公开(公告)号：US12227886B2

公开(公告)日：2025-02-18

申请号：US16978263

申请日：2019-03-06

Applicant: LENZING AKTIENGESELLSCHAFT

Inventor： Martina Opietnik ,  Verena Silbermann ,  Andrea Borgards

IPC: D04H3/013 ,  D01D5/06 ,  D01F1/02 ,  D01F2/08

Abstract: The present invention provides a lyocell fiber with increased water retention value and decreased crystallinity as well as a method for producing same and products comprising same.

公开(公告)号：US11898273B2

公开(公告)日：2024-02-13

申请号：US16978253

申请日：2019-03-05

Applicant: LENZING AKTIENGESELLSCHAFT

Inventor： Verena Silbermann ,  Martina Opietnik

IPC: D01F2/08 ,  D21H13/08

CPC classification number: D01F2/08 ,  D21H13/08

Abstract: The present invention relates to a cellulosic fiber of the lyocell genus. The fiber according to the invention has the following properties:



a) the fiber has a content of hemicellulose of 5 wt. % or more
b) the fiber is characterized by the Hoeller factors F1 and F2 as follows:
Hoeller factor F1≥0.7+x and ≤1.3+x
Hoeller factor F2≥0.75+(x*6) and ≤3.5+(x*6)
wherein
x is 0.5 if the fiber does not contain a matting agent and
x is 0 if the fiber does contain a matting agent, and
if x is 0.5, the fiber is essentially free from any incorporation agent.

公开(公告)号：US20210010163A1

公开(公告)日：2021-01-14

申请号：US16978220

申请日：2019-03-06

Applicant: LENZING AKTIENGESELLSCHAFT

Inventor： Martina Opietnik ,  Verena Silbermann

IPC: D01F2/06 ,  D21H27/00 ,  D21H27/08 ,  D21H13/08 ,  D04H1/4258 ,  D04H3/013

Abstract: The present invention provides a lyocell fiber with increased tendency to fibrillate, requiring a time of less than 80 minutes to obtain a 50° SR value according to ISO 5267-1: 1999 while the reduction of the working capacity [c N/tex*¾] at the 50° SR value is less than 50%, as well as a method for producing same and products comprising same.

公开(公告)号：US20210002825A1

公开(公告)日：2021-01-07

申请号：US16978340

申请日：2019-03-06

Applicant: LENZING AKTIENGESELLSCHAFT

Inventor： Verena Silbermann ,  Martina Opietnik ,  Gabrielle Schild ,  Susanne Moderl ,  Magdalena Korbler

IPC: D21C9/00 ,  D01F2/30 ,  D21H11/16 ,  D21H13/08

Abstract: The present invention describes special cellulose compositions that allow a lyocell fiber with a reduced cellulose content to be produced on a stable industrial scale, as well as the lyocell fiber produced from it.

公开(公告)号：US20210002802A1

公开(公告)日：2021-01-07

申请号：US16978263

申请日：2019-03-06

Applicant: LENZING AKTIENGESELLSCHAFT

Inventor： Martina Opietnik ,  Verena Silbermann ,  Andrea Borgards

IPC: D04H3/013 ,  D01F1/02 ,  D01F2/08 ,  D01D5/06

Abstract: The present invention provides a lyocell fiber with increased water retention value and decreased crystallinity as well as a method for producing same and products comprising same.