581 results about "Phosphinate" patented technology

The invention relates to a preparation method of a fire retardant, in particular to a dialkyl metal phosphinate and a synthesis process of a fire retardant thereof. The dialkyl metal phosphinate has a structural formula described in the specification, wherein R1 represents alkyl, M represents metal ions, n represents an integer from 1 to 3, and R2 represents olefin of aliphatic series. The preparation method comprises the steps of: reacting alkylphosphonous dichloride with alcohol to obtain monoalkyl phosphate; carrying out radical reaction on the monoalkyl phosphate with olefin to obtain dialkyl ester phosphinate; and reacting the dialkyl ester phosphinate with lewis acid to obtain the dialkyl metal phosphinate fire retardant. The invention has mild reaction condition; the prepared product has good thermal stability and high yield, wherein the yield can reach 87.6 percent by the count of methyl butyl ester phosphate; and the preparation method is suitable for industrialized production.

A composition comprises a compatibilized poly(arylene ether)/polyamide blend, an optional electrically conductive filler, a phosphinate, and flame retardant augment selected from the group consisting of melamine polyphosphate, zinc borate, low melting glass, talc, and combinations of two or more of the foregoing flame retardant augments.

Disclosed is a flame-retardant polyamide composition which has excellent mechanical properties such as toughness, excellent heat resistance and flow ability during reflow soldering, and good thermal stability during molding, without using a halogen flame-retardant. This flame-retardant polyamide composition exhibits stable flame retardance particularly when a thin article is molded. Specifically disclosed is a flame-retardant polyamide composition containing 20-80% by mass of a specific polyamide resin (A), 5-30% by mass of a phosphinate compound (B), and 0.01-10% by mass of a phosphazene compound (C).

An composition comprises a poly(arylene ether), a polyamide, electrically conductive filler, an impact modifier, and a phosphinate. The composition may be used in a variety of articles such as furniture, partitions, containers, and vehicle interiors.

A composition comprises a poly(arylene ether), a polyamide, a reinforcing filler, a phosphinate, and an optional impact modifier. The composition is made by melt mixing a poly(arylene ether), a compatibilizing agent, a polyamide, a reinforcing filler, an optional impact modifier, and a flame retardant masterbatch wherein the flame retardant masterbatch comprises a phosphinate and a thermoplastic resin.

Disclosed is a flame retardant resin composition which is excellent in flame retardance and greatly improved in electrical characteristics. Specifically disclosed is a resin composition composed of (A) a base resin (specifically, a polyester resin, a polyamide resin or the like), (B) a halogen flame retardant (specifically, a bromine-containing flame retardant such as a brominated polybenzyl(meth)acrylate resin or a brominated styrene resin), (C) an organic/inorganic acid salt, specifically an organic phosphinate (such as a metal salt or an aminotriazine compound salt) or an oxo acid salt (such as a polyphosphate or (pyro)sulfate) of a basic nitrogen-containing compound (such as an aminotriazine compound), and (D) an electrical characteristics improver, specifically an olefin resin (such as a-C2-3olefin-(meth)acrylate copolymer), a fluorine resin or a group IV metal compound (such as titanium oxide).

The invention relates to a surface precipitation-free flame-retardant polypropylene compound and a preparation method thereof. The surface precipitation-free flame-retardant polypropylene compound comprises the following components by weight percent: 70-98.5% of polypropylene resin, 1-15% of melamine hydrobromide, 0.3-7% of phosphinates, 0.2-4% of flame retardant synergist, 0-2% of synergetic flame retardant, 0-1% of antioxidant and 0-1% of processing acid. The preparation method thereof is implemented as follows: weighting the above components based on proportion, evenly mixing, melt-mixing the above mixture, pelletizing and drying to obtain the product in the invention. The surface precipitation-free flame-retardant polypropylene compound has high flame retardant efficiency, good flowability, no precipitation, and high flame retardant rating up to UL94 V-0, and can satisfy the use requirements of flame retardant materials in building materials, electrical appliance casings, sockets, bellows, lighting lamps and the like.

