Patents by Inventor Changli LU
Changli LU has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11530294Abstract: The present invention discloses a polylactic acid composite and use thereof. The polylactic acid composite includes the following components: (A) 89 to 98 parts by weight of polylactic acid; (B) 1 to 4 parts by weight of talcum powder; and (C) 1 to 7 parts by weight of a plasticizer. In the component (A), the polylactic acid has a polydispersity index P satisfying the following relationship: 1.55?P?2.02. In the component (B), the talcum powder has a particle size D(50) satisfying: 1 ?m?D(50)?2.6 ?m. In the component (C), the plasticizer has a relative molecular weight M satisfying: 180?M?670. Through research, the present invention has unexpectedly discovered that by using the polylactic acid having the polydispersity index P satisfying the relationship 1.55?P?2.Type: GrantFiled: June 26, 2018Date of Patent: December 20, 2022Assignees: KINGFA SCI. & TECH. CO., LTD., ZHUHAI WANGO CHEMICAL CO., LTD.Inventors: Changli Lu, Zhimin Yuan, Tongmin Cai, Xianbo Huang, Xiangbin Zeng, Jian Jiao, Kai Xiong, Hui Yang, Kaijin Mai, Xueteng Dong, Shihua He
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Patent number: 11453776Abstract: The present invention relates to a polylactic acid 3D printing material and a preparation method thereof, which belong to the technical field of polymer materials. The polylactic acid 3D printing material of the present invention comprises the following preparation raw materials in parts by weight: (a) 40-95 parts of crystalline or semi-crystalline polylactic acid, (b) 5-60 parts of noncrystalline polylactic acid, and (c) 0-1.0 parts of a processing aid. In the polylactic acid 3D printing material, a weight of dextral polylactic acid represents 0.5%-8% of a total weight of the polylactic acid. According to the present invention, a polylactic acid 3D printing material with a good aging resistance property can be obtained, by selecting and using two kinds of polylactic acids with different optical purities as raw materials, rationally distributing the proportional relationship between the two, and defining the content of dextral polylactic acid.Type: GrantFiled: May 28, 2019Date of Patent: September 27, 2022Assignee: KINGFA SCI. & TECH. CO., LTD.Inventors: Kai Xiong, Zhimin Yuan, Tongmin Cai, Xianbo Huang, Xiangbin Zeng, Jian Jiao, Changli Lu, Hui Yang, Kaijin Mai, Xueteng Dong, Weida Ou
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Publication number: 20220204753Abstract: Disclosed in the present invention is a semiaromatic polyester, a preparation method and application thereof. Having a specific segment length and carboxyl group content, the semiaromatic polyester provides a balance of degradation rate and mechanical properties, compared with known semiaromatic polyesters. The 30-day weight retention of the semiaromatic polyester obtained in the present invention may be contained to from 45 to 70%.Type: ApplicationFiled: December 29, 2021Publication date: June 30, 2022Applicant: JIANGSU KINGFA SCI. & TECH. ADVANCED MATERIALS CO., LTD.Inventors: Chuanhui ZHANG, Xianbo HUANG, Nanbiao YE, Xiangbin ZENG, Changli LU, Tongmin CAI
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Patent number: 11370909Abstract: The present invention discloses a biodegradable polyester composition, wherein the biodegradable polyester composition comprises the following components in parts by weight: i) 58 to 80 parts by weight of an aliphatic-aromatic copolyester; ii) 20 to 32 parts by weight of starch; and iii) 0 to 10 parts by weight of a processing agent. The present invention unexpectedly found by research that by using an aliphatic-aromatic copolyester in which an amount of aromatic carboxylic acid accounts for a total amount of diacid is 44 mol % to 48 mol % as a matrix resin, where the aliphatic-aromatic copolyester has a crystallization peak width D of 5° C. to 16° C.Type: GrantFiled: May 24, 2019Date of Patent: June 28, 2022Assignee: KINGFA SCI. & TECH. CO., LTD.Inventors: Chunping Ouyang, Jian Jiao, Kaijin Mai, Xueteng Dong, Hui Yang, Weida Qu, Kai Xiong, Changli Lu, Xiangbin Zeng, Tongmin Cai, Xianbo Huang
