Showing papers on "Triphenyl phosphate published in 2018"
TL;DR: The prepared covalent organic frameworks with different pore sizes were successfully prepared by a room-temperature solution-suspension method and used to remove a typical aryl-organophosphorus flame retardant from aqueous solution, showing a promising application potential for selective removal of micropollutants from water by precisely controlling the COF structure.
Abstract: A critical challenge in environmental remediation is the design of adsorbents with proper pore size for the removal of organic pollutants. Three covalent organic frameworks (COFs) with different pore sizes were successfully prepared by a room-temperature solution–suspension method and used to remove a typical aryl-organophosphorus flame retardant [triphenyl phosphate (TPhP)] from aqueous solution. The prepared COFs showed strong acid resistance and thermal stability. The 1,3,5-triformylphloroglucinol (TFP) reacted with benzidine (BD) (COF2) and exhibited the highest sorption capacity for TPhP, followed by the reaction of TFP and 4,4″-diamino-p-terphenyl (DT) (COF3), and the reaction of TFP and p-phenylenediamine (COF1). Their adsorption equilibriums were achieved within 12 h, and COFs with a larger pore size have higher initial sorption rate but longer time to reach sorption equilibrium. According to the Langmuir fitting, the maximum sorption capacities of three COFs for TPhP were 86.1, 387.2, and 371.2 m...
116 citations
TL;DR: Chronic exposure to TPHP caused developmental and reproductive toxicities to D. magna, and significantly altered pathways related to genetic information processing, cellular process and metabolism might be responsible for the observed effects.
54 citations
TL;DR: In vitro study shows that TPHP is metabolized into its diester metabolite DPHP and mono- and dihydroxylated metabolites by cytochromes P450 (CYP) in human liver microsomes, while CYP1A2 and CYP2E1 isoforms are mainly involved in such processes.
Abstract: Understanding metabolic mechanisms is critical and remains a difficult task in the risk assessment of emerging pollutants. Triphenyl phosphate (TPHP), a widely used aryl phosphorus flame retardant (aryl-PFR), has been frequently detected in the environment, and its major metabolite was considered as diphenyl phosphate (DPHP). However, knowledge of the mechanism for TPHP leading to DPHP and other metabolites is lacking. Our in vitro study shows that TPHP is metabolized into its diester metabolite DPHP and mono- and dihydroxylated metabolites by cytochromes P450 (CYP) in human liver microsomes, while CYP1A2 and CYP2E1 isoforms are mainly involved in such processes. Molecular docking gives the conformation for TPHP binding with the active species Compound I (an iron IV-oxo heme cation radical) in specific CYP isoforms, showing that the aromatic ring of TPHP is likely to undergo metabolism. Quantum chemical calculations have shown that the dominant reaction channel is the O-addition of Compound I onto the aro...
46 citations
TL;DR: In vitro results suggest a novel mechanism of OP ester toxicity via T4 binding enhancement, and possible dysregulation of T4-hTTR interactions.
39 citations
TL;DR: While triphenyl phosphate (TPhP) has been frequently detected in surface water and wildlife, its adverse effects on the gonadal development and reproductive behaviors of fish remain unclear as mentioned in this paper.
Abstract: While triphenyl phosphate (TPhP) has been frequently detected in surface water and wildlife, its adverse effects on the gonadal development and reproductive behaviors of fish remain unclear. In thi...
32 citations
TL;DR: The proposed protocol provides for the microwave-assisted extraction of the analytes from the PM followed by solid-phase microextraction gas chromatography-tandem mass spectrometry determination (SPME-GC-MS/MS) to make the proposed protocol a green and high-throughput alternative for OPE quantification in particulate matter.
31 citations
TL;DR: The preliminary ecotoxicity of DOPO-HQ was investigated and evaluated, using aquatic, terrestrial and microorganism toxicity according to Organization for Economic Co-operation and Development guidelines under the framework of the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH) regulation.
29 citations
TL;DR: In this article, a self-sealing method was proposed to prevent triphenyl phosphate from flowing out of the tubules during curing, which resulted in an encapsulation ratio of 56%.
Abstract: Phosphorus flame retardants can provide polymers with flame retardancy, but they often compromise the polymers’ mechanical performance due to plasticization. This problem is addressed in this study by filling and sealing triphenyl phosphate into natural microtubules of ∼100 µm in length, 10–20 µm in diameter and 0.5–1.0 µm in wall thickness. We investigated the sealing mechanisms through morphological observation and X-ray photoelectron spectroscopy. An appropriate mixture of triphenyl phosphate and cellulose acetate at mass ratio of 97:3 created an encapsulation effect which prevented triphenyl phosphate from flowing out of the tubules during curing, which resulted in an encapsulation ratio of 56%. Adding the filled tubules into an epoxy resin showed no obvious compromise on the stiffness and strength of the matrix. The tubules proved effective in increasing char and reducing smoke release during combustion. This self-sealing method may be used in other applications such as self-healing composites.
