JPWO2020003064A5 - - Google Patents

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JPWO2020003064A5
JPWO2020003064A5 JP2020573015A JP2020573015A JPWO2020003064A5 JP WO2020003064 A5 JPWO2020003064 A5 JP WO2020003064A5 JP 2020573015 A JP2020573015 A JP 2020573015A JP 2020573015 A JP2020573015 A JP 2020573015A JP WO2020003064 A5 JPWO2020003064 A5 JP WO2020003064A5
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glycolide
lactide
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JP2021529597A (en
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Priority claimed from US16/021,322 external-priority patent/US11058792B2/en
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末端セグメントA及び中央セグメントBを含む構造A-B-Aの吸収性コポリマーから作製される吸収性医療用デバイスであって、前記末端セグメントAは重合グリコリドを含み、前記中央セグメントBは重合グリコリドと重合ラクチドとを含み、前記中央セグメントBは完全に非晶質であり、約30モルパーセント~約80モルパーセントの前記重合ラクチド、及び約20モルパーセント~約70モルパーセントの前記重合グリコリドを含有し、前記吸収性コポリマー中の前記重合グリコリドの総量は、前記吸収性コポリマーの約88モルパーセント~約92モルパーセントであり、前記重合ラクチドの総量は、前記吸収性コポリマーの約8モルパーセント~約12モルパーセントである、吸収性医療用デバイス。 An absorbable medical device made from an absorbent copolymer of structures ABA comprising a terminal segment A and a central segment B, wherein the terminal segment A contains a polymerized glycolide and the central segment B is a polymerized glycolide. Containing polymerized lactide, the central segment B is completely amorphous and contains from about 30 mol% to about 80 mol% of the polymerized lactide and from about 20 mol% to about 70 mol% of the polymerized glycolide. The total amount of the polymerized glycolide in the absorbent copolymer is from about 88 mol% to about 92 mol% of the absorbent copolymer, and the total amount of the polymerized lactide is from about 8 mol% to about 12 of the absorbent copolymer. A absorbent medical device that is polymerized. 前記吸収性医療用デバイスが、モノフィラメント縫合糸、マルチフィラメント縫合糸、かえしのある縫合糸、外科用メッシュ、外科用布地、フィルム、外科用テープ、及び射出成形物品からなる群から選択される、請求項1に記載の吸収性医療用デバイス。 The absorbable medical device is selected from the group consisting of monofilament sutures, multifilament sutures, barbed sutures, surgical meshes, surgical fabrics, films, surgical tapes, and injection molded articles. Item 1. The absorbent medical device according to Item 1. 吸収性マルチフィラメント縫合糸である、請求項2に記載の吸収性医療用デバイスであって、前記吸収性マルチフィラメント縫合糸が複数のフィラメントを含み、前記複数のフィラメントはポリ(ラクチド-コ-グリコリド)コポリマーを含み、前記ポリ(ラクチド-コ-グリコリド)コポリマーは、約88モルパーセント~約92モルパーセントの前記重合グリコリドと、約8モルパーセント~約12モルパーセントの前記重合ラクチドと、を含み、前記吸収性マルチフィラメント縫合糸が、約330.2μm(約13ミル)の直径と、約7.71kg(約17ポンド)の最小埋め込み前直線引張強度と、埋め込み後21日目に約6.35kg(約14ポンド)の最小平均直線引張強度と、を有し、前記吸収性マルチフィラメント縫合糸が埋め込み後約120日以内に実質的に吸収される、吸収性医療用デバイス The absorbable medical device according to claim 2, which is an absorbable multifilament suture, wherein the absorbable multifilament suture contains a plurality of filaments, and the plurality of filaments are poly (lactide-co-glycolide). ) The poly (lactide-co-glycolide) copolymer comprises from about 88 mol% to about 92 mol% of the polymerized glycolide and from about 8 mol% to about 12 mol% of the polymerized lactide. The absorbent multifilament suture has a diameter of about 330.2 μm (about 13 mils), a minimum linear tensile strength before implantation of about 7.71 kg (about 17 pounds), and about 6.35 kg 21 days after implantation. An absorbent medical device having a minimum average linear tensile strength of (about 14 pounds), wherein the absorbent multifilament suture is substantially absorbed within about 120 days after implantation. 