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Publication number: 20210363344Abstract: The present invention discloses a polylactic acid composite and use thereof. The polylactic acid composite includes the following components: i) 50-85 parts by weight of polylactic acid; ii) 8 to 35 parts by weight of an inorganic filler; and iii) 0 to 8 parts by weight of a plasticizer; wherein the polylactic acid composite has an end carboxyl content of 12 to 51 molKOH/t. The present invention unexpectedly discovered through research that, by controlling an end carboxyl content of the polylactic acid composite within a range of 12 to 51 molKOH/t, the polylactic acid composite, under a condition of 60° C. and 60% humidity, with a test time of 30 days, has a ratio of a mass melt index MFIt=30 to an initial mass melt index MFIt=0 satisfying 3.5<?=MFIt=30/MFIt=0<5.1, which indicates that under the test conditions, the product has slow aging degradation, and the polylactic acid composite has a biodegradation rate greater than 90% after 12 weeks in the case where a thickness is 2.Type: ApplicationFiled: June 26, 2018Publication date: November 25, 2021Applicant: Kingfa Csi, & Tech. Co. Ltd.Inventors: Changli LU, Zhimin YUAN, Tongmin CAI, Xianbo HUANG, Xiangbin ZENG, Jian JIAO, Kai XIONG, Hui YANG, Kaijin MAI, Xueteng DONG
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Patent number: 11149113Abstract: A biodegradable polyester and use thereof includes components: A) acid components containing following repeating units: 40 to 48 mol % of terephthalic acid A1; 38.5 to 50 mol % of sebacic acid A2; and 2 to 20 mol % of an aliphatic dibasic acid A3 with a carbon chain length of 6 or less; B) butanediol. In the case of low content of the terephthalic acid unit, by introducing the aliphatic dibasic acid unit with the carbon chain length of 6 or less, mechanical properties of the material can be significantly improved, and the mechanical property retention is better especially when stored in a humid environment.Type: GrantFiled: June 26, 2018Date of Patent: October 19, 2021Assignee: KINGFA SCI. & TECH. CO., LTD.Inventors: Weiwei Wang, Zhimin Yuan, Tongmin Cai, Xianbo Huang, Xiangbin Zeng, Nanbiao Ye, Zhilong Guo, Changli Lu
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Patent number: 11149112Abstract: The present invention relates to a biodegradable polyester and use thereof, including components: A) acid components containing following repeating units: 50 to 58 mol % of terephthalic acid A1; 30 to 40 mol % of sebacic acid A2; and 2 to 20 mol % of an aliphatic dibasic acid A3 with a carbon chain length of 6 or less; B) butanediol. In the present invention, in the case of a high content of the terephthalic acid, the biodegradable polyester prepared by introducing an aliphatic dibasic acid unit having a carbon chain length of 6 or less can satisfy the degradation performance and rigidity and improve the tenacity of the material simultaneously.Type: GrantFiled: June 26, 2018Date of Patent: October 19, 2021Assignee: KINGFA SCI. & TECH. CO., LTD.Inventors: Weiwei Wang, Zhimin Yuan, Tongmin Cai, Xianbo Huang, Xiangbin Zeng, Nanbiao Ye, Zhilong Guo, Changli Lu
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Publication number: 20210070928Abstract: A biodegradable polyester and use thereof includes components: A) acid components containing following repeating units: 40 to 48 mol % of terephthalic acid A1; 38.5 to 50 mol % of sebacic acid A2; and 2 to 20 mol % of an aliphatic dibasic acid A3 with a carbon chain length of 6 or less; B) butanediol. In the case of low content of the terephthalic acid unit, by introducing the aliphatic dibasic acid unit with the carbon chain length of 6 or less, mechanical properties of the material can be significantly improved, and the mechanical property retention is better especially when stored in a humid environment.Type: ApplicationFiled: June 26, 2018Publication date: March 11, 2021Applicant: KINGFA SCI. & TECH. CO., LTD.Inventors: Weiwei WANG, Zhimin YUAN, Tongmin CAI, Xianbo HUANG, Xiangbin ZENG, Nanbiao Ye, Zhilong GUO, Changli LU
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Publication number: 20210061947Abstract: The present invention relates to a biodegradable polyester and use thereof, including components: A) acid components containing following repeating units: 50 to 58 mol % of terephthalic acid A1; 30 to 40 mol % of sebacic acid A2; and 2 to 20 mol % of an aliphatic dibasic acid A3 with a carbon chain length of 6 or less; B) butanediol. In the present invention, in the case of a high content of the terephthalic acid, the biodegradable polyester prepared by introducing an aliphatic dibasic acid unit having a carbon chain length of 6 or less can satisfy the degradation performance and rigidity and improve the tenacity of the material simultaneously.Type: ApplicationFiled: June 26, 2018Publication date: March 4, 2021Applicant: KINGFA SCI. & TECH. CO., LTD.Inventors: Weiwei WANG, Zhimin YUAN, Tongmin CAI, Xianbo HUANG, Xiangbin ZENG, Nanbiao Ye, Zhilong GUO, Changli LU
