# US 10,246,580 B2 · Thermoplastic polymer masterbatch > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,246,580 B2 - Document ID: US10246580B2 - Status: Granted - Kind: B2 - Application number: 15/123,278 - Filed: 2015-03-02 - Published: 2017-03-02 - Granted: 2019-04-02 - Earliest claimed: 2014-03-04 - Assignees: Dow Silicones Corporation; Multibase SA - Applicants: Dow Corning Corporation; Multibase Inc.; Multibase SA - Inventors: Aurelie Arrigoni; Stephane Cornelis; Sandrine Faletto; Yann Gradelet; Jean De La Croix Habimana; Ted Hays; Ludovic Perrin; Patrick Prele - Web page: https://patentgrep.com/patent/US10246580B2 ## CPC - C08L 23/12: Polypropene - C08J 3/005: {Processes for mixing polymers} - C08J 3/22: using masterbatch techniques - C08K 3/34: Silicon-containing compounds - C08K 5/005: {Stabilisers against oxidation, heat, light, ozone} - C08L 23/04: Homopolymers or copolymers of ethene - C08L 23/16: Ethylene-propylene or ethylene-propylene-diene copolymers - C08L 83/04: Polysiloxanes - C08L 87/005: {Block or graft polymers not provided for in groups C08L1/00 - C08L85/04} - C08G 77/20: containing silicon bound to unsaturated aliphatic groups - C08J 2323/12: Polypropene - C08J 2387/00: Characterised by the use of unspecified macromolecular compounds, obtained otherwise than by polymerisation reactions only involving unsaturated carbon-to-carbon bonds - 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) - 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) - C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS ## Abstract A process for increasing the scratch resistance of a composition comprising a thermoplastic organic polymer and a scratch resistant polymer composition per se. The process for increasing the scratch resistance of a composition comprising a thermoplastic organic polymer (P) comprises reactively mixing a thermoplastic organic polymer (A) and an organopolysiloxane (B) in a first step (I) at a temperature at which the thermoplastic organic polymer (A) and the organopolysiloxane (B) are in liquid phases to form a masterbatch. The organopolysiloxane (B) contains at least one functionality capable of reacting with the thermoplastic organic polymer (A) so that a copolymer of components (A) and (B) is formed in the masterbatch during the reactive mixing. The process further comprises a second step (II) of mixing the masterbatch with the composition comprising the thermoplastic organic polymer (P). ## Claims ### Claim 1 A process for increasing the scratch resistance of a composition comprising a thermoplastic organic polymer (P), the process comprising the steps of: (I) reactively mixing a thermoplastic organic polymer (A) and an organopolysiloxane (B) at a temperature at which the thermoplastic organic polymer (A) and the organopolysiloxane (B) are in liquid phases to form a masterbatch, wherein the organopolysiloxane (B) contains at least one functionality capable of reacting with the thermoplastic organic polymer (A) so that a copolymer of components (A) and (B) is formed in the masterbatch during the reactive mixing; and (II) mixing the masterbatch with the composition comprising thermoplastic organic polymer (P); wherein the thermoplastic organic polymer (P) is selected from the group consisting of polypropylene homopolymer, polypropylene copolymer comprising propylene units, polyethylene homopolymer, a copolymer comprising polyethylene units, and mixtures thereof; and wherein the organopolysiloxane (B) is the only organopolysiloxane added in the process. ### Claim 2 (depends on 1) The process according to claim 1, wherein the organopolysiloxane (B) comprises predominantly D units and/or T units. ### Claim 3 (depends on 1) The process according to claim 1, wherein the organopolysiloxane (B) contains alkenyl functionality. ### Claim 4 (depends on 3) The process according to claim 3, wherein the organopolysiloxane (B) is a vinyl-terminated polydimethylsiloxane. ### Claim 5 (depends on 1) The process according to claim 1, wherein the organopolysiloxane (B) has a number average molecular