吸収性マルチフィラメント縫合糸である、請求項2に記載の吸収性医療用デバイスであって、前記吸収性マルチフィラメント縫合糸が複数のフィラメントを含み、前記複数のフィラメントはポリ(ラクチド-コ-グリコリド)コポリマーを含み、前記ポリ(ラクチド-コ-グリコリド)コポリマーは、約88モルパーセント~約92モルパーセントの前記重合グリコリドと、約8モルパーセント~約12モルパーセントの前記重合ラクチドと、を含み、前記吸収性マルチフィラメント縫合糸が、約330.2μm(約13ミル)の直径と、約7.71kg(約17ポンド)の最小埋め込み前平均直線引張強度と、埋め込み後35日目に約3.18kg(約7ポンド)の最小平均直線引張強度と、を有し、前記吸収性マルチフィラメント縫合糸が埋め込み後約120日以内に実質的に吸収される、吸収性医療用デバイス The absorbable medical device according to claim 2, which is an absorbable multifilament suture, wherein the absorbable multifilament suture contains a plurality of filaments, and the plurality of filaments are poly (lactide-co-glycolide). ) The poly (lactide-co-glycolide) copolymer comprises from about 88 mol% to about 92 mol% of the polymerized glycolide and from about 8 mol% to about 12 mol% of the polymerized lactide. The absorbent multifilament suture has a diameter of about 330.2 μm (about 13 mils), a minimum pre-implantation average linear tensile strength of about 7.71 kg (about 17 pounds), and about 3.35 days after implantation. An absorbent medical device having a minimum average linear tensile strength of 18 kg (about 7 pounds), wherein the absorbent multifilament suture is substantially absorbed within about 120 days after implantation. 吸収性マルチフィラメント縫合糸である、請求項2に記載の吸収性医療用デバイスであって、前記吸収性マルチフィラメント縫合糸が複数のフィラメントを含み、前記複数のフィラメントはポリ(ラクチド-コ-グリコリド)コポリマーを含み、前記ポリ(ラクチド-コ-グリコリド)コポリマーは、約88モルパーセント~約92モルパーセントの前記重合グリコリドと、約8モルパーセント~約12モルパーセントの前記重合ラクチドと、を含み、前記吸収性マルチフィラメント縫合糸が、約330.2μm(約13ミル)の直径と、約7.71kg(約17ポンド)の最小埋め込み前平均直線引張強度と、埋め込み後42日目に約1.04kg(約2.3ポンド)の最小平均直線引張強度と、を有し、前記吸収性マルチフィラメント縫合糸が埋め込み後約120日以内に実質的に吸収される、吸収性医療用デバイス The absorbable medical device according to claim 2, which is an absorbable multifilament suture, wherein the absorbable multifilament suture contains a plurality of filaments, and the plurality of filaments are poly (lactide-co-glycolide). ) The poly (lactide-co-glycolide) copolymer comprises from about 88 mol% to about 92 mol% of the polymerized glycolide and from about 8 mol% to about 12 mol% of the polymerized lactide. The absorbent multifilament suture has a diameter of about 330.2 μm (about 13 mils), a minimum pre-implantation average linear tensile strength of about 7.71 kg (about 17 pounds), and about 1. An absorbable medical device having a minimum average linear tensile strength of 04 kg (about 2.3 pounds), wherein the absorbent multifilament suture is substantially absorbed within about 120 days after implantation. 