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Publication number: 20210061989Abstract: The present invention discloses a biodegradable polyester composition, wherein the biodegradable polyester composition comprises the following components in parts by weight: i) 58 to 80 parts by weight of an aliphatic-aromatic copolyester; ii) 20 to 32 parts by weight of starch; and iii) 0 to 10 parts by weight of a processing agent. The present invention unexpectedly found by research that by using an aliphatic-aromatic copolyester in which an amount of aromatic carboxylic acid accounts for a total amount of diacid is 44 mol % to 48 mol % as a matrix resin, where the aliphatic-aromatic copolyester has a crystallization peak width D of 5° C. to 16° C.Type: ApplicationFiled: May 24, 2019Publication date: March 4, 2021Inventors: Chunping OUYANG, Jian JIAO, Kaijin MAI, Xueteng DONG, Hui YANG, Weida QU, Kai XIONG, Changli LU, Xiangbin ZENG, Tongmin CAI, Xianbo HUANG
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Publication number: 20210024745Abstract: The present invention relates to a polylactic acid 3D printing material and a preparation method thereof, which belong to the technical field of polymer materials. The polylactic acid 3D printing material of the present invention comprises the following preparation raw materials in parts by weight: (a) 40-95 parts of crystalline or semi-crystalline polylactic acid, (b) 5-60 parts of noncrystalline polylactic acid, and (c) 0-1.0 parts of a processing aid. In the polylactic acid 3D printing material, a weight of dextral polylactic acid represents 0.5%-8% of a total weight of the polylactic acid. According to the present invention, a polylactic acid 3D printing material with a good aging resistance property can be obtained, by selecting and using two kinds of polylactic acids with different optical purities as raw materials, rationally distributing the proportional relationship between the two, and defining the content of dextral polylactic acid.Type: ApplicationFiled: May 28, 2019Publication date: January 28, 2021Applicant: KINGFA SCI. & TECH. CO., LTD.Inventors: Kai XIONG, Zhimin YUAN, Tongmin CAI, Xianbo HUANG, Xiangbin ZENG, Jian JIAO, Changli LU, Hui YANG, Kaijin MAI, Xueteng DONG, Weida OU
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Publication number: 20200291176Abstract: The present invention discloses a polylactic acid composite and use thereof. The polylactic acid composite includes the following components: (A) 89 to 98 parts by weight of polylactic acid; (B) 1 to 4 parts by weight of talcum powder; and (C) 1 to 7 parts by weight of a plasticizer. In the component (A), the polylactic acid has a polydispersity index P satisfying the following relationship: 1.55?P?2.02. In the component (B), the talcum powder has a particle size D(50) satisfying: 1 ?m?D(50)?2.6 ?m. In the component (C), the plasticizer has a relative molecular weight M satisfying: 180?M?670. Through research, the present invention has unexpectedly discovered that by using the polylactic acid having the polydispersity index P satisfying the relationship 1.55?P?2.Type: ApplicationFiled: June 26, 2018Publication date: September 17, 2020Applicants: Kingfa Sci. & Tech. Co., Ltd., Zhuhai Wango Chemical Co., Ltd.Inventors: Changli LU, Zhimin YUAN, Tongmin CAI, Xianbo HUANG, Xiangbin ZENG, Jian JIAO, Kai XIONG, Hui YANG, Kaijin MAI, Xueteng DONG, Shihua HE
