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Patent Agency Ranking
公开(公告)号：WO2019237018A1
公开(公告)日：2019-12-12
申请号：PCT/US2019/036080
申请日：2019-06-07
Applicant: ASCEND PERFORMANCE MATERIALS OPERATIONS LLC
Inventor： YUNG, Wai-Shing , SCHWIER, Chris E. , ORTEGA, Albert , OSBORN, Scott E.
Abstract: A method for tuning characteristics of a polyamide nanofiber nonwoven comprising the step of targeting a specific average nanofiber diameter and/or a specific relative viscosity for the polyamide nanofiber nonwoven. The specific average nanofiber diameter is within a range from 100 nm to 1000 nm and/or the specific relative viscosity is within a range from 5 to 75, e.g., from 15 to 50. The process further comprises the steps of extruding a polyamide composition having a moisture content with a pressurized gas through a fiber forming channel having a channel temperature to form the polyamide nanofiber nonwoven having the target average nanofiber diameter and/or relative viscosity and controlling the moisture content, the pressure of pressurized gas, and/or the channel temperature based on the specific average nanofiber diameter and/or the specific relative viscosity.
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公开(公告)号：WO2020006283A1
公开(公告)日：2020-01-02
申请号：PCT/US2019/039579
申请日：2019-06-27
Applicant: ASCEND PERFORMANCE MATERIALS OPERATIONS LLC
Inventor： GOODIN, Michael K. , SCHWIER, Chris E. , TRIA, JR., John J.
Abstract: The present disclosure relates to processes for producing high molecular weight polyamides from caprolactam. In particular, the present disclosure relates to processes for adding water during Solid State Polymerization (SSP) to remove residual caprolactam to form high molecular weight polyamides, e.g., Nylon 6 and Nylon 6,6 copolymers, having low residual caprolactam monomer content. The water addition step controls the SSP process for a specific time to produce polyamides with a desired molecular weight and low residual caprolactam monomer content.
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公开(公告)号：WO2019165250A1
公开(公告)日：2019-08-29
申请号：PCT/US2019/019211
申请日：2019-02-22
Applicant: ASCEND PERFORMANCE MATERIALS OPERATIONS LLC
Inventor： SUTTON, James , ZABCIK, John M. , SCHWIER, Chris E. , UZUNPINAR, Cihan , AKBARI, Shahram
Abstract: The present disclosure relates to a process for preparing polymers using a plug flow reactor. The process includes providing an aqueous monomer solution comprising amide monomers; evaporating the aqueous monomer solution to form a concentrated monomer solution; and polymerizing the concentrated monomer solution in a plug flow reactor comprising a shell side and a tube side to form a first process fluid comprising polymers. The concentrated monomer solution flows on the shell side from the inlet to the outlet.
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公开(公告)号：EP3814400A1
公开(公告)日：2021-05-05
申请号：EP19744941.6
申请日：2019-06-27
Applicant: Ascend Performance Materials Operations LLC
Inventor： GOODIN, Michael K. , SCHWIER, Chris E. , TRIA, JR., John J.
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公开(公告)号：EP3802924A1
公开(公告)日：2021-04-14
申请号：EP19732853.7
申请日：2019-06-07
Applicant: Ascend Performance Materials Operations LLC
Inventor： YUNG, Wai-Shing , SCHWIER, Chris E. , ORTEGA, Albert , OSBORN, Scott E.
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