36 results about "Ladder polymer" patented technology

In one embodiment the present invention provides for a high thermal conductivity highly structured resin that comprises a host highly structured resin matrix, and a high thermal conductivity filler 30. The high thermal conductivity fillers are from 1-1000 nm in length, and high thermal conductivity fillers have an aspect ratio of between 3-100. Particular highly structured highly structured resins include at least one of liquid crystal 40 polymers, interpenetrating networks, dendrimer type matrices, expanding polymers, ladder polymers, star polymers and structured organic-inorganic hybrids 60.

A preparation method for highly tactic ladder-like polysilsequioxane with solubility, high molecular weight and different organic side groups is introduced in this invention. Trichlorosilicane with different substituents reacts with template-1, 4-dianiline or its derivatives with ladder-brace template method to produce conjugate precursor containing four silicon-chlorine bonds, which self-assembles into ladder polymers by hydrogen bond template function of p-dianiline and transforms into silanol end-capping organic bridging siloxane polymers after hemihydration-hydrolysis-condensation. Such a compound is then end-capped with trimethylsiloxyl and hydrolyzed to remove p-dianiline, and ladder-like polysilsequioxane can be obtained after further condensation. Or tetrafunctional disiloxane monomers with template-function side groups self-assemble into ladder-like polymers, which are then condensation-polymerized and end-capped with trimethylsiloxyl to obtain ladder-like polysilsequioxane.

The invention relates to siloxane bridged ladderlike polysiloxane with siloxane as the bridge base and the main chain and a preparation method thereof. The method includes: subjecting RSiX3, R'SiX3 and alpha, omega-silandiol to first step condensation reaction so as to form an intermediate; and then further subjecting the intermediate to second step condensation reaction, and then carrying out separation and purification to obtain the siloxane bridged ladderlike polysiloxane with the following structure. The siloxane bridged ladderlike polysiloxane gives consideration to the high temperature resistance, high strength and high compatibility of a ladderlike polymer and polysiloxane with general organic macromolecules, and by changing the bridge base, the side group, the terminal group and degree of polymerization, the air tightness, adhesion, refraction and other comprehensive performance of the siloxane bridged ladderlike polysiloxane can be regulated. (formula I).

The present invention provides such a three-dimensional ladder polymer that has, as a main chain, a silsesquioxane skeleton having a structure of the cage structure of octasilsesquioxane with two broken corners. The polymer of the invention is a polymer obtained by using a silsesquioxane derivative represented by formula (1-0). R0 each represents hydrogen, alkyl, cycloalkyl, aryl or arylalkyl, R1 each represents chlorine, a group defined as similar to R0, or a group having —CN, X independently represents hydrogen, chlorine, a group defined as similar to R1, or a group having one of —CH═CH—, —C≡C—, —OH, —COOH, —COO—, 2-oxapropane-1,3-dioyl, oxiranyl, oxiranylene, oxetanyl, oxetanylene, 3,4-epoxycyclohexyl, —SH, —NCO, —NH— and —NH2; and at least two of X each is a reactive group.

A polymer of formula (I): where: n is an integer from 10 to 5,000; m is an integer from 10 to 5,000; Ar1 and Ar3 are the same or different and are residues derived from a tetra-hydroxy aromatic monomer, the tetra-hydroxy aromatic monomer being wherein R is the same or different and is H or a C1-C8 alkyl, C2-C8 alkenyl or C3-C8 cycloalkyl group; and, Ar2 and Ar4 are the same or different and are residues derived from a tetra-halogenated aromatic monomer, the tetra-halogenated aromatic monomer being wherein X is F, Cl or Br, and R1 and R2 are the same or different and are wherein y is an integer from 1 to 8; with the proviso that when Ar1 is the same as Ar3 and Ar2 is the same as Ar4, R1 and R2 are not both —CN is useful as a material for gas separation, vapor separation, adsorbents or catalysis.

The invention relates to trapezoidal conjugated polymer and a method for preparing the same, belonging to the technical field of the organic chemical industry and the fine chemical industry. The trapezoidal conjugated polymer is effectively prepared by enabling raw material (single-linked polymer containing perylene diimide) to be subjected to the photocatalytic dehydrogenation cyclization reaction in organic solvent under the action of iodine of the catalytic amount, the solar radiation and the air condition at certain temperature. Compared with the raw material, the conjugation between trapezoidal conjugated polymer monomers is improved obviously, and the optical stability of the trapezoidal conjugated polymer is improved markedly.

