Patent classifications
C08L2207/066
Odor-adsorbing molded article resin composition, odor-adsorbing molded article, and packaging material
An object of the present invention is to provide a resin composition for an odor-adsorbing molded article that is excellent in manufacturability, eliminates odor by exerting a high adsorbing effect on odorous organic matter originally contained in packaging materials and odor generated by the decomposition, etc. of resins constituting packages during disinfection/sterilization treatment such as UV irradiation, hot packing, boiling, γ ray irradiation, or EB irradiation, is less likely to desorb the odor once adsorbed and capable of efficiently adsorbing odor and therefore exerts a high adsorbing effect over a long period without reducing the ability to adsorb odor, and is excellent in resistance to change in taste and odor of contents, and an odor-adsorbing molded article prepared from the resin composition for an odor-adsorbing molded article. The present invention provides a resin composition for an odor-adsorbing molded article comprising at least thermoplastic resin A and an odor adsorbent material, wherein the odor adsorbent material comprises hydrophobic zeolite having a SiO.sub.2/Al.sub.2O.sub.3 molar ratio of 30/1 to 8000/1, and a melt flow rate of the thermoplastic resin A is 5 g/min or more and 100 g/min or less, and an odor-adsorbing molded article prepared from the resin composition for an odor-adsorbing molded article.
Dual component LLDPE copolymers with improved impact and tear resistance, and methods of their preparation
Disclosed are ethylene polymer compositions containing a homogeneously-branched first ethylene polymer component and 15-35 wt. % of a homogeneously-branched second ethylene polymer component of higher density than the first ethylene polymer component. The ethylene polymer composition can be characterized by a density from 0.912 to 0.925 g/cm.sup.3, a ratio of Mw/Mn from 2 to 5, a melt index less than 2 g/10 min, and a CY-a parameter at 190° C. from 0.35 to 0.7. These polymer compositions have the excellent dart impact strength and optical properties of a metallocene-catalyzed LLDPE, but with improved machine direction tear resistance, and can be used in blown film and other end-use applications. Further, methods for improving film Elmendorf tear strength also are described.
Polypropylene-Polyethylene Composition with Improved Toughness
It is provided a polymer composition including at least the following components A) 70 to 97 wt.-% based on the overall weight of the polymer composition of a polymer blend, including a1) 50 to 95 wt.-% of polypropylene; a2) 5 to 50 wt.-% of polyethylene; B) 3 to 30 wt.-% based on the overall weight of the polymer composition of a copolymer of propylene and 1-hexene, including b1) 30 to 70 wt.-% of a first random copolymer of propylene and 1-hexene; and b2) 30 to 70 wt.-% of a second random copolymer of propylene and 1-hexene having a higher 1-hexene content than the first random propylene copolymer b1); with the provisos that the weight proportions of components a1) and a2) add up to 100 wt.-%; the weight proportions of components b1) and b2) add up to 100 wt.-%; component A) has a MFR.sub.2 (230° C., 2.16 kg) determined according to ISO 1133 in the range from 1.0 to 50.0 g/10 min; component B) has a 1-hexene content in the range of 2.0 to 8.0 wt.-% based on the overall weight of component B); and the polymer composition is free from plastomers being an elastomeric copolymer of ethylene and 1-octene having a density in the range from 0.860 to 0.930 g/cm.sup.3.
HALOGEN FREE FLAME RETARDANT POLYMERIC COMPOSITIONS
A polymeric composition including in weight percent of the polymeric composition: (a) 10 wt % to 30 wt % of a polyolefin elastomer; (b) 1 wt % to 20 wt % of a polypropylene-based polymer; (c) greater than 1 wt % to 20 wt % of a crystalline block composite; (d) 1 wt % to 10 wt % of a maleated polyolefin elastomer; and (e) 40 wt % to 80 wt % of a halogen free flame-retardant filler.
Polymer blends with improved processability for TPO roofing membranes and methods for making same
A polymer blend includes 35 to 50 wt % of at least one propylene-based elastomer, 25 to 50 wt % of at least one impact copolymer; and 15 to 25 wt % of at least one low density polyethylene component. The propylene-based elastomer has a heat of fusion less than about 80 J/g, greater than 50 wt % propylene and from about 3 wt % to about 25 wt % units derived from one or more C2 or C4-C12 α-olefins, based on a total weight of the propylene-based elastomer. The low density polyethylene has a density of about 0.90 g/cm.sup.3 to about 0.94 g/cm.sup.3. The polymer blend is useful for making a roofing membrane.
Cross-linkable polyolefin composition comprising a first and a second olefin polymer
The present invention relates to a cross-linkable polyolefin composition comprising a first olefin polymer (A) comprising a first comonomer comprising epoxy groups, and a second olefin polymer (B) comprising a second comonomer comprising carboxylic acid groups and/or precursor thereof.
Thermoplastic composition
An extrusion composition containing at least one resin selected from the group consisting of polypropylene homopolymers, polypropylene random copolymers, and polypropylene impact copolymers. The extrusion composition also contains at least one benzoic acid salt-based nucleating agent provided in the composition at a use level of between about 0.01 and 0.15 parts by weight, in relation to 100 parts by weight of the resin and at least one co-additive selected from the group consisting of poly(ethylene glycol) and copolymers containing segments of ethylene oxide, wherein the co-additive has a number average molecular weight of about 300 or more, and wherein the use level of the co-additive is about 0.005 parts by weight or more, in relation to 100 parts by weight of the resin.
PHOTOVOLTAIC MODULE WITH INCREASED RESISTANCE AGAINST POTENTIAL INDUCED DEGRADATION
The present invention relates to a photovoltaic module comprising a protective front layer element, an encapsulation layer element, a photovoltaic cell element and a protective back layer element, whereby at least one of theprotective elements comprises glass; wherein the encapsulation layer element comprises a polymer composition (I) comprising at least the following components: (A) 90 to 99.8 wt.-% based on the overall weight of the polymer composition (I) of a polymer selected from a polyolefin elastomer or a polymer of ethylene (a) selected from (a1) a copolymer of ethylene which bears functional groups containing units; (a2) a copolymerof ethylene comprising one or more polar comonomer unit(s) selected from (C1-C6)-alkyl acrylate or (C1-C6)-alkyl (C1-C6)-alkyl acrylate comonomer units, and optionally bears functional groups containing units different from said polar comonomer unit(s); (a3) a copolymer of ethylene comprising one or more alpha-olefin comonomer unit(s); and optionally bears functional groups containing units different fromsaid polar comonomer unit(s) of polymer (a2); or mixtures thereof; and (b) silane group(s) containing units; (B) 0.2 to 10 wt.-% based on the overall weight of the polymer composition (I) of a copolymer of ethylene, which bears functional group containing units originating from at least one unsaturated carboxylic acid and/or its anhydrides, metal salts, esters, amides or imidesand mixtures thereof, whereby component (B) is different from component (A) Furthermore, the present invention refers to the use of an encapsulation layer element comprising polymer composition (I) according to the invention for increasing the Pmax determined after 96 h according to IEC 60904, by applying the foil method with a temperature of 85° C. and relative humidity of 60% and a potential differenceof 1500 V, of a photovoltaic module comprising besides the encapsulation layer element a protective front layer element, a photovoltaic cell element and a protective back element, whereby at least one of the protective elements comprises glass.
Cellulose-fiber-dispersing polyolefin resin composite material
A cellulose-fiber-dispersing polyolefin resin composite material, containing a polyolefin resin and a cellulose fiber dispersed in the polyolefin resin, in which the composite material contains the cellulose fiber of 3 mass % or more and less than 70 mass %, and when the composite material is subjected to the abrasion test according to ISO 6722 under the following test conditions, the amount of abrasion after 5,000 reciprocations satisfies the [Formula 1]: (Amount of abrasion [mm] of the cellulose-fiber-dispersing polyolefin resin composite material)<−0.003×(Cellulose effective mass ratio of the cellulose-fiber-dispersing polyolefin resin composite material)+0.3, [Test Conditions for Abrasion Test] Load: 1.7 kg, Needle diameter: φ0.45 mm, Stroke length: 10 mm, Period: 60 reciprocations/min, Test piece: length 38 mm×width 6 mm×thickness 1 mm, Temperature: 23° C.
Stabilized polyolefin compositions comprising benzofuranones and hindered amine light stabilizers
Polyolefin compositions comprising i) a polyolefin, ii) one or more phosphorus—containing benzofuranone compounds and iii) one or more hindered amine light stabilizers are provided excellent protection against discoloration and enhanced thermal stability during melt processing as exhibited by improved retention of molecular weight and maintenance of polymer molecular architecture.