吸収性マルチフィラメント縫合糸である、請求項2に記載の吸収性医療用デバイスであって、前記吸収性マルチフィラメント縫合糸が複数のフィラメントを含み、前記複数のフィラメントはポリ(ラクチド-コ-グリコリド)コポリマーを含み、前記ポリ(ラクチド-コ-グリコリド)コポリマーは、約88モルパーセント~約92モルパーセントの前記重合グリコリドと、約8モルパーセント~約12モルパーセントの前記重合ラクチドと、を含み、前記吸収性マルチフィラメント縫合糸が、約330.2μm(約13ミル)の直径と、約7.71kg(約17ポンド)の最小埋め込み前平均直線引張強度と、埋め込み後49日目に約0.45kg(約1.0ポンド)の最小平均直線引張強度と、を有し、前記吸収性マルチフィラメント縫合糸が埋め込み後約120日以内に実質的に吸収される、吸収性医療用デバイス The absorbable medical device according to claim 2, which is an absorbable multifilament suture, wherein the absorbable multifilament suture contains a plurality of filaments, and the plurality of filaments are poly (lactide-co-glycolide). ) The poly (lactide-co-glycolide) copolymer comprises from about 88 mol% to about 92 mol% of the polymerized glycolide and from about 8 mol% to about 12 mol% of the polymerized lactide. The absorbent multifilament suture has a diameter of about 330.2 μm (about 13 mils), a minimum pre-implantation average linear tensile strength of about 7.71 kg (about 17 pounds), and about 0. An absorbent medical device having a minimum average linear tensile strength of 45 kg (about 1.0 lb), wherein the absorbent multifilament suture is substantially absorbed within about 120 days after implantation. 吸収性マルチフィラメント縫合糸である、請求項2に記載の吸収性医療用デバイスであって、前記吸収性マルチフィラメント縫合糸が複数のフィラメントを含み、前記複数のフィラメントはポリ(ラクチド-コ-グリコリド)コポリマーを含み、前記ポリ(ラクチド-コ-グリコリド)コポリマーは、約88モルパーセント~約92モルパーセントの前記重合グリコリドと、約8モルパーセント~約12モルパーセントの前記重合ラクチドと、を含み、前記吸収性マルチフィラメント縫合糸が、約584.2μm(約23ミル)の直径と、約17.24kg(約38ポンド)の最小埋め込み前直線引張強度と、埋め込み後21日目に約13.61kg(約30ポンド)の最小平均直線引張強度と、を有し、前記吸収性マルチフィラメント縫合糸が埋め込み後約120日以内に実質的に吸収される、吸収性医療用デバイス The absorbable medical device according to claim 2, which is an absorbable multifilament suture, wherein the absorbable multifilament suture contains a plurality of filaments, and the plurality of filaments are poly (lactide-co-glycolide). ) The poly (lactide-co-glycolide) copolymer comprises from about 88 mol% to about 92 mol% of the polymerized glycolide and from about 8 mol% to about 12 mol% of the polymerized lactide. The absorbent multifilament suture has a diameter of about 584.2 μm (about 23 mils), a minimum pre-embedding linear tensile strength of about 17.24 kg (about 38 pounds), and about 13.61 kg 21 days after implantation. An absorbent medical device having a minimum average linear tensile strength of (about 30 pounds), wherein the absorbent multifilament suture is substantially absorbed within about 120 days after implantation. 吸収性マルチフィラメント縫合糸である、請求項2に記載の吸収性医療用デバイスであって、前記吸収性マルチフィラメント縫合糸が複数のフィラメントを含み、前記複数のフィラメントはポリ(ラクチド-コ-グリコリド)コポリマーを含み、前記ポリ(ラクチド-コ-グリコリド)コポリマーは、約88モルパーセント~約92モルパーセントの前記重合グリコリドと、約8モルパーセント~約12モルパーセントの前記重合ラクチドと、を含み、前記吸収性マルチフィラメント縫合糸が、約584.2μm(約23ミル)の直径と、約17.24kg(約38ポンド)の最小埋め込み前直線引張強度と、埋め込み後35日目に約9.07kg(約20ポンド)の最小平均直線引張強度と、を有し、前記吸収性マルチフィラメント縫合糸が埋め込み後約120日以内に実質的に吸収される、吸収性医療用デバイス The absorbable medical device according to claim 2, which is an absorbable multifilament suture, wherein the absorbable multifilament suture contains a plurality of filaments, and the plurality of filaments are poly (lactide-co-glycolide). ) The poly (lactide-co-glycolide) copolymer comprises from about 88 mol% to about 92 mol% of the polymerized glycolide and from about 8 mol% to about 12 mol% of the polymerized lactide. The absorbent multifilament suture has a diameter of about 584.2 μm (about 23 mils), a minimum pre-implantation linear tensile strength of about 17.24 kg (about 38 pounds), and about 9.07 kg 35 days after implantation. An absorbent medical device having a minimum average linear tensile strength of (about 20 pounds), wherein the absorbent multifilament suture is substantially absorbed within about 120 days after implantation. 