The invention relates to a porous carbon nanoribbon with a large specific surface area. A tetra-functional group monomer and a bifunctional group are subjected to condensation polymerization so as to form a full-carbon ladder polymer. The full-carbon ladder polymer spontaneously generates a nanoribbon in a generation process, a template is not needed, and then the nanoribbon is subjected to high-temperature carbonization in an inert atmosphere so as to obtain the porous carbon nanoribbon. The obtained porous carbon nanoribbon has a large specific surface area, is used as an electrode material of a supercapacitor and has excellent capacitive property; a technology is simple; and raw materials are easily available.

The invention relates to the ladder-type blue light-emitting polymers with excellent heat stability which are polymerized either grafting with blue luminescent monomers on the polymer backbones or adding fluorene to styrene monomers. The above blue light-emitting polymers have a high glass transition temperature and a 5%-weight-loss temperature above 400° C. Accordingly these polymers can be used as blue luminescent materials in the display devices and as luminescent cases for home appliances or cellular phones.

The invention relates to a low-friction coefficient anti-bonding master batch special for a metallized base film and a preparation method thereof. The low-friction coefficient anti-bonding master batch mainly comprises, by weight, 90-95 parts of polypropylene resin and 5-10 parts of polymethylsesquisiloxane-polyphenylsilsesquioxane. The polymethylsesquisiloxane-polyphenylsilsesquioxane is a ladder polymer with R3SiO terminated. The molecular formula of the polymethylsesquisiloxane-polyphenylsilsesquioxane is [CH3SiO1.5]n-[PhSiO1.5]m, wherein n is 5-8 and m is 2-5. According to the preparation method, an anti-sticking agent is added by means of side feeding through precision electronic weight loss scales, and pelleting is performed after melt blending by means of the special double-screw process. By the adoption of the method, the problem that no slipping agent (master batch) can be added into the metallized film and thus the friction coefficient is high and the problem that the low friction coefficient is required under the condition that no migration slipping agent can be added into an aluminum laminated film are effectively solved. The friction coefficient of the obtained metallized base film is lowered to 0.4 or below from 0.8 or above, the slipping property is good, no migration happens, and the product surface is not greasy, high in glossiness, resistant to abrasion, lasting and effective.

A polymer of formula (I): where: n is an integer from 10 to 5,000; m is an integer from 10 to 5,000; Ar1 and Ar3 are the same or different and are residues derived from a tetra-hydroxy aromatic monomer, the tetra-hydroxy aromatic monomer being wherein R is the same or different and is H or a C1-C8 alkyl, C2-C8 alkenyl or C3-C8 cycloalkyl group; and, Ar2 and Ar4 are the same or different and are residues derived from a tetra-halogenated aromatic monomer, the tetra-halogenated aromatic monomer being wherein X is F, Cl or Br, and R1 and R2 are the same or different and are wherein y is an integer from 1 to 8; with the proviso that when Ar1 is the same as Ar3 and Ar2 is the same as Ar4, R1 and R2 are not both —CN is useful as a material for gas separation, vapor separation, adsorbents or catalysis.

Catalytic processes have been developed for direct chemical conversion of amides to methyl ether polymers or methyl ether ladder polymers. Amides formed by reacting acetic acid with monoethanol amine (MEA) or acetic acid with butylamine were polymerized in the presence of transition metal catalysts in air to form linear polymers. Ethanol acetamide was catalytically converted to a linear polyether as characterized by FTIR spectra. The catalysts were based on molecular strings of mono-, di- or tri-valent transition metal compounds that opened the amide carbonyl double bond to produce linear polyethers. Laboratory results have demonstrated [cobalt(II)]2, [manganese(II)]2, cobalt(II)-manganese(II), [nickel(II)]2 and related families of catalysts to be effective for formation of methyl ether polymers by this process.Similar transition metal catalysts plus hydrogen peroxide facilitated reactions of the amide compounds dimethylacetamide (DMAc), DMF as well as amides formed from L-cysteine with MEA, serine with MEA, arginine with MEA and histidine with MEA to form insoluble methyl ether ladder polymers at or near ambient temperature that were quite different from the linear polyether polymers. Catalysts active for these polymerizations were based on di- or tri-valent transition metals. The polymer formed from DMAc using a Co(III) catalyst plus 20% hydrogen peroxide was a ladder polymer as characterized by FTIR spectroscopy and isolated solids were observed to be microscopic hexagonal needle shaped crystals. The catalysts were based on molecular strings of tri-valent transition metal compounds. Laboratory results have demonstrated [cobalt(III)]2 and related families of catalysts in the presence of hydrogen peroxide to be effective for formation of methyl ether ladder polymers.

A method of forming integrated circuit structures, such as capacitors and conductive plugs, within contact openings formed in a photosensitive silicone ladder polymer (PVSQ) is disclosed. Contact openings with reduced striations and CD loss are formed in a photosensitive silicone ladder polymer (PVSQ) layer by patterning the PVSQ film employing a photomask with a predefined pattern, exposing the PVSQ film to i-line, developing the exposed PVSQ film in a mixture of anisole / xylene in a ratio of about 1:2 for about 30 seconds, and subsequently optionally annealing the undeveloped PVSQ film at a temperature of about 300° C. to about 600° C.

