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公开(公告)号：US12240955B2
公开(公告)日：2025-03-04
申请号：US17627356
申请日：2020-07-10
Applicant: KANEKA CORPORATION
Inventor： Asuka Fukutome , Tetsuo Okura , Shunsuke Sato
Abstract: A method for producing a poly(3-hydroxybutyrate) resin-containing composition for melt processing includes: heating a material containing a poly(3-hydroxybutyrate) resin to a temperature equal to or higher than a melting point peak temperature in differential scanning calorimetry analysis of the poly(3-hydroxybutyrate) resin and equal to or lower than a melting point peak end temperature in the differential scanning calorimetry analysis of the poly(3-hydroxybutyrate) resin, wherein the difference between the melting point peak temperature and the melting point peak end temperature of the poly(3-hydroxybutyrate) resin is 10° C. or more; and extruding the heated material to obtain a composition for melt processing that has a new crystallization peak at a temperature higher than the melting point peak temperature.
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Patent Agency Ranking
公开(公告)号：US20150232660A1
公开(公告)日：2015-08-20
申请号：US14433504
申请日：2013-10-01
Applicant: KANEKA CORPORATION
Inventor： Tetsuo Okura , Ryohei Koyama
CPC classification number: C08L67/04 , C08K3/36 , C08K5/0016 , C08K5/10 , C08K13/02 , C08L67/02 , C08L101/16 , C08L2205/02
Abstract: Provided is a resin composition that is suitable for use in producing a film or sheet having high tear strength and is excellent in processability, mechanical properties, and biodegradability. The resin composition is a biodegradable polyester resin composition containing an aliphatic polyester (P3HA) having a repeating unit represented by the following general formula (1) [—CHR—CH2—CO—O—] (1) (wherein R is an alkyl group represented by CnH2n+1 and n is an integer of 1 or more and 15 or less), polybutylene adipate terephthalate (PBAT), and hydrophilic silica (A), wherein a weight ratio of the aliphatic polyester (P3HA) to the polybutylene adipate terephthalate (PBAT) is 90/10 to 10/90, and an amount of the hydrophilic silica (A) contained is 2 to 30 parts by weight with respect to 100 parts by weight of a total amount of the aliphatic polyester (P3HA) and the polybutylene adipate terephthalate (PBAT) contained.
Abstract translation: 本发明提供一种适用于制造撕裂强度高，加工性，机械特性，生物降解性优异的膜或片的树脂组合物。 树脂组合物是含有具有下述通式（1）表示的重复单元的脂肪族聚酯（P3HA）[-CHR-CH2-CO-O-]（1）（式中，R为烷基）的生物降解性聚酯树脂组合物 由CnH2n + 1表示，n为1以上且15以下的整数），聚对苯二甲酸丁二醇酯（PBAT）和亲水性二氧化硅（A），其中脂肪族聚酯（P3HA）与聚己二酸丁二醇酯 （PBAT）为90/10〜10/90，亲水性二氧化硅（A）的含量相对于脂肪族聚酯（P3HA）的总量100重量份为2〜30重量份， 聚对苯二甲酸丁二醇酯（PBAT）。
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公开(公告)号：US12221538B2
公开(公告)日：2025-02-11
申请号：US17266676
申请日：2019-08-19
Applicant: KANEKA CORPORATION
Inventor： Tetsuo Okura
Abstract: Provided is a poly(3-hydroxybutyrate) resin tube including a poly(3-hydroxybutyrate) resin, the tube having a wall thickness of 0.1 to 0.6 mm. The difference between the melting point peak temperature and the melting point peak end temperature in differential scanning calorimetry analysis of the poly(3-hydroxybutyrate) resin is preferably 10° C. or higher. Preferably, production of the tube includes the step of melting a poly(3-hydroxybutyrate) resin in an extruder, then extruding the resin from an annular die, and introducing the resin into water, the annular die temperature being set to a temperature between the melting point peak temperature and the melting point peak end temperature in differential scanning calorimetry analysis of the poly(3-hydroxybutyrate) resin.
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公开(公告)号：US12209167B2
公开(公告)日：2025-01-28
申请号：US17480387
申请日：2021-09-21
Applicant: KANEKA CORPORATION
Inventor： Tetsuo Okura
IPC: C08J5/18 , B29B11/10 , B29B11/14 , B29C51/00 , B29C51/10 , B29C51/42 , B29K67/00 , B29L31/00 , B65D1/26 , B65D25/04 , B65D43/02 , C08L67/04
Abstract: Provided is a resin sheet for thermoforming, the resin sheet containing a poly(3-hydroxybutyrate) resin. A difference between a melting point peak temperature and a melting point peak end temperature in differential scanning calorimetry analysis of the poly(3-hydroxybutyrate) resin is 10° C. or more. The sheet has a thickness of 0.15 to 1 mm. The melt viscosity of the poly(3-hydroxybutyrate) resin at 160° C. is preferably 10000 poise or more.
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公开(公告)号：US11053386B2
公开(公告)日：2021-07-06
申请号：US16740572
申请日：2020-01-13
Applicant: KANEKA CORPORATION
Inventor： Ryohei Koyama , Tetsuo Okura
IPC: C08L67/04 , B29C49/00 , C08K5/11 , C08K5/14 , C08K5/1535 , C08J3/24 , C08K5/10 , B29K67/00 , C08L101/16
Abstract: Provided are a resin composition containing poly(3-hydroxyalkanoate), the resin composition enabling a film or a sheet to be stably produced under practical processing conditions by inflation molding; and a method for producing the resin composition. The resin composition includes 100 parts by weight of poly(3-hydroxyalkanoate) and 5 to 15 parts by weight of an ester compound, and having a ratio of 3.5×10−2 to 4.8×10−2 (sec/[Pa·s]) between a melt viscosity (Pa·s) and a drawdown time (sec).
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公开(公告)号：US09850376B2
公开(公告)日：2017-12-26
申请号：US14433504
申请日：2013-10-01
Applicant: KANEKA CORPORATION
Inventor： Tetsuo Okura , Ryohei Koyama
CPC classification number: C08L67/04 , C08K3/36 , C08K5/0016 , C08K5/10 , C08K13/02 , C08L67/02 , C08L101/16 , C08L2205/02
Abstract: A resin composition for producing a film or sheet having high tear strength that is excellent in processability, mechanical properties, and biodegradability. The resin composition is a biodegradable polyester resin composition containing: (i) an aliphatic polyester (P3HA) having a repeating unit of formula (1): [—CHR—CH2—CO—O—] (1), wherein R is an alkyl group represented by CnH2n+1, where n is an integer of 1 or more and 15 or less; (ii) polybutylene adipate terephthalate (PBAT); and hydrophilic silica (A), wherein a weight ratio of the aliphatic polyester (P3HA) to the polybutylene adipate terephthalate (PBAT) is 90/10 to 10/90, and an amount of the hydrophilic silica (A) is 2 to 30 parts by weight with respect to 100 parts by weight of a total amount of the aliphatic polyester (P3HA) and the polybutylene adipate terephthalate (PBAT) combined.
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