公开(公告)号：US11053387B2

公开(公告)日：2021-07-06

申请号：US16641255

申请日：2018-07-27

Applicant: JIANGSU HENGLI CHEMICAL FIBRE CO., LTD.

Inventor： Hongwei Fan ,  Guanfan Jin ,  Ming Chen ,  Huailin Ren ,  Yongfeng Wang ,  Xiangming Wang

IPC: C08L67/06 ,  C08L67/02 ,  D01F6/84

Abstract: A one-step spun composite DTY and preparation method thereof are provided. The bi-profiled fiber is manufactured with two types of modified polyester of different viscosities through the steps of melting, melt metering, composite extruding, cooling, oiling, drawing, heat setting and winding. Wherein those two modified polyesters have a molecular structure including terephthalic acid segments, ethylene glycol segments and branched diol segments, and the branched diol has a structural formula of here R1 and R2 are separately selected from the linear alkylene with 1-3 carbon atoms, R3 from the alkyl with 1-5 carbon atoms, and R4 from the alkyl with 2-5 carbon atoms. The obtained one-step spun composite DTY has an elastic shrinkage rate of no less than 35%. The method presented in this invention is involved in a simple and reasonable technological process for wide application range.

公开(公告)号：US11702768B2

公开(公告)日：2023-07-18

申请号：US17787951

申请日：2020-06-10

Applicant: JIANGSU HENGLI CHEMICAL FIBRE CO., LTD.

Inventor： Hongwei Fan ,  Fangming Tang ,  Shanshui Wang ,  Lixin Yin ,  Lili Wang

IPC: D01D5/12 ,  D01D5/253 ,  D01F6/60 ,  D01F6/62 ,  D02G1/18 ,  D02G1/20 ,  D02J1/22 ,  D02J13/00 ,  D01D5/32 ,  D01D5/08 ,  D01D5/22 ,  D01D10/02 ,  D01F8/12 ,  D01F8/14 ,  D02G1/00 ,  D02G3/32

CPC classification number: D01D5/32 ,  D01D5/08 ,  D01D5/082 ,  D01D5/22 ,  D01D10/02 ,  D01F8/12 ,  D01F8/14 ,  D02G1/004 ,  D02G1/205 ,  D02G3/326 ,  D02J1/229 ,  D10B2331/02 ,  D10B2331/04 ,  D10B2401/061

Abstract: A preparation method of self-crimping elastic combined filament yarns for knitting is disclosed, wherein the combined filament yarns are extruded from the same spinneret; a first fiber-forming polymer melt is divided into two ways, one is directly extruded after distribution; and the other is extruded after distribution by side-by-side composite spinning together with a second fiber-forming polymer melt; the first fiber-forming polymer and the second fiber-forming polymer are compatible or partially compatible; on the same spinneret, a ratio of the number of spinneret holes m for direct extrusion to the number of spinneret holes n for extrusion after distribution by side-by-side composite spinning is 1:(5-10); the self-crimping elastic combined filament yarns for knitting are prepared according to specific spinning processes, wherein the combined filament yarn mainly comprises a first fiber-forming polymer monofilament and a first/second fiber-forming polymer side-by-side composite monofilament; wherein the monofilament crimping directions are randomly distributed.

公开(公告)号：US11629436B2

公开(公告)日：2023-04-18

申请号：US16638479

申请日：2018-07-27

Applicant: JIANGSU HENGLI CHEMICAL FIBRE CO., LTD.

Inventor： Hongwei Fan ,  Shanshui Wang ,  Lixin Yin ,  Lili Wang

IPC: D01D5/24 ,  D01D5/096 ,  D01F6/62 ,  D01F11/08 ,  D06M13/11 ,  D06M13/224 ,  D06M13/256 ,  D06M13/295 ,  D01D5/12 ,  D01D5/088 ,  D01D10/02 ,  D01D7/00 ,  D06M101/32

Abstract: A lightweight heat-preserving fiber and a preparation method thereof are provided, wherein the fiber is prepared by measuring, composite spinneret's extruding, cooling, oiling, drawing, heat setting and winding a polyester melt. The composite spinneret has a hollow spinning hole and a circular spinning hole. The ratio of the micropore length of hollow spinning hole to circular spinning hole equals to the ratio of the equivalent diameter of hollow spinning hole to circular spinning hole multiplies the coefficient K, and the equivalent diameter is the ratio of the cross-sectional area to the circumference of the cross-section, the coefficient K ranges from 0.97 to 1.03. The oil agent contains a crown ether, and the content of the crown ether ranges from 67.30 to 85.58 wt %. The thermal conductivity of a knitted fabric having a basis weight of 100 g/m2 prepared by lightweight heat-preserving fiber is no larger than 0.150 W/m·K.

