# US 2013/0157069 A1 · Thermoplastic polymer composition and molded article > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0157069 A1 - Document ID: US20130157069A1 - Status: Published application - Kind: A1 - Application number: 13/818,695 - Filed: 2011-08-24 - Published: 2013-06-20 - Earliest claimed: 2010-08-27 - Assignees: Kuraray Co., Ltd. - Inventors: Asako Minamide; Mikio Masuda - Web page: https://patentgrep.com/patent/US20130157069A1 ## CPC - C08L 53/02: of vinyl-aromatic monomers and conjugated dienes - B32B 15/08: of synthetic resin - B32B 17/10018: {comprising only one glass sheet} - B32B 27/08: of synthetic resin - C08L 23/10: Homopolymers or copolymers of propene - C08L 23/26: modified by chemical after-treatment (saponified copolymers C08L23/0861; unsaturated acid salts C08L23/0876) - C08L 29/14: Homopolymers or copolymers of acetals or ketals obtained by polymerisation of unsaturated acetals or ketals or by after-treatment of polymers of unsaturated alcohols - C08L 51/06: grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond - C08L 53/025: {modified} - C09J 123/10: Homopolymers or copolymers of propene - C09J 153/02: Vinyl aromatic monomers and conjugated dienes - C09J 153/025: {modified} - Y10T 428/31667: Next to addition polymer from unsaturated monomers, or aldehyde or ketone condensation product - Y10T 428/31696: Including polyene monomers [e.g., butadiene, etc.] - Y10T 428/31931: Polyene monomer-containing - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A thermoplastic polymer composition which is excellent in flexibility, mechanical properties, moldability, and particularly in heat resistance and is capable of adhering to ceramics, metals, and synthetic resins even at low temperature (for example, 190° C. or lower) without the treatment with a primer, and a molded product produced by using the thermoplastic polymer composition are described. The thermoplastic polymer composition includes 100 parts by mass of a thermoplastic elastomer (A), 1 to 100 parts by mass of a polyvinyl acetal resin (B), and 5 to 100 parts by mass of a polar group-containing polypropylene resin (C). The thermoplastic elastomer (A) is a block copolymer which is constituted by a polymer block including aromatic vinyl compound units and a polymer block including isoprene units, butadiene units, or isoprene/butadiene units wherein the total of a content of 1,2-bonding and a content of 3,4-bonding is 40 mol % or more, or the thermoplastic elastomer (A) is a hydrogenated product of the block copolymer. ## Claims ### Claim 1 A thermoplastic polymer composition comprising 100 parts by mass of a thermoplastic elastomer, 1 to 100 parts by mass of a polyvinyl acetal resin, and 5 to 100 parts by mass of a polypropylene resin comprising a polar group, wherein the thermoplastic elastomer is a block copolymer or a hydrogenated product of the block copolymer, the block copolymer comprises a polymer block comprising an aromatic vinyl compound unit and a polymer block comprising an isoprene unit, a butadiene unit, or an isoprene/butadiene unit, and a total of a content of 1,2-bonding and a content of 3,4-bonding is 40 mol % or more. ### Claim 2 (depends on 1) The thermoplastic polymer composition according to claim 1, comprising 100 parts by mass of the thermoplastic elastomer, 5 to 70 parts by mass of the polyvinyl acetal resin, and 5 to 70 parts by mass of the polypropylene resin. ### Claim 3 (depends on 1) The thermoplastic polymer composition according to claim 1, further comprising 0.1 to 300 parts by mass of a softener. ### Claim 4 (depends on 1) The thermoplastic polymer composition according to claim 1, further comprising 1 to 100 parts by mass of a tackifier resin. ### Claim 5 (depends on 1) The thermoplastic polymer composition according to claim 1, wherein the polyvinyl acetal resin is obtained by acetalizing a polyvinyl alcohol having an average degree of polymerization of 100 to 4,000 to a degree of acetalization of 55 to 88% by mole. ### Claim 6 (depends on 1) The thermoplastic polymer composition according to claim 1, wherein the polyvinyl acetal resin is a polyvinyl butyral. ### Claim 7 (depends on 1) The thermoplastic polymer composition according to claim 1, wherein the polypropylene resin is a carboxylic acid-modified polypropylene resin. ### Claim 8 (depends on 1) A molded product comprising the thermoplastic polymer composition according to claim 1. ### Claim 9 (depends on 8) The molded product according to claim 8, wherein the thermoplastic polymer composition is adhered to at least one material selected from the group consisting of a ceramic, a metal, and a synthetic resin. ### Claim 10 (depends on 9) The molded product according to claim 9, wherein the thermoplastic polymer composition is adhered to at least one material selected from a ceramic and a metal. ### Claim 11 (depends on 8) The molded product according to claim 8, wherein the molded product comprises at least two materials adhered to each other via the thermoplastic polymer composition. ### Claim 12 (depends on 1) The thermoplastic polymer composition according to claim 1, wherein the block copolymer comprises a polymer block comprising an aromatic vinyl compound unit and a polymer block comprising an isoprene unit. ### Claim 13 (depends on 1) The thermoplastic polymer composition according to claim 1, wherein the block copolymer comprises a polymer block comprising an aromatic vinyl compound unit and a polymer block comprising a butadiene unit. ### Claim 14 (depends on 1) The thermoplastic polymer composition according to claim 1, wherein the block copolymer comprises a polymer block comprising an aromatic vinyl compound unit and a polymer block comprising an isoprene/butadiene unit. ### Claim 15 (depends on 1) The thermoplastic polymer composition according to claim 1, wherein a total of a content of 1,2-bonding and a content of 3,4-bonding is 40 to 95 mol %. ### Claim 16 (depends on 1) The thermoplastic polymer composition according to claim 1, wherein a total of a content of 1,2-bonding and a content of 3,4-bonding is 50 to 85 mol %. ### Claim 17 (depends on 5) The thermoplastic polymer composition according to claim 5, wherein the polyvinyl acetal resin is obtained by acetalizing a polyvinyl alcohol having an average degree of polymerization of 100 to 3,000 to a degree of acetalization of 60 to 88% by mole. ### Claim 18 (depends on 5) The thermoplastic polymer composition according to claim 5, wherein the polyvinyl acetal resin is obtained by acetalizing a polyvinyl alcohol having an average degree of polymerization of 250 to 2,000 to a degree of acetalization of 75 to 85% by mole. ### Claim 19 (depends on 2) The thermoplastic polymer composition according to claim 2, comprising 100 parts by mass of the thermoplastic elastomer, 10 to 70 parts by mass of the polyvinyl acetal resin, and 10 to 70 parts by mass of the polypropylene resin. ### Claim 20 (depends on 2) The thermoplastic polymer composition according to claim 2, comprising 100 parts by mass of the thermoplastic elastomer, 10 to 50 parts by mass of the polyvinyl acetal resin, and 10 to 60 parts by mass of the polypropylene resin.