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WO/2021/060602A1 |
The present invention relates to a polyimide powder preparation method and a polyimide powder prepared thereby and, more specifically, the method comprises: a dispersion solution preparation step of preparing a dispersion solution by dis...
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WO/2021/060270A1 |
The present invention provides: a liquid crystal aligning agent which enables the formation of a liquid crystal alignment film that has high refractive index but does not have coloring properties, thereby having high light transmittance;...
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WO/2021/058491A1 |
Hyperbranched cationic polymers are described. The polymers employ a 4-branching monomer resulting in an increase in the number of functional terminal groups due to the extra branching units, providing excellent transfection efficiency a...
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WO/2021/060616A1 |
The present invention relates to a polyamic acid composition capable of simultaneously implementing a low dielectric dissipation factor, high adhesive strength, and mechanical characteristics at high temperature, a method for preparing t...
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WO/2021/060268A1 |
Provided are: a liquid crystal aligning agent that is for forming a liquid crystal alignment film for vertical alignment (VA) and that has a high refractive index and a high light transmittance due to not having any coloration; a liquid ...
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WO/2021/059999A1 |
Provided is a liquid crystal aligning agent from which a liquid crystal alignment film, which is highly able to align liquid crystals, is obtained even when exposed to excessive heating. The liquid crystal aligning agent has a group re...
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WO/2021/060615A1 |
The present invention relates to: a polyamic acid composition capable of simultaneously achieving a low dielectric constant, high adhesion, and high-temperature mechanical properties; a method of producing the polyamic acid composition; ...
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WO/2021/060752A1 |
The present invention relates to a polyimide-based film and a method for producing same, and more particularly, to a polyimide-based film having a low Kc value of 1.55 or less, having excellent surface evenness, and suppressing the occur...
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WO/2021/060617A1 |
The present application relates to a polyamic acid composition, a preparation method for a polyamic acid composition, and a polyimide comprising same. Provided are: a polyamic acid composition which can concurrently exhibit low permittiv...
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WO/2021/056790A1 |
A polyimide material, which employs the molecular structural design of a target polyimide material compound by means of introducing 2,4-trifluoromethyl dianhydride that has a benzene ring and fluorine-containing p-phenylenediamine in com...
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WO/2021/054515A1 |
Disclosed are a polyimide film having a moisture absorption expansion coefficient of about 9 ppm/% RH or less in a relative humidity range of 20 to 80% at 25°C, a method for manufacturing same, and a flexible metal foil laminate compris...
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WO/2021/053773A1 |
The present invention addresses the problem of providing: a photosensitive curable composition that has superior heat resistance (high Tg) and dielectric properties (low permittivity and low dielectric tangent), and can be patterned by p...
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WO/2021/054475A1 |
Disclosed is a polyimide precursor composition comprising a polyimide precursor, a phosphorus compound having a P(=O)OH structure or a P(=O)OR (wherein R is an alkyl group having 4 or more carbon atoms) structure, and a solvent. With thi...
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WO/2021/054476A1 |
Disclosed is a method for manufacturing a flexible electronic device, the method comprising: (a) a step for applying, onto a substrate, a polyimide precursor composition which contains a polyimide precursor, and needle-like fine particle...
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WO/2021/052997A1 |
The presently claimed invention relates to polyalkyleneimine-based polymers that are useful as dispersants and a process for the preparation thereof. The presently claimed invention is also directed to dispersants that are useful in solv...
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WO/2021/052998A1 |
The presently claimed invention relates to polyalkyleneimine-based polymers that are useful as dispersants and a process for the preparation thereof. The presently claimed invention is also directed to dispersants that are useful in solv...
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WO/2021/054513A1 |
The present invention pertains to: a method for producing a polyimide powder; and a polyimide powder produced thereby. More specifically, the method comprises: a dispersion preparation step for dispersing a dianhydride compound, a diamin...
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WO/2021/052999A1 |
The presently claimed invention relates to polyalkyleneimine-based polymers that are useful as dispersants and a process for the preparation thereof. The presently claimed invention is also directed to dispersants that are useful in solv...
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WO/2021/054365A1 |
The purpose of the present invention is to provide a liquid crystal alignment agent which can produce a liquid crystal alignment film having the required functions, including adhesion, and having favorable workability, and to provide a l...
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WO/2021/053800A1 |
[Problem]To provide a solvent-soluble polyimide compound with which the initial charge/discharge efficiency and the cycle characteristics of a lithium-ion secondary battery can be significantly improved. [Solution] A solvent-soluble poly...
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WO/2021/049390A1 |
The objective of the present invention is to provide a curable resin composition which has fast curability, high heat resistance, and excellent permeability. The present invention comprises (A) a cyanate ester resin, (B) an epoxy resin...
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WO/2021/048219A1 |
The invention relates to a process of manufacturing a composite comprising a layer of a polyimide and a substrate, comprising at least these steps: i. Providing a first composition comprising an acid compound; and a second composition co...
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WO/2021/048075A1 |
The invention pertains to a polyamide-imide (PAI) polymer comprising recurring units according to any of formulae (I) and (II) wherein: Z is a cycloaliphatic moiety selected from the group consisting of substituted or unsubstituted, mono...
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WO/2021/049545A1 |
This polyimide has a repeating unit represented by formula (1). [In the formula, R1 represents a tetravalent group, and R2 represents a divalent group. However, at least a portion of the instances of R1 is a group represented by formul...
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WO/2021/048074A1 |
The invention pertains to a process for preparing a polyamide-imide (PAI) polymer by melt polymerization of at least one cycloaliphatic acid component comprising three carboxyl moieties selected from the group consisting of carboxylic ac...
