39 results about "Halogen" patented technology

A flux without halogen, rosin and washing for Pb-free solder contains activating agent (8.0-15.0 Wt %), cosolvent (28-40), filming agent (0.1-1.0), corrosion retardant (0.1-0.5) and the solvent and deionized water (rest).

The present invention relates to novel electrode active materials represented by the general formula A_aM_b(XY₄)_cZ_d, wherein:

• • (a) A is one or more alkali metals, and 0<a≦8;
  • (b) M is at least one metal capable of undergoing oxidation to a higher valence state, and 1≦b≦3;
  • (c) XY₄ is selected from the group consisting of X′O_4−xY′_x, X′O_4−yY′_2y, X″S₄, and a mixture thereof, where X′ is P, As, Sb, Si, Ge, S, and mixtures thereof; X″ is P, As, Sb, Si, Ge, and mixtures thereof, Y′ is halogen, 0≦x<3, 0<y<4, and 0<c≦3; and
  • (d) Z is OH, a halogen, mixtures thereof, and 0<d≦6.

The invention provides a two-dimensional double perovskite material. The composition formula of the two-dimensional double perovskite material is AnMIIIMIX8, wherein A is organic amine; MIII is a trivalent metal element; MI is a monovalent metal element; and X is halogen. The two-dimensional double perovskite material has certain advantages of methylamine lead-iodine perovskite and lead-free double perovskite. The material is lead-free and environmentally friendly, has very good light stability and good chemical stability, and is unlikely to deteriorate in air. The material has a suitable andadjustable light absorption band gap, and more importantly can be used for preparing a film at a low temperature by a solution method. The advantages provide basis for the application of the materialin the photovoltaic fields such as solar cells, optical detectors and light-emitting diodes.

Disclosed are compounds having the structure:

wherein Z is —OH or —O•; and

A is:

wherein

• • • X and Y are independently NR₁ or O, where
    • R₁ is H or C₁-C₄ alkyl; and
    • R₂ is H, C₁-C₄ alkyl or t-butoxycarbonyl,
    • wherein W is C₃-C₄ alkynyl; and
    • R₁ is H or C₁-C₄ alkyl, or
    • wherein R₁ is H, C₁-C₄ alkyl, or C₃-C₄ alkynyl; and
      • R₃ is H, OH, O(C₁-C₄ alkyl), or a halogen,

optically active enantiomers, pharmaceutically acceptable salts of the compounds, pharmaceutical compositions containing such compounds or salts, and processes for their preparation. The subject invention also provides methods of alleviating symptoms of neurologic, autoimmune, and inflammatory disorders caused by the presence of reactive oxygen species, methods of preventing oxidation of lipids, proteins, or deoxyribonucleic acids on a cellular level, and methods of protecting human red blood cells from lysis by O₂ radicals.

The invention discloses a halogen-free flame retardant and a preparation method thereof and a flame-retardant polyolefin composition composed of the same. The structural formula of the halogen-free flame retardant is shown in the description, wherein the ratio of x to y to z is 1:(5-10):(1-5). The preparation method comprises the steps that melamine, phosphoric acid and piperazine are weighed and put into a high-speed mixer of which the top is provided with a liquid spray device to be stirred and mixed to be uniform, and a halogen-free flame retardant premixed material is obtained; the halogen-free flame retardant premixed material is subjected to a high-temperature dehydration condensation reaction, and the polyphosphoric acid-melamine-piperazine composite salt halogen-free flame retardant is obtained. The halogen-free flame retardant with the composite salt structure has the advantages that the halogen-free flame retardant is good in heat stability, high in phosphorus content and free of impurities such as halogens and inorganic salts, and the index of whiteness is larger than 90; few synthesizing process steps are needed, operation is simple and easy to carry out, the requirement on equipment is low, and the product yield reaches up to 80% or above; the flame-retardant polyolefin composition containing the halogen-free flame retardant has the good flame-retardant property, high water-resistant and heat-resistant properties and the excellent pigmenting property.

