# US 2014/0194561 A1 · Thermoplastic compositions for laser direct structuring and methods for the manufacture 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 2014/0194561 A1 - Document ID: US20140194561A1 - Status: Published application - Kind: A1 - Application number: 13/735,748 - Filed: 2013-01-07 - Published: 2014-07-10 - Earliest claimed: 2013-01-07 - Assignees: Sabic Innovative Plastics IP B.V. - Applicants: Sabic Innovative Plastics IP B.V. - Inventors: Anirban Ganguly; Susanta Mitra; Wu Tong; Liu Shuiping - Web page: https://patentgrep.com/patent/US20140194561A1 ## CPC - C08L 83/10: Block- or graft-copolymers containing polysiloxane sequences (obtained by polymerising a compound having a carbon-to-carbon double bond on to a polysiloxane C08L51/08, C08L53/00) - C08K 3/22: of metals - C08K 5/5415: containing at least one Si—O bond - C08L 69/00: Compositions of polycarbonates; Compositions of derivatives of polycarbonates - C08L 83/00: Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers - C08G 77/26: nitrogen-containing groups - C08K 2003/2251: {of chromium} - 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) - C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS ## Abstract The present disclosure relates to thermoplastic compositions. The disclosed compositions comprise a polycarbonate polymer, a polysiloxane-polycarbonate copolymer, a laser direct structuring additive, and a siloxane additive. Also disclosed are methods for making the disclosed thermoplastic compositions and articles of manufacture comprising the disclosed thermoplastic compositions. ## Claims ### Claim 1 A thermoplastic composition comprising: a. a polycarbonate polymer; b. a polysiloxane-polycarbonate copolymer; c. a laser direct structuring additive; and d. a siloxane additive; wherein a molded article having a thickness of 3.2 mm formed from the composition exhibits a notched izod impact energy that is at least 10% greater than that exhibited by a molded article formed from an identical reference composition in the absence of the siloxane additive. ### Claim 2 (depends on 1) The thermoplastic composition of claim 1, wherein the molded article formed from the composition exhibits a notched izod impact energy that is at least 100% greater than that exhibited by a molded article formed from an identical reference composition in the absence of the siloxane additive. ### Claim 3 (depends on 1) The thermoplastic composition of claim 1, wherein the molded article formed from the composition exhibits a notched izod impact energy that is at least 500% greater than that exhibited by a molded article formed from an identical reference composition in the absence of the siloxane additive. ### Claim 4 (depends on 1) The thermoplastic composition of claim 1, comprising: a. a bisphenol A polycarbonate polymer; b. a polysiloxane-polycarbonate block copolymer comprising diorganopolysiloxane blocks of the general formula (VII): wherein x is from about 40 to about 60; and polycarbonate blocks are derived from bisphenol-A monomers; wherein the diorganopolysiloxane blocks are randomly distributed in the polysiloxane-polycarbonate block copolymer; wherein the siloxane content of the polysiloxane-polycarbonate block copolymer is about 20 wt %; c. a laser direct structuring additive; and d. an siloxane additive; wherein the molded article formed from the composition exhibits a notched izod impact energy at 23° C. of at least 500 J/m and a notched izod impact energy at −23° C. of at least 300 J/m. ### Claim 5 (depends on 4) The thermoplastic composition of claim 4, wherein the bisphenol A polycarbonate polymer of a) comprises a blend of at least two different bisphenol A polycarbonates. ### Claim 6 (depends on 4) The thermoplastic composition of claim 4, wherein the molded article formed from the composition exhibits ductile failure mode as measured according to ASTM D256-2010. ### Claim 7 (depends on 4) The thermoplastic composition of claim 4, comprising: a. from 5 weight % to 20 weight % bisphenol A polycarbonate relative to the total weight of the thermoplastic composition in the absence of the oligomeric siloxane additive; and b. from 50 to 80 weight % polysiloxane-polycarbonate copolymer relative to the total weight of the thermoplastic composition in the absence of the siloxane additive. ### Claim 8 (depends on 4) The thermoplastic composition of claim 4, wherein the laser direct structuring additive is present in the thermoplastic composition in an amount of from 5 weight % to 15 weight % relative to the total weight of the thermoplastic composition in the absence of the siloxane additive. ### Claim 9 (depends on 4) The thermoplastic composition of claim 4, wherein the laser direct structuring additive is selected from a heavy metal mixture oxide spinel, a copper salt, or a combination thereof. ### Claim 10 (depends on 9) The thermoplastic composition of claim 9, wherein the laser direct structuring additive comprises copper chromium oxide spinel. ### Claim 11 (depends on 4) The thermoplastic composition of claim 4, wherein the siloxane additive is present in a super addition amount in the range of from greater than 0 weight % to 5 weight %. ### Claim 12 (depends