Showing papers on "Triphenyl phosphate published in 1997"

Flame retardant composition for polymers

Abstract: The present invention is a flame retardant composition, adapted to be mixed with a polymer substrate to confer flame retardancy on the substrate, which comprises: (a) a bicyclic phosphorus flame retardant compound, such as one containing one or more pentaerythritol phosphate alcohol moieties, as exemplified by bis(pentaerythritol) phosphate alcohol) carbonate; (b) an intumescent flame retardant compound containing nitrogen and phosphorus, such as melamine phosphate; and (c) a monophosphate ester compound to enhance the charring and processing characteristics of the composition in the polymer substrate, such as a liquid aryl-group containing phosphate ester compound, and the monophosphate ester compound is triphenyl phosphate.

Halogen-free flame resistant polystyrol moulding materials

Abstract: Thermoplastic moulding material containing, in relation to the sum of A to E, at least 3 but no more than 30 wt.% polyphenylene ether A; at least 10, but no more than 65 wt.% of shock resistant modified styrol polymerizates B; at least 30 wt.% of a non shock resistant modified (standard) styrene; between 0.05 and 5 % of a radical former D, 1-20 wt.% of a flame protection agent E, especially a phosphoroorganic compound such as triphenyl phosphate or triphenyl phosphine oxide.

Methacrylic resin composition

Abstract: PROBLEM TO BE SOLVED: To obtain a methacrylic resin composition, comprising a specific methyl methacrylate-based resin and a phosphoric ester-based compound in a specific proportion, excellent in flame retardance, weatherability and heat resistances without causing fire dripping when burning and useful for various lighting covers, sound insulating plates, etc. SOLUTION: This methacrylic resin composition comprises (B) 2-18 pts.wt. phosphoric ester-based compound such as a halogenated phosphoric ester condensate or triphenyl phosphate in (A) 100 pts.wt. methyl methacrylate-based resin composed of (A1 ) 98-88wt.% methyl methacrylate unit and (A2 ) 2-12wt.% polyfunctional allyl compound unit such as allyl (iso)cyanurate. The composition is prepared so as to provide <=24 pts.wt. total amount of the components A2 and B based on 100 pts.wt. component A1 .

Expandable styrene polymers containing halogen-free flame retardants

Abstract: Expandable styrene polymer (EPS) particles (I) containing a volatile blowing agent (II) and at least 12 wt% fire retardant (III) consisting of a mixture of (A) a phosphorus compound and (B) a water-releasing metal hydroxide. Also claimed are (i) processes for the production of (I), (ii) a process for the production of polystyrene (PS) foam particles by foaming (I), and (iii) PS foam particles with a particle size of 2-10 mm and a density of 10-50 g/l, containing 12-30 wt% mixture (III). Preferably component (B) is magnesium or aluminium hydroxide, and (A) is red phosphorus or an organic or inorganic phosphate, phosphite or phosphonate, especially triphenyl phosphate, diphenyl cresyl phosphate, ammonium polyphosphate or diphenyl phosphate. Wt. ratio (B):(A) = (1:1)-(1:5). (I) contains 3-10 wt% (II), preferably a 4-6C aliphatic hydrocarbon.

Flame retardant polyolefin-based resin composition

Abstract: PURPOSE: To obtain the subject composition, comprising a polyolefin-based resin, a thermally expandable graphite and a phosphorus-based flame retardant, having excellent flame retardance and hardly deteriorating mechanical characteristics without emitting a halogen-based gas in burning or processing. CONSTITUTION: This flame retardant polyolefin-based resin composition comprises (A) 100 pts.wt. polyolefin-based resin (e.g. a polypropylene-based or a polyethylene-based resin), (B) 1-30 pts.wt. thermally expandable graphite containing 60-80wt.% particles having >=80 mesh particle diameter and (C) 1-20 pts.wt., preferably 3-15 pts.wt. phosphorus-based flame retardant (e.g. triphenyl phosphate, methylphosphonic acid, sodium phosphate or red phosphorus). Furthermore, the thermally expandable graphite is preferably treated with an acid and then neutralized with ammonia, an aliphatic lower amine, an alkali(ine earth) metallic compound, etc., for use in the component (B). When the red phosphorus is used in the component (C), the surfaces of the red phosphorus particles are preferably coated with a resin.

