# US 10,308,800 B2 · Processing aid > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,308,800 B2 - Document ID: US10308800B2 - Status: Granted - Kind: B2 - Application number: 15/503,102 - Filed: 2015-08-07 - Published: 2017-08-10 - Granted: 2019-06-04 - Earliest claimed: 2014-08-21 - Assignees: Daikin Industries, Ltd. - Applicants: Daikin Industries, Ltd. - Inventors: Ken Okanishi; Yoshichika Komiya; Takafumi Yamato; Tsuyoshi Miyamori - Web page: https://patentgrep.com/patent/US10308800B2 ## CPC - C08L 27/12: containing fluorine atoms - C08F 259/08: on to polymers containing fluorine - C08F 293/00: Macromolecular compounds obtained by polymerisation on to a macromolecule having groups capable of inducing the formation of new polymer chains bound exclusively at one or both ends of the starting macromolecule (on to polymers modified by introduction of unsaturated end groups C08F290/02) - C08J 3/22: using masterbatch techniques - C08K 3/26: Carbonates; Bicarbonates - C08K 3/34: Silicon-containing compounds - C08L 23/02: not modified by chemical after-treatment - C08L 23/0815: {with aliphatic 1-olefins containing one carbon-to-carbon double bond} - C08L 71/02: Polyalkylene oxides - C08L 2205/06: having improved processability or containing aids for moulding methods - C08L 2310/00: Masterbatches - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS - C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29) - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) ## Abstract The invention provides a processing aid enabling short-time disappearance of melt fracture occurred in extrusion-molding a melt-fabricable resin at a high shear rate, a great reduction in extrusion pressure, and production of molded articles with good appearance. The processing aid contains a polymer containing a fluorine-containing elastomeric polymer segment and a fluorine-containing non-elastomeric polymer segment. ## Claims ### Claim 1 A processing aid for extrusion-molding a polyolefin resin, comprising a polymer containing a fluorine-containing elastomeric polymer segment and a fluorine-containing non-elastomeric polymer segment, and 1 to 99 mass % of a surfactant, wherein the surfactant is a poly(oxyalkylene). ### Claim 2 (depends on 1) The processing aid according to claim 1, wherein the fluorine-containing elastomeric polymer segment is a segment derived from at least one fluorine-containing elastomeric polymer selected from the group consisting of: vinylidene fluoride/hexafluoropropylene copolymers, vinylidene fluoride/tetrafluoroethylene/hexafluoropropylene copolymers, vinylidene fluoride/perfluoro(alkyl vinyl ether) copolymers, vinylidene fluoride/tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymers, vinylidene fluoride/hexafluoropropylene/perfluoro(alkyl vinyl ether) copolymers, vinylidene fluoride/chlorotrifluoroethylene copolymers, tetrafluoroethylene/propylene copolymers, and tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymers. ### Claim 3 (depends on 1) The processing aid according to claim 1, wherein the fluorine-containing non-elastomeric polymer segment is a segment derived from at least one fluorine-containing non-elastomeric polymer selected from the group consisting of: tetrafluoroethylene/hexafluoropropylene copolymers, tetrafluoroethylene/ethylene copolymers, ethylene/tetrafluoroethylene/monomer (a) copolymers, vinylidene fluoride/tetrafluoroethylene copolymers, polytetrafluoroethylene, polychlorotrifluoroethylene, polyvinylidene fluoride, vinylidene fluoride/hexafluoropropylene copolymers, vinylidene fluoride/chlorotrifluoroethylene copolymers, polyvinyl fluoride, chlorotrifluoroethylene/tetrafluoroethylene copolymers, chlorotrifluoroethylene/ethylene copolymers, and tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymers. ### Claim 4 (depends on 1) The processing aid according to claim 1, wherein the polymer is a block polymer or a graft polymer. ### Claim 5 (depends on 1) The processing aid according to claim 1, wherein the surfactant is polyethylene glycol. ### Claim 6 (depends on 1) The processing aid according to claim 1, further comprising 1 to 30 parts by mass of an anti-reagglomerating agent relative to 100 parts by mass of the polymer. ### Claim 7 (depends on 6) The processing aid according to claim 6, wherein the anti-reagglomerating agent is at least one selected from the group consisting of talc, silica, and calcium carbonate. ### Claim 8 (depends on 1) A processing aid masterbatch, comprising the processing aid according to claim 1, and a polyolefin resin, the polymer being contained in an amount more than 0.1 mass % but not more than 20 mass % of the sum of masses of the polymer and the polyolefin resin. ### Claim 9 (depends on 1) A molding composition comprising the processing aid according to claim 1, and a polyolefin resin, the polymer being contained in an amount of 0.0001 to 10 mass % of the sum of masses of the processing aid and the polyolefin resin. ### Claim 10 (depends on 9) A molded article obtainable by molding the molding composition according to claim 9.