process comprising grafting onto the backbone of the olefin multibiock inferpohmer at least one compound comprising at least one "amine-reactive" group to form a grafted olefin multibiock interpolymer. and reacting a primary-secondary diamine or an alkanolamine with the grafted olefin multibiock interpolymer, without the isolation of the grafted olefin multibiock interpolymer.
Abstract:
The invention provides a composition comprising at least one olefin multi-block interpolymer; at least one functionalized olefin-based polymer; and optionally at least one thermoplastic polyurethane. The invention also provides for articles prepared from the inventive compositions and for methods for making the same.
Abstract:
In one aspect the invention provides a melt process for preparing a functional ized olefin multibiock interpohmer. said process comprising grafting onto the backbone of the olefin multibiock inferpohmer at least one compound comprising at least one "amine-reactive" group to form a grafted olefin multibiock interpolymer. and reacting a primary-secondary diamine or an alkanolamine with the grafted olefin multibiock interpolymer, without the isolation of the grafted olefin multibiock interpolymer.
Abstract:
Polymer blends that exhibit good impact resistance comprise a crystalline polypropylene matrix and a partly crystalline copolymer impact modifier with a molecular weight lower than that of the matrix polymer. The matrix polymer can comprise any crystalline propylene homo- or copolymer. The impact modifying copolymers are characterized as comprising at least about 60 weight percent (wt.%) of units derived from propylene and, in certain embodiments, as having at least one, preferably two or more, of the following properties: (i) 13 C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content of the copolymer is at least about 3 wt.%, (iii) a skewness index, S ix , greater than about -1.20, (iv) a DSC curve with a T me that remains essentially the same and a T max that decreases as the amount of comonomer in the copolymer is increased, and (v) an X-ray diffraction pattern that reports more gamma-form crystals than a comparable copolymer prepared with a Ziegler-Natta (Z-N) catalyst.
Abstract:
A thermoplastic, hydrogenated vinyl aromatic/conjugated diene block polymer composition, especially a hydrogenated styrene/butadiene triblock composition, functions well as a LED encapsulating material in that it provides one or more of optical clarity, thermal stability, ultraviolet light resistance, melt-processability and injection-moldability. The resulting LED resists deformation after setting or hardening under typical solder reflow conditions.
Abstract:
The invention provides a composition comprising at least the following: an olefin multi-block interpolymer, a functionalized olefin-based polymer, and a thermoplastic polyurethane. The invention also provides for articles prepared from the inventive compositions and for methods for making the same.