The invention discloses a preparation method and application of diethyl phosphinates, belonging to the field of green flame retardants. The preparation method of the diethyl phosphinates comprises the following steps of: making hypophosphorous acid and/or an alkali metal salt thereof react with ethylene under the irradiation of ultraviolet light in the presence of a photoinitiator in a solvent system to obtain diethyl phosphinic acid and/or an alkali metal salt thereof; and making the obtained diethyl phosphinic acid and/or the alkali metal salt thereof react with metallic compounds of Mg, Ca, Al, Sb, Sn, Ge, Ti, Zn, Ce, Sn and/or Fe to obtain corresponding diethyl phosphinates. In the invention, the photoinitiator is decomposed into free radicals under the irradiation of the ultraviolet light to initiate an additive reaction so that the reaction rate can be improved, the energy consumption required in the reaction can be reduced and the production cost of products can be lowered.

The present invention provides a halogen-free, flame retardant adhesive composition that exhibits excellent anti-migration properties, not only within single layer structures, but also within multilayer structures of much higher density such as copper-clad laminates.

The flame retardant adhesive composition according to the present invention comprises: (A) a halogen-free epoxy resin, (B) a carboxyl group-containing acrylic resin and/or a carboxyl group-containing acrylonitrile-butadiene rubber, (C) a curing agent, (E) specific phosphinate and/or diphosphonate compounds, and (F) an ion scavenger and/or a heavy metal deactivator.

A subject-matter of the invention is the use of a polyamide powder possessing a fireproofing property in a process for the manufacture of an object made of polyamide by sintering this powder using radiation, the said powder comprising, by weight, 2 to 40% of at least one flame retardant for respectively 98 to 60% of at least one polyamide, the flame retardant being a blend of at least one organic phosphinate of a metal and of at least ammonium polyphosphate.

One aspect of the invention is to provide a composition comprising a titanium dioxide particle having on the surface of said particle a substantially encapsulating layer comprising a pyrogenically-deposited metal oxide; said substantially encapsulating layer having on its surface at least one organic surface treatment material selected from an organo-silane, an organo-siloxane, a fluoro-silane, an organo-phosphonate, an organo-acid phosphate, an organo-pyrophosphate, an organo-polyphosphate, an organo-metaphosphate, an organo-phosphinate, an organo-sulfonic compound, a hydrocarbon-based carboxylic acid, an associated ester of a hydrocarbon-based carboxylic acid, a derivative of a hydrocarbon-based carboxylic acid, a hydrocarbon-based amide, a low molecular weight hydrocarbon wax, a low molecular weight polyolefin, a co-polymer of a low molecular weight polyolefin, a hydrocarbon-based polyol, a derivative of a hydrocarbon-based polyol, an alkanolamine, a derivative of an alkanolamine, an organic dispersing agent, or a mixture thereof. Another aspect of the invention is to provide processes for producing said composition.

The present invention relates to a flame resistant polyamide resin compositions for moulded articles and articles formed therefrom, comprising aromatic polyamide with phosphinate and/or diphosphinate flame retardant and, optionally, glass fibers. Further provided are articles for use in a variety of applications including electrical and electronic parts requiring electrical insulation.

