# US 2016/0355673 A1 · Blends of thermoplastic elastomers based on styrene (s-tpe) and polyolefins > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0355673 A1 - Document ID: US20160355673A1 - Status: Published application - Kind: A1 - Application number: 15/117,386 - Filed: 2015-02-10 - Published: 2016-12-08 - Earliest claimed: 2014-02-11 - Assignees: Ineos Styrolution Group GmbH - Applicants: Ineos Styrolution Group GmbH - Inventors: Konrad KNOLL; Andrea COLOMBO - Web page: https://patentgrep.com/patent/US20160355673A1 ## CPC - C08L 23/12: Polypropene - B32B 27/08: of synthetic resin - B32B 27/302: {comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers} - B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} - C08J 5/18: Manufacture of films or sheets - C08L 23/06: Polyethylene - C08L 23/0815: {with aliphatic 1-olefins containing one carbon-to-carbon double bond} - B32B 2270/00: Resin or rubber layer containing a blend of at least two different polymers - B32B 2274/00: Thermoplastic elastomer material - B32B 2307/51: Elastic - B32B 2307/712: Weather resistant - B32B 2307/7244: Oxygen barrier - B32B 2307/7246: Water vapor barrier - B32B 2553/00: Packaging equipment or accessories not otherwise provided for - C08J 2323/06: Polyethene - C08J 2323/08: Copolymers of ethene (C08J2323/16 takes precedence) - C08J 2323/12: Polypropene - C08J 2353/02: of vinyl aromatic monomers and conjugated dienes - C08J 2423/08: Copolymers of ethene (C08J2423/16 takes precedence) - C08J 2453/02: of vinyl aromatic monomers and conjugated dienes - C08L 2201/10: Transparent films; Clear coatings; Transparent materials - C08L 2203/16: used for films - C08L 2205/02: containing two or more polymers of the same C08L -group - C08L 2205/025: containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure - C08L 2205/03: containing three or more polymers in a blend - C08L 2205/035: containing four or more polymers in a blend - C08L 2207/066: LDPE (radical process) - 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) - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - 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) ## Abstract Polymer blend comprising components A, B and C: A: 1 to 19.5% by weight of an elastomeric block copolymer A based on styrene (S-TPE); B: 0.5 to 8% by weight of a compatibilizer component B; and C: 80 to 98.5% by weight of at least one semi-crystalline olefin homo- or copolymer C. The invention further relates to a composition comprising thermoplastic elastomers based on styrene (S-TPE) for use as compatibilizer of S-TPE block copolymers and polyolefins, a process for the preparation of the polymer blend, a master batch for the preparation of the polymer blend, and single- and multilayer films comprising said polymer blend and their use for food packaging and as shrink hood. ## Claims ### Claim at position 1 1-20. (canceled) ### Claim 21 Polymer blend comprising components A, B and C: A: 1 to 19.5% by weight of an elastomeric block copolymer A made from at least one block S which forms a hard phase and incorporates units of a vinylaromatic monomer, and at least one elastomeric block B/S which forms a soft phase and incorporates both units of a vinylaromatic monomer (S) and of a diene (B), where S is the vinylaromatic block and B/S is the soft phase, wherein the block is built up randomly from diene units and vinylaromatic units, and where the glass transition temperature Tg of the block S is above 25° C., and that of the block B/S is below 25° C., and the phase volume ratio of block S to block B/S is selected so that the proportion of hard phase in the entire block copolymer is from 1 to 40% by volume and the proportion of the diene is less than 50% by weight, based on A; B: 0.5 to 8% by weight of component B comprising components B1 and further optional components B2 and/or B3: B1: at least one elastomeric block copolymer selected from the group consisting of B11, B12 and B13: B11: block copolymer B11 made from at least one block S which forms a hard phase and incorporates units of a vinylaromatic monomer, and at least one elastomeric block EB which forms a soft phase and incorporates units of ethylene and butylene; and/or B12: block copolymer B12 made from at least one block S which forms a hard phase and incorporates units of a vinylaromatic monomer, and at least one elastomeric block EP which forms a soft phase and incorporates units of ethylene and propylene; and/or B13: block copolymer B13 made from at least one block S which forms a hard phase and incorporates units of a vinylaromatic monomer, and at least one elastomeric block B which forms a soft phase and incorporates units of a diene (B), and the proportion of the hard phase in the entire block copolymer is at most 45% by weight, based on B13; B2: a stiff/tough block copolymer B2 made from at least one block S which forms a hard phase and incorporates units of a vinylaromatic monomer, and at least one elastomeric block B which forms a soft phase and incorporates units of a diene (B), and the proportion of the hard phase in the entire block copolymer is more than 50% by weight, based on B2; B3: an ethylene-(C3-C18)-α-olefin copolymer B3 with a high content of (C3-C18)-α-olefin, based on B3, and having a crystallinity of less than 50%; C: 80 to 98.5% by weight of at least one semi-crystalline olefin homo- or copolymer C different from component B3; where the entire weight of components A, B and C give exactly 100% by weight. ### Claim 22 (depends on 21) A polymer blend according to claim 21, wherein component A is a block copolymer having one of the general formulae S-(B/S)-S, X-[-(B/S)-S]2, Y-[-(B/S)-S]2 Y[(B/S-S)n]m[S]l and