951 patents
Page 4 of 48
Utility
Method of Preparing Polymer
4 Jan 24
The present disclosure relates to a method of preparing a polymer including preparing a first polymer mixture by polymerizing while continuously adding a monomer mixture comprising a (meth)acrylate-based monomer, a vinyl aromatic monomer, and a first vinyl cyanide-based monomer to a first reactor; and preparing a second polymer mixture by polymerizing while continuously adding a second vinyl cyanide-based monomer and the first polymer mixture to a second reactor, wherein a starting time of the continuous addition of the second vinyl cyanide-based monomer and the first polymer mixture is a time when a polymerization conversion rate is 40.0 to 55.0%, and a weight ratio of the first vinyl cyanide-based monomer and the second vinyl cyanide-based monomer is 10:90 to 35:65.
Jae Bum SEO, Dae Woo LEE, Jung Tae PARK, Jung Rae LEE, Ji Uk JANG, Kyeong Soo SHIN
Filed: 17 Aug 22
Utility
Photosensitive Resin Composition, Photosensitive Material Comprising Same, Black Matrix Comprising Same, and Electronic Element Comprising Same
4 Jan 24
The present disclosure relates to a photosensitive resin composition, a photosensitive material including the same, a black matrix including the same, and an electronic device including the same.
Seongho JEON, Kyouhyun NAM, Hyunmin PARK
Filed: 9 Nov 21
Utility
Polycarbonate Copolymer
4 Jan 24
Youngwook SON, Hyong Min BAHN, Byeong-Su KIM, Taehyung KIM, Yeji YU
Filed: 8 Aug 22
Utility
Polyimide Polymer Film, Substrate for Flexible Display Device, and Flexible Display Device Using the Same
4 Jan 24
The present disclosure relates to a polyimide polymer film capable of realizing excellent optical properties and high heat resistance, a substrate for flexible display device and a flexible display device using the same.
Hye Jin PARK
Filed: 17 Aug 21
Utility
Monomer Composition for Synthesizing Recycled Plastic, Preparation Method Thereof, and Recycled Plastic, Molded Product Using the Same
4 Jan 24
The present invention relates to a monomer composition for synthesizing recycled plastic, which comprises an aromatic diol compound, wherein a color coordinate b* is 0.1 to 1, wherein the aromatic diol compound yield is more than 75%, and wherein the monomer composition for synthesizing recycled plastic is recovered from a polycarbonate-based resin, a method for preparing the same, and a recycled plastic and molded product using the same.
Jeongbin LEE, Eunju PARK, Ki Jae LEE, Jungmoon BAE, Mooho HONG
Filed: 14 Jul 22
Utility
Graft Copolymer, Curable Resin Composition Comprising Same, and Methods of Preparing Them
4 Jan 24
The present invention relates to a graft copolymer, and to a core-shell type graft copolymer comprising: a core comprising a rubbery polymer; and a shell formed by graft polymerizing a graft monomer to the rubbery polymer, wherein the graft copolymer comprises the core in 72 wt % to 83 wt %, the core has an average particle diameter of 250 nm or more, and the shell has a weight average molecular weight of 40,000 g/mol or less, a curable resin composition including the same, and methods of preparing them.
Min Ah Jeong, Ki Hyun Yoo, Sang Hoon Han, Hye Rim Lee
Filed: 2 Mar 22
Utility
Isophthalate-based Plasticizer Composition and Resin Composition Comprising the Same
4 Jan 24
A plasticizer composition including isophthalate derived from a mixture of hexyl alcohol isomers and di(2-ethylhexyl) terephthalate, and a resin composition comprising the same are provided.
Hyun Kyu KIM, Jeong Ju MOON, Joo Ho KIM, Seok Ho JEONG, Eun Suk KIM, Seung Taek WOO, Woo Hyuk CHOI
Filed: 23 Nov 21
Utility
Composition
4 Jan 24
According to the present invention, it is possible to provide a composition comprising a resin component and a filler component comprising a filler having a specific gravity of 3 or more and a filler having a specific gravity of less than 3, which achieves a low specific gravity effect in a state where a filler is filled in a high content and in a state where realization of physical properties is sufficiently secured, and has improved storage stability without deterioration of physical properties such as a thermal conductivity, and a product comprising a heating element and the composition or a cured product thereof in thermal contact with the heating element.