A method of forming integrated circuit structures, such as capacitors and conductive plugs, within contact openings formed in a photosensitive silicone ladder polymer (PVSQ) is disclosed. Contact openings with reduced striations and CD loss are formed in a photosensitive silicone ladder polymer (PVSQ) layer by patterning the PVSQ film employing a photomask with a predefined pattern, exposing the PVSQ film to i-line, developing the exposed PVSQ film in a mixture of anisole / xylene in a ratio of about 1:2 for about 30 seconds, and subsequently optionally annealing the undeveloped PVSQ film at a temperature of about 300° C. to about 600° C.

Embodiments of the present disclosure provide for a triptycene-based A-B monomer, a method of making a triptycene-based A-B monomer, a triptycene-based ladder polymer, a method of making a triptycene-based ladder polymer, a method of using triptycene-based ladder polymers, a structure incorporating triptycene-based ladder polymers, a method of gas separation, and the like.

The invention discloses a conjugated trapezoidal polymer-carbon nanotube composite material. A conjugated trapezoidal polymer coats the outer wall of a carbon nanotube. The invention also discloses apreparation method of the conjugated trapezoidal polymer-carbon nanotube composite material. The preparation method comprises the following steps: uniformly dispersing the conjugated trapezoidal polymer and carbon nanotubes in methanesulfonic acid to obtain a mixed solution; dropwise adding water into the mixed solution, stirring, stopping dropwise adding water after floccules are generated, and washing the floccules to obtain the conjugated trapezoidal polymer-carbon nanotube composite material. The invention also discloses an application of the conjugated trapezoidal polymer-carbon nanotubecomposite material in a lithium ion battery. According to the invention, the carbon nano tube is used as a support, the conjugated trapezoidal polymer grows along the outer tube wall of the carbon nano tube to form a coating structure, the carbon nano tube provides a good conductive channel, the conductivity of the carbon nano tube is enhanced, the cycle performance and rate capability of the carbon nano tube are improved, and the carbon nano tube is used as a lithium ion battery negative electrode to improve the electrochemical performance of the lithium ion battery negative electrode.

The invention provides an aza-fused conjugated trapezoidal polymer. The aza-fused conjugated trapezoidal polymer is prepared from 1,2,4,5-benzenetetramine tetrahydrochloride and 2,5-dihydroxy-1,4-benzoquinone through a polymerization reaction, or from 1,2,4,5-benzenetetramine tetrahydrochloride and piperazine-2,3,5,6-tetraone through a polymerization reaction, or from 1,2,4,5-benzenetetramine tetrahydrochloride and pyrene-4, 5, 9, 10-tetraone through a polymerization reaction. In the conjugated trapezoidal polymer, a fused ring structure limits free torsional motion between aromatic units along a skeleton, stable and effective conjugation can be provided, and transmission of carriers is facilitated. The conjugated trapezoidal polymer has good absorption performance in a visible light range; the energy band structure of the conjugated trapezoidal polymer meets the requirement of water photolysis for oxygen production under visible light irradiation; the conjugated trapezoidal polymer has excellent oxygen production performance; and the trapezoidal polymer is used for visible light decomposition of water for oxygen production for the first time, and the application scope of the trapezoidal polymer in the field of photocatalysis is greatly broadened.

The organic semiconductor polymers relates to the synthesis of a carbazole-based ladder polymer. The synthesis of the ladder polymer includes forming a precursor conjugated polymer by Suzuki step growth polymerization of 2,7-dibromocarbazole with 1,4-dibromo-2,5-divinylbenzene, followed by end capping with 2-bromostyrene and 2-vinyl-phenylboronic acid. Then, the pendent vinyl groups are closed by ring-closing olefin metathesis to obtain the ladder polymer.

The invention provides high-strength polymer nanoribbons and a preparation method thereof. The nanoribbons are spontaneously generated in a polycondensation forming process of a polymer, wherein the polymer has the structure general formula as described in the specification, wherein R represents NH2, OH, alkoxy or alkyl, alkoxy is selected from methoxyl and ethyoxyl, and alkyl is selected from methyl or ethyl. The whole-carbon ladder polymer is formed by polycondensation of two monomers and spontaneously generates the nanoribbons during the forming process, no template agent and no subsequent processing are required, and a new technical idea and a new solving method are provided for synthesis of the high-strength nanoribbons; and the prepared polymer nanoribbons have high strength and excellent mechanical properties, and can be well used as reinforcing materials in composite materials.

