公开(公告)号：US20210024446A1

公开(公告)日：2021-01-28

申请号：US17039165

申请日：2020-09-30

申请人： CATHAY BIOTECH INC. ,  CIBT AMERICA, INC.

发明人： Bingbing QIN ,  Yufeng YANG ,  Xiucai LIU

IPC分类号： C07C51/43 ,  C07C55/21 ,  C12P7/64 ,  C07C51/02 ,  C07C51/42 ,  C07C51/347 ,  C12P7/44

摘要： The present disclosure provides method for isolating a long chain dicarboxylic acid such as a substantially pure or pure long chain dicarboxylic acid from a fermentation broth containing microbial cells.

公开(公告)号：US20240270906A1

公开(公告)日：2024-08-15

申请号：US18567921

申请日：2022-01-14

申请人： CATHAY BIOTECH INC. ,  CIBT AMERICA INC. ,  CATHY (JINXIANG) BIOMATERIAL CO., LTD.

发明人： Bingbing QIN ,  Chaoxu SUN ,  Yuanyan GAO ,  Xiucai LIU

IPC分类号： C08G69/36 ,  C08G69/04 ,  C08G69/28 ,  D01D5/088 ,  D01F6/60 ,  D02G3/02 ,  D02G3/34

CPC分类号： C08G69/36 ,  C08G69/04 ,  C08G69/28 ,  D01D5/088 ,  D01F6/60 ,  D02G3/02 ,  D02G3/34 ,  D10B2331/02 ,  D10B2401/04 ,  D10B2401/063

摘要： The present disclosure provides a polyamide resin and a preparation method therefor, a composition, and a fiber product. The polyamide comprises diamine structural units and diacid structural units, wherein 90 mol % or more of the diacid structural units are derived from adipic acid, 90 mol % or more of the diamine structural units are derived from 1,5-pentanediamine, and the polyamide resin contains a water-extractable substance in a content of 0.7 wt. % or less. The water-extractable substance has a number average molecular weight of 2000 or less. The preparation method of the polyamide resin of the present disclosure is simple without using large-scale equipment, and the process parameters thereof are easy to control, thereby facilitating mass production thereof. The polyamide resin of the present disclosure has a long spinneret wipe cycle time and less broken filament times, and the obtained fiber has less broken filaments, low yarn unevenness, less dyed dark grain, a good dyeing effect, and an excellent elongation at break, breaking strength and a lower boiling water shrinkage, a high spinning yield and a high dyeing yield.

公开(公告)号：US20220371982A1

公开(公告)日：2022-11-24

申请号：US17873927

申请日：2022-07-26

申请人： CATHAY BIOTECH INC. ,  CIBT AMERICA INC.

发明人： Bingbing QIN ,  Yufeng YANG ,  Xiucai LIU

IPC分类号： C07C51/43 ,  C07C55/21 ,  C12P7/6409 ,  C07C51/02 ,  C07C51/42 ,  C07C51/347 ,  C12P7/44 ,  B01D17/02

摘要： The present disclosure provides methods for isolating a long chain dicarboxylic acid such as a substantially pure or pure long chain dicarboxylic acid from a fermentation broth containing microbial cells.