A sealing material for optical elements with excellent transparency, crack resistance, and heat resistance which can produce a cured product of the sealing material and a sealed optical element are provided. The sealing material for optical elements comprising a compound with a ladder structure, which contains a repeating unit of the following formula (A) in the molecule as a major component, the compound being obtained by condensing a compound (1) shown by the formula, R¹Si(OR³)_P(X¹)_3-p, and a compound (2) shown by the formula, R²Si(OR⁴)_q(X²)_3-q, at a molar ratio of 1:9 to 10:0 in the presence of a phosphoric acid catalyst,

wherein R¹ represents a group having a reactive functional group, R² represents an alkyl group having 1 to 20 carbon atoms, R³ and R⁴ individually represents an alkyl group having 1 to 6 carbon atoms, X¹ and X² individually indicate a halogen atom, p and q individually represent an integer from 0 to 3, and l, m, and n individually represent 0 or an arbitrary integer, provided that l and n are not 0 at the same time.

The invention discloses a flame-retardant polybutylene terephthalate (PBT) composite material, which is prepared by taking a mixture of montmorillonite and polytetrafluoroethylene as an organic synergistic flame retardant and cooperating with a nitrogen containing flame retardant, and a preparation method thereof. The composite material comprises the following components in percentage by weight: 45-70 percent of polybutylene terephthalate, 1-10 percent of nano-sized organic montmorillonite and 10-30 percent of glass fiber which is subjected to surface treatment, and 10-30 percent of nitrogen containing flame retardant, wherein the nano-sized organic montmorillonite is montmorillonite mineral powder processed by an alkyl intercalating agent; and the glass fiber is alkali-free glass fiber processed by a coupling agent. The preparation method comprises the following steps of mixing the components, antioxidant and lubricating agent; melting, blending and extruding the mixture by a double-screw extruder to obtain the polybutylene terephthalate composite material which has high performance and is synergistically filled by montmorillonite and glass fiber. The composite material is high in modulus, good in toughness, high in temperature resistance and high in CTI value; the processing environment is friendly; the composite material are free of halogen and phosphorus, meets an ROSH (The Restriction of the use of Certain Hazardous Substances in Electrical and Electronic Equipment) principle, and is widely applied to the field of engineering plastics.

Disclosed is a rubber composition for forming a core of a solid golf ball, the composition containing a base rubber (A); a filler (B); an organic peroxide (C); and a dry blend and/or a solvent slurry blend (D) of an unsaturated carboxylic acid metallic salt and a metal-containing organic sulfur compound represented by the following formula (1): 1 (wherein X represents a halogen atom, each of m and n represents an integer of 0 to 5 inclusive, and M represents a divalent metallic atom). The rubber composition exhibits high curing rate, and can be cured within shorter time, whereby productivity of a core can be improved.

The invention discloses aliphatic polyester-b-poly(ethylene oxide-co-propylene epoxide) amphipathy block copolymers side hydrophilic chains of which are provided with different functional groups, and a preparing method of the copolymers. The functional groups comprise halogen, azido, amino, carboxyl, and other groups. P(EO-co-ECH) is synthesized under mild reaction conditions through a controllable anionic coordinate polymerization method. A random copolymer (P(EO-co-Glycidyl Azide)) side chains of which is provided with the azido is obtained by azidation of the halogen on the P(EO-co-ECH). An amphipathy block copolymer the side hydrophilic chains of which are functionalized is obtained by subjecting the P(EO-co-Glycidyl Azide) and an aliphatic ester monomer to ring opening polymerization. Through reduction and click chemistry reactions, the azido of the block copolymer is converted, so as to obtain a series of amphipathy block copolymers the side hydrophilic chains of which are provided with the different functional groups such as amino and carboxyl are obtained.

A naphtha reforming catalyst, comprising an alumina support and following components with the content calculated on the basis of the support: VIII group metal 0.1-2.0% by weight, VIM group metal 0.1-3.0% by weight, sulfate ion 0.45-3.0% by weight, and halogen 0.5-3.0% by weight. The catalyst is used in a naphtha reforming reaction without presulfurization and has a high aromatization activity and a selectivity.

The present invention relates to sodium condensation process for synthesizing alkyl cyclohexyl diphenyl alkoxyl silane. After metal sodium is dissolved in solvent through heating and stirring inside a reactor, halogenated cyclohexane and RaXbSi(OR' )c, where, R is CH3, R' is CH3- or C2H5-, X is Cl or Br, a is 0 or 1, b is 1, 2 or 3, c is 1, 2 or 3, and a+b+c=4, in certain proportion are dropped into the system to produce sodium condensation reaction. Through maintaining for some time, filtering or vacuum distillation to obtain coarse product, and decompression fractionation, the product is obtained. The process has facile materials, simple operation, short reaction period, high safety and high yield.