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WO/2021/046994A1 |
Disclosed are a polymer dispersed liquid crystal composition, a method for preparing a polymer dispersed liquid crystal film, and a display panel. The polymer dispersed liquid crystal composition comprises a polymer monomer and a liquid ...
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WO/2021/049255A1 |
A polymer (A) having a structure unit (U1) derived from a monomer represented by formula (1) is included in the liquid crystal orientation agent. In formula (1), R1 represents a monovalent organic group, R2 and R3 each represent a single...
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WO/2021/049707A1 |
The present invention provides a multilayer polyimide film and a method for manufacturing same, wherein a core layer consists of a non-thermoplastic polyimide resin comprising one or more imidization catalysts and one or more dehydrating...
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WO/2021/043009A1 |
A crystalline sulfonated polyimide block copolymer proton exchange membrane, a preparation method therefor, and use thereof, relating to the technical field of fuel cells. The chemical structural formula thereof is as shown in (I), in wh...
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WO/2021/044369A1 |
A thermoplastic composition includes 25 to 95 weight percent of a poly(etherimide); 5 to 70 weight percent of a polymer different from the poly(etherimide) that is partially miscible with the poly(etherimide); and 1 to 15 weight percent ...
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WO/2021/045004A1 |
A polyamide imide resin which contains a structural unit (Ia) represented by formula (Ia) and a structural unit (IIa) represented by formula (IIa). In formula (Ia), each X independently represents a hydrogen atom or at least one substitu...
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WO/2021/042497A1 |
Provided are a polyimide precursor, a polyimide film formed therefrom, and a method for preparing said polyimide. The polyimide precursor comprises a product formed from diamine and dianhydride; the diamine comprises a diamine containing...
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WO/2021/042495A1 |
Disclosed are a polyimide and a preparation method therefor, and a flexible OLED panel. Provided is a polyimide, wherein the repeating unit of the polyimide comprises an asymmetric structure group, the asymmetric structure group comprise...
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WO/2021/045126A1 |
Provided are: a curable resin composition including a photosensitizer and a resin that includes repeating units represented by formula (1-1), the curable resin composition being such that the resin includes 50 mol% or more of repeating u...
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WO/2021/042494A1 |
Disclosed is a perovskite film additive, with same being used for click polymerization of monomers to form a polymer, wherein the monomers of click polymerization are difunctional alkyne compounds and difunctional azide compounds, that a...
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WO/2021/045681A1 |
The present invention relates to a nanoparticle which is characterized by a photoluminescent amorphous core formed from threonine and polyethylenimine (PEI), and wherein the surface of the core is functionalised with at least one carbohy...
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WO/2021/045682A1 |
The present invention relates to a colorimetric method for detecting bacterial cells in a sample. The colorimetric method comprises: (a) contacting the sample with nanoparticles to form a mixture, wherein the nanoparticles are characteri...
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WO/2021/041234A1 |
In some aspects, the present disclosure pertains to a polymer that comprises a plurality of polymer arms, wherein a first portion of the polymer arms comprise a reactive end group and wherein a second portion of the polymer arms comprise...
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WO/2021/035977A1 |
Disclosed are a polyimide and a preparation method therefor, and the polyimide is obtained from a reaction between a fluorine-containing aromatic dianhydride and a carbazole diamine.
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WO/2021/039309A1 |
An acidic gas separation membrane according to the present invention is selectively permeable to an acidic gas, while comprising a first porous layer and a resin composition layer that is formed on the first porous layer with use of a re...
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WO/2021/035918A1 |
A method for preparing a high-frequency circuit board layer structure. The method comprises the following steps: (1) coating a synthetic liquid TFP film on a cured PI thin film; (2) sending same to a tunnel oven for segmental baking to f...
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WO/2021/039841A1 |
Provided are: a method for producing a cured film, the method comprising a first exposure step in which a part of a photocurable film formed from a photocurable resin composition is exposed, a development step in which the photocurable f...
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WO/2021/039782A1 |
A curable resin composition comprising a resin having repeating units represented by formula (1-1) and a solvent; a cured film obtained by curing the curable resin composition; a layered product including the cured film; a method for pro...
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WO/2021/039442A1 |
This polyimide resin composition includes: a polyimide resin (X) containing a repeating unit represented by formula (1) and a repeating unit represented by formula (2); and a fluorine-containing polymer (Y). (In formula (1), R1-R4 are ea...
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WO/2021/041222A1 |
In some aspects, the present disclosure pertains to a multi-arm polymer comprising a core and a plurality of polyoxazoline segments (or arms) having a first end that is covalently attached to the core and a second end comprising a moiety...
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WO/2021/040127A1 |
The present invention relates to a high-thickness polyimide film which has a reduced number of bubbles, has high elasticity, and has a controlled surface roughness; and a manufacturing method for a polyimide film comprising same. Provide...
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WO/2021/035907A1 |
Disclosed are a fluorine-group-containing polyimide and a preparation method therefor, a flexible substrate and a display device. The fluorine-group-containing polyimide has a structural formula of C-B-[A]n-B-C, wherein A includes a fluo...
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WO/2021/033655A1 |
The present invention addresses the problem of providing a starting-material composition for resins which makes it possible to produce a polyesterimide resin that has far higher mechanical properties than conventional ones. The starting-...
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WO/2021/033544A1 |
A polyimide resin composition including a polyimide resin and a crosslinking agent having at least two oxazolyl groups, wherein the polyimide resin is a polyimide resin having constituent units A derived from a tetracarboxylic acid dianh...
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WO/2021/031924A1 |
A polyimide film containing a fluorine substituent and a Cardo structure and a preparation method therefor. The polyimide film has excellent heat resistance, transparency and mechanical properties. The transparent polyimide film has a gl...
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