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506 results about "Chlorine atom" patented technology

Chlorine is an atom that has 17 protons and usually either 18 or 20 neutrons in its nucleus and 17 electrons circling around its nucleus.

Polyhaloalkyl ether derivatives as well as liquid crystal compositions and liquid crystal display elements containing them

A compound expressed by the general formula (1):wherein R1 denotes an alkyl group having from 1 to 20 carbon atoms in which one or more methylene groups in said group may be replaced by oxygen atoms or -CH=CH- and one or more hydrogen atoms in said group may be replaced by flourine or chlorine atoms, with the proviso that two or more methylene groups may not be continuously replaced by oxygen atoms,Y1 denotes an alkoxy group having 1 to 5 carbon atoms, in which at least one hydrogen atom is replaced by a fluorine atom and one or more hydrogen atoms may be further replaced by chlorine atoms,Z1, Z2 and Z3 each independently denote a covalent bond, -CH2CH2-, -CH=CH-, -COO- or -CF2)-, with the proviso that at least one of Z1, Z2 and Z3 is -COO- or -CF2O-,rings A1, A2, A3 and A4 each independently denote trans-1,4-cyclohexylene, 3-cyclohexen-1,4-ylene, 3-fluoro-3-cyclohexen-1,4-ylene, pyrimidine-2,5-diyl, 1,3-dioxan-2,5-diyl, trans-1-sila-1,4-cyclohexylene, trans-4-sila-1,4-cyclohexylene, or 1,4-phenylene in which one or more hydrogen atoms may be replaced by fluorine atoms or chlorine atoms,andm and n denote 0 or 1,with the proviso that when Z1, Z2 or Z3 is -CF2O-, then at least two groups selected from rings A1, A2, A3 and A4 directly bonded to -CF2O- are both 1,4-phenylene in which one or more hydrogen atoms may be replaced by fluorine atoms or chlorine atoms, and any of the rings A1, A2 and A3 bonded with the carbon atoms of -CF2O- is 1,4-phenylene in which at least one hydrogen atom is replaced by fluorine or chlorine atoms.
Owner:JNC CORP

Fluorochloro Ionomers

This invention discloses novel fluorochloro ionomers and processes of making them. The first preferred body of invention is perfluorochloro ionomers having (1) equivalent weight between 600 and 1500, preferably between 800 and 1200, and most preferably between 900 and 1100; (2) chlorine content between 8% and 30% by weight. These ionomers are breathable and excellent barrier materials, capable of being processed into thin films or membranes and are well suited for low humidity or high temperature fuel cell applications and for chemical protective covering materials. The second preferred body of invention is partially fluorochloro ionomers having (1) moisture vapor permeability rate >3000 gram H2O / m2 / day (about ½ mil thick film); (2) chlorine content of between 10% and 39% by weight. These ionomers are breathable and excellent barrier materials that can also be processed into thin films or membranes and are suited for some fuel cell applications and more preferably for breathable protective covering applications. The membranes can be monolithic films or multi-layers films, or composite films, or bipolar membranes. These novel fluorochloro ionomers are made by radical copolymerization of at least one fluorochloro monomer and at least one comonomer consisting of at least ionic group or at least one precursor that can be converted to ionic groups such as acid groups or amines or quaternary amine groups. The said fluorochloro monomer containing at least one fluorine and at least one chlorine atom is free radical polymerizable including chlorotrifluoroethylene (CFCl═CF2) and dichlorodifluoroethylene (CFCl═CFCl).
Owner:ZHEJIANG HYPROOF TECH CO LTD

Double base compound based on phosphonitrile and triazine group and preparation method of double base compound

The invention discloses a double base compound based on phosphonitrile and triazine group. A preparation method of the double base compound comprises the following steps: introducing a triazine group into phosphonitrilic chloride trimer with intrinsically flame retardant property, and substituting six chlorine atoms on the side chains; further introducing a compound containing diamido or dyhydroxyl into the side chains of the triazine group, so as to obtain the double base compound based on phosphonitrile and triazine group. The compound is enriched in elements N and P; because the compound simultaneously contains the phosphonitrile and triazine group, the compound can achieve a flame-retardant effect in the combustion process by virtue of gas phase flame retardance and condensed phase mechanisms and has an excellent char-forming effect, and the generated carbon layer has the effects of insulating heat and inhibiting oxygen and achieves the effects of intumescent flame retardants. In addition, the phosphonitrile and triazine group have a synergistic flame retardant effect in the matrix combustion process. Moreover, the compound is high in heat stability, char-forming rate and processability and can be widely applied to flame-retardant modification of various high polymer materials.
Owner:杭州志合新材料有限公司