公开(公告)号：US10465041B2

公开(公告)日：2019-11-05

申请号：US16322948

申请日：2017-06-26

Applicant: JIANGSU HENGLI CHEMICAL FIBRE CO., LTD.

Inventor： Hongwei Fan ,  Zhili Liu ,  Wengang Li ,  Fangming Tang ,  Lili Wang ,  Lixin Yin

IPC: C08G63/81 ,  C08G63/183 ,  D01F6/62 ,  D06P3/54

Abstract: A method for preparing the modified polyester. The modified polyester segments include terephthalic acid segment, ethylene glycol diol segment and branched diol segment, in which the branched diol segment refers to a diol segment in which a branch is located on a non-terminal carbon in the glycol segment and the branch is a linear carbon chain having 5 to 10 carbon atoms. The method includes preparing terephthalic acid glycol ester through the esterification of terephthalic acid and branched diol using the concentrated sulfuric acid as the catalyst. Then get ethylene terephthalate through the esterification of terephthalic acid and ethylene glycol. After stirring and mixing the two, the modified polyester can be obtained through polycondensation reaction of a low vacuum stage and a high vacuum stage using the catalyst and stabilizer.

公开(公告)号：US12221724B2

公开(公告)日：2025-02-11

申请号：US17789792

申请日：2020-06-12

Applicant: JIANGSU HENGLI CHEMICAL FIBRE CO., LTD.

Inventor： Hongwei Fan ,  Shanshui Wang ,  Lili Wang ,  Fangming Tang

IPC: D01F6/62 ,  D01D4/02 ,  D01D5/08 ,  D01D5/088 ,  D01D5/22 ,  D01D5/253 ,  D02J13/00

Abstract: A recycled polyester filament and preparation method therefor are disclosed. In the process of preparing a fiber from a recycled polyester according to the FDY process, the ring-blowing is used for cooling, and the distribution of spinneret holes on the spinneret is controlled to meet certain conditions, then the recycled polyester filament is obtained by relaxation heat treatment after a fully drawn yarn is produced. The spinneret holes are C-shaped spinneret holes and circular spinneret holes, the cross-section of the C-shaped spinneret hole is composed of an outer arc, an inner arc, and two line segments, and two endpoints of the outer arc are A and B respectively; wherein the certain conditions include: all the spinneret holes are distributed in concentric circles, and the C-shaped spinneret holes are located on the outermost circle, rotating at different angles and randomly distributed.

公开(公告)号：US11174576B2

公开(公告)日：2021-11-16

申请号：US17253623

申请日：2019-10-28

Applicant: JIANGSU HENGLI CHEMICAL FIBRE CO., LTD.

Inventor： Hongwei Fan ,  Fangming Tang ,  Shanshui Wang

IPC: D01F6/92 ,  C08G63/183 ,  C08G63/86 ,  D01F1/10

Abstract: A type of easy-to-dye degradable polyester FDY and preparing method thereof are disclosed. The method for preparing an easy-to-dye degradable polyester FDY is to prepare a modified polyester FDY from a modified polyester melt with FDY process; wherein the material is a modified polyester; wherein the modified polyester has a molecular chain structure composed of terephthalic acid segments, ethylene glycol segments, 2,2,3,4,5,5-hexamethyl-3,4-hexanediol segments and tert-butyl branched heptanediol segments; wherein the modified polyester is dispersed by solid heteropolyacid powder calcined at a 400˜700° C. temperature. The preparing method has a simple process, modifying the polyester through solid heteropolyacid, tert-butyl branched heptanediol and 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, which increases the hydrolysis rate of the polyester, improves the dyeing performance and prepares products with excellent mechanical properties.

公开(公告)号：US10961641B2

公开(公告)日：2021-03-30

申请号：US17042957

申请日：2019-10-28

Applicant: JIANGSU HENGLI CHEMICAL FIBRE CO., LTD.

