Patents by Inventor Qianfa Liu
Qianfa Liu 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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Publication number: 20240294731Abstract: A resin composition and the use thereof. The resin composition comprises the following components, in percentages by weight: 40-70% of a crosslinkable and curable resin and 30-60% of a filler. The filler is silicon dioxide prepared by means of an organosilicone hydrolysis method; the average particle size D50 of the silicon dioxide is 0.1-3 ?m; and the particle size ratio D100:D10 of the silicon dioxide is less than or equal to 2.5. By means of the composition, a prepared adhesive film and resin-coated copper foil have a higher elongation rate, a higher peel strength, low CTE, low Df, better drilling processability and higher electrical strength. A finer line processing capability can be achieved, which can be applied to a printed circuit board material of a multilayer laminate, in particular a printed circuit board material of a multilayer laminate of thin lines.Type: ApplicationFiled: July 27, 2022Publication date: September 5, 2024Inventors: Qing WANG, Qianfa LIU, Dongliang LIU, Jinchao DONG, Songgang CHAI, Yongjing XU, Yanhua ZHANG
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Publication number: 20240287282Abstract: The present invention provides a resin composition and an application thereof, the resin composition comprising the following components by weight percentage: 15-39% cross-linkable curable resin and 61-85% filler, the filler being silicon dioxide prepared by means of organosilicon hydrolysis, the average particle diameter D50 of the silicon dioxide being 0.1-3 ?m, the ratio of D100:D10 thereof being less than or equal to 2.5, and the purity of the silicon dioxide being greater than 99.9%. The resin composition of the present invention can make prepared adhesive films and resin-coated copper foils have relatively high tensile strength and peel strength, relatively good drilling processability, controllable fluidity, good filling ability, and higher electric strength, and can achieve finer line processing ability; it is a printed circuit board material applicable to multilayer laminates, especially a printed circuit board material for multilayer laminates of thin lines.Type: ApplicationFiled: July 27, 2022Publication date: August 29, 2024Inventors: Naidong SHE, Qianfa LIU, Zengbiao HUANG, Yongjing XU, Songgang CHAI, Yanhua ZHANG
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Patent number: 11945924Abstract: The present invention relates to a fluorine-containing resin composition, and a resin vanish, a fluorine-containing dielectric sheet, a laminate, a copper clad laminate and a printed circuit board containing the same. The fluorine-containing resin composition comprises 30 wt. %-70 wt. % of a fluorine-containing polymer, 30 wt. %-70 wt. % of an inorganic filler which includes the following particle size distribution: D10 is greater than 1.5 ?m; and D50 is 10-15 ?m. In the present invention, the selection of an inorganic filler with a specific particle size distribution can ensure that the boards prepared by the fluorine-containing resin composition have excellent dielectric properties and voltage resistance performance, even if the inorganic filler is added in a large amount.Type: GrantFiled: December 17, 2020Date of Patent: April 2, 2024Assignee: SHENGYI TECHNOLOGY CO., LTD.Inventors: Songgang Chai, Qianfa Liu, Liangpeng Hao, Wei Liang
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Publication number: 20240010810Abstract: A magnetic dielectric resin composition, and a prepreg and a copper clad laminate comprising same. The magnetic dielectric resin composition comprises a resin and a magnetic filler. The absolute value of the temperature drift coefficient of the magnetic filler under the conditions of ?55° C. to 150° C. is 0-1000 ppm/° C. Preparation raw materials of the magnetic filler comprise a combination of iron oxide and a metal oxide. By means of mutual synergy of the resin and the specific magnetic filler, and on the premise of ensuring good dielectric properties, the magnetic dielectric resin composition has a high magnetic permeability, a low magnetic loss, and a proper cut-off frequency, and can also reduce a temperature drift coefficient and improve stability.Type: ApplicationFiled: November 10, 2020Publication date: January 11, 2024Inventors: Weifeng YIN, Qianfa LIU, Jianying SHI, Jiangling ZHANG, Sha LI, Songgang CHAI, Yongjing XU, Cui HUO