20 citations
TL;DR: In this article, a series of organo-phosphorus flame retardants (FRs) were studied in order to investigate their flame retarding performances for poly(vinyl chloride)/wood flour (PVC-WF) composite.
Abstract: A series of organo-phosphorus flame retardants (FRs) were studied in order to investigate their flame retarding performances for poly(vinyl chloride)/wood flour (PVC-WF) composite. The FRs used include diammonium hydrogen phosphate (DAP), aluminum hydrogen phosphonate (AHP), and triphenyl phosphate (TPP). The effects of incorporating different FRs into PVC-WF were determined by UL-94, TGA, FTIR, and field emission scanning electron microscope (FE-SEM). The results revealed significantly improved flame retardancy and thermal stability of PVC-WF in the presence of FR. V-0 ratings can be obtained at loading of FR as low as 1 wt% for DAP and 1.5 wt% for TPP but the same rating is recorded for the mixture containing 20 wt% AHP. AHP mainly acted in condensed phase whereas TPP and DAP generated phosphorus volatiles and/or fuel dilution compounds. TGA analysis was utilized to calculate the kinetic parameters of PVC-WF and PCV-WF/FR as well as to study the interaction between FR and PVC-WF. FE-SEM and FTIR were used to examine the morphologies and chemical components of the residual char. The results showed that PVC-WF/FR produced phosphorus-containing moieties during decomposition, which could act as dehydration agents to form char layer to protect the mixture from further degradation. The flexural and impact properties of composite increased with addition of FR at low loading and decreased with high loading of FR. By the incorporation of TPP in PVC-WF, the glass transition is decreased; however, the storage modulus in the low-temperature glass state is increased. This effect is attributed to antiplasticizing ability of TPP for PVC-WF system. POLYM. COMPOS., 2016. © 2016 Society of Plastics Engineers
17 citations
TL;DR: In this article, the thermal degradation of resorcinol bis(diphenyl phosphate) (RDP) and bisphenol A bis-diphosphate (BDP) has been studied by 31P NMR, Q-TOF, and GPC at normal and extreme heating conditions.
12 citations
TL;DR: In this article, Tris(3-nitrophenyl) phosphine (NPPh3), a flame retardant containing phosphorus and nitro group, was synthesized and applied to acrylonitrile-butadiene-styrene (ABS).
Abstract: Tris(3-nitrophenyl) phosphine (NPPh3), a flame retardant containing phosphorus and nitro group, is synthesized. And a novel flame retardant loading with NPPh3 and triphenyl phosphate (TPP) is prepared to flame-retardant acrylonitrile–butadiene–styrene (ABS). The effects of NPPh3 and TPP on the flammability of ABS are studied by various methods. The flame retardation of ABS/NPPh3/TPP composite is characterized by limiting oxygen index method and vertical and horizontal burning tests (UL-94). Compared with the systems with ABS/NPPh3 and ABS/TPP alone, ABS/NPPh3/TPP obtains a higher limiting oxygen index. Additionally, the flame-retardant effect of ABS/NPPh3/TPP in condensed phase is studied by thermogravimetric analysis (TG), scanning electron microscopy, and Fourier transform infrared spectroscopy (FTIR). The gases evolved during thermal degradation process in nitrogen are studied by means of thermogravimetry coupled with Fourier transform infrared spectroscopy (TG-FTIR). The results show that ABS/NPPh3/TPP exerts gas-condensed phase flame-retardant effect.
01 Jul 2018
TL;DR: In this article, Melamine cyanurate (MCA) and triphenyl phosphate (TPP) were added in unsaturated polyester resin (UPR) and the combustion behaviour were investigated Flame retardant and thermal stability were investigated through limiting oxygen index test (LOI), vertical burning test (UL-94) and thermogravimetric analysis (TGA).
Abstract: Melamine cyanurate (MCA) and triphenyl phosphate (TPP) were added in unsaturated polyester resin (UPR) and the combustion behaviour were investigated Flame retardant and thermal stability were investigated through limiting oxygen index test (LOI), vertical burning test (UL-94) and thermogravimetric analysis (TGA) The scanning electron microscopy (SEM) and TGA analyses showed that the char yield was increased by the introduction of MCA and TPP system Therefore, a profound flame retardant effect was obtained as MCA and TPP were added to UPR
TL;DR: In this article, a series of pure, composite and hybrid sols like SiO2, SiO 2-KH560, siO2-kH560-MA (Melamine), siO 2 -KH 560-BB (Boric acid and Borax) and SiO-2-Kh560-TPP (Triphenyl Phosphate) including both nano-sols and traditional flame retardant components were prepared and used to finish cotton, polyester and polyester-cotton fabrics, particle size distributions and pH values of as
22 Dec 2018
Patent•
14 Sep 2018
TL;DR: In this paper, a preparation method of an organic titanium precursor polymer TPP-I (Triphenyl Phosphate) and the application thereof in electrostatic conductive coatings is presented.