Inventor： Hongwei Fan ,  Lili Wang ,  Jiangen Shen

IPC: D01F6/92 ,  D01D5/253 ,  D01F1/10 ,  D01D5/088 ,  C08G63/695 ,  C08G63/46 ,  C08G63/86 ,  C08G63/183 ,  C08K5/524 ,  C08K5/521

Abstract: A type of feather-like polyester fiber and a preparing method thereof are disclosed. The preparing method is to manufacture filament from a modified polyester through a POY process with a four-fold flat spinneret and a successive DTY processes, wherein said modified polyester is the product of the esterification and the successive polycondensation reactions of evenly mixed terephthalic acid, ethylene glycol, main-chain silicated diol and fluorinated dicarboxylic acid, and the spinneret is the one set with four-fold flat shaped orifices. The obtained fiber has a dye uptake of 89.6-93.7% when dyed at 130° C., and has an intrinsic viscosity drop of 13-20% when stored at 25° C. and R.H. 65% for 60 months. This invention is simple to apply and features a product with good dyeing and degradation performance.

公开(公告)号：US10815333B2

公开(公告)日：2020-10-27

申请号：US15744853

申请日：2016-06-12

Applicant: JIANGSU HENGLI CHEMICAL FIBRE CO., LTD.

Inventor： Hongwei Fan ,  Wengang Li ,  Yanfang Wang ,  Lili Wang ,  Damao Yang ,  Fangming Tang ,  Lixin Yin ,  Guangkun Song

IPC: C08G63/183 ,  C08G63/83 ,  D01F6/62

Abstract: A high-modulus low-shrinkage polyester industrial yarn obtained by subjecting a polyester to dissolution, washing and solid state polycondensation followed by spinning. The high-modulus low-shrinkage polyester industrial yarn has a dry heat shrinkage rate of 2.0±0.25% under test conditions of 177° C.×10 min×0.05 cN/dtex. The average value of the crystal volume Vc of the high-modulus low-shrinkage polyester industrial yarn is larger than 230 nm3. The high-modulus low-shrinkage polyester industrial yarn has a fiber modulus of ≥100 cN/dtex. The polycondensation catalyst consists of magnesium ethylene glycol and antimony ethylene glycol, which has a small thermal degradation coefficient.

公开(公告)号：US10358525B2

公开(公告)日：2019-07-23

申请号：US15744867

申请日：2016-06-12

Applicant: JIANGSU HENGLI CHEMICAL FIBRE CO., LTD.

Inventor： Hongwei Fan ,  Fangming Tang ,  Xiaoyu Wang ,  Wengang Li ,  Lili Wang ,  Shanshui Wang ,  Qianhan Liu ,  Zangzang Niu

IPC: C08G63/02 ,  C08G63/183 ,  C08G63/83 ,  C08G63/90 ,  C08G63/86 ,  C25B3/12 ,  D01F6/62 ,  C08G63/78

Abstract: A polyester obtained by the esterification of terephthalic acid and ethylene glycol and the polycondensation catalysed by a mixture of magnesium ethylene glycol and antimony ethylene glycol followed by granulation. In the polyester sections, the carboxyl end group is less than 15 mol/t, the mass percentage of oligomer is lower than 0.5%, and weight percentage of diethylene glycol is lower than 0.5%.

公开(公告)号：US11352719B2

公开(公告)日：2022-06-07

申请号：US17276155

申请日：2019-10-29

Applicant: JIANGSU HENGLI CHEMICAL FIBRE CO., LTD.

Inventor： Hongwei Fan ,  Shanshui Wang ,  Lili Wang

IPC: C07F7/08 ,  C08G63/183 ,  C08G63/695 ,  C08G77/445 ,  C08L67/02 ,  D01D5/12 ,  D01D5/16 ,  D01D7/00 ,  D01F1/07 ,  D01F6/62 ,  D02G3/46 ,  D02J1/22 ,  D02J13/00 ,  D01F6/92 ,  C08G63/80 ,  C08G63/86 ,  D01D5/096 ,  D01D5/098 ,  D01D10/02 ,  D01F1/10 ,  D02G3/02 ,  D01D5/088 ,  C01G30/00

Abstract: A type of polyester yarn for an industrial sewing thread and preparing method thereof are provided. The preparing method is composed of a viscosity enhancing by a solid state polycondensation and a melt spinning for a modified polyester, and the modified polyester is a product of esterification and polycondensation of evenly mixed terephthalic acid, ethylene glycol, tert-butyl branched dicarboxylic acid, trimethylsilyl branched diol and a doped Sb2O3 powder, wherein the tert-butyl branched dicarboxylic acid is selected from the group consisting of 5-tert-butyl-1,3-benzoic acid, 2-tert-butyl-1,6-hexanedioic acid, 3-tert-butyl-1,6-hexanedioic acid and 2,5-di-tert-butyl-1,6-hexanedioic acid. Moreover, the modified polyester is dispersed with a doped ZrO2 powder. An obtained fiber has an intrinsic viscosity drop of 23-28% when stored at 25° C. and R.H. 65% for 60 months.