# US 2016/0355679 A1 · Polyamide molding compound and use thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0355679 A1 - Document ID: US20160355679A1 - Status: Published application - Kind: A1 - Application number: 15/032,978 - Filed: 2014-12-16 - Published: 2016-12-08 - Earliest claimed: 2013-12-20 - Assignees: Ems-Patent AG - Applicants: Ems-Patent AG - Inventors: Etienne AEPLI - Web page: https://patentgrep.com/patent/US20160355679A1 ## CPC - C08L 77/06: Polyamides derived from polyamines and polycarboxylic acids (C08L77/10 takes precedence) - C08K 3/24: Acids; Salts thereof {(C08K3/16 takes precedence)} - C08K 3/32: Phosphorus-containing compounds - C08K 7/14: Glass - C08K 2003/328: {Phosphates of heavy metals} - C08L 71/126: {modified by chemical after-treatment} - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) ## Abstract Thermoplastic, flameproof plastic molding materials are described having improved mechanical properties and improved surface properties, in particular for use in LDS. The thermoplastic molding compound consists of: (A) 30-84.9% by weight of a thermoplastic polymer mixture, comprising (A1) 50-90% by weight of a partially aromatic, partially crystalline polyamide or a mixture of such polyamides; (A2) 5-50% by weight of a polyphenylether or a mixture of such polyphenylethers; (A3) 0-40% by weight of a partially crystalline, aliphatic polyamide, wherein (A1)-(A3) add up to 100% by weight of component (A); (B) 15-60% by weight of glass fibers; (C) 0.1%-10% by weight of a LDS additive or a mixture of LDS additives, wherein at least one LDS additive is composed entirely or partially of inorganic compounds of copper and/or tin; (D) 0-40% by weight of a particulate filler different from (C); (F) 0-5% by weight of other additional additives; wherein the sum of (A)-(E) amounts to 100% by weight. ## Claims ### Claim 1 A thermoplastic molding composition consisting of: (A) 30-84.9 wt % of a thermoplastic polymer mixture consisting of (A1) 50-90 wt % of a semiaromatic, semicrystalline polyamide or of a mixture of such polyamides, (A2) 5-50 wt % of a polyphenylene ether or of a mixture of such polyphenylene ethers, (A3) 0-40 wt % of a semicrystalline, aliphatic polyamide or of a mixture of such polyamides, (A1)-(A3) adding up to 100 wt % of component (A), with the proviso that the sum of (A2) and (A3) accounts for 10 to 50 wt % of component (A); (B) 15-60 wt % of glass fibers; (C) 0.1-10 wt % of LDS additive or of a mixture of LDS additives, at least one LDS additive being composed wholly or partly of inorganic compounds of copper and/or of tin; (D) 0-40 wt % of particulate filler other than (C); (E) 0-5 wt % of further, different additives; the sum of (A)-(E) making up 100 wt %. ### Claim 2 (depends on 1) The molding composition as claimed in claim 1, wherein at least one of the components (A2) or (A3), are grafted. ### Claim 3 (depends on 1) The molding composition as claimed in claim 1, wherein the ratio of (A2) to (A3) is in the range from 4:1 to 1:4. ### Claim 4 (depends on 1) The molding composition as claimed claim 1, wherein the semicrystalline, aliphatic polymer of the components (A3) is selected from the group consisting of: polyamide 6, polyamide 10, polyamide 11, polyamide 12, polyamide 1212, polyamide 1012, polyamide 1210, polyamide 46, polyamide 66, polyamide 612, polyamide 126, polyamide 106, polyamide 610, polyamide 1010, polyamide 614, polyamide 618, polyamide 1014, polyamide 1018, polyamide 1214, polyamide 1218 and also copolyamides or mixtures thereof; and/or wherein the fraction of component (A3) within the 100 wt % of component (A) is in the range of 5-40 wt %. ### Claim 5 (depends on 1) The molding composition as claimed in claim 1, wherein the fraction of component (A) is in the range of 55-90 wt % or 37-80.5 wt %, and/or wherein the fraction of component (B) is in the range of 18-55 wt %, based in on the sum of (A)-(E). ### Claim 6 (depends on 1) The molding