Polythioetherimide and preparation method thereof

InactiveCN101531758AReduce manufacturing costReduce synthesis reactionFiberAdhesive
The invention relates to polythioetherimide and a preparation method thereof. The method is characterized by comprising the following steps: mono-substituted phthalic anhydride isomer with structural formula II is adopted as a reaction material to react with organic diamine NH2RNH2 with half mol equivalent weight at the temperature of about 100 DEG C to about 350 DEG C to generate binary-substituted phthalimide; then binary-substituted phthalimide and sulfur with about equimolar equivalent weight are subjected to coupling polymerization reaction at the temperature of about 60 DEG C to about 260 DEG C under the existence of reducing agent, catalyst and reaction auxiliary agent to generate polythioetherimide resin with structural formula I; and the molecular weight of the resin can be adjusted by end capping agent. The preparation method can greatly reduce the preparation cost and reaction steps, the whole process is more reasonable and practical, and the obtained resin has superior comprehensive properties such as good heat resistance, mechanical properties, melting processing property and the like, can be widely applied in the related fields such as high-temperature resistant engineering plastics, films, adhesives, enameled wires, foamed plastics, fiber, advanced composite materials and the like; in the structural formula II, A substituent is chlorine atom or nitro at 3-bit or 4-bit; and in the structural formula I, R is substituted or unsubstituted organic group.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI +1

Phosphoric-acid-doped cross-linked polybenzimidazole high-temperature proton exchange membrane and preparation method thereof

The invention relates to a phosphoric-acid-doped cross-linked polybenzimidazole high-temperature proton exchange membrane and a preparation method thereof, and belongs to the technical field of special polymer functional membranes. The preparation method comprises the steps of dissolving polybenzimidazole and hyperbranched polymer poly(p-chloromethyl styrene) in an organic solvent according to a certain ratio; then adding a hyperbranched polymer solution into a polybenzimidazole solution; fully mixing and filtering a mixed solution, and then pouring the mixed solution on a clean glass plate toform a film; and then carrying out drying after soaking in a phosphoric acid solution at a certain temperature for a certain time. The hyperbranched polymer rich in chlorine atoms is used as a cross-linking agent, the cross-linking degree can be adjusted by adjusting the percentage of the branched polymer in an imidazole group, and a three-dimensional net structure is formed in the film forming process; and meanwhile, the residual chlorine atoms in the cross-linking reaction can be converted into functional groups beneficial to proton conduction. The phosphoric-acid-doped cross-linked polybenzimidazole high-temperature proton exchange membrane prepared by the method has excellent mechanical strength and proton conduction capability and can be used for a high-temperature proton exchange membrane fuel cell.
Owner:JILIN UNIV

Photoinitiator contaning asymmetic hexaaryl bis imidazole and preparation method thereof

The invention discloses a photoinitiator containing asymmetric hexa-aryl diimidazole and a preparation method thereof. The invention mainly solves the problems that a photoinitiator containing symmetric hexa-aryl diimidazole is not sensitive to long-wave ultraviolet light and visible light during a photo-curing process; and the residual photoinitiator is migrated to the surface of photoresist material after photo-curing to form an atomization phenomenon, thereby impacting the quality, and production, use environment and the like of a photoresist product, and restricting the application of the photoinitiator in the field of microelectronic material. The preparation method adopts the main raw materials of 3, 4-dialkoxy benzaldehyde, benzaldehyde, and the benzaldehyde having the substituent of fluorine or chlorine atoms. The photoinitiator containing asymmetric hexa-aryl diimidazole is obtained through a plurality of synthesis steps such as benzoin synthesis, benzyl synthesis, and the like. The alkoxy and fluorine or chlorine atoms with higher activity are introduced into the asymmetric hexa-aryl diimidazole to improve the solubility of the photoinitiator. In addition, the photoinitiator has good absorption of ultraviolet light and visible light, reconditions and improves the production and application environment of the photoresist product, and reduces the emission of pollutants.
Owner:CHANGZHOU TRONLY NEW ELECTRONICS MATERIALS
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