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公开(公告)号：US20200376822A1
公开(公告)日：2020-12-03
申请号：US16622322
申请日：2018-04-05
Applicant: BASF SE
Inventor： Robert LOOS , Joerg AUFFERMANN , Norbert EFFEN , Nora SCHLUTT , Carsten SINKEL , Jerome LOHMANN , Gabriel SKUPIN , Andreas KUENKEL
Abstract: The invention relates to a biodegradable three-layer polyester film of 8 to 20 μm in thickness having a layer construction NB/C or preferably A/B/A, wherein the two outer layers (A) or (A, C) are composed of: Ai) 55% to 99.99% by weight based on the polyester mixture of the outer layers of a polyester selected from the group consisting of: polybutylene sebacate-co-terephthalate, polybutylene sebacate-co-adipate-co-terephthalate, polybutylene sebacate-co-succinate-co-terephthalate or mixtures thereof or a mixture of polybutylene sebacate-co-terephthalate and polybutylene adipate-co-terephthalate; Aii) 0.01% to 5% by weight based on the polyester mixture of the outer layers of at least one additive selected from the group consisting of: a wax, a plasticizer, a nucleating agent, antifogging agents, fillers and an antiblocking agent; and Aiii) 0% to 44.99% by weight based on the polyester mixture of the outer layers of a further biodegradable polymer selected from the group consisting of: polylactic acid (PLA), polycaprolactone (PCL), polyhydroxyalkanoate, polypropylene carbonate (PPC) or polyester produced from aliphatic dicarboxylic acids and an aliphatic dihydroxy compound; and the middle layer B is composed of: Bai) 40% to 75% by weight based on the mixture of the middle layer of a biodegradable aliphatic-aromatic polyester; Baii) 25% to 40% by weight based on the mixture of the middle layer of starch having a plasticizer content of 0% to 5% by weight based on the total weight of the component Baii); and Baiii) 0% to 20% by weight based on the mixture of the middle layer of a further biodegradable polymer selected from the group consisting of: polylactic acid (PLA), polycaprolactone (PCL), polyhydroxyalkanoate, polypropylene carbonate (PPC) or polyester produced from aliphatic dicarboxylic acids and an aliphatic dihydroxy compound; or Bbi) 25% to 70% by weight based on the mixture of the middle layer of a biodegradable aliphatic-aromatic polyester; Bbii) 30% to 55% by weight based on the mixture of the middle layer of starch having a plasticizer content of 5% to 35% by weight based on the total weight of the component Bbii); and Bbiii) 0% to 20% by weight based on the mixture of the middle layer of a further biodegradable polymer selected from the group consisting of: polylactic acid (PLA), polycaprolactone (PCL), polyhydroxyalkanoate, polypropylene carbonate (PPC) or polyester produced from aliphatic dicarboxylic acids and an aliphatic dihydroxy compound.
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Patent Agency Ranking
公开(公告)号：US20220119598A1
公开(公告)日：2022-04-21
申请号：US17427158
申请日：2020-01-27
Applicant: BASF SE
Inventor： Robert LOOS , Norbert EFFEN , Nora SCHLUTT , Carsten SINKEL , Joerg AUFFERMANN
Abstract: The present invention relates to a single-stage process for the production of starch blends in a twin-screw extruder or two twin-screw extruders arranged in series, where i) the starch, together with a plasticizer, passes through a wetting section of length 8D to 30D in an extruder or in a wetting section of length 8D to 80D if two extruders are used at temperatures below the gelatinization temperature of the starch, with mixing, where D is defined as the screw diameter of the screw cylinder and the wetting section is defined as starting at that point on the extruder screw at which the starch and the entire or partial quantity of plasticizer encounter one another and ending at that point in the extruder at which the starch is gelatinized and is digested to give thermoplastic starch; ii) in a plastifying section of length 10D to 50D the extruder temperature is adjusted stepwise to above 130° C., where the starch is digested, destructured and thermoplastified, and is dispersed in a starch-immiscible polymer, and a water content below 5%, based on the starch blend, is established before the material leaves the extruder; where the starch-immiscible polymer is added in molten or granular form at any desired point in the extruder, and a mixture of all of the components present is consequently produced.