The invention discloses a composite environment-friendly flame retardant for PC (Poly Carbonate) and PC flame retardant plastic. The composite environment-friendly flame retardant is composed of the following components in parts by weight: 10-20 parts of Phosphonic acid, P-[(trimethylsilyl)methyl]-, dimethyl ester, 30-50 parts of melamine cyanurate, 10-20 parts of tri-oxidation bi-antimony, and 40-60 parts of dimethyl methylphosphorate. The PC flame retardant plastic is composed of the following components in parts by weight: 100 parts of PC resin and 6-10 parts of composite environment-friendly flame retardants for the PC. The composite environment-friendly flame retardant for the PC does not contain halogen, has a good flame retardant function, and is mainly taken as engineering plastics to be widely applied to transparent materials, parts of electric appliances, medical equipment, machinery housing and the like.

Provided are a coloring composition which makes it possible to providing a color filter having surface unevenness relieved; and a cured film, a color filter, a method for manufacturing the color filter, a solid-state imaging device, and an image display device, each of which uses the coloring composition. The coloring composition includes a colorant compound represented by General Formula (1), a curable compound, and a solvent, in which one of Ar¹ and Ar² is a group represented by General Formula (2), and the other of Ar¹ and Ar² is a hydrogen atom, a group represented by the following General Formula (2), or the like, R⁵ and R⁶ each independently represent a hydrogen atom or the like, R⁷ represents a monovalent substituent, R⁸ represents a halogen atom or the like, and p represents an integer of 0 to 4, R¹ and R² each independently represent an alkyl group having 3 or more carbon atoms, or the like, and X¹ to X³ each independently represent a hydrogen atom or the like. The colorant compound represented by General Formula (1) has a counter anion inside and/or outside the molecule.

The invention relates to a halogen free thermosetting resin composition, and a prepreg, a laminated board, a metal foil layer-coated laminated board and a printed circuit board using the halogen freethermosetting resin composition. Based on 100 weight parts of an organic solid matter, the halogen free thermosetting resin composition comprises the following components: (A) 25 to 55 weight parts ofphosphorus-containing epoxy resin, (B) 10 to 35 weight parts of styrene-maleic anhydride polymer, and (C) 20to 50 weight parts of biphenol fluorene benzoxazine resin. The laminated board which is prepared by adopting the halogen free thermosetting resin composition has high glass transition temperature, low low dielectric constant, low dielectric loss factor, low thermal expansion coefficient, high heat resistance, low water absorption, good flame retardance, processability and chemical resistance.

The present invention relates to antimalarial agents. In particular, the present invention relates to the use of bisbenzimidazoles of Formula I for the prevention and/or treatment of malaria,

wherein n is an integer selected from 0 to 10, and

• R¹ and R² are each independently selected from hydrogen, halogen, hydroxyl, alkyl, alkoxy, amino, alkylamino, alkylcarbonylamino, alkylcarbonyloxy, formyl, alkylcarbonyl, alkyloxycarbonyl, halocarbonyl, haloalkyl, haloalkoxy, carbamoyl, cyano, nitro, sulfo, or a carboxyl group.

The invention relates to a low-halogen low-shrinkage epoxy resin liquid packaging material for manufacturing an integrated circuit. The packaging material is prepared from the following components inpercentage by weight: 30-40% of low-chlorine epoxy resin, 5-10% of organic silicon modified epoxy resin, 12-28% of a toughening agent, 5-10% of a curing agent, 3-6% of an accelerant, 4-8% of a thixotropic agent, 22-35% of a filler, 1-2% of a wetting agent, 1-2% of a defoaming agent and 1-2% of a pigment. The low-viscosity and good-shape-preserving liquid packaging material is convenient for construction and can be cured within 0.5-1 hour at about 120 DEG C. The halogen content of the cured packaging material is less than 800ppm, the curing shrinkage rate is less than 2%, the insulation resistance is greater than 10<14> omega.cm, and the water absorption rate is less than 1%. The packaging material can be widely applied to packaging of integrated circuits of electronic watches, clocks, calculators, household appliances and the like.

