Showing papers on "Plastomer published in 1994"
TL;DR: In this article, the benefits obtained from the addition of small quantities of chlorinated polyolefins to paving grade asphalt binders were investigated, which resulted in significant improvements over conventional modifiers at both the high and low temperature extremes.
Abstract: SYNOPSIS The benefits obtained from the addition of small quantities of chlorinated polyolefins to paving grade asphalt binders were investigated. A chlorinated polyethylene plastomer, Tyrin 2552, and a chlorinated olefinic elastomer, Tyrin CM0730, were added to asphalt binders at 3 and 5 wt % and subsequently reactively processed to facilitate compatibilization. The mixtures were analyzed for rheological performance relating to fatigue and rutting as well as low-temperature fracture performance. The addition of small quantities of these polymers to the asphalt binders resulted in significant improvements over conventional modifiers at both the high and low temperature extremes. 0 1994 John Wiley & Sons, Inc.
52 citations
Patent•
16 Dec 1994
TL;DR: A thermoplastic polymer composition incorporating at least 50 wt % polypropylene, at least 20 wt% of an elastomer such as EP rubber and at least about 4 Wt % plastomer is used to produce large components such as bumpers and exterior trim fascia for automobiles as mentioned in this paper.
Abstract: A thermoplastic polymer composition incorporating at least about 50 wt % polypropylene, at least about 20 wt % of an elastomer such as EP rubber and at least about 4 wt % plastomer. The plastomer is preferably a single site catalyzed ethylene based copolymer having a density less than about 0.915. By adjusting the amount of the plastomer in the composition, considerable control is secured over post-mold shrinkage of components produced through injection molding operations utilizing the composition. The composition can be prepared as a reactor blend or a melt blend. The composition is particularly useful in producing large components such as bumpers and exterior trim fascia for automobiles.
37 citations
TL;DR: In this article, the surfaces of white fillers such as Kornica chalk, precipitated calcium carbonate and KOG Kaolin were modified with a variety of proadhesive compounds in different amounts.
Abstract: Investigation into possible modifications of surfaces of white fillers such as Kornica chalk, precipitated calcium carbonate and KOG Kaolin. The surfaces of these fillers were modified with a variety of proadhesive compounds in different amounts. Optimum proadhesive compound was determined for each kind of filler. The modified fillers were tested in rubber mixtures based on butadiene-styrene rubber and in polyurethanes.
32 citations
TL;DR: In this paper, the blown fabrication characteristics of a constrained ge ometry catalyst technology (CGCT) polymer to a conventional LLDPE polymer with the similar melt index and density are compared.
Abstract: The introduction of a new family of substantially linear poly olefin copolymers made using the Insite* technology process and marketed under the Affinity* Polyolefin Plastomer (POP) tradename offers polymers with different structure-fabrication-property relationships compared to conven tional linear low density polyethylene (LLDPE) polymers. The objective of this paper is to compare the blown fabrication characteristics of a constrained ge ometry catalyst technology (CGCT) polymer to a conventional LLDPE polymer with the similar melt index and density.
15 citations
Patent•
28 Sep 1994
TL;DR: An improved covered or coupled fabric particularly for coverings, tensile structures, trucks, inflatable products in general, air conveyance, water containment, including a support made of fabric which is spread with, or coupled to, a compact or non-compact elastomer or plastomer compound as discussed by the authors.
Abstract: An improved covered or coupled fabric particularly for coverings, tensile structures, trucks, inflatable products in general, air conveyance, water containment, including a support (10) made of fabric which is spread with, or coupled to, a compact or non-compact elastomer or plastomer compound (11,12); in one or more regions the support is parted by dividing the weft and/or warp threads into two independently-woven groups (10a,10b), forming tubular elements (13) for the insertion of straps or other flexible or rigid elements, or for inflation or filling with water.
12 citations
TL;DR: In this paper, two types of IPNs, namely full and semi, were prepared and characterized by measurements of tensile strength, elongation at break, modulus and toughness.
12 citations
TL;DR: In this paper, both full and semi-interpenetrating polymer networks (IPNs) of polybutadiene and poly(methyl methacrylate) were synthesized by sequential polymerization.