吸収性マルチフィラメント縫合糸である、請求項2に記載の吸収性医療用デバイスであって、前記吸収性マルチフィラメント縫合糸が複数のフィラメントを含み、前記複数のフィラメントはポリ(ラクチド-コ-グリコリド)コポリマーを含み、前記ポリ(ラクチド-コ-グリコリド)コポリマーは、約88モルパーセント~約92モルパーセントの前記重合グリコリドと、約8モルパーセント~約12モルパーセントの前記重合ラクチドと、を含み、前記吸収性マルチフィラメント縫合糸が、約584.2μm(約23ミル)の直径と、約17.24kg(約38ポンド)の最小埋め込み前直線引張強度と、埋め込み後42日目に約2.49kg(約5.5ポンド)の最小平均直線引張強度と、を有し、前記吸収性マルチフィラメント縫合糸が埋め込み後約120日以内に実質的に吸収される、吸収性医療用デバイス The absorbable medical device according to claim 2, which is an absorbable multifilament suture, wherein the absorbable multifilament suture contains a plurality of filaments, and the plurality of filaments are poly (lactide-co-glycolide). ) The poly (lactide-co-glycolide) copolymer comprises from about 88 mol% to about 92 mol% of the polymerized glycolide and from about 8 mol% to about 12 mol% of the polymerized lactide. The absorbent multifilament suture has a diameter of about 584.2 μm (about 23 mils), a minimum pre-implantation linear tensile strength of about 17.24 kg (about 38 pounds), and about 2.49 kg 42 days after implantation. An absorbent medical device having a minimum average linear tensile strength of (about 5.5 pounds), wherein the absorbent multifilament suture is substantially absorbed within about 120 days after implantation. 吸収性マルチフィラメント縫合糸である、請求項2に記載の吸収性医療用デバイスであって、前記吸収性マルチフィラメント縫合糸が複数のフィラメントを含み、前記複数のフィラメントはポリ(ラクチド-コ-グリコリド)コポリマーを含み、前記ポリ(ラクチド-コ-グリコリド)コポリマーは、約88モルパーセント~約92モルパーセントの前記重合グリコリドと、約8モルパーセント~約12モルパーセントの前記重合ラクチドと、を含み、埋め込み後21日目に残存している最小直線引張強度が、初期直線引張強度値の約80パーセントであり、前記吸収性マルチフィラメント縫合糸が埋め込み後約120日以内に実質的に吸収される、吸収性医療用デバイス The absorbable medical device according to claim 2, which is an absorbable multifilament suture, wherein the absorbable multifilament suture contains a plurality of filaments, and the plurality of filaments are poly (lactide-co-glycolide). ) The poly (lactide-co-glycolide) copolymer comprises from about 88 mol% to about 92 mol% of the polymerized glycolide and from about 8 mol% to about 12 mol% of the polymerized lactide. The minimum linear tensile strength remaining on the 21st day after implantation is about 80% of the initial linear tensile strength value, and the absorbent multifilament suture is substantially absorbed within about 120 days after implantation. Suture , absorbent medical device . 