Provided is a quinone derivative represented by general formula (1). In general formula (1), R1 represents a group selected from the group consisting of an optionally substituted alkyl group having 1-8 carbon atoms, an aryl group that has 6-14 carbon atoms and that may comprise an alkyl group having 1-6 carbon atoms, and a cycloalkyl group having 3-20 carbon atoms. These groups may be substitutedwith one or more halogen atoms. The two R1 may be the same or different from each other. R2 represents a hydrogen atom, an optionally substituted alkyl group having 1-6 carbon atoms, an aryl group having 6-14 carbon atoms, a cycloalkyl group having 3-20 carbon atoms, or an optionally substituted heterocyclic group having 3-14 carbon atoms. The two R2 may be the same or different from each other.

A copolymer which yields a coated film with high transparency when formed into a coated film, and adds a regenerable antibacterial effect, as well as a resin composition containing the same. The copolymer includes: a repeating unit represented by the following formula (I) (wherein R₁ represents a hydrogen atom or a methyl group; R₂ represents a hydrogen atom or a saturated or unsaturated alkyl group having 1 to 18 carbon atoms; R₁₁ to R₁₄ each independently represent a hydrogen atom or an alkyl group, provided that at least 2 of R₁₁ to R₁₄ represent an alkyl group, and that R₁₁ and R₁₂, or R₁₃ and R₁₄ can bond together to form a ring; X represents —O— or —NR₂—; R₂₀ represents a hydrogen atom or an alkyl group; Y represents a halogen atom; and n represents 0 or 1), and a repeating unit having a crosslinkable functional group.

Disclosed is an arylphenoxy catalyst system for producing an ethylene homopolymer or copolymers of ethylene and a-olefins, and a method of producing an ethylene homopolymer or copolymers of ethylene and a-olefins having a high molecular weight under a high temperature solution polymerization condition using the same. The catalyst system includes a group 4 arylphenoxy-based transition metal catalyst and an aluminoxane cocatalyst or a boron compound cocatalyst. In the transition metal catalyst, a cyclopentadiene derivative and arylphenoxide as fixed ligands are located around the group 4 transition metal, arylphenoxide is substituted with at least one aryl derivative and at least one halogen compound, and is located at the ortho position thereof, and the ligands are not crosslinked to each other. The catalyst includes environmentally friendly raw materials, synthesis of the catalyst is economical, and thermal stability of the catalyst is excellent. It is useful for producing an ethylene homopolymer or copolymers of ethylene and a-olefins having various physical properties in commercial polymerization processes.

The invention provides diacetyl tartaric acid ester of mono(di)glyceride fried bread stick bulking agents. The diacetyl tartaric acid ester of mono(di)glyceride fried bread stick bulking agents are characterized in that the fried bread stick bulking agents include, by weight, 10-20 parts of diacetyl tartaric acid ester of mono(di)glyceride, 30-50 parts of sodium bicarbonate, 15-26 parts of octadecyl amine acetate, 1-2 parts of sodium benzylnaphtthalene sulfonate, 1-2 parts of polyethylene wax, 1-2 parts of chlorinated paraffin, 1-2 parts of lecithin, 1-2 parts of calcium chloride, 1-2 parts of sodium polyacrylate, 1-2 parts of ammonium chloride, 1-2 parts of alkyl phosphoric acid sodium salt, 1-2 parts of halogen phosphate and 1-2 parts of alkyl polyoxyethylene ether. The diacetyl tartaric acid ester of mono(di)glyceride fried bread stick bulking agents have the advantages that raw materials are easy to get, and the bulking agents are low in cost, free of aluminum, friendly to environment, convenient to use and good in effect.

The invention relates to the field of medical chemistry, and aims at providing a substituted furan chalcone derivative and a preparation method thereof. The substituted furan chalcone derivative has the structure shown in a formula (I): wherein B ring is selected from phenyl, furyl or thienyl; R1, R2, and R3 are respectively and independently selected from hydrogen atom, halogen, hydroxyl, cyan, nitro, C1-C7 alkyl chain, C1-C7 alkoxy, and dimethylamino or diethylamino. The product is a kind of natural furan chalcone analogues with a new framework, the product has potential medicament activity, and the preparation of the compound can provide support for activity researches of furan chalcone medicaments. The preparation method has simple steps and low loss late, and provides a brand new route for synthesis of the furan chalcone derivative from nonaromatic raw materials. The method has an important meaning for industrial production.

The preparation of halosilanes having mixed-halogen substituents is described comprising providing an aryl-halo-silane having one more first halogens and one or more aryl groups, and substituting one or more of said aryl groups of said aryl-halo-silane with a second halogen having an atomic number greater than that of said first halogen.