composition as claimed in claim 1, wherein the polyphenylene ether of component (A2) is selected from the group consisting of the following: poly(2,6-diethyl-1,4-phenylene) ether, poly(2-methyl-6-ethyl-1,4-phenylene) ether, poly(2-methyl-6-propyl-1,4-phenylene) ether, poly(2,6-dipropyl-1,4-phenylene) ether, poly(2-ethyl-6-propyl-1,4-phenylene) ether or copolymers or mixtures thereof and/or wherein the fraction of component (A2) within the 100 wt % of component (A) is in the range of 10-45 wt % or 10-46 wt %. ### Claim 7 (depends on 1) The molding composition as claimed in claim 1, wherein at least one of the polyphenylene ethers of component (A2) is grafted with maleic anhydride between 0.05 to 5%. ### Claim 8 (depends on 1) The molding composition as claimed in claim 1, wherein component (B) is a glass fiber of E glass with a circular cross section. ### Claim 9 (depends on 1) The molding composition as claimed in claim 1, wherein component (B) is a glass fiber or a mixture of glass fibers of E glass with a non-circular cross section. ### Claim 10 (depends on 1) The molding composition as claimed in claim 1, wherein component (B) is a high-strength glass fiber or a mixture of high-strength glass fibers with a circular or non-circular cross section and with a glass composition based essentially on the components silicon dioxide, aluminum oxide and magnesium oxide, with the fraction of magnesium oxide (MgO) being 5-15 wt % and the fraction of calcium oxide (CaO) being 0-10 wt %. ### Claim 11 (depends on 1) The molding composition as claimed in claim 1, wherein the semiaromatic, semicrystalline polyamide (A1) is formed from one or from a mixture of polyamides formed from: (A1_a): 50-100 mol % of at least one of aromatic terephthalic acid and/or naphthalenedicarboxylic acid, based on the total amount of dicarboxylic acids present, 0 -50 mol % of an aliphatic dicarboxylic acid, and/or of a cycloaliphatic dicarboxylic acid and/or isophthalic acid; (A1_b): 80-100 mol % of at least one aliphatic diamine having 4-18 carbon atoms, based on the total amount of diamines present, 0-20 mol % of cycloaliphatic diamines, and/or araliphatic diamines, the percentage molar amount of dicarboxylic acids making 100% and the percentage molar amount of diamines making 100% in the polyamide (A1), and optionally from: (A1_c): aminocarboxylic acids and/or lactams. ### Claim 12 (depends on 1) The molding composition as claimed in claim 1, wherein the polyamide (A1) is selected from the group consisting of the following: PA 4T/41, PA 4T/61, PA 5T/5I, PA 6T/6, PA 6T/61, PA 6T/6I/6, PA 6T/66, 6T/610, 6T/612, PA 6T/10T, PA 6T/10I, PA 9T, PA 10T, PA 12T, PA 10T/10I, PA10T/106, PA10T/610, PA10T/612, PA10T/66, PA10T/6, PA10T/1010, PA10T/1012, PA10T/12, PA10T/11, PA 6T/9T, PA 6T/12T, PA 6T/10T/61, PA 6T/6I/6, PA 6T/61/12 and also mixtures thereof. ### Claim 13 (depends on 1) The molding composition as claimed in claim 1, wherein the fraction of component (C) is in the range of 0.5-8 wt %, based in each case on the sum of (A)-(E). ### Claim 14 (depends on 1) The molding composition as claimed in claim 1, wherein component (C) comprises at least one LDS additive based on copper and/or tin or is formed entirely by an LDS additive based on copper and/or tin, selected from the following group: metal oxide, metal phosphate, including basic metal phosphate and/or metal hydroxide phosphate. ### Claim 15 (depends on 1) The molding composition as claimed in claim 1, wherein component (C) is an LDS additive selected from the group consisting of the following: copper chromium oxide, copper oxide, copper hydroxide phosphate, tin hydroxide phosphate, tin phosphate, copper phosphate, basic copper phosphates and tin phosphates, or mixtures thereof. ### Claim 16 (depends on 1) The molding composition as claimed in claim 1, wherein the fraction of component (D) is in the range of 0-25 wt % based in each case on the sum of (A)-(E). ### Claim 17 (depends