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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：US20150307671A1
公开(公告)日：2015-10-29
申请号：US14441233
申请日：2013-11-08
Applicant: BASF SE
Inventor： Xin YANG , Jörg AUFFERMANN , Carsten SINKEL , Jerome LOHMANN , Robert LOOS , Gabriel SKUPIN , Andreas KÜNKEL , Lars BÖRGER
CPC classification number: C08J5/18 , C08J2300/16 , C08J2367/02 , C08J2367/03 , C08J2467/02 , C08J2467/03 , C08J2467/04 , C08K3/013 , C08K3/26 , C08K3/34 , C08K2003/265 , C08L67/02 , C08L67/04
Abstract: The invention relates to a biodegradable polyester mixture comprising: i) 71 to 91 wt %, based on the total weight of components i and ii, of a polyester I constructed from: a-1) 40 to 70 wt %, based on the total weight of components a and b, of an aliphatic C9-C16 dicarboxylic acid or of a C9-C16 dicarboxylic acid derivative; b-1) 30 to 60 wt %, based on the total weight of components a and b, of terephthalic acid or of a terephthalic acid derivative; c-1) 98 to 100 wt %, based on the total weight of components a and b, of a C3-C6 diol; d-1) 0 to 2 wt %, based on the total weight of components a and b, of an at least trihydric alcohol; e-1) 0 to 2 wt %, based on the total weight of components a to e, of a chain extender, and ii) 9 to 29 wt %, based on the total weight of components i and ii, of a polyester II constructed from: a-2) 40 to 70 wt %, based on the total weight of components a and b, of an aliphatic C4-C6 dicarboxylic acid or of a C4-C6 dicarboxylic acid derivative; b-2) 30 to 60 wt %, based on the total weight of components a and b, of terephthalic acid or of a terephthalic acid derivative; c-2) 98 to 100 wt %, based on the total weight of components a and b, of a C3-C6 diol; d-2) 0 to 2 wt %, based on the total weight of components a and b, of an at least trihydric alcohol; e-2) 0 to 2 wt %, based on the total weight of components a to e, of a chain extender.
Abstract translation: 本发明涉及可生物降解的聚酯混合物，其包含：i）基于由以下组成的聚酯I的组分i和ii的总重量的71至91重量％：a-1）40至70重量％，基于总计 脂肪族C 9 -C 16二羧酸或C 9 -C 16二羧酸衍生物的组分a和b的重量; b-1）30至60重量％，基于对苯二甲酸或对苯二甲酸衍生物的组分a和b的总重量; c-1）基于C 3 -C 6二醇的组分a和b的总重量为98〜100重量％ d-1）0至2重量％，基于组分a和b的总重量至少三元醇; e-1）0至2重量％，基于增链剂组分a至e的总重量，和ii）基于聚酯II的组分i和ii的总重量9至29重量％ 由a-2构成）40至70重量％，基于组分a和b的脂族C 4 -C 6二羧酸或C 4 -C 6二羧酸衍生物的总重量; b-2）30至60重量％，基于对苯二甲酸或对苯二甲酸衍生物的组分a和b的总重量; c-2）基于C 3 -C 6二醇组分a和b的总重量的98至100重量％; d-2）0至2重量％，基于组分a和b的总重量至少三元醇; e-2）0至2重量％，基于增链剂组分a至e的总重量。
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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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公开(公告)号：US20170362373A1
公开(公告)日：2017-12-21
申请号：US15532834
申请日：2015-11-30
Applicant: BASF SE
Inventor： Kian MOLAWI , Robert LOOS , Andreas KUNKEL
CPC classification number: C08G18/428 , C08G18/4286 , C08G18/73 , C08G63/08 , C08G63/18 , C08G63/181 , C08G63/60 , C08G63/78 , C08G63/80 , C08G63/91 , C08G63/916
Abstract: The present invention relates to biodegradable copolyesters with molecular weight Mn from 10 000 to 100 000 measured by GPC, obtainable via reaction of i) from 51 to 84% by weight, based on the copolyester, of a branched polyester middle block produced from aliphatic or aliphatic and aromatic dicarboxylic acids and from aliphatic dihydroxy compounds with molecular weight Mn from 5000 to 25 000 measured by 1H NMR with from 15.9 to 48.9% by weight, based on the copolyester, of a lactide in the presence of a catalyst, and then the resultant polyester triblock with molecular weight Mn measured by 1H NMR from 5800 to 49 500 with ii) from 0.1 to 3% by weight, based on the copolyester, of a diisocyanate. The present invention further relates to a process for the production of, and to the use of, the abovementioned biodegradable copolyesters.
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