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Patent number: 11744013Abstract: The present invention relates to a composite, a high-frequency circuit substrate prepared therefrom and a process for preparing the same. Such composite includes (1) from 20 to 70 parts by weight of a thermosetting mixture, including (A) a thermosetting resin based on polybutadiene or a copolymer resin of polybutadiene and styrene having a molecular weight of 11,000 or less, being composed of carbon and hydrogen elements and containing 60% or more of vinyl groups, and (B) an ethylene-propylene rubber having a weight-average molecular weight of greater than 100,000 and less than 150,000 and a number-average molecular weight of greater than 60,000 and less than 100,000 and being in a solid state at room temperature; (2) from 10 to 60 parts by weight of a glass fiber cloth; (3) from 0 to 70 parts by weight of a powder filler; and (4) from 1 to 3 parts by weight of a curing initiator. The composite of the present invention has good solvent solubility and good process operability.Type: GrantFiled: December 14, 2017Date of Patent: August 29, 2023Inventors: Minshe Su, Duye Li, Shanyin Yan, Qianfa Liu, Zhongqiang Yang
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Publication number: 20230202126Abstract: Provided are a low dielectric loss non-woven fabric, a preparation method thereof and use thereof. The low dielectric loss non-woven fabric is composed of an inorganic fiber and a binder, and the binder is any one or a combination of at least two of a fluorine-containing resin emulsion, a polyolefin emulsion, a polyphenylene ether resin or a cyanate ester resin. The non-woven fabric of the present application has good dielectric properties and obvious strengthening effect, and can meet various performance requirements for copper clad laminate materials in the field of high-frequency communication.Type: ApplicationFiled: November 3, 2022Publication date: June 29, 2023Inventors: Wei LIANG, Songgang CHAI, Qianfa LIU, Liangpeng HAO
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Publication number: 20230192972Abstract: The present invention relates to a fluorine-containing resin composition, and a resin vanish, a fluorine-containing dielectric sheet, a laminate, a copper clad laminate and a printed circuit board containing the same. The fluorine-containing resin composition comprises 30 wt. %-70 wt. % of a fluorine-containing polymer, 30 wt. %-70 wt. % of an inorganic filler which includes the following particle size distribution: D10 is greater than 1.5 ?m; and D50 is 10-15 ?m. In the present invention, the selection of an inorganic filler with a specific particle size distribution can ensure that the boards prepared by the fluorine-containing resin composition have excellent dielectric properties and voltage resistance performance, even if the inorganic filler is added in a large amount.Type: ApplicationFiled: December 17, 2020Publication date: June 22, 2023Inventors: Songgang CHAI, Qianfa LIU, Liangpeng HAO, Wei LIANG
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Patent number: 11261305Abstract: A thermosetting resin composition, a prepreg, a laminate, and a printed circuit board are provided. The thermosetting resin composition has a thermosetting polyphenylene ether resin, an unsaturated polyolefin resin, a curing agent, and hollow borosilicate microspheres with surfaces treated with a bromine-containing silane coupling agent. The laminate produced from the thermosetting resin composition satisfies the requirements for overall properties such as low dielectric constant, low dielectric loss, low water absorption rate, high peeling strength, and the like for a high-frequency electronic circuit substrate.Type: GrantFiled: July 26, 2019Date of Patent: March 1, 2022Assignee: SHENGYI TECHNOLOGY CO., LTD.Inventors: Guangbin Chen, Qianfa Liu, Shanyin Yan, Xianping Zeng, Cuiming Du
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Patent number: 11053352Abstract: A vinyl thermosetting resin composition, a prepreg, a laminate, and a printed circuit board are provided. The vinyl thermosetting resin composition has a vinyl thermosetting resin, a curing agent, and hollow borosilicate microspheres with surfaces chemically modified by a vinyl polyphenylene ether resin. The laminate not only has excellent overall properties such as low dielectric constant, low dielectric loss, low water absorption rate, good heat resistance, and the like, but also has only small fluctuations in dielectric constants between batches, which can satisfy the requirements for dielectric constant stability and/or thickness consistency of a substrate.Type: GrantFiled: July 26, 2019Date of Patent: July 6, 2021Assignee: SHENGYI TECHNOLOGY CO., LTD.Inventors: Guangbin Chen, Qianfa Liu, Shanyin Yan, Xianping Zeng, Cuiming Du