on 1) The molding composition as claimed in claim 1, wherein component (D) is an inorganic white pigment, or mixture of white pigments. ### Claim 18 (depends on 1) A process for producing a molding composition as claimed in claim 1, wherein in a first step component (A2) and/or component (A3), are grafted, and subsequently in a second step this grafted component or these grafted components are combined and mixed with the remaining components (A1), (B) and (C) and also optionally (D) and/or (E). ### Claim 19 (depends on 1) A component, based on a molding composition according to claim 1. ### Claim 20 (depends on 1) The molding composition as claimed in claim 1, wherein a mixture of (A2) and (A3), are grafted, before being combined with the remaining components (A1), (B) and (C) and also optionally (D) and/or (E). ### Claim 21 (depends on 1) The molding composition as claimed in claim 1, wherein (A2) and/or (A3) are grafted with unsaturated anhydride, including maleic anhydride, itaconic anhydride, and/or with acrylic acid, methacrylic acid, maleic acid, monobutyl maleate, fumaric acid, aconitic acid or a mixture thereof. ### Claim 22 (depends on 21) The molding composition as claimed in claim 21, wherein, (A2) and/or (A3) are grafted in a degree of grafting in the range between 0.05 to 5 wt %, based on the weight of component (A2), of component (A3), or, in the case of the mixture, on the sum of (A2) and (A3). ### Claim 23 (depends on 21) The molding composition as claimed in claim 21, wherein, (A2) and/or (A3) are grafted in a degree of grafting in the range between 0.2 to 1.5 wt %, based the weight of component (A2), of component (A3), or, in the case of the mixture, on the sum of (A2) and (A3). ### Claim 24 (depends on 1) The molding composition as claimed in claim 1, wherein the ratio of (A1) to (A2) or of (A1) to the sum of (A2) and (A3) is in the range from 4:1 to 1:2. ### Claim 25 (depends on 1) The molding composition as claimed in claim 1, wherein the fraction of component (A3) within the 100 wt % of component (A) is in the range of 20-30 wt %. ### Claim 26 (depends on 1) The molding composition as claimed in claim 1, wherein the fraction of component (A) is in the range of 49-79 wt %, and/or wherein the fraction of component (B) is in the range of 25-40 wt %, based on the sum of (A)-(E). ### Claim 27 (depends on 1) The molding composition as claimed in claim 1, wherein the fraction of component (A2) within the 100 wt % of component (A) is in the range of 20-40 wt %. ### Claim 28 (depends on 1) The molding composition as claimed in claim 1, wherein at least one of the polyphenylene ethers of component (A2) is grafted with maleic anhydride between 0.2 to 1.5%. ### Claim 29 (depends on 1) The molding composition as claimed in claim 1, wherein component (B) is a glass fiber or a mixture of glass fibers of E glass with a non-circular cross section and with an axial ratio of the principal cross sectional axis to the secondary cross sectional axis of at least 2.5, or in the range of 2.5-6. ### Claim 30 (depends on 1) The molding composition as claimed in claim 1, wherein the semiaromatic, semicrystalline polyamide (A1) is formed from one or from a mixture of polyamides formed from: (A1_a): 50-100 mol % of aromatic terephthalic acid and/or naphthalenedicarboxylic acid, based on the total amount of dicarboxylic acids present, 0-50 mol % of an aliphatic dicarboxylic acid, having 6 to 12 carbon atoms, and/or of a cycloaliphatic dicarboxylic acid having 8 to 20 carbon atoms, and/or isophthalic acid; (A1_b): 80-100 mol % of at least one aliphatic diamine having 4-18 carbon atoms, having 6 to 12 carbon atoms, based on the total amount of diamines present, 0-20 mol % of cycloaliphatic diamines, having 6 to 20 carbon atoms, and/or araliphatic diamines, the percentage molar amount of dicarboxylic acids making 100% and the percentage molar amount of diamines making 100% in the polyamide (A1), and optionally