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公开(公告)号：US20220033645A1
公开(公告)日：2022-02-03
申请号：US17311177
申请日：2019-12-05
Applicant: BASF SE
Inventor： Jerome LOHMANN , Maximilian LEHENMEIER , Norbert EFFEN , Martin BUSSMANN , Michael Bernhard SCHICK , Timo Benjamin WITT
IPC: C08L67/02
Abstract: The present invention relates to a process for producing a (co)polyester, wherein the (co)polyester at least partially consists of 1,4-butylene dicarboxylate units, in a degassing plant, wherein the crude (co)polyester is degassed in the presence of 0.1% to 5% by weight, based on the total weight of the input materials, of an entraining agent at a pressure between 5 to 300 mbar.
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公开(公告)号：US20210155792A1
公开(公告)日：2021-05-27
申请号：US16639313
申请日：2018-08-09
Applicant: BASF SE
Inventor： Maximilian LEHENMEIER , Martin BUSSMANN , Norbert EFFEN , Johannes Klaus SPRAFKE , Gabriel SKUPIN
Abstract: The present invention relates to an injection molded article comprising: i) 30% to 90% by weight based on the total weight of the components i to iii of a biodegradable polyester comprising: i-a) 90 to 100 mol % based on the components a to b of succinic acid; i-b) 0 to 10 mol % based on the components a to b of one or more C6-C20 dicarboxylic acids; i-c) 99 to 100 mol % based on the components a to b of 1,3-propanediol or 1,4-butanediol; i-d) 0% to 1% by weight based on the components a to c of a chain extender and/or branching agent; ii) 0% to 35% by weight based on the total weight of the components i to iii of polylactic acid; iii) 10% to 35% by weight based on the total weight of the components i to iii of at least one methacryloylsilane- or vinylsilane-modified silicate selected from the group consisting of: kaolin, muscovite, montmorillonite, talc and wollastonite.
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公开(公告)号：US20220195113A1
公开(公告)日：2022-06-23
申请号：US17612246
申请日：2020-05-19
Applicant: BASF SE
Inventor： Timo Benjamin WITT , Norbert EFFEN , Jerome LOHMANN , Motonori YAMAMOTO , Andreas KUENKEL
IPC: C08G63/90 , C08G63/183 , C08G63/80
Abstract: The present invention relates to a continuous process for purifying an aliphatic-aromatic polyester constructed from aliphatic dicarboxylic acids, aromatic dicarboxylic acids and aliphatic diols in a degassing apparatus, wherein the crude polyester is degassed for 3 to 30 minutes at a pressure of 0.01 to 5 mbar in the presence of 1% to 7% by weight, based on the total weight of the crude polyester, of an entraining agent.
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公开(公告)号：US20200255655A1
公开(公告)日：2020-08-13
申请号：US16639294
申请日：2018-08-09
Applicant: BASF SE
Inventor： Maximilian LEHENMEIER , Martin BUSSMANN , Norbert EFFEN , Johannes Klaus SPRAFKE , Gabriel SKUPIN
IPC: C08L67/02
Abstract: The present invention relates to an injection molded article comprising: i) 27% to 87% by weight based on the total weight of the components i to iv of a polyester constructed from aliphatic dicarboxylic acids and aliphatic diols; ii) 3% to 15% by weight based on the total weight of the components i to iv of an aliphatic-aromatic polyester comprising: ii-a) 30 to 70 mol % based on the components ii-a to ii-b of a C6-C18-dicarboxylic acid; ii-b) 30 to 70 mol % based on the components ii-a to ii-b of terephthalic acid; ii-c) 99 to 100 mol % based on the components ii-a to ii-b of 1,3-propanediol or 1,4-butanediol; ii-d) 0% to 1% by weight based on the components ii-a to ii-c of a chain extender and/or branching agent; iii) 0% to 35% by weight based on the total weight of the components i to iv of polylactic acid; iv) 10% to 35% by weight based on the total weight of the components i to iv of at least one surface-modified silicate selected from the group consisting of: kaolin, muscovite, montmorillonite, talc and wollastonite.
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