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公开(公告)号：US20180244840A1
公开(公告)日：2018-08-30
申请号：US15903700
申请日：2018-02-23
IPC分类号： C08G63/08 , C08G63/42 , C08F246/00
CPC分类号： C08G63/08 , C08F246/00 , C08F2500/02 , C08F2500/03 , C08F2500/17 , C08F2800/10 , C08F2800/20 , C08G63/42 , C08L57/00 , C08L67/04 , C08L2205/02 , G01N25/4866 , G01N2030/486
摘要： A method for preparing blends of at least two polymer components is described herein. The disclosed method generally involves controlling relative molecular weights and ratios of the two or more polymer components by selecting a first initiator, a second initiator, and a monomer, and subjecting the reactants to conditions suitable to polymerize the monomer based at least in part on the first and second initiators in connection with obtaining the polymeric blend. The second initiator is advantageously selected based on one or more characteristics associated therewith, based on a characteristic of the first initiator. A polymeric blend produced according to such a method is also provided herein.
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公开(公告)号：US20180051156A1
公开(公告)日：2018-02-22
申请号：US15678272
申请日：2017-08-16
CPC分类号： C08J11/24 , B01D15/34 , B01J13/0065 , B01J14/00 , B01J19/0066 , C07C51/09 , C07C67/03 , C08J11/18 , C08J2367/02 , C08J2367/04 , Y02W30/706 , C07C59/08 , C07C69/68
摘要： A method for enhancing/accelerating the depolymerization of polymers (e.g., those containing hydrolyzable linkages) is described herein. The disclosed method generally involves contacting a polymer comprising hydrolyzable linkages with a solvent and an alcohol to give a polymer mixture in which the polymer is substantially dissolved, wherein the contacting is conducted at a temperature at or below the boiling point of the polymer mixture. A resulting depolymerized polymer can be separated therefrom (including, e.g., monomers and/or oligomers). Such methods can be conducted under relatively mild temperature and pressure conditions.
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公开(公告)号：US11077604B2
公开(公告)日：2021-08-03
申请号：US16148826
申请日：2018-10-01
发明人： James M. Lindsey , John Richard Campanelli , Elizabeth A. Foley , Bruce L. Anneaux , Justin A. Marro
摘要： Methods for preparing oriented polymer tubes, such as biodegradable polymer tubes suitable for in vivo use, are provided herein. The disclosed methods provide alternatives to the typical extrusion/expansion methods by which oriented polymeric tubes for such uses are commonly produced. Advantageously, the disclosed methods can provide more homogeneous molecular orientation of crystallizable polymers within the tube walls, which can endow such polymeric tubes with enhanced strength (e.g., resistance to compression) and toughness.
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公开(公告)号：US10662284B2
公开(公告)日：2020-05-26
申请号：US15903700
申请日：2018-02-23
摘要： A method for preparing blends of at least two polymer components is described herein. The disclosed method generally involves controlling relative molecular weights and ratios of the two or more polymer components by selecting a first initiator, a second initiator, and a monomer, and subjecting the reactants to conditions suitable to polymerize the monomer based at least in part on the first and second initiators in connection with obtaining the polymeric blend. The second initiator is advantageously selected based on one or more characteristics associated therewith, based on a characteristic of the first initiator. A polymeric blend produced according to such a method is also provided herein.
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公开(公告)号：US20190118456A1
公开(公告)日：2019-04-25
申请号：US16124398
申请日：2018-09-07
发明人： James M. Lindsey , John Richard Campanelli , Elizabeth A. Foley , Bruce L. Anneaux , Justin A. Marro
IPC分类号： B29C55/26 , B29C65/48 , B29C65/00 , B29C63/00 , B29C63/18 , B29C69/00 , B32B1/08 , B32B7/12 , B32B27/08 , B32B37/12 , B32B37/18 , B32B38/00 , A61F2/91 , A61L31/14 , A61L31/12
摘要： Methods for preparing oriented polymer tubes, such as biodegradable polymer tubes suitable for in vivo use, are provided herein. The disclosed methods provide alternatives to the typical extrusion/expansion methods by which oriented polymeric tubes for such uses are commonly produced. Advantageously, the disclosed methods can provide more homogeneous molecular orientation of crystallizable polymers within the tube walls, which can endow such polymeric tubes with enhanced strength (e.g., resistance to compression) and toughness.
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公开(公告)号：US20190077067A1
公开(公告)日：2019-03-14
申请号：US16148826
申请日：2018-10-01
发明人： James M. Lindsey , John Richard Campanelli , Elizabeth A. Foley , Bruce L. Anneaux , Justin A. Marro
摘要： Methods for preparing oriented polymer tubes, such as biodegradable polymer tubes suitable for in vivo use, are provided herein. The disclosed methods provide alternatives to the typical extrusion/expansion methods by which oriented polymeric tubes for such uses are commonly produced. Advantageously, the disclosed methods can provide more homogeneous molecular orientation of crystallizable polymers within the tube walls, which can endow such polymeric tubes with enhanced strength (e.g., resistance to compression) and toughness.
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