from: (A1_c): aminocarboxylic acids and/or lactams having 6 to 12 carbon atoms. ### Claim 31 (depends on 1) The molding composition as claimed in claim 1, wherein the fraction of component (C) is in the range of 1-6 wt %, based on the sum of (A)-(E). ### Claim 32 (depends on 1) The molding composition as claimed in claim 1, wherein component (C) comprises at least one LDS additive based on copper and/or tin or is formed entirely by an LDS additive based on copper and/or tin, selected from the following group: metal oxide, metal phosphate, including basic metal phosphate and/or metal hydroxide phosphate. ### Claim 33 (depends on 1) The molding composition as claimed in claim 1, wherein component (C) comprises at least one LDS additive or is formed entirely by an LDS additive selected from the following group: tin oxide; metal-doped or metal oxide-doped tin oxide; antimony-doped tin oxide; metal oxide-coated mica; mica coated with antimony-doped tin oxide; mixture of tin oxide and antimony oxide and optionally further metal oxides; spinels; copper chromium oxide; copper oxide; copper hydroxide; copper hydroxide phosphate; copper phosphate; basic copper phosphates; copper tin phosphate; basic copper tin phosphate; tin phosphate; basic tin phosphate; antimony-doped tin oxide, including those in combination with mica; or mixtures and combinations thereof. ### Claim 34 (depends on 1) The molding composition as claimed in claim 1, wherein the fraction of component (D) is in the range of 2-15 wt %, based on the sum of (A)-(E). ### Claim 35 (depends on 1) The molding composition as claimed in claim 1, wherein component (D) is an inorganic white pigment, selected from the group of barium sulfate, zinc oxide, zinc sulfide, lithopones and titanium dioxide, in the rutile or the anatase modification, or mixtures of such white pigments. ### Claim 36 (depends on 1) A process for producing a molding composition as claimed in claim 1, wherein in a first step component (A2) or component (A3), or a mixture of components (A2) and (A3), are grafted, with unsaturated anhydride, including maleic anhydride, itaconic anhydride, and/or with acrylic acid, methacrylic acid, maleic acid, monobutyl maleate, fumaric acid, aconitic acid or a mixture thereof, in a degree of grafting in the range between 0.05 to 5 wt %, based on the weight of component (A2), of component (A3), or, in the case of the mixture, on the sum of (A2) and (A3), and subsequently in a second step this grafted component or these grafted components are combined and mixed with the remaining components (A1), (B) and (C) and also optionally (D) and/or (E). ### Claim 37 (depends on 1) A process for producing a molding composition as claimed in claim 1, wherein in a first step component (A2) or component (A3), or a mixture of components (A2) and (A3), are grafted, with at least one of maleic anhydride, itaconic anhydride, and/or with acrylic acid, methacrylic acid, maleic acid, monobutyl maleate, fumaric acid, aconitic acid or a mixture thereof, in a degree of grafting in the range between 0.2 to 1.5 wt %, based on the weight of component (A2), of component (A3), or, in the case of the mixture, on the sum of (A2) and (A3), and subsequently in a second step this grafted component or these grafted components are combined and mixed with the remaining components (A1), (B) and (C) and also optionally (D) and/or (E). ### Claim 38 (depends on 1) A component with electrical conductor tracks, based on a molding composition according to claim 1. ### Claim 39 (depends on 38) A component according to claim 38, in the form of a casing or casing part for portable electronic devices, including PDAs, mobile telephones, telecommunications devices, casings or casing parts for personal computers, notebook computers, medical devices, including hearing devices, sensor technology, or RFID transponders or parts for the automotive sector, including airbag module, multi-function steering wheel.