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Patent number: 10633514Abstract: The present invention discloses a PBAT resin composition comprising: (a) Poly (butyleneadipate-co-terephthalate); (b) a cyclic esterified product having a structure represented by the formula (I) Wherein the content by weight of the cyclic esterified product is from 10 ppm to 2000 ppm, based on the total weight of the PBAT resin composition. In the present invention, the service life of the PBAT resin composition can be greatly extended by adding cyclic esterified product in the PBAT resin composition and controlling the content of the cyclic esterified product in the composition in the range of 10 ppm to 2000 ppm. And after boiled for 240 hours in 95% ethanol at 40° C., the film produced from blowing or the articles produced from injection have less surface precipitates, with excellent surface appearance properties.Type: GrantFiled: August 30, 2016Date of Patent: April 28, 2020Assignee: KINGFA SCI. & TECH. CO., LTD.Inventors: Changli Lu, Zhimin Yuan, Tongmin Cai, Xianbo Huang, Xiangbin Zeng, Jian Jiao, Renxu Yuan, Yuke Zhong, Kai Xiong, Hui Yang, Kaijin Mai, Xueteng Dong
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Patent number: 10494521Abstract: A biodegradable polyester composition based on a total weight of the biodegradable polyester composition, including a weight content of a cyclic ester compound having a structure shown as formula (I), which is 100 ppm-950 ppm; and based on the total weight of the biodegradable polyester composition, a weight content of cyclopentanone is 0.5 ppm-85 ppm is provided. The cyclic ester compound and cyclopentanone is added into the composition and controlling the content of the cyclic ester compound and the content of cyclopentanone in a certain range in the composition to realize an anti-thermal oxidative aging property of the biodegradable polyester composition. In addition, a film is prepared by blow molding or a part is prepared by injection molding after being digested with 95% ethanol at 40° C. for 240 hours.Type: GrantFiled: February 24, 2017Date of Patent: December 3, 2019Assignees: KINGFA SCI. & TECH. CO., LTD., ZHUHAI WANGO CHEMICAL CO., LTD., TIANJIN KINGFA NEW MATERIAL CO., LTD.Inventors: Changli Lu, Zhimin Yuan, Tongmin Cai, Xianbo Huang, Xiangbin Zeng, Jian Jiao, Renxu Yuan, Yuke Zhong, Kai Xiong, Hui Yang, Kaijin Mai, Xueteng Dong
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Patent number: 10479887Abstract: The present invention discloses a biodegradable polyester composition, wherein based on a total weight of the biodegradable polyester composition, a weight content of glycidyl methacrylate is 0.05 ppm-10 ppm. In the present invention, by adding a trace amount of glycidyl methacrylate into a chosen formula of the biodegradable polyester composition and controlling the weight content of glycidyl methacrylate which finally remains in the biodegradable polyester composition as 0.05 ppm-10 ppm, a compatibility between aliphatic-aromatic polyester and polylactic acid in the biodegradable polyester composition can be greatly enhanced, which enables the biodegradable polyester composition to have excellent surface property of film material, and no fisheye occurs on the film material because of a fluctuation of processing technique.Type: GrantFiled: March 1, 2017Date of Patent: November 19, 2019Assignees: Kingfa Sci. & Tech. Co., Ltd., Zhuhai Wango Chemical Co., Ltd.Inventors: Changli Lu, Zhimin Yuan, Tongmin Cai, Xianbo Huang, Xiangbin Zeng, Jian Jiao, Renxu Yuan, Yuke Zhong, Kai Xiong, Hui Yang, Kaijin Mai, Xueteng Dong
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Patent number: 10472515Abstract: The present invention discloses a biodegradable polyester composition, wherein based on a total weight of the biodegradable polyester composition, a weight content of styrene is 0.1 ppm-30 ppm. When the weight content of styrene which is added into a chosen formula of the biodegradable polyester composition based on the total weight of the biodegradable polyester composition is controlled as 0.1 ppm-30 ppm, the present invention may guarantee the biodegradable polyester composition with excellent transmittance and haze effect, and meanwhile may guarantee the biodegradable polyester composition with suitable UV resistance function, without reducing a degradation rate of the biodegradable polyester composition.Type: GrantFiled: March 1, 2017Date of Patent: November 12, 2019Assignees: Kingfa Sci. & Tech. Co., Ltd., Zhuhai Wango Chemical Co., Ltd.Inventors: Changli Lu, Zhimin Yuan, Tongmin Cai, Xianbo Huang, Xiangbin Zeng, Jian Jiao, Renxu Yuan, Yuke Zhong, Kai Xiong, Hui Yang, Kaijin Mai, Xueteng Dong