weight of 200,000 to 2,000,000 g/mole. ### Claim 6 (depends on 1) The process according to claim 1, wherein the thermoplastic organic polymer (A) is a polyolefin. ### Claim 7 (depends on 6) The process according to claim 6, wherein the polyolefin has a melt flow index in the range of 100 to 2,000 as measured by ASTM D1238 at a temperature of 230° C. and an applied load of 2.16 kg. ### Claim 8 (depends on 1) The process according to claim 1, wherein the thermoplastic organic polymer (P) and the thermoplastic organic polymer (A) are chemically the same. ### Claim 9 (depends on 1) The process according to claim 1, wherein the thermoplastic organic polymer (A) and the organopolysiloxane (B) are reactively mixed at a ratio of 10 to 90 parts by weight of the thermoplastic organic polymer (A) to 90 to 10 parts by weight of the organopolysiloxane (B). ### Claim 10 (depends on 1) The process according to claim 1, wherein the thermoplastic organic polymer (A) and the organopolysiloxane (B) are reactively mixed in the substantial absence of other components. ### Claim 11 (depends on 1) The process according to claim 1, wherein the thermoplastic organic polymer (A) and the organopolysiloxane (B) are reactively mixed in melt blending equipment at a temperature in the range of 180° C. to 250° C. ### Claim 12 (depends on 11) The process according to claim 11, wherein the thermoplastic organic polymer (A) and the organopolysiloxane (B) are reactively mixed in a twin-screw extruder. ### Claim 13 (depends on 1) The process according to claim 1, wherein the number average molecular weight of the reaction product of components (A) and (B) formed in the masterbatch is at least 1.1 times the number average molecular weight of the organopolysiloxane (B). ### Claim 14 (depends on 1) The process according to claim 1, wherein the masterbatch produced in step (I) is cooled and divided into pellets before being mixed with the thermoplastic organic polymer (P) in step (II). ### Claim 15 (depends on 1) The process according to claim 1, wherein the masterbatch produced in step (I) is mixed with the thermoplastic organic polymer (P) at a ratio of 1 to 10 parts by weight of the masterbatch to 99 to 90 parts by weight of the thermoplastic organic polymer (P). ### Claim 16 A scratch resistant polymer composition comprising a blend of: 99 to 90 parts by weight of a thermoplastic organic polymer (P); and 1 to 10 parts by weight of a masterbatch; wherein the masterbatch is produced by reactively mixing a thermoplastic organic polymer (A) and an organopolysiloxane (B) at a temperature at which the thermoplastic organic polymer (A) and the organopolysiloxane (B) are in liquid phases to form the masterbatch; wherein the organopolysiloxane (B) contains at least one functionality capable of reacting with the thermoplastic organic polymer (A) so that a copolymer of components (A) and (B) is formed in the masterbatch during the reactive mixing; wherein the thermoplastic organic polymer (P) is selected from the group consisting of polypropylene homopolymer, polypropylene copolymer comprising propylene units, polyethylene homopolymer, a copolymer comprising polyethylene units, and mixtures thereof; and wherein the organopolysiloxane (B) is the only source of organopolysiloxane units in the scratch resistant polymer composition. ### Claim 17 (depends on 16) The scratch resistant polymer composition according to claim 16, wherein the thermoplastic organic polymer (A) and the thermoplastic organic polymer (P) are both polypropylene. ### Claim 18 (depends on 17) An automobile interior product comprising the scratch resistant polymer composition according to claim 17. ### Claim 19 (depends on 6) The process according to claim 6, wherein the thermoplastic organic polymer (A) is polypropylene. ### Claim 20 (depends on 15) The process according to claim 15, wherein the masterbatch produced in step (I) is mixed with the thermoplastic organic polymer (P) at a ratio of 1 to 5 parts by weight of the masterbatch to 99 to 95 parts by weight of the thermoplastic organic polymer (P).