# US 2010/0168295 A1 · Polycarbonate Flame Retardant Compositions > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0168295 A1 - Document ID: US20100168295A1 - Status: Published application - Kind: A1 - Application number: 11/990,149 - Filed: 2006-08-08 - Published: 2010-07-01 - Earliest claimed: 2005-08-16 - Inventors: Christine Breiner; Michael Tinkl; Fabien Jean Brand; Simon Kniesel - Web page: https://patentgrep.com/patent/US20100168295A1 ## CPC - C08K 5/42: Sulfonic acids; Derivatives thereof - C08J 7/0427: {with only one layer of a composition containing a polymer binder (with more layers C08J7/042)} - C08J 7/05: Forming flame retardant coatings or fire resistant coatings - C08L 69/00: Compositions of polycarbonates; Compositions of derivatives of polycarbonates - C08J 2369/00: Characterised by the use of polycarbonates; Derivatives of polycarbonates - C08J 2469/00: Characterised by the use of polycarbonates; Derivatives of polycarbonates - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) - 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) - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) ## Abstract The invention relates to a flame retardant composition, wherein a combination of selected flame retardants, particularly potassium perfluorobutane sulphonate, with fluorocarbon or siloxane terminated polycarbonates is present in a polycarbonate substrate. The combination improves the light transparency of polycarbonates. ## Claims ### Claim 1 A composition, which comprises a) At least one salt of an acid selected from the group consisting of aromatic carboxylic acids, aromatic sulphonic acids, perfluoroalkanesulphonic acids, phosphorus containing oxo acids, NH-acidic sulphonamides, NH-acidic sulphonimides and complex fluoro acids; b1) At least one compound of the formula (I) Wherein R1 and R2 independently of one another represent an aliphatic group substituted by fluorine; X1 and X2 independently of one another represent a direct bond or C1-C12alkylene; m represents a numeral from 1 to 10 000; R5, R6, R7 and R8 independently of one another represent hydrogen, C1-C12alkyl or C3-C12alkenyl; and Y represents a direct bond or a bivalent group selected from the group consisting of Wherein Both Ra and Rb represent hydrogen or halogen; or One of Ra and Rb represents hydrogen and the other one represents halogen; R3 and R4, together with the carbon atom to which they are bonded, form a C5-C8-cycloalkylidene group with 1 to 3 C1-C4alkyl groups as optional substituents; or R3 and R4 independently of one another represent hydrogen, an aliphatic group substituted by fluorine, C1-C12alkyl, C1-C12alkyl substituted by carboxy, C2-C12alkenyl, aryl, or the group of the partial formula (A) Wherein n represents a numeral from 0-10 000; and X2, Y, R2, R5, R6, R7 and R8 are as defined above; and c) A polymer substrate comprising polycarbonates or polycarbonate blends. ### Claim 2 A composition which comprises a) At least one salt of an acid selected from the group consisting of aromatic carboxylic acids, aromatic sulphonic acids, perfluoroalkanesulphonic acids, phosphorus containing oxo acids, NH-acidic sulphonamides, NH-acidic sulphonimides and complex fluoro acids; b2) At least one compound of the formula (II) Wherein R0 represents a direct bond or a bivalent group selected from the group consisting of R1 and R2 independently of one another represent a silicon containing group; R3 and R4 independently of one another represent hydrogen, an aliphatic group substituted by fluorine, a silicon containing group, C1-C12alkyl, C1-C12alkyl substituted by carboxy, C2-C12alkenyl, aryl, or a group of the partial formula (B) or R3 and R4, together with the carbon atom to which they are bonded represent C5-C8-cycloalkylidene or C5-C8-cycloalkylidene that is substituted by from 1 to 3 C1-C4alkyl groups; R5, R6, R7 and R8 independently of one another represent hydrogen, C1-C12alkyl or C3-C12alkenyl; X1 and X2 independently of one another represent a direct bond, C1-C12alkylene or C4-C25alkylene interrupted by —O—; Y1 and Y2 independently of one another represent a direct bond or a bivalent group selected from the group consisting of R9 and R10 independently of one another represent atha direct bond or C1-C4alkylene; R11, R12 and R13 independently of one another represent hydrogen, C1-C12alkyl or C3-C12alkenyl; R14 represents hydrogen, C1-C12alkyl or a silicon containing group, m represents a numeral from 0 to 10 000; and n represents a numeral from 0 to 10 000; and c) A polymer substrate comprising polycarbonates or polycarbonate blends. ### Claim 3 (depends on 1) A composition according to claim 1, which comprises as component a) at least one alkali metal, earth alkali metal or ammonium salt of an acid selected from the group consisting of perfluoroalkanesulphonic acids, phosphorus containing oxo acids or partial esters thereof, NH-acidic sulphonamides, NH-acidic sulphonimides and complex fluoro acids. ### Claim 4 (depends on 1) A composition according to claim 1, which comprises as component a) at least one alkali metal, earth alkali metal or ammonium salt of a perfluoroalkanesulphonic acid or an alkali metal, earth alkali metal or ammonium salt of a phosphorus containing oxo acid selected from the group consisting of meta-phosphoric, ortho-phosphoric or polyphosphoric acid, phosphonic acid, phosphinic acid and partial esters thereof. ### Claim 5 (depends on 1) A flame retardant composition according to claim 1, which comprises as component a) at least one alkali metal salt of a perfluoroalkanesulphonic acid. ### Claim 6 (depends on 1) A flame retardant composition according to claim 1, which comprises as component a) sodium or potassium perfluorobutane sulphonate. ### Claim 7 (depends on 1) A flame retardant composition according to claim 1, which comprises as component b1) at least one compound of the formula (I′) Wherein R1 and R2 represent an aliphatic group substituted by fluorine; X1 and X2 independently of one another represent a direct bond or C1-C12alkylene; m represents a numeral from 1 to 1 000; and R3 and R4 together with the carbon atom to which they are bonded, form a C5-C8-cycloalkylidene group with 1 to 3 C1-C4alkyl groups as optional substituents; Or R3 and R4 independently of one another represent hydrogen, an aliphatic group substituted by fluorine, C1-C12alkyl, C2-C12alkenyl, phenyl or the group of the partial formula (A′) Wherein n represents a numeral from 0-1 000; and R3, R4, X2, and R2 are as defined above. ### Claim 8 (depends on 7) A composition according to claim 7, which comprises as component b1) at least one compound (I′), wherein X1 and X2 represent ethylene; R1 and R2 represent groups of the partial formula (B) —(CF2)p—F (B) wherein p represents a numeral from 1 to 50; m represents a numeral from 2 to 50; and R3 and R4 independently of one another represent hydrogen or C1-C4alkyl or together with the carbon atom to which they are bonded form the cyclohexylidene group. ### Claim 9 (depends on 8) A composition according to claim 8, which comprises a) At least one sodium or potassium perfluorobutane sulphonate; b1) At least one compound (I′), wherein X1 and X2 represent ethylene; R1 and R2 represent groups (B), wherein p represents a numeral from 1 to 50; m represents a numeral from 2 to 50; and R3 and R4 independently of one another represent hydrogen or C1-Colkyl or together with the carbon atom to which they are bonded form the cyclohexylidene group; and c) A polymer substrate comprising polycarbonates or polycarbonate blends. ### Claim 10 (depends on 2) A composition according to claim 2, which comprises a) At least one sodium or potassium perfluorobutane sulphonate; b2) At least one compound (II), wherein R0 represents the bivalent group R3 and R4 independently of one another represent C1-C4alkyl; or R3 and R4, together with the carbon atom to which they are bonded, form the cyclohexylidene group; R5, R6, R7 and R8 represent hydrogen; X1 and X2 independently of one another represent C2-C4alkylene or C4-C25alkylene interrupted with —O—; Y1 and Y2 independently of one another represent the direct bond or a bivalent group selected from the group consisting of R9 and R10 independently of one another represent a direct bond or methylene; m represents 0 to 100, and n represents 0 to 100; and c) A polymer substrate comprising polycarbonates or polycarbonate blends. ### Claim 11 (depends on 1) A composition according to claim 1, which comprises d) further additives in addition to components a), b) and c) selected from the group consisting of polymer stabilizers and additional flame-retardants. ### Claim 12 (depends on 1) A mixture which comprises a) At least one salt of an acid selected from the group consisting of aromatic carboxylic acids, aromatic sulphonic acids, perfluoroalkanesulphonic acids, phosphorus containing oxo acids, NH-acidic sulphonamides, NH-acidic sulphonimides and complex fluoro acids; and b1) At least one compound (I) as defined in claim 1. ### Claim 13 (depends on 2) A mixture which comprises a) At least one salt of an acid selected from the group consisting of aromatic carboxylic acids, aromatic sulphonic acids, perfluoroalkanesulphonic acids, phosphorus containing oxo acids, NH-acidic sulphonamides, NH-acidic sulphonimides and complex fluoro acids; and b2) At least one compound (II), as defined in claim 2. ### Claim 14 (depends on 12) A process for imparting flame retardancy to a polymer substrate comprising polycarbonates or polycarbonate blends, which process comprises adding to said polymer substrate the mixture according to claim 12. ### Claim 15 (depends on 12) A process for imparting flame retardancy and light transparency to a polycarbonate which process comprises adding to said polymer substrate the mixture according to claim 12. ### Claim 16 (depends on 2) A composition according to claim 2, which comprises as component a) at least one alkali metal, earth alkali metal or ammonium salt of an acid selected from the group consisting of perfluoroalkanesulphonic acids, phosphorus containing oxo acids or partial esters thereof, NH-acidic sulphonamides, NH-acidic sulphonimides and complex fluoro acids. ### Claim 17 (depends on 2) A composition according to claim 2, which comprises as component a) at least one alkali metal, earth alkali metal or ammonium salt of a perfluoroalkanesulphonic acid or an alkali metal, earth alkali metal or ammonium salt of a phosphorus containing oxo acid selected from the group consisting of meta-phosphoric, ortho-phosphoric or polyphosphoric acid, phosphonic acid, phosphinic acid and partial esters thereof. ### Claim 18 (depends on 2) A flame retardant composition according to claim 2, which comprises as component a) at least one alkali metal salt of a perfluoroalkanesulphonic acid. ### Claim 19 (depends on 2) A flame retardant composition according to claim 2, which comprises as component a) sodium or potassium perfluorobutane sulphonate. ### Claim 20 (depends on 2) A composition according to claim 2, which comprises d) further additives in addition to components a), b) and c) selected from the group consisting of polymer stabilizers and additional flame-retardants. ### Claim 21 (depends on 13) A process for imparting flame retardancy to a polymer substrate comprising polycarbonates or polycarbonate blends, which process comprises adding to said polymer substrate the mixture according to claim 13. ### Claim 22 (depends on 13) A process for imparting flame retardancy and light transparency to a polycarbonate which process comprises adding to said polymer substrate the mixture according to claim 13.