吸収性マルチフィラメント縫合糸である、請求項2に記載の吸収性医療用デバイスであって、前記吸収性マルチフィラメント縫合糸が複数のフィラメントを含み、前記フィラメントはポリ(ラクチド-コ-グリコリド)コポリマーを含み、前記ポリ(ラクチド-コ-グリコリド)コポリマーは、約88モルパーセント~約92モルパーセントの前記重合グリコリドと、約8モルパーセント~約12モルパーセントの前記重合ラクチドと、を含み、埋め込み後35日目に残存している最小直線引張強度が、初期直線引張強度値の約50パーセントであり、前記吸収性マルチフィラメント縫合糸が埋め込み後約120日以内に実質的に吸収される、吸収性医療用デバイス The absorbable medical device of claim 2, which is an absorbent multifilament suture, wherein the absorbent multifilament suture comprises a plurality of filaments, wherein the filament is a poly (lactide-co-glycolide) copolymer. The poly (lactide-co-glycolide) copolymer comprises from about 88 mol% to about 92 mol% of the polymerized glycolide and from about 8 mol% to about 12 mol% of the polymerized lactide, after implantation. The minimum linear tensile strength remaining on day 35 is about 50% of the initial linear tensile strength value, and the absorbent multifilament suture is substantially absorbed within about 120 days after implantation . Absorbable medical device . 吸収性マルチフィラメント縫合糸である、請求項2に記載の吸収性医療用デバイスであって、前記吸収性マルチフィラメント縫合糸が複数のフィラメントを含み、前記複数のフィラメントはポリ(ラクチド-コ-グリコリド)コポリマーを含み、前記ポリ(ラクチド-コ-グリコリド)コポリマーは、約88モルパーセント~約92モルパーセントの前記重合グリコリドと、約8モルパーセント~約12モルパーセントの前記重合ラクチドと、を含み、埋め込み後42日目に残存している最小直線引張強度が、初期直線引張強度値の約10パーセントであり、前記吸収性マルチフィラメント縫合糸が埋め込み後約120日以内に実質的に吸収される、吸収性医療用デバイス The absorbable medical device according to claim 2, which is an absorbable multifilament suture, wherein the absorbable multifilament suture contains a plurality of filaments, and the plurality of filaments are poly (lactide-co-glycolide). ) The poly (lactide-co-glycolide) copolymer comprises from about 88 mol% to about 92 mol% of the polymerized glycolide and from about 8 mol% to about 12 mol% of the polymerized lactide. The minimum linear tensile strength remaining on the 42nd day after implantation is about 10% of the initial linear tensile strength value, and the absorbent multifilament suture is substantially absorbed within about 120 days after implantation. Suture , absorbent medical device . 吸収性マルチフィラメント縫合糸である、請求項2に記載の吸収性医療用デバイスであって、前記吸収性マルチフィラメント縫合糸が複数のフィラメントを含み、前記複数のフィラメントはポリ(ラクチド-コ-グリコリド)コポリマーを含み、前記ポリ(ラクチド-コ-グリコリド)コポリマーは、約88モルパーセント~約92モルパーセントの前記重合グリコリドと、約8モルパーセント~約12モルパーセントの前記重合ラクチドと、を含み、埋め込み後49日目に残存している最小直線引張強度が、初期直線引張強度値の約2パーセントであり、前記吸収性マルチフィラメント縫合糸が埋め込み後約120日以内に実質的に吸収される、吸収性医療用デバイス The absorbable medical device according to claim 2, which is an absorbable multifilament suture, wherein the absorbable multifilament suture contains a plurality of filaments, and the plurality of filaments are poly (lactide-co-glycolide). ) The poly (lactide-co-glycolide) copolymer comprises from about 88 mol% to about 92 mol% of the polymerized glycolide and from about 8 mol% to about 12 mol% of the polymerized lactide. The minimum linear tensile strength remaining 49 days after implantation is about 2% of the initial linear tensile strength value, and the absorbent multifilament suture is substantially absorbed within about 120 days after implantation. Suture , absorbent medical device . 