Abstract: The invention provides a preparation method of an organic titanium precursor polymer TPP-I (Triphenyl Phosphate) and the application thereof in electrostatic conductive coatings and belongs to the technical field of preparation and application of new materials. The preparation method of the organic titanium precursor polymer TPP-I includes the steps of placing a mixture of titanium hydride powder,epoxy resin, nanodispersant, titanate coupling agents, silane coupling agents and solvent in a ball mill reaction tank for ball milling reaction under ultrasonic conditions, allowing titanium powderto initiate the chemical bond of the polymer and the lattice bond cleavage on the surface of titanium nanoparticles during a nanocrystallization process, producing ions or groups of extremely high surface activity, degrading polymers into small molecular oligomers that can conduct graft polymerization at high temperatures and pressures, realizing molecular structure reforming and obtaining the organic titanium precursor polymer TPP-I. The organic titanium precursor polymer TPP-I can be used for preparing primers and topcoat for the electrostatic conductive coatings.
20 Nov 2018-Journal of Environmental Science and Health Part C-environmental Carcinogenesis & Ecotoxicology Reviews
TL;DR: In silico simulations, a proton shuttle pathway for aryl hydroxylation of TPHP and P = O bond-assisted H-transfer mechanisms (rather than nonenzymatic hydrolysis) that lead to O-dealkylation/dearylations of phosphotriesters are discovered.
Abstract: The metabolic fate and toxicokinetics of organic phosphorus flame retardants catalyzed by cytochrome P450 enzymes (CYPs) are here investigated by in silico simulations, leveraging an active center model to mimic the CYPs, triphenyl phosphate (TPHP), tris(2-butoxyethyl) phosphate and tris(1,3-dichloro-2-propyl) phosphate as substrates. Our calculations elucidated key main pathways and predicted products, which were corroborated by current in vitro data. Results showed that alkyl OPFRs are eliminated faster than aryl and halogenated alkyl-substituted OPFRs. In addition, we discovered a proton shuttle pathway for aryl hydroxylation of TPHP and P = O bond-assisted H-transfer mechanisms (rather than nonenzymatic hydrolysis) that lead to O-dealkylation/dearylation of phosphotriesters.
Patent•
17 Aug 2018
TL;DR: In this article, a preparation method of biodegradable super-tough flame-retardant polylactic acid composite material is described. But the method is not suitable for the use in the manufacturing process.
Abstract: The invention discloses a preparation method of biodegradable super-tough flame-retardant polylactic acid composite material. The preparation method of the polylactic acid composite material includesthe steps: adding dried polylactic acid and polybutylene succinate into an internal mixer; premixing mixture for 5-10 minutes at the rotating speed of 20-100rpm at the temperature of 150-200 DEG C; adding triphenyl phosphate and tetrabutyl titanate, and continuing to melt and mix mixture for 5-30 minutes; performing compression molding to obtain the polylactic acid composite material. Total feeding weight percent of the polylactic acid and the polybutylene succinate is 100%, the polylactic acid accounts for 55.0-95.0% of the total feeding weight, the polybutylene succinate accounts for 5.0-45.0% of the total feeding weight, and the triphenyl phosphate and the tetrabutyl titanate account for 0.1-30.0% and 0.1-10.0% of the total feeding weight of the polylactic acid and the polybutylene succinate. According to the method, toughness of the material is remarkably improved, a flame-retardant element phosphorus is connected on a polymer molecular chain in a chemical bond manner, forming of acarbon layer is facilitated by titanium acid radical, and good flame resistance of the composite material is achieved.
Patent•
12 Jun 2018
TL;DR: In this paper, a flame-retardant non-toxic cable material for low-voltage cable is presented. But the cable material is not suitable for high voltage and does not contain halogen substances, and it does not generate poisonous gas during combustion.
Abstract: The invention belongs to the technical field of cable materials, in particular to a flame-retardant non-toxic cable material for a low-voltage cable. The cable material is prepared from the followingcomponents: EVA, natural rubber, ethylene-vinyl acetate copolymer, sebacic acid dioctyl ester, carbon black, an organic flame retardant, aluminum hydroxide, magnesium hydroxide, a coupling agent and an anti-ageing agent, wherein the organic flame retardant is a mixture of triphenyl phosphate and tripolycyanamide; the coupling agent is a silane coupling agent, isopropyl titanate triiso-stearate ortetraisopropyl titanate; and the cable material is finally extruded by a twin-screw extruder through banburying and open-smelting. The cable material has characteristics of being excellent in flame resistance and good in mechanical property, does not contain halogen substances, and does not generate acidic poisonous gas during combustion.
Patent•
19 Jan 2018
TL;DR: In this paper, the authors presented an antibacterial automotive interior coating which comprises nano-silver antibacterial powder, microcrystalline wax, silicone oