(KR20170029230) The present invention relates to a method for producing a non-crosslinked polypropylene foamed sheet having high melt tension which, to eliminate foaming difficulties due to the low viscosity and low melt tension of polypropylene during melting, utilizes a resin having high melt tension, and through a sheet having uniform and fine cells, increases the foaming ratio by a factor of 1.1-5. According to the present invention, the method for producing a non-crosslinked polypropylene foamed sheet having high melt tension, and a sheet produced thereby show excellent impact properties, excellent moisture barrier properties, heat resistance, moldability, and secondary processability at low temperature, show a low degree of container deformation at high temperature, and provide excellent productivity and cost-effectiveness. Also, the present invention may replace EPS, is environmentally-friendly, and may be used to produce microwavable containers, regular food containers, cup noodle containers which are exposed to high temperature and the like. COPYRIGHT KIPO 2017
(KR20170000307) The present invention relates to an illite-containing high function polypropylene filament and a product. More specifically, a master batch chip containing illite is mixed and dissolved with a general polymer resin chip to be produced into a chip or injection material having a desired shape. When the illite-containing high function polypropylene filament is used as a chip or an injection material, a master batch chip produced by using illite powder having a particle size of 1,000-2,000 mesh is used, and 4-20 wt% of the master batch chip and 80-96 wt% of a general polymer resin chip are mixed, so an injection material or a filament having an overall illite content of 1-10 wt% is produced to be used as a high function environmentally-friendly fiber material. When the molded material is spun in a filament fiber shape, by considering the blocking of a spinning nozzle or the tractive properties of a yarn, 4-20 wt% of a master batch chip containing illite having a particle size of 3,000 mesh which is higher than the same is mixed with 80-98 wt% of a general polymer resin chip. Accordingly, a material having an overall illite content of 0.5-5 wt% is obtained and knitted, so an illite-containing high function polypropylene filament capable of being utilized as a high function environmentally-friendly clothing material or a packing material is obtained. COPYRIGHT KIPO 2017
REICHELT NORBERT;DE MINK PAUL;GAHLEITNER MARKUS;KLIMKE KATJA;GLOGER DIETRICH
(TW201718668) 本發明關於長鏈分支聚丙烯組成物(b-PPC)，其包含至少一種長鏈分支丙烯均聚物或丙烯共聚物(b-PP)以及至少一種直鏈丙烯均聚物或丙烯共聚物(l-PP)。 該長鏈分支聚丙烯組成物(b-PPC)適合發泡體應用。 The invention relates to long-chain branched polypropylene composition (b-PPC) comprising at least one long-chain branched propylene homopolymer or copolymer (b-PP) and at least one linear propylene homopolymer or copolymer (l-PP). The long-chain branched polypropylene composition (b-PPC) being suitable for foam application.
(JP2016056316) PROBLEM TO BE SOLVED: To provide a method for producing a PP molded body excellent in transparency, mechanical properties and physical properties, and a PP molded body obtained by the method.SOLUTION: The polypropylene molded body is obtained by executing solid phase compression molding at 25 to 170°C to at least one direction at 1.2 times or more to a pre-molded body made of a resin composition. The resin composition is blended with a block copolymer hydride in 0.5 to 50 pts.wt. obtained by hydriding 90% or more of all the unsaturated bonds in a block copolymer, to 100 pts.wt. of polypropylene (PP), composed of at least two polymer blocks [A] essentially consisting of the repeating unit derived from an aromatic vinyl compound and at least one polymer block [B] essentially consisting of the repeating unit derived from a linear conjugated diene compound, in which, provided that the weight fraction occupied in the whole block copolymer of all the polymer blocks [A] is defined as wA and the weight fraction occupied in the whole block copolymer of all the polymer blocks [B] is defined as wB, the ratio between wA and wB (wA:w) is (30:70) to (60:40).SELECTED DRAWING: None
(KR20130036114) PURPOSE: A manufacturing method of a CNT/PP composite material is provided to improve mechanical properties of the composite material, and to obtain the excellent CNT/PP composite material with excellent dispersity. CONSTITUTION: A manufacturing method of a CNT/PP composite material comprises a step of manufacturing a PP powder/xylene mixture; a step of stirring the mixture at 100-150 deg. C for 1-3 hours; a step of manufacturing a CNT/xylene dispersion solution by mixing a carbon nanotubes(CNT) and xylene; a step of injecting swollen the CNT/xylene dispersed solution into the swollen PP powder/xylene mixture; a step of ultra-wave dispersing the result; and a step of removing solvent, deaerating the solvent, and manufacturing final CNT/PP powder.
(WO201671396) The present invention relates to a polypropylene composition comprising a branched polypropylene (b-PP) having high melt strength (HMS). Furthermore, the present invention also relates to a method for providing the corresponding polypropylene having composition comprising the branched polypropylene (b-PP)and to a foam with the polypropylene composition comprising the branched polypropylene (b-PP). The branched polypropylene (b-PP)is based on a random copolymer with a small amount of ethylene.