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Publication number: 20200247970Abstract: A thermosetting resin composition, a prepreg, a laminate, and a printed circuit board are provided. The thermosetting resin composition has a thermosetting polyphenylene ether resin, an unsaturated polyolefin resin, a curing agent, and hollow borosilicate microspheres with surfaces treated with a bromine-containing silane coupling agent. The laminate produced from the thermosetting resin composition satisfies the requirements for overall properties such as low dielectric constant, low dielectric loss, low water absorption rate, high peeling strength, and the like for a high-frequency electronic circuit substrate.Type: ApplicationFiled: July 26, 2019Publication date: August 6, 2020Inventors: Guangbin CHEN, Qianfa LIU, Shanyin YAN, Xianping ZENG, Cuiming DU
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Publication number: 20200247947Abstract: A vinyl thermosetting resin composition, a prepreg, a laminate, and a printed circuit board are provided. The vinyl thermosetting resin composition has a vinyl thermosetting resin, a curing agent, and hollow borosilicate microspheres with surfaces chemically modified by a vinyl polyphenylene ether resin. The laminate not only has excellent overall properties such as low dielectric constant, low dielectric loss, low water absorption rate, good heat resistance, and the like, but also has only small fluctuations in dielectric constants between batches, which can satisfy the requirements for dielectric constant stability and/or thickness consistency of a substrate.Type: ApplicationFiled: July 26, 2019Publication date: August 6, 2020Inventors: Guangbin CHEN, Qianfa LIU, Shanyin YAN, Xianping ZENG, Cuiming DU
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Patent number: 10400058Abstract: Disclosed are a resin composition, and prepreg, laminate and copper clad laminate using the same, and degrading method thereof, the resin composition comprising: an epoxy resin, a degradable amine curing agent, a degradable mercaptan curing agent and an inorganic filler. A copper clad laminate manufactured by the resin composition comprises several pieces of stacked prepreg, and copper foil arranged at one side or two sides of stacked prepreg, each of the prepreg comprising a reinforced material and the resin composition adhered thereon after soaking and drying. The present invention mixes the degradable amine curing agent and the degradable mercaptan curing agent to obtain a curing system having an adjustable reaction rate, thus facilitating process control when manufacturing the copper clad laminate, and the manufactured copper clad laminate has high overall performance and is completely degradable, thus recycling and reusing each of the effective components.Type: GrantFiled: May 27, 2015Date of Patent: September 3, 2019Assignee: SHENGYI TECHNOLOGY CO., LTD.Inventors: Huayang Deng, Zengbiao Huang, Qianfa Liu, Zhongqiang Yang, Peng Wang
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Publication number: 20180263115Abstract: The present invention relates to a composite, a high-frequency circuit substrate prepared therefrom and a process for preparing the same. Such composite comprises (1) from 20 to 70 parts by weight of a thermosetting mixture, comprising (A) a thermosetting resin based on polybutadiene or a copolymer resin of polybutadiene and styrene having a molecular weight of 11,000 or less, being composed of carbon and hydrogen elements and containing 60% or more of vinyl groups, and (B) an ethylene-propylene rubber having a weight-average molecular weight of greater than 100,000 and less than 150,000 and a number-average molecular weight of greater than 60,000 and less than 100,000 and being in a solid state at room temperature; (2) from 10 to 60 parts by weight of a glass fiber cloth; (3) from 0 to 70 parts by weight of a powder filler; and (4) from 1 to 3 parts by weight of a curing initiator. The composite of the present invention has good solvent solubility and good process operability.Type: ApplicationFiled: December 14, 2017Publication date: September 13, 2018Inventors: Minshe SU, Duye LI, Shanyin YAN, Qianfa LIU, Zhongqiang YANG