Y[(S-B/S)n-S]m[S]l, where S is the vinylaromatic block and B/S is the soft phase, X is the radical of an n-functional initiator, Y is the radical of an m-functional or (m+l)-functional coupling agent, and l, m and n are natural numbers from 1 to 10. ### Claim 23 (depends on 21) A polymer blend according to claim 21, wherein component A is a linear styrene-butadiene block copolymer of the general structure S-(S/B)-S having, situated between the two S blocks, one or more (S/B)-random blocks having random styrene/butadiene distribution, and a 1,2-vinyl content in the styrene-butadiene copolymer block (S/B) of below 20%. ### Claim 24 (depends on 21) A polymer blend according to claim 21, comprising combinations of components A, B1, C and optionally B2 and/or B3 selected from the group consisting of: A, B1 and C; A, B1, B2 and C; A, B1, B3 and C; and A, B1, B2, B3 and C. ### Claim 25 (depends on 21) A polymer blend according to claim 21, wherein, based on the entire component B, the amount of component B1 is 1 to 100% by weight; the amount of component B2 is 0 to 99% by weight; and the amount of component B3 is 0 to 99% by weight, where the entire amounts of components B1, B2 and B3 together give exactly 100% by weight. ### Claim 26 (depends on 21) A polymer blend according to claim 21, wherein component B1 is B11 and/or B13; C is polyethylene and/or polypropylene, B3, if present, is an ethylene-octene copolymer, and B2, if present, is a SBS block copolymer. ### Claim 27 (depends on 21) A polymer blend according to claim 21, having the following composition: 1 to 10% by weight of component A, 0.8 to 2.5% by weight of component B11, B13, or a combination of B11 and B13, and 87.5 to 98.2% by weight of component C, where A, B11, B13 and C give exactly 100% by weight. ### Claim 28 (depends on 21) A polymer blend according to claim 21, having the following composition: 1 to 10% by weight of component A, 0.1 to 0.8% by weight of component B11, B13, or a combination of B11 and B13, 0.1 to 0.8% by weight of component B2, 0.1 to 0.8% by weight of component B3, and 87.6 to 98.7% by weight of component C, where A, B11, B13, B2, B3 and C give exactly 100% by weight. ### Claim 29 (depends on 21) A polymer blend according to claim 21, having the following composition: 1 to 10% by weight of component A, 0.8 to 2.5% by weight of component B11, B13, or a combination of B11 and B13, 0.8 to 2.5% by weight of component B2, and 85 to 94% by weight of component C, where A, B11, B13, B2 and C give exactly 100% by weight. ### Claim 30 (depends on 21) A polymer blend according to claim 21, having the following composition: 1 to 10% by weight of component A, 0.8 to 2.5% by weight of component B11, B13, or a combination of B11 and B13, 0.8 to 2.5% by weight of component B3, and 85 to 94% by weight of component C, where A, B11, B13, B3 and C give exactly 100% by weight. ### Claim 31 (depends on 21) A polymer blend according to claim 21, having the following composition: 10 to 17% by weight of component A, 1.0 to 6.0% by weight of component B11, B13, or a combination of B11 and B13, and 80 to 87% by weight of component C, where A, B11, B13 and C give exactly 100% by weight. ### Claim 32 (depends on 21) A polymer blend according to claim 21, having the following composition: 1 to 10% by weight of component A, 0.2 to 0.8% by weight of component B11, B13, or a combination of B11 and B13, 0.2 to 1.0% by weight of component B2, 0.1 to 0.8% by weight of component B3, and 87.4 to 98.5% by weight of component C, where A, B11, B13, B2, B3 and C give exactly 100% by weight. ### Claim 33 (depends on 21) A polymer blend according to claim 21, having the following composition: 10 to 17% by weight of component A, 0.8 to 3.0% by weight of component B11, B13, or a combination of B11 and B13, 0.8 to 3.0% by weight of component B2, and 80 to 87% by weight of component C, where A, B11, B13, B2 and C give exactly 100% by weight. ### Claim 34 (depends on 21) A polymer blend according to claim 21, having the following composition: 10 to 17% by weight of component A, 0.8 to 3.0% by weight of component B11, B13, or a combination of B11 and B13, 0.8 to 3.0% by weight of component B3, and 80 to 87% by weight of component C, where A, B11, B13, B2 and C give exactly 100% by weight. ### Claim 35 (depends on 21) A compatibilizer comprising component B as defined in claim 21 wherein, i) Component B comprises a combination of components B1 and B3 or B1, B2 and B3, and ii) the ethylene-(C3-C18)-α-olefin copolymer B3 is an ethylene-hexene or an ethylene-octene copolymer. ### Claim 36 (depends on 21) A process for the preparation of a polymer blend according to claim 21, wherein: a pre-compound of components A and B1 and, if present, components B2 and B3 is prepared in an extruder; the prepared pre-compound is pre-mixed with a polyolefin component C, and then this mixture is extruded to give the polymer blend. ### Claim 37 (depends on 21) A master batch comprising a pre-compound of components A and B1 and, if present, components B2 and B3, as defined in claim 21. ### Claim 38 (depends on 37) A master batch according to claim 37, comprising 50 to 60% by weight of component A, 10 to 20% by weight of component B1, 5 to 15% by weight of component B2 and 15 to 30% by weight of component B3, where the entire components A, B1, B2 and B3 give exactly 100% by weight. ### Claim 39 (depends on 21) A single-, bi- or multi-layer-film comprising a polymer blend according to claim 21. ### Claim 40 (depends on 39) A food packaging or shrink hood comprising a film according to claim 39. ### Claim 41 (depends on 35) A compatibilzer according to claim 35 wherein component B1 is a combination of B11 and B13.