吸収性マルチフィラメント縫合糸である、請求項2に記載の吸収性医療用デバイスであって、前記吸収性マルチフィラメント縫合糸が複数のフィラメントを含み、前記複数のフィラメントはポリ(ラクチド-コ-グリコリド)コポリマーを含み、前記ポリ(ラクチド-コ-グリコリド)コポリマーは、約88モルパーセント~約92モルパーセントの前記重合グリコリドと、約8モルパーセント~約12モルパーセントの前記重合ラクチドと、を含み、配向糸の、伸び率の、グラム・パー・デニールで表す引張強さに対する比が3.5未満であり、0.10g/dLの濃度で25℃のヘキサフルオロイソプロパノール中で測定するとき、固有粘度IVが1.2dL/g超である、吸収性医療用デバイス The absorbable medical device according to claim 2, which is an absorbable multifilament suture, wherein the absorbable multifilament suture contains a plurality of filaments, and the plurality of filaments are poly (lactide-co-glycolide). ) The poly (lactide-co-glycolide) copolymer comprises from about 88 mole percent to about 92 mole percent of the polymerized glycolide and from about 8 mole percent to about 12 mole percent of the polymerized lactide. The ratio of elongation to tensile strength in gram per denil of the oriented yarn is less than 3.5 and the intrinsic viscosity when measured in hexafluoroisopropanol at 25 ° C. at a concentration of 0.10 g / dL. Absorbable medical device with IV> 1.2 dL / g. 吸収性マルチフィラメント縫合糸である、請求項2に記載の吸収性医療用デバイスであって、約120℃~140℃の熱処理に少なくとも6時間供した後、10℃/分の一定加熱速度の第1の熱走査を用いる示差走査熱量測定(DSC)によって測定するとき、212℃~216℃の融点を有する、吸収性医療用デバイス The absorbable medical device according to claim 2, which is an absorbent multifilament suture, which is subjected to a heat treatment at about 120 ° C. to 140 ° C. for at least 6 hours and then has a constant heating rate of 10 ° C./min. An absorbent medical device having a melting point of 212 ° C to 216 ° C as measured by differential scanning calorimetry (DSC) using the thermal scanning of 1. 吸収性マルチフィラメント縫合糸である、請求項2に記載の吸収性医療用デバイスであって、約120℃~140℃の熱処理に少なくとも6時間供した後、10℃/分の一定加熱速度の第2の熱走査を用いる示差走査熱量測定(DSC)によって測定するとき、少なくとも210℃の融点を有する、吸収性医療用デバイス The absorbable medical device according to claim 2, which is an absorbent multifilament suture, which is subjected to a heat treatment at about 120 ° C. to 140 ° C. for at least 6 hours and then has a constant heating rate of 10 ° C./min. An absorbable medical device having a melting point of at least 210 ° C. as measured by differential scanning calorimetry (DSC) with 2 thermal scans. 抗菌剤を更に含む、請求項1に記載の吸収性医療用デバイス。 The absorbable medical device according to claim 1, further comprising an antibacterial agent. 前記抗菌剤がトリクロサンである、請求項17に記載の吸収性医療用デバイス。 The absorbable medical device according to claim 17, wherein the antibacterial agent is triclosan. 末端セグメントA及び中央セグメントBを含む構造A-B-Aの吸収性コポリマーを作製する方法であって、前記末端セグメントAは重合グリコリドを含み、前記中央セグメントBは重合グリコリドと重合ラクチドとを含み、前記方法は、
A)第1段階重合において反応容器内で完全に非晶質のプレポリマー反応生成物を形成する工程であって、開始剤としてジエチレングリコールの存在下、かつ、触媒の存在下で、約30モルパーセント~約80モルパーセントの前記重合ラクチドを約20モルパーセント~約70モルパーセントの前記重合グリコリドと重合させることにより、前記中央セグメントBへの前駆体をもたらし、前記第1段階重合の総反応時間が、ラクチドモノマーを少なくとも98モルパーセントまで重合するのに十分である、工程と、
B)先行する前記工程の反応生成物内に固体又は溶融形態の追加のグリコリドモノマーを添加する工程であって、プレポリマーと添加された前記グリコリドモノマーとの完全な混合を可能にして反応塊を形成するのに十分な撹拌速度の前記反応容器内で行われる、工程と、
C)前記反応塊を溶融状態に維持するために反応器バッチ温度を調整する工程と、
D)前記撹拌速度を低下させ、十分な変換が達成されるまで反応を継続する工程と、を含み、
前記重合グリコリドの総量は、前記吸収性コポリマーの約88モルパーセント~約92モルパーセントであり、前記重合ラクチドの量は、前記吸収性コポリマーの約8モルパーセント~約12モルパーセントである、方法。
A method of making an absorbent copolymer of structures ABA comprising a terminal segment A and a central segment B, wherein the terminal segment A contains a polymerized glycolide and the central segment B contains a polymerized glycolide and a polymerized lactide. , The above method