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Publication number: 20170321001Abstract: Disclosed are a resin composition, and prepreg, laminate and copper clad laminate using the same, and degrading method thereof, the resin composition comprising: an epoxy resin, a degradable amine curing agent, a degradable mercaptan curing agent and an inorganic filler. A copper clad laminate manufactured by the resin composition comprises several pieces of stacked prepreg, and copper foil arranged at one side or two sides of stacked prepreg, each of the prepreg comprising a reinforced material and the resin composition adhered thereon after soaking and drying. The present invention mixes the degradable amine curing agent and the degradable mercaptan curing agent to obtain a curing system having an adjustable reaction rate, thus facilitating process control when manufacturing the copper clad laminate, and the manufactured copper clad laminate has high overall performance and is completely degradable, thus recycling and reusing each of the effective components.Type: ApplicationFiled: May 27, 2015Publication date: November 9, 2017Inventors: Huayang DENG, Zengbiao HUANG, Qianfa LIU, Zhongqiang YANG, Peng WANG
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Patent number: 9744745Abstract: Provided is a circuit substrate, including a glass film (10) forming a rough layer (11) after surface roughness processing, a resin adhesion (20) located the rough layer (11) on either side of the glass film (10), and a metal foil (30) located on the outside of resin adhesion layer (20). The glass film (10), the resin adhesion layer (20) and the metal foil (30) are joined together through suppressing. The circuit substrate employs the glass film (10) which forms a rough layer (11) after surface roughness processing as a carrier material, so that the resin adhesion layer (20) and the surface of the glass film (10) have a good binding force, and the dielectric constant of the circuit substrate has slight difference in the directions of X, Y and Z. Also provided is manufacturing method for a circuit substrate.Type: GrantFiled: December 29, 2011Date of Patent: August 29, 2017Assignee: SHENGYI TECHNOLOGY CO., LTD.Inventors: Minshe Su, Qianfa Liu
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Publication number: 20140377534Abstract: A circuit substrate, including a porous glass film with the volume percentage ratio of the glass being above 45%, a resin adhesion layer located on either side of the glass film respectively, and a metal foil located in the outside of resin adhesion layer. The glass film, the resin adhesion layer and the metal foil join together through suppressing, and the resin of the resin adhesion layer is filled in the gaps of the glass film. The circuit substrate employs a porous glass film as a carrier material, so that the resin adhesion layer and the surface of the glass film surface have a good binding force, and the CTE of the circuit substrate in the direction of X and Y is reduced compared to instances before, and has good formability, which is simple and convenient in process operation. In addition, also provided is a manufacturing method for a circuit substrate.Type: ApplicationFiled: December 29, 2011Publication date: December 25, 2014Inventors: Minshe Su, Qianfa Liu
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Publication number: 20140322520Abstract: Provided is a circuit substrate, including a glass film (10) forming a rough layer (11) after surface roughness processing, a resin adhesion (20) located the rough layer (11) on either side of the glass film (10), and a metal foil (30) located on the outside of resin adhesion layer (20). The glass film (10), the resin adhesion layer (20) and the metal foil (30) are joined together through suppressing. The circuit substrate employs the glass film (10) which forms a rough layer (11) after surface roughness processing as a carrier material, so that the resin adhesion layer (20) and the surface of the glass film (10) have a good binding force, and the dielectric constant of the circuit substrate has slight difference in the directions of X, Y and Z. Also provided is manufacturing method for a circuit substrate.Type: ApplicationFiled: December 29, 2011Publication date: October 30, 2014Inventors: Minshe Su, Qianfa Liu