The invention relates to an antistatic, halogen-free, and fire-retardant enhanced master batch dedicated for polyamide and a preparation method thereof. The fire-retardant master batch is composed of following components in parts by weight: 25 to 50 parts of PA, 15 to 30 parts of alkyl phosphinate fire-retardant, 15 to 30 parts of melamine polyphosphate fire retardant, 8 to 15 parts of zinc borate fire retardant, 4 to 6 parts of CTI improver, 1 to 1.5 parts of antistatic agent, 3 to 8 parts of flexibilizer, 0.5 to 1 part of coupling agent, 0.7 to 1.5 parts of lubricant, and 0.3 to 1 part of anti-oxidant. The sum of the weight ratio of components mentioned above is 100 wt%. The fire-retardant master batch is used to produce fire-retardant enhanced and modified nylon, meets standards of the United States underwriters laboratories (UL)-941.6mm and a higher V-0 grade, simultaneously achieves that glowing wire temperature (GWIT) is equal to or larger than 750 DEG C and the CTI value is equal to or larger than 600 V, also has a antistatic performance, meets European Union RoHS, International Electrotechnical Commission (IEC) halogen-free and Reach rule requirements, is easy to use and excellent in comprehensive performance, and does not affect color matching.

The present invention relates to a resin composition containing (A) a polyamide having a viscosity number (as measured in the 96% sulfuric acid according to ISO 307 (1997)) of from 50 ml/g to 250 ml/g; (B) a polyphenylene ether; and (C) a phosphinate represented by a particular formula. The resin composition according to the present invention is excellent in flame retardancy, impact resistance and thin-wall moldability and can significantly suppress gas generation during the molding process and substantially inhibit the generation of deposits on a mold during injection molding. As a result, a molded product thereof excellent in surface appearance can be provided.

A method of making a composition comprises melt mixing a first mixture comprising a poly(arylene ether) and a compatibilizing agent to form a first melt mixture; and melt mixing a second mixture comprising the first melt mixture and a polyamide, an electrically conductive additive and a flame retardant masterbatch wherein the flame retardant masterbatch comprises a phosphinate and a thermoplastic resin.

A flame-retardant glass fiber-reinforced polyamide resin composition, containing:

• • 100 parts by mass of a flame-retardant resin composition consisting of
    • (A) 60 to 90 percent by mass of a polyamide resin, and
    • (B) 40 to 10 percent by mass of a flame retardant containing no halogen atom,
    • (A)+(B) being 100 percent by mass; and
  • 60 to 210 parts by mass of a flattened glass fiber (C) having a flat section of 1.5-10 in a ratio of major axis/minor axis,
  • wherein the polyamide resin (A) contains a crystalline polyamide resin (a1) and an amorphous polyamide resin (a2),
  • the flame retardant containing no halogen atom (B) contains a phosphinate (b1) and/or a diphosphinate (b2), and
  • a blending ratio of the amorphous polyamide resin (a2) in the polyamide resin (A) is 0.1≦(a2)/(A)≦0.5.

The present invention relates to preparation process of phosphine oxamate and its derivatives, and is especially preparation process through Michael addition reaction of methyl phosphinate and acrylaldehyde. The present invention features the condensing agent for the reaction of proper weak acid and the three step reaction for preparing phosphine oxamate product. Adopting weak acid as the condensing agent can obtain high yield and high purity of phosphine oxamate product. Adopting weak acid as the condensing agent to replace anhydride and using no alcohol can lower the production cost.

The present invention relates to a thermoplastic flame retardant composition comprising a specific flame retardant system based on phosphinates and melamine derivatives. Such compositions are especially useful in the preparation of articles for use in the field of electrical or electronic connectors.

Disclosed is a halogen-free flame retardant thermoplastic polyurethane composite resin composition. The disclosed flame retardant thermoplastic polyurethane composite resin composition is capable of improving flame retardancy and flaming-drip of a thermoplastic polyurethane resin through desirable formation of char during combustion, which uses a phosphinate, a diphosphinate and/or a polymer thereof, dipentaerythritol, talc, a melamine derivative, etc., instead of a halogen-based flame retardant, as a flame retardant.