Flame-retardant polycarbonate composition

Abstract: PROBLEM TO BE SOLVED: To obtain the subject composition having excellent heat resistance and heat stability and improved safety, useful as an optical material, etc., by adding an organic sulfonate, etc., in an amount to make a specific polycarbonate copolymer flame-retardant. SOLUTION: This composition is obtained by compounding a polycarbonate copolymer comprising 5-95 mol.% of 9,9-bis(4-hydroxy-3-methylphenyl)fluorene and 95-5 mol.% of a hydroxyl component of the formula (R to R are each H, a 1-9C hydrocarbon, etc. W is a single bond, a 1-20C hydrocarbon, etc.) [e.g. 2,2,-bis(4-hydroxyphenyl)propane, etc.] per the whole aromatic dihydroxyl component with one or more compounds (e.g. potassium sulfonate of diphenylsulfone, thorium lauryl sulfate, triphenyl phosphate, etc.) selected from an organic sulfonate, an organic sulfuric acid ester salt, a phosphoric acid ester and a phosphonic acid ester in an amount to make the polycarbonate flame-retardant.

Flame-retardant polyolefin resin molding

Abstract: PROBLEM TO BE SOLVED: To improve the flame retardancy and control the generation of smoke by adding an inorganic filler and a halogenated flame retardant or a phosphorus- containing flame retardant each in a specified amount to a polyolefin resin. SOLUTION: This resin molding is obtained by mixing 100 pts.wt. polyolefin resin comprising, e.g. polypropylene with 50-150 pts.wt. inorganic filler, and 5-50 pts.wt. halogenated flame retardant or phosphorus-containing flame retardant and molding the mixture. Examples of the inorganic filler used include metal hydroxides such as magnesium hydroxide, and metal carbonates such as calcium carbonate, among which a hydroxide is advantageously used from the viewpoints of heat absorption due to dehydration reaction and an effect of controlling combustion due to the release of the water of crystallization. Examples of the flame retardant used include halogenated flame retardants comprising brominated flame retardants such as a brominated epoxy compound, and chlorinated flame retardants such as a chlorinated polyethylene. It is desirable to use a halogenated flame retardant with a metal hydroxide serving as a halogen acceptor. Examples of the phosphorus-containing flame retardant used include a mixture of red phosphorus and titanium oxide for preventing discoloration, and phosphate flame retardants comprising, e.g. triphenyl phosphate.

Aqueous high‐temperature chemistry of organophosphorus compounds

Abstract: Tripropyl phosphate, triethyl phosphonoacetate, triphenyl phosphate, diethyl 2‐methylbenzyl‐phosphonate, diethyl 1‐naphthylmethylphosphonate and diethyl (4‐biphenylmethyl)phosphonate were chosen as analogs of military nerve gases. The six organophosphorus compounds were treated in neutral superheated water at sub‐ and supercritical temperature. The products of hydrolysis were identified and the potential application of aquathermolysis for the detoxification of potent military warfare agents is outlined.

Flame-retardant composition for polyurethane foam

Abstract: PROBLEM TO BE SOLVED: To obtain a flame-retardant composition excellent in bondability by mixing a flame-retardant organophosphorus compound with a chloroalkyl tribromoneopentylphosphate represented by a specified formula. SOLUTION: A frame-retardant organophosphorus compound is selected from among halogen-containing organophosphorus compounds [e.g. tris(chloroethyl) phosphate] and halogen-free organophosphorus compounds (e.g. triphenyl phosphate). A mixture comprising 1-99wt.% above selected flame- retardant organophosphorus compound and 99-1wt.% chloroalkyl tribromoneopentylphosphate represented by formula I (wherein R is H, an alkyl or the like; and (n) is 0.95-1.15) and about 0.1-5wt.% antioxidant (e.g. hydroquinone or organophosphorus (III) compound) represented by formula II (wherein R1 to R4 are each H or a 1-14C alkyl) are melted by heating to obtain a flame- retardant composition for polyurethane foams. A mixture comprising 100 pts.wt. polyol, 2-60 pts.wt. above flame-retardant composition, a polyisocyanate, a catalyst and a blowing agent is expanded to obtain a flame-retardant urethane foam.