on 4) The thermoplastic composition of claim 4, wherein the siloxane additive is present in a super addition amount in the range of from 1 weight % to 3 weight %. ### Claim 13 (depends on 4) The thermoplastic composition of claim 4, wherein the siloxane additive comprises an amino siloxane. ### Claim 14 (depends on 4) The thermoplastic composition of claim 4, wherein the siloxane additive comprises a phenyl siloxane. ### Claim 15 (depends on 4) The thermoplastic composition of claim 4, further comprising one or more optional additives selected from an antioxidant, flame retardant, inorganic filler, and stabilizer. ### Claim 16 A method for making a thermoplastic composition; comprising forming a blend composition comprising: a. a polycarbonate polymer; b. a polysiloxane-polycarbonate copolymer; c. a laser direct structuring additive; and d. a siloxane additive; wherein a molded article having a thickness of 3.2 mm formed from the blend composition exhibits a notched izod impact energy that is at least 10% greater than that exhibited by a molded article formed from an identical reference blend composition in the absence of the siloxane additive. ### Claim 17 (depends on 16) The method of claim 16, wherein the molded article formed from the composition exhibits a notched izod impact energy that is at least 100% greater than that exhibited by a molded article formed from an identical reference composition in the absence of the siloxane additive. ### Claim 18 (depends on 16) The method of claim 16, wherein the molded article formed from the composition exhibits a notched izod impact energy that is at least 500% greater than that exhibited by a molded article formed from an identical reference composition in the absence of the siloxane additive. ### Claim 19 (depends on 16) The method of claim 16, wherein the formed blend composition comprises: a. a bisphenol A polycarbonate polymer; b. a polysiloxane-polycarbonate block copolymer comprising diorganopolysiloxane blocks of the general formula (VII): wherein x is from about 40 to about 60; and polycarbonate blocks are derived from bisphenol-A monomers; wherein the diorganopolysiloxane blocks are randomly distributed in the polysiloxane-polycarbonate block copolymer; wherein the siloxane content of the polysiloxane-polycarbonate block copolymer ranges from 4 mole % to 20 mole %; c. a laser direct structuring additive; and d. a siloxane additive; wherein the molded article formed from the composition exhibits a notched izod impact energy at 23° C. of at least 500 J/m and a notched izod impact energy at −23° C. of at least 300 J/m. ### Claim 20 (depends on 19) The method of claim 19, wherein the bisphenol A polycarbonate polymer comprises a blend of at least two different bisphenol A polycarbonates. ### Claim 21 (depends on 19) The method of claim 19, wherein the molded article formed from the composition exhibits ductile failure mode according to ASTM D256-2010. ### Claim 22 (depends on 19) The method of claim 19, wherein the formed blend composition comprises: a. from 5 weight % to 20 weight % bisphenol A polycarbonate relative to the total weight of the thermoplastic composition in the absence of the siloxane additive; and b. from 50 to 80 weight % polysiloxane-polycarbonate copolymer relative to the total weight of the thermoplastic composition in the absence of the siloxane additive. ### Claim 23 (depends on 19) The method of claim 19, wherein the laser direct structuring additive is present in the formed blend composition in an amount of from 5 weight % to 15 weight % relative to the total weight of the thermoplastic composition in the absence of the siloxane additive. ### Claim 24 (depends on 19) The method of claim 19, wherein the laser direct structuring additive is selected from a heavy metal mixture oxide spinel, a copper salt, or a combination thereof. ### Claim 25 (depends on 19) The method of claim 19, wherein the laser direct structuring additive comprises copper chromium oxide spinel. ### Claim 26 (depends on 19) The method of claim 19, wherein the siloxane additive is present in the formed blend composition in a super addition amount in the range of from greater than 0 weight % to 5 weight %. ### Claim 27 (depends on 19) The method of claim 19, wherein the siloxane additive is present in the formed blend in a super addition amount in the range of from 1 weight % to 3 weight %. ### Claim 28 (depends on 19) The method of claim 19, wherein the siloxane additive comprises an amino siloxane. ### Claim 29 (depends on 19) The method of claim 19, wherein the siloxane additive comprises a phenyl siloxane. ### Claim 30 (depends on 19) The method of claim 19, wherein the blend composition further comprises one or more optional additives selected from an antioxidant, flame retardant, inorganic filler, and stabilizer. ### Claim 31 (depends on 19) The method of claim 19, wherein the blend composition is formed by extrusion blending. ### Claim 32 (depends on 19) The method of claim 19, further comprising forming a molded part from the formed blend composition. ### Claim 33 (depends on 32) The method of claim 32, further comprising subjecting the molded part to a laser direct structuring process.