Abstract: Both full and semi-interpenetrating polymer networks (IPNs) of polybutadiene and poly(methyl methacrylate) were synthesized by sequential polymerization. The effect of compositional variation and the cross-linking agent of both elastomer and plastomer on the physical, mechanical, and morphological properties were investigated. Full-IPNs exhibited improved tensile strength, modulus, tear strength, gel content, and density, whereas the corresponding semi-IPNs exhibited better toughness and elongation at break. Phase morphology of full-IPNs were characterized by compact, tight network structures compared to those of semi-IPNs. © 1994 John Wiley & Sons, Inc.
8 citations
Patent•
14 Jan 1994
TL;DR: A method of manufacturing a biaxially oriented heatshrinkable food packaging film comprising a three component blend wherein the major constituents are a polyethylene, such as, VLDPE or LLDPE, or a mixture thereof, EVA, and an ethylene alpha-olefin plastomer copolymer of a density below about 0.90 g/cm3 as discussed by the authors.
Abstract: A method of manufacturing a biaxially oriented heat-shrinkable food packaging film comprising a three component blend wherein the major constituents are a polyethylene, such as, VLDPE or LLDPE or a mixture thereof, EVA, and an ethylene alpha-olefin plastomer copolymer of a density below about 0.90 g/cm3.
7 citations
Patent•
29 Mar 1994
TL;DR: In this article, a three-layer heat shrinkable food over-wrap is presented, which consists of an outer layer consisting of a mixture of a specific ethylene/α-olefin plastomer copolymer and VLDPE, and a core layer comprising a specific polyethylene/α -olefin copolymers.
Abstract: PURPOSE: To obtain a heat-shrinkable film useful for a food over-wrap wherein poultry or the like is put in a tray by biaxially stretching a film consisting of outer layers comprising a mixture of a specific ethylene/α-olefin plastomer copolymer and VLDPE and a core layer comprising a specific ethylene/α-olefin copolymer CONSTITUTION: A heat-shrinkable film comprises at least three layers and outer layers comprise a mixture of 20-35 wt% of ethylene/α-olefin plastomer copolymer with a density of 090 g/cm or less and 65-85 wt% of VLDPE with a density of 0914 g/cm or less and a core layer comprises an ethylene/α-olefin copolymer having an mp higher than that of either one of both outer layers The content of the plastomer copolymer in the outer layer mixture is pref 22-30 wt% and that of VLDPE therein is pref 70-78 wt% This three-layered film functions in a degree of a conventional five-layered film and the power of required in exhaustion airtight sealing is about half and a large shrinkage factor and small permanent strain % are brought about
5 citations
Patent•
15 Feb 1994
TL;DR: In this paper, a biaxially oriented shrinkable film suitable for use in the packing of food such as processed meat or the like is based on a three-component mixture of polyethylene substance selected from a group consisting of extremely low density polyethylenes (VLDPE), linear low-density polyethyleni(LLDPE) and a mixture of them, an ethylene/α-plastomer copolymer with a density of about 0.90 g/cm or less and an E-vinyl acetate copolymers.
Abstract: PURPOSE: To obtain the subject film excellent in shrinkage characteristics in its longitudinal and lateral directions by molding a three-component mixture of a polyethylene substance such as VLDPR, LLDPE or a mixture of them, an ethylene/vinyl acetate copolymer and an ethylene/α-plastomer copolymer. CONSTITUTION: A biaxially oriented shrinkable film suitable for use in the packing of food such as processed meat or the like is based on a three- component mixture of (1) a polyethylene substance selected from a group consisting of extremely low density polyethylene(VLDPE), linear low density polyethylene(LLDPE) and a mixture of them, (2) an ethylene/α-plastomer copolymer with a density of about 0.90 g/cm or less and (3) an ethylene/vinyl acetate copolymer. In the composition thereof, about 35-60 wt.% polyethylene and about 40-20 wt.% of the ethylene/vinyl acetate copolymer are contained. The ethylene/α-olefin plastomer copolymer is contained in a ratio of about 13-17 wt.%.
4 citations