Resin composition and molded article obtained therefrom

Abstract: PROBLEM TO BE SOLVED: To provide a resin composition which satisfies the requirements for sliding characteristics, color tone and appearance at the same time by blending a resin composition consisting of a polycarbonate resin and a polytetrafluoroethylene with a polycaprolactone and/or a phosphoric ester, and a glass filler SOLUTION: A resin composition consisting of 70-98wt% polycarbonate resin and 30-2wt% polytetrafluoroethylene is blended in an amount of 100 ptswt with 05-12 ptswt polycaprolactone and/or phosphoric ester, and 0-45 ptswt glass filler The polycarbonate resin used comprises an aromatic polycarbonate resin obtained by reacting a dihydric phenol with a carbonate precursor The polytetrafluoroethylene used comprises a fine powder with a particle diameter of 01-100μm, preferably having a melting point of at least 320 degC The polycaprolactone used preferably comprises one having a molecular weight of 3,000 to 30,000 The phosphoric ester used preferably comprises triphenyl phosphate The glass filler used preferably comprises a glass flake with a mean diameter of 10-1,000μm and a ratio of mean diameter to thickness of (5 to 500):1

Production of fiber formed product

Abstract: PROBLEM TO BE SOLVED: To improve the mechanical strength without deteriorating the practicality of a powdery phenol resin-based binder or further reduce the defective ratio when carrying out the forming processing. SOLUTION: A textile material is mixed with 5-40wt.% powdery phenol resin-based binder containing 1-20wt.% plasticizer selected from p- toluenesulfonamide, dicyclohexyl phthalate and triphenyl phosphate blended therein and the resultant textile material is then formed into a fleece with an opening mixer. Needling or heating, as necessary, is carried out to fuse the binder to the fiber and produce a bulky mat, which is then press formed into a prescribed shape. The binder is further blended with 0.1-5wt.% wax having <1P melt viscosity at 150 deg.C and <=5% compatibility with the phenol resin and/or 1-20wt.% thermoplastic resin having 1-1000P melt viscosity at 150 deg.C and <=20% compatibility with the phenol resin at 150 deg.C.

Flame retardant silicone composition

Abstract: PROBLEM TO BE SOLVED: To obtain a stable flame retardant silicone composition capable of providing a silicone excellent in flame retardance without using a platinum compound as a flame retardant by blending a polyorganosiloxane as a base polymer with a microencapsulated organic phosphoric ester. SOLUTION: This flame retardant silicone composition is obtained by blending a silicone composition containing a polyorganosiloxane as a base polymer with an organic phosphoric ester (e.g. a triaryl phosphate such as triphenyl phosphate) which is a core substance so as to provide preferably 0.5-10 pts.wt. phosphoric ester based on 100 pts.wt. polyorganosiloxane. A polyurethane, etc., are preferred as a coating material for a microcapsule. When magnesium hydroxide having <=1.5μm average particle diameter is further blended, the flame retardance is preferably further improved. A cross-linking means according to a cross- linking mechanisnl is blended in the objective composition; however, an organic peroxide, e.g. dicumyl peroxide is cited as the cross-linking means.

Photosensitive composition and element made by using it

Abstract: PROBLEM TO BE SOLVED: To obtain a photosensitive composition having high transparency, quick response speed, high density of coloration even at room temperature or above, and high resistance to repeated developing and extinguishing a color by using a photochromic compound and a specified compound as the constituents. SOLUTION: This composition contains a photochromic compound (e.g. a compound of formula I) and an acetal or ketal compound (e.g. 3-methoxybutyl aldehyde diethyl acetal) preferably as an oil phase (e.g. an oil phase obtained by dissolving them in organic solvents comprising isopropylated triphenyl phosphate and ethyl acetate). It is desirable to form the composition from a combination of at least two photochromic compounds different in absorption maximum when forming a color by at least 50nm (e.g. a combination of compounds of formula I and formula II).