The invention discloses an insulating composite aluminum enameled wire, belonging to the enameled wire material field, comprising a conductor, wherein the conductor is a composite aluminum wire, and the conductor surface is sequentially provided with a primer layer, a first high-temperature resistant layer, an insulating layer, a second high-temperature resistant layer and an abrasion-resistant layer from the inside to the outside, and the primer layer is polyphthalamide. An imide paint, wherein the first high temperature resistant layer is composed of acetal, phenolic, melamine, polypyrrole and graphite ladder polymer, the insulating layer is composed of silicone resin, copolyphenol and polypropylene, the second high temperature resistant layer is composed of ceramic fiber and polyphenylene, and the wear resistant layer is composed of polytetrafluoroethylene, silicon carbide, graphene and epoxy resin. The insulation composite aluminum enameled wire improves the high temperature resistance and the wear resistance.

The present invention relates to the field of preparation of nanofibers, and provides a method for preparing graphene-coated PAN-based ladder polymer ultrashort nanofibers, the steps at least comprising: (1) impregnating polyacrylonitrile fiber mats and / or non-woven fabrics with graphene The dispersion liquid is cut into strips after drying; (2) the strips are drawn by hot air at 80°C-150°C to prepare graphene-coated PAN electrospun oriented fiber bundles; (3) the electrospun oriented fibers The bundles are subjected to air oxidation and inert gas cyclization to form oriented filament bundles of graphene-coated PAN-based ladder polymer nanofibers, which are further cut to obtain graphene-coated PAN-based ladder polymer ultrashort nanofibers.

A polybenzodifuran ladder polymer is disclosed.

The invention provides a class of aza-condensed and conjugated ladder polymers, which are obtained by polymerization of 1,2,4,5-benzenetetramine tetrahydrochloride and 2,5-dihydroxy-1,4-benzoquinone ; or obtained by polymerization of 1,2,4,5-benzenetetramine tetrahydrochloride and piperazine-2,3,5,6-tetraketone; or by 1,2,4,5-benzenetetramine Tetrahydrochloride and pyrene-4,5,9,10-tetraketone are obtained by polymerization reaction. In the above-mentioned conjugated ladder polymers, the fused ring structure restricts the free torsional movement between the aromatic units along the skeleton, which can provide stable and effective conjugation and facilitate the transport of carriers. The conjugated ladder polymer has good absorption in the range of visible light, and its energy band structure meets the requirements of photolysis of water for oxygen production under visible light irradiation, and has excellent oxygen production performance. The present invention uses the ladder polymer for visible light decomposition for the first time Water produces oxygen, which greatly broadens the application of ladder polymers in the field of photocatalysis.

The invention relates to a microporous ladder polymer and its synthesis method and application, belonging to the field of high molecular polymers. The weight average molecular mass of the polymer is 3000-500000, the molecular weight distribution is 1.2-3.5, and the specific surface area is 200m 2 / g‑1000m 2 / g. The preparation method is to add the dianthracene monomer into the solvent, mix thoroughly to obtain a homogeneous solution, remove the residual oxygen in the homogeneous solution, and under the protection of a non-oxidizing atmosphere, irradiate the homogeneous solution with ultraviolet light to remove the residual oxygen. The dianthracene monomer is subjected to anthracene cycloaddition reaction to obtain the microporous ladder polymer. The synthesis method adopted in the present invention has the characteristics of metal-free catalysis, fast and efficient, etc. The synthesized polymer has good microporous characteristics, solubility and photosensitivity, generates abundant singlet oxygen under aerobic conditions, and can be used to degrade organic pollutants. and photodynamic preparations and other fields.

The invention relates to a preparation method of a benzoxazine-based conjugated trapezoidal polymer and application of the benzoxazine-based conjugated trapezoidal polymer in hydrogen sulfide detection. According to the benzoxazine-based conjugated trapezoidal polymer, diaminobenzenediol molecules are taken as monomers A, benzoquinone compounds are taken as monomers B, a polybenzoxazine trapezoidal conductive polymer is generated through a polymerization reaction kettle and a vacuum atmosphere furnace, and then a gas sensing device is prepared to be used for detecting acid gases such as hydrogen sulfide and the like. The polymer has the advantages of simple preparation, low cost, and high specificity and high sensitivity in hydrogen sulfide detection. The benzoxazine-based conjugated trapezoidal polymer has remarkable semiconductor characteristics, can work at room temperature, is low in power consumption requirement, and is possibly suitable for a wearable sensor or on-site rapid detection of acute toxic and corrosive hydrogen sulfide gas, such as pipeline and sewage treatment. And the material also can be used as a core material of a portable hydrogen sulfide tester and has a wide application prospect in the field of gas detection.