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Patent number: 10435556Abstract: A biodegradable polyester composition based on a total weight of the biodegradable polyester composition, including a weight content of a cyclic ester compound having a structure shown as formula (I) which is 100 ppm-950 ppm; and based on the total weight of the biodegradable polyester composition, a weight content of tetrahydrofuran is 3 ppm-200 ppm is provided. The cyclic ester compound and tetrahydrofuran is added into the composition and controlling the content of the cyclic ester compound and the content of tetrahydrofuran in a certain range in the composition to realize an anti-thermal oxidative aging property of the biodegradable polyester composition. In addition, a film is prepared by blow molding or a part is prepared by injection molding after being digested with 95% ethanol at 40° C. for 240 hours.Type: GrantFiled: February 24, 2017Date of Patent: October 8, 2019Assignees: KINGFA SCI. & TECH. CO., LTD., ZHUHAI WANGO CHEMICAL CO., LTD., TIANJIN KINGFA NEW MATERIAL CO., LTD.Inventors: Changli Lu, Zhimin Yuan, Tongmin Cai, Xianbo Huang, Xiangbin Zeng, Jian Jiao, Renxu Yuan, Yuke Zhong, Kai Xiong, Hui Yang, Kaijin Mai, Xueteng Dong
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Patent number: 10400100Abstract: A biodegradable polyester composition based on a total weight of the biodegradable polyester composition, including a weight content of tetrahydrofuran, which is 3 ppm-200 ppm; and based on the total weight of the biodegradable polyester composition, a weight content of cyclopentanone is 0.5 ppm-85 ppm is provided. The tetrahydrofuran and cyclopentanone is added into the composition and controlling the content of tetrahydrofuran and the content of cyclopentanone in a certain range in the composition to realize printing performance. Moreover, when a velocity of film blowing is 176 Kg/h, a range of a film thickness is less than 0.2 ?m and a relative deviation of the film thickness is less than 1%.Type: GrantFiled: February 24, 2017Date of Patent: September 3, 2019Assignees: KINGFA SCI. & TECH. CO., LTD., ZHUHAI WANGO CHEMICAL CO., LTD., TIANJIN KINGFA NEW MATERIAL CO., LTD.Inventors: Changli Lu, Zhimin Yuan, Tongmin Cai, Xianbo Huang, Xiangbin Zeng, Jian Jiao, Renxu Yuan, Yuke Zhong, Kai Xiong, Hui Yang, Kaijin Mai, Xueteng Dong
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Publication number: 20180362729Abstract: The present invention discloses a PBAT resin composition comprising: (a) Poly (butyleneadipate-co-terephthalate); (b) a cyclic esterified product having a structure represented by the formula (I) Wherein the content by weight of the cyclic esterified product is from 10 ppm to 2000 ppm, based on the total weight of the PBAT resin composition. In the present invention, the service life of the PBAT resin composition can be greatly extended by adding cyclic esterified product in the PBAT resin composition and controlling the content of the cyclic esterified product in the composition in the range of 10 ppm to 2000 ppm. And after boiled for 240 hours in 95% ethanol at 40° C., the film produced from blowing or the articles produced from injection have less surface precipitates, with excellent surface appearance properties.Type: ApplicationFiled: August 30, 2016Publication date: December 20, 2018Applicant: KINGFA SCI. & TECH. CO., LTD.Inventors: Changli LU, Zhimin YUAN, Tongmin CAI, Xianbo HUANG, Xiangbin ZENG, Jian JIAO, Renxu YUAN, Yuke ZHONG, Kai XIONG, Hui YANG, Kaijin MAI, Xueteng DONG
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Publication number: 20180298187Abstract: The present invention discloses a biodegradable polyester composition, wherein based on a total weight of the biodegradable polyester composition, a weight content of styrene is 0.1 ppm-30 ppm. When the weight content of styrene which is added into a chosen formula of the biodegradable polyester composition based on the total weight of the biodegradable polyester composition is controlled as 0.1 ppm-30 ppm, the present invention may guarantee the biodegradable polyester composition with excellent transmittance and haze effect, and meanwhile may guarantee the biodegradable polyester composition with suitable UV resistance function, without reducing a degradation rate of the biodegradable polyester composition.Type: ApplicationFiled: March 1, 2017Publication date: October 18, 2018Applicants: Kingfa Sci. & Tech. Co., Ltd., Zhuhai Wango Chemical Co., Ltd.Inventors: Changli Lu, Zhimin Yuan, Tongmin Cai, Xianbo Huang, Xiangbin Zeng, Jian Jiao, Renxu Yuan, Yuke Zhong, Kai Xiong, Hui Yang, Kaijin Mai, Xueteng Dong