Patents Assigned to Cathay (Jinxiang) Biomaterial Co., Ltd.
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Patent number: 11806670Abstract: The present disclosure provides a system for extracting long chain dicarboxylic acid, the system comprising: a primary membrane filtration unit, a first crystallization unit, a first separation unit, a first dissolution tank, a secondary membrane filtration unit, a second separation unit, a second crystallization unit and a third separation unit. By the system for extracting long chain dicarboxylic acid of an embodiment of the present invention, the resulted long chain dicarboxylic acid product has a high purity, very low and even no residual alkane residue, and organic solvent-free.Type: GrantFiled: December 15, 2021Date of Patent: November 7, 2023Assignees: Cathay Biotech Inc., CIBT America Inc., Cathay (Jinxiang) Biomaterial Co., Ltd.Inventors: Chen Yang, Shuhua Zhang, Yufeng Yang, Xiucai Liu
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Publication number: 20230012061Abstract: The present disclosure provides a polyamide 5X staple fiber, a preparation method and use thereof. The polyamide 5X staple fiber has a denier of 8.0-30.0D, a breaking strength of 2.0-6.0 cN/dtex, and an elongation at break of 30-100%. The polyamide 5X staple fiber has good mechanical properties and softness, and a blended wool yarn for manufacturing carpets with good mechanical properties, dyeability, and wear resistance can be obtained by using the polyamide 5X staple fiber.Type: ApplicationFiled: January 15, 2020Publication date: January 12, 2023Applicants: Cathay Biotech Inc., CIBT America Inc., Cathay (Jinxiang) Biomaterial Co., Ltd.Inventors: Chaoxu Sun, Xiaochen Xu, Xiucai Liu
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Publication number: 20220105469Abstract: The present disclosure provides a system for extracting long chain dicarboxylic acid, the system comprising: a primary membrane filtration unit, a first crystallization unit, a first separation unit, a first dissolution tank, a secondary membrane filtration unit, a second separation unit, a second crystallization unit and a third separation unit. By the system for extracting long chain dicarboxylic acid of an embodiment of the present invention, the resulted long chain dicarboxylic acid product has a high purity, very low and even no residual alkane residue, and organic solvent-free.Type: ApplicationFiled: December 15, 2021Publication date: April 7, 2022Applicants: Cathay Biotech Inc., CIBT America Inc., Cathay (Jinxiang) Biomaterial Co., Ltd.Inventors: Chen Yang, Shuhua Zhang, Yufeng Yang, Xiucai Liu
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Publication number: 20220106249Abstract: The present disclosure provides a method for extracting long chain dicarboxylic acid, the method comprising: (1) subjecting a long chain dicarboxylic acid fermentation broth to a primary membrane filtration treatment to give a first filtrate; subjecting the first filtrate to decolorization, crystallization, and solid-liquid separation to give a first solid; (2) redissolving the first solid in water to form a solution; subjecting the solution to decolorization, crystallization by acidification, and solid-liquid separation to give a second solid. By the method, the resulted long chain dicarboxylic acid product has a high purity and no residual organic solvent.Type: ApplicationFiled: December 15, 2021Publication date: April 7, 2022Applicants: Cathay Biotech Inc., CIBT America Inc., Cathay (Jinxiang) Biomaterial Co., Ltd.Inventors: Chen Yang, Shuhua Zhang, Yufeng Yang, Xiucai Liu
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Publication number: 20220080357Abstract: The present disclosure provides a system for refining long chain dicarboxylic acid, comprising: a first membrane filtration unit, for a first membrane filtration of a long chain dicarboxylic acid fermentation broth or a treated liquid therefrom; a first decolorization unit, for carrying out a first decolorization treatment to the filtrate obtained after the membrane filtration; a first acidification/crystallization unit, for carrying out a first acidification/crystallization of a filtrate obtained after the membrane filtration to give a solid-liquid mixture; a first separation unit, for a solid-liquid separation of the solid-liquid mixture; a drying unit, for drying the solid separated by the separation unit to give a first solid. By using the refining system according to the present disclosure, the purity of the obtained product is high, and the disadvantages such as poor quality of the product obtained by crystallization from a solvent and environment pollution caused by a solvent can be overcome.Type: ApplicationFiled: October 22, 2021Publication date: March 17, 2022Applicants: Cathay Biotech Inc., CIBT America Inc., Cathay (Jinxiang) Biomaterial Co., Ltd.Inventors: Chen Yang, Bingbing Qin, Yufeng Yang, Kai Wang, Xiucai Liu
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Patent number: 11229881Abstract: The present disclosure provides a method and a system for extracting long chain dicarboxylic acid, the method comprising: (1) subjecting a long chain dicarboxylic acid fermentation broth to a primary membrane filtration treatment to give a first filtrate; subjecting the first filtrate to decolorization, acidification/crystallization, and solid-liquid separation treatments to give a first solid; (2) mixing the first solid, a base and water to form a solution; subjecting the solution to a secondary membrane filtration treatment to give a second filtrate; subjecting the second filtrate to decolorization, acidification/crystallization, and solid-liquid separation treatments to give a second solid; and (3) mixing the second solid and water to form a mixture; subjecting the mixture to a thermostatic treatment at 105-150° C., followed by cooling for crystallization and solid-liquid separation treatment.Type: GrantFiled: May 29, 2020Date of Patent: January 25, 2022Assignees: Cathay Biotech Inc., CIBT America Inc., Cathay (Jinxiang) Biomaterial Co., Ltd.Inventors: Chen Yang, Shuhua Zhang, Yufeng Yang, Xiucai Liu
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Patent number: 11155512Abstract: The present disclosure provides a method and a system for refining long chain dicarboxylic acid, said method comprising the following steps: (1) subjecting a long chain dicarboxylic acid fermentation broth or a treated liquid therefrom to a membrane filtration, an acidification/crystallization, a solid-liquid separation and drying to give a long chain dicarboxylic acid crude product; (2) subjecting the long chain dicarboxylic acid crude product to a vacuum distillation to give the long chain dicarboxylic acid product; wherein the pressure in the vacuum distillation is ?100 Pa. By using the refining method according to the present disclosure, the procedure is simplified, and the purity of the obtained product is high, and the disadvantages such as poor quality of the product obtained by crystallization from a solvent and environment pollution caused by a solvent can be overcome.Type: GrantFiled: May 29, 2020Date of Patent: October 26, 2021Assignees: Cathay Biotech Inc., CIBT America Inc., Cathay (Jinxiang) Biomaterial Co., Ltd.Inventors: Chen Yang, Bingbing Qin, Yufeng Yang, Kai Wang, Xiucai Liu