Hye Jin Kim, Je Sik Jung, Hyoung Sook Park, Jin Hyeok Won, Sung Bum Hong, Sol Yi Lee, Jong Hun Choi, Sang Hyuk Seo, Jae Min Jung
Filed: 28 Jan 22
Utility
Novel Compound and Organic Light Emitting Device Comprising the Same
4 Jan 24
Yongwook Kim, Jaechol Lee, Soyoung Yu, Shin Sung Kim, Young Kwang Kim, Byeong Yun Lim, Su Hun Jeong
Filed: 3 Dec 21
Utility
Method for preparing alpha-methylstyrene
2 Jan 24
A method for preparing alpha-methylstyrene according to one embodiment of the present disclosure includes dehydrating a dimethylbenzyl alcohol solution in a reactor under an acid catalyst to prepare alpha-methylstyrene, where a reaction product after the dehydration reaction comprises a first reaction product including a first alpha-methylstyrene; and a second reaction product including vapor (H2O), a second alpha-methylstyrene and unreacted materials; and separating the second alpha-methylstyrene and the unreacted materials comprised in the second reaction product and recirculating the second alpha-methylstyrene and the unreacted materials to the reactor, a temperature inside the reactor during the dehydration reaction is 135° C. or higher, and a content of the acid catalyst is from 100 ppm to 1,500 ppm based on a total weight of dimethylbenzyl alcohol of the dimethylbenzyl alcohol solution.
Jaekwon Jeoung, Dong Hyun Ko, Sunhwan Hwang, Jun Han Kang, Sang Jin Han
Filed: 30 Aug 21
Utility
Preparing method of super absorbent polymer sheet and super absorbent polymer sheet prepared therefrom
2 Jan 24
The present disclosure relates to a preparing method of a super absorbent polymer sheet and a super absorbent polymer sheet prepared therefrom.
Kiyoul Yoon, Hyeon Choi, Hyosook Joo, Gicheul Kim, Ju Eun Kim
Filed: 14 Dec 18
Utility
Heterocyclic compound and organic light emitting device including the same
2 Jan 24
Minjun Kim, Jin Joo Kim, Wanpyo Hong, Dong Hoon Lee
Filed: 12 Jul 19
Utility
Compound and color conversion film comprising same
2 Jan 24
The present specification relates to a compound, and a color conversion film, a backlight unit and a display apparatus including the same.
Jiyeon Sung, Hieu Leduy, Sang Pil Moon, Hoyong Lee
Filed: 15 Oct 19
Utility
Polycarbonate resin composition and article including the same
2 Jan 24
Hyong Min Bahn, Un Ko, Jungmoon Bae, Daehyeon Hwang, Mooho Hong, Sugil Yum
Filed: 6 Nov 19
Utility
Preparation method of polyalkylene carbonate
2 Jan 24
The present disclosure relates to a method for preparing a polyalkylene carbonate.
Woosung Hwang, Dongmin Kim, Seung Young Park, Mi Kyung Kim, Joon Ho Shin, Wonseok Kim
Filed: 7 Jul 20
Utility
Optical laminate, polarizing plate, and display device
2 Jan 24
The present disclosure provides an optical laminate including: a polymer substrate containing a polymer resin and rubber particles having a cross-sectional diameter of 10 to 500 nm dispersed in the polymer resin; and an antiglare layer containing a binder resin and organic fine particles, nano-inorganic particles and chain-shaped silica dispersed in the binder resin, wherein rubber particles having a cross-sectional diameter of 10 to 500 nm exist within 50% of the thickness of the antiglare layer from the interface between the polymer substrate and the antiglare layer, a polarizing plate including the optical laminate, and a liquid crystal display and a display device including the polarizing plate.
Min Soo Kim, Jung Hyun Seo, Jaehoon Shim, Jae Pil Koo, Hyung Oh Lim, Jaeyoung Kim
Filed: 8 Jan 20
Utility
Apparatus for detecting coolant leakage
2 Jan 24
An apparatus for detecting coolant leakage that can accurately detect the coolant leakage height in the process of detecting coolant leakage in the event of coolant leakage in a battery pack.
Dong-Wan Ko
Filed: 20 Feb 19
Utility
Encapsulation film
2 Jan 24
An encapsulation film, an organic electronic device comprising the same, and a method for manufacturing an organic electronic device using the same are provided.
Sang Min Park, Hyun Suk Kim, Yeong Bong Mok, Sung Nam Moon, Seung Min Lee, Chul Min Jeon
Filed: 4 Jan 21
Utility
FPC connection structure and method for connecting to printed circuit board by using same
2 Jan 24
An FPC connection structure including: several strands of FPC conductor patterns coated with an insulating film; and FPC terminals each extending from one end portion of each of the FPC conductor patterns and provided in a flat type to enable spot welding on a substrate terminal unit provided on the printed circuit board.
Dong-Kwan Jang
Filed: 7 Nov 19
Utility
Organic light emitting device
2 Jan 24
An organic light emitting device including a first electrode, a second electrode provided opposite to the first electrode, and an organic material layer provided between the first electrode and the second electrode, wherein the organic material layer includes a hole transfer layer and an electron blocking layer, and the hole transfer layer and the electron blocking layer include a compound of Chemical Formula 1, the materials of the hole transfer layer and the electron blocking layer are different from each other, and one or more layers that are not the hole transfer layer and the electron blocking layer of the organic material layer include a compound of Chemical Formula 2.
Sang Duk Suh, Jae Seung Ha, Dong Hoon Lee, Minseung Chun, Ji Young Choi, Woochul Lee, Joo Ho Kim, Hoon Jun Kim
Filed: 20 Sep 19