A) In the first stage polymerization, a step of forming a completely amorphous prepolymer reaction product in a reaction vessel, in the presence of diethylene glycol as an initiator and in the presence of a catalyst, approximately 30 mol%. By polymerizing ~ about 80 mol% of the polymerized lactide with about 20 mol% to about 70 mol% of the polymerized glycolide, a precursor to the central segment B is obtained and the total reaction time of the first stage polymerization is Sufficient to polymerize lactide monomers to at least 98 mol%, steps and
B) A step of adding a solid or melted form of additional glycolide monomer into the reaction product of the preceding step, which allows complete mixing of the prepolymer and the added glycolide monomer to allow a reaction mass. And the steps performed in the reaction vessel at a stirring rate sufficient to form the
C) A step of adjusting the reactor batch temperature in order to maintain the reaction mass in a molten state, and
D) Including the step of reducing the stirring rate and continuing the reaction until sufficient conversion is achieved.
The method, wherein the total amount of the polymerized glycolide is from about 88 mole percent to about 92 mole percent of the absorbent copolymer and the amount of the polymerized lactide is from about 8 mole percent to about 12 mole percent of the absorbent copolymer.
末端セグメントA及び中央セグメントBを含む構造A-B-Aの吸収性コポリマーを作製する方法であって、前記末端セグメントAは重合グリコリドを含み、前記中央セグメントBは重合グリコリドと重合ラクチドとを含み、前記方法は、
A)完全に非晶質のプレポリマー反応生成物を形成する工程であって、500:1~1,500:1(モノマーのモル数:開始剤のモル数)の濃度を有する開始剤としてジエチレングリコールの存在下、かつ、50,000:1~300,000:1(モノマーのモル数:触媒のモル数)の総量の触媒の存在下で、120分~180分間の第1段階の総反応時間にわたり、約30モルパーセント~約80モルパーセントの前記重合ラクチド及び約20モルパーセント~約70モルパーセントの前記重合グリコリドを約175℃~約195℃の温度で重合させることにより、前記中央セグメントBへの前駆体をもたらす、工程と、
B)先行する前記工程の反応生成物内に固体又は溶融形態の追加のグリコリドモノマーを添加する工程であって、プレポリマーと添加された前記グリコリドモノマーとの完全な混合を約30分~90分間以内に可能にするのに十分な第1の撹拌速度の反応容器内で行われる、工程と、
)反応器バッチ温度を約205℃~210℃まで上昇させる工程と、
D)リアルタイムFT-NIR遠隔分光法によって測定するとき十分な変換が達成されるまで、前記第1の撹拌速度よりも約40パーセント~約70パーセント遅い、第2の撹拌速度まで、撹拌を減速する工程であって、総時間が上記工程Bのグリコリド添加後約150分~240分である、工程と、を含み、
前記重合グリコリドの総量は、前記吸収性コポリマーの約88モルパーセント~約92モルパーセントであり、前記重合ラクチドの量は、前記吸収性コポリマーの約8モルパーセント~約12モルパーセントである、方法。
A method of making an absorbent copolymer of structures ABA comprising a terminal segment A and a central segment B, wherein the terminal segment A contains a polymerized glycolide and the central segment B contains a polymerized glycolide and a polymerized lactide. , The above method
A) Diethylene glycol as an initiator having a concentration of 500: 1 to 1,500: 1 (number of moles of monomer: number of moles of initiator) in the step of forming a completely amorphous prepolymer reaction product. In the presence of the catalyst and in the presence of a total amount of catalyst of 50,000: 1 to 300,000: 1 (number of moles of monomer: number of moles of catalyst), the total reaction time of the first step of 120 minutes to 180 minutes. Over, about 30 mol% to about 80 mol% of the polymerized lactide and about 20 mol% to about 70 mol% of the polymerized glycolide are polymerized at a temperature of about 175 ° C. to about 195 ° C. to the central segment B. The process that results in the precursor of
