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公开(公告)号:US11891503B2
公开(公告)日:2024-02-06
申请号:US16494098
申请日:2018-03-12
IPC分类号: C08L53/02 , A61M39/00 , C08F297/04 , C08L91/00
CPC分类号: C08L53/02 , A61M39/00 , C08F297/044 , C08L91/00 , C08L2203/02 , C08L2207/04
摘要: Thermoplastic elastomer compositions can be use for medical applications, Comprising: a) 97.1 to 90.9 wt.-% star-shaped block copolymer A with identical arms of the structure [S1-(S/B)k-(S/B)I-(S/B)m-S2]n-X, where S1 and S2 are vinylaromatic hard polymer and S/B are soft random vinylaromatic/diene copolymer blocks; X is a coupling center; and b) 2.9 to 9.1 wt.-% plasticizer B.
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公开(公告)号:US11326014B2
公开(公告)日:2022-05-10
申请号:US16622520
申请日:2018-06-18
IPC分类号: C08F297/04 , C08F6/10
摘要: The invention relates to a vinyl aromatic/diene-block copolymer A, obtained by an anionic polymerization of a monomer composition, comprising: Al: 60-95 wt.-% of at least one vinyl aromatic monomer, and A2:5-40 wt.-% of at least one diene monomer, wherein the vinyl aromatic/diene-block copolymer A in total comprises less than 10 parts per million (ppm) of acetaldehyde, methacrolein and styrene based on the total amount of vinyl aromatic/diene-block copolymer A; the vinyl aromatic/diene-block copolymer A has improved orgnoleptic properties and is in particular suitable for producing food packaging materials.
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公开(公告)号:US11041070B2
公开(公告)日:2021-06-22
申请号:US16471827
申请日:2017-12-14
IPC分类号: C08L53/02 , B65D75/00 , C08F297/04 , C08J5/18
摘要: Polymer compositions comprising styrene butadiene block-copolymers (SBC) can be used for shrink-wrap films, a stiff star-shaped SBC block copolymer A having two short branches of a single copolymer block (B/S)Ai and two long branches of the structure St-[(B/S)A]n-(B/S)Ai or [(B/S)A]n-(B/S)Ai are used in said polymer composition, and the production of shrink-wrap films and of multilayer films is described.
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公开(公告)号:US11066503B2
公开(公告)日:2021-07-20
申请号:US16492768
申请日:2018-03-12
IPC分类号: C08F293/00 , C08F297/04 , A61L29/06 , A61L29/12 , A61L29/14 , C08K5/01 , C08K5/09 , C08K5/11
摘要: Thermoplastic elastomer compositions can be used for medical skin contact applications, comprising: a) 90.9 to 69.0 wt.-% star-shaped block copolymer A with 4 arms of the general structure [S1—(S/B)k—(S/B)I—(S/B)m—S2]n—X, where S1 and S2 are vinylaro-matic hard polymer and S/B are soft random vinylaromatic/diene copolymer blocks; X is a coupling center; and b) 9.1 to 31.0 wt.-% of a plasticizer B: b1) a mixture of mineral oil B1 and cyclohexane 1,2-dicarboxylic acid C8 to C10 dialkyl ester B2; or b2) a mixture of mineral oil B1 and vegetable oil B3.
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公开(公告)号:US11879059B2
公开(公告)日:2024-01-23
申请号:US16487211
申请日:2018-02-19
发明人: Michiel Verswyvel , Norbert Niessner , Daniel Wagner , Michael Schuster , Geert Verlinden , Bart Van-Den-Bossche , Konrad Knoll
CPC分类号: C08L53/02 , C08J5/18 , C08J2353/02 , C08J2453/02 , C08L2203/162 , C08L2205/025 , C08L2205/03 , C08L2205/06
摘要: Polymer compositions comprising stiff and tough star shaped styrene butadiene block-copolymers A1 and A2 can be used for making shrink films. Block copolymer A2 preferably has the structure
with hard blocks Se and Si, hard random copolymer blocks (B/S)Ae, soft random copolymer blocks (B/S)B coupled by a coupling agent X.
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