Disclosed are compounds of the formula:

wherein R₁, R₂, R₃ and R₄ are independently hydrogen, C₁-C₆ alkyl, halo, a sulfate, a glucuronide, —OH, a bulky group, aryl, cycloalkyl, heteroaryl, heterocycloalkyl, —N(CH₂)_n; a phosphate group, and a phosphinate group; R₉ is hydrogen, halogen or alkyl; R₁₁ is selected from the group consisting of H, C₁-C₆ alkyl, halogen, a sulfate, a glucoronide, —SO₂NH₂, —COOH, —CN, —CH₂CN—, —NHCN—, —CHO, ═CHOCH₃, —COO salt, —OSO₂alkyl, —NH₂, and —NHCO(CH₂)_n; R₁₂ is selected from the group consisting of H, a C₁-C₆ alkyl, a sulfate, a glucoronide, a bulky group, aryl, cycloalkyl, heteroaryl and heterocycloalkyl; X is selected from the group consisting of C₁-C₁₂ alkyl, C₂-C₁₂ alkenyl, C₂-C₁₂ alkynyl, halogen, a glucoronide, —NH₂, —SO₂NH₂, —COOH, —CN, —CH₂CN, —NHCN, —CHO, —COOsalt, —OSO₂alkyl, —SH, —SCH₃, —CH[(CH₂)_nCH₂]COOCH₂, —(CH₂)_mCOOCH₃, —(CH₂)_m—O—CH₃, —(CH₂)_m—O—(CH₂)_nCH₃, (CH₂)_m—S—CH₃, —(CH₂)_m—S—(CH₂)_nCH₃, —(CH₂)_m—NH—(CH₂)_nCH₃, —C₂-C₈ alkenyl-O—(CH₂)_nCH₃, —C₂-C₈ alkenyl-S—(CH₂)_nCH₃, —C₂-C₈ alkenyl-N—(CH₂)_nCH₃, —C₂-C₈ alkynyl-O—(CH₂)_nCH₃, —C₂-C₈ alkynyl-S—(CH₂)_nCH₃, —C₂-C₈ alkynyl-N—(CH₂)_nCH₃, —(CH₂)_m—OH, —(CH₂)_m—O—NH₂, —(CH₂)_m—S—NH₂, —NH(CH₂)_mCH₃, —NH(CH₂)_mOCH₃, —NH(CH₂)_mCHOH—COOH, —N(CH₃)₂, —(CH₂)_m(NH)CH₂OH, —NHCOOH, —(CH₂)_mNHCOOH, —NO₂, —SCN, —SO₂alkyl, —B(OH)₂, —(CH₂)_m N(CH₃)—SO₂—NH₃, —(CH₂)_m—NH—SO₂—NH₂, —NHC(═S)CH₃, and —NHNH₂; and Y is selected from hydrogen, ═O, —OCO(R₆) and —OH; wherein m is an integer between 0-20, n is an integer between 0-8, the symbol represents either a single or a double bond capable of forming a keto group at position 3 or 17; and the symbol represents any type of bond regardless of the stereochemistry; and the respective enantiomers, other stereochemical isomers, hydrates, solvates, tautomers and pharmaceutically acceptable salts of said compounds. The compounds are useful in the treatment of various types of cancer.

A thermoplastic polyester composition comprising, based on the total weight of the composition, a chlorine- and bromine-free combination of: from 40 to 60 wt % of a modified poly(1,4-butylene terephthalate); from 25 to 35 wt % of a reinforcing filler; from 2 to 8 wt % of a flame retardant synergist selected from the group consisting of melamine polyphosphate, melamine cyanurate, melamine pyrophosphate, melamine phosphate, and combinations thereof; from 5 to 15 wt % of a phosphinate salt flame retardant; from more than 0 to less than 5 wt % of an impact modifier component comprising a poly(ether-ester) elastomer and a (meth)acrylate impact modifier; from more than 0 to 5 wt % poly(tetrafluoroethylene) encapsulated by a styrene-acrylonitrile copolymer; from more than 0 to 2 wt % of a stabilizer; wherein the thermoplastic polyester composition contains less than 5 wt % of a polyetherimide.