B) A step of adding a solid or melted form of additional glycolide monomer into the reaction product of the preceding step, wherein the prepolymer and the added glycolide monomer are completely mixed for about 30 minutes to 90 minutes. With the steps performed in the reaction vessel at a first stirring rate sufficient to allow within a minute,
C ) The process of raising the reactor batch temperature to about 205 ° C to 210 ° C, and
D) Decelerate agitation to a second agitation rate, about 40 percent to about 70 percent slower than the first agitation rate, until sufficient conversion is achieved when measured by real-time FT-NIR remote spectroscopy. Including the step, the total time of which is about 150 minutes to 240 minutes after the addition of the glycolide in the above step B.
The method, wherein the total amount of the polymerized glycolide is from about 88 mole percent to about 92 mole percent of the absorbent copolymer and the amount of the polymerized lactide is from about 8 mole percent to about 12 mole percent of the absorbent copolymer.
前記触媒がオクタン酸スズである、請求項19に記載の方法。 19. The method of claim 19 , wherein the catalyst is tin octanate. 前記触媒レベルが、約100,000:1~約250,000:1(モノマーのモル数:触媒のモル数)である、請求項19に記載の方法。 19. The method of claim 19 , wherein the level of the catalyst is from about 100,000: 1 to about 250,000: 1 (number of moles of monomer: number of moles of catalyst). 前記触媒レベルが、約150,000:1~約200,000:1(モノマーのモル数:触媒のモル数)である、請求項19に記載の方法。 19. The method of claim 19 , wherein the level of the catalyst is from about 150,000: 1 to about 200,000: 1 (number of moles of monomer: number of moles of catalyst). 前記触媒が、全触媒の一部は第1の重合段階の開始時に添加され、前記触媒の残りの量は前記グリコリドモノマーが前記プレポリマーと十分に混合された後に添加される、少なくとも二段階で添加される、請求項19に記載の方法。 The catalyst is added in at least two steps, part of the total catalyst is added at the beginning of the first polymerization step and the remaining amount of the catalyst is added after the glycolide monomer is well mixed with the prepolymer. 19. The method of claim 19 . 前記触媒が、全触媒の約30パーセント~60パーセントは第1の重合段階の開始時に添加され、前記触媒の残りの量は2回目に添加された前記グリコリドモノマーが前記第1の重合段階の前記プレポリマーと十分に混合された後に添加される、二段階で添加される、請求項19に記載の方法。 About 30 percent to 60 percent of the total catalyst was added at the beginning of the first polymerization step, and the remaining amount of the catalyst was added to the glycolide monomer a second time. 19. The method of claim 19 , wherein the method is added in two steps, which is added after being well mixed with the prepolymer. 前記触媒が、全触媒の約30パーセント~60パーセントは第1の重合段階の開始時に添加され、前記触媒の残りの量は2回目の前記グリコリドモノマーの添加の約30分~60分後に添加される、二段階で添加される、請求項19に記載の方法。 About 30 percent to 60 percent of the total catalyst is added at the beginning of the first polymerization step and the remaining amount of the catalyst is added about 30 to 60 minutes after the second addition of the glycolide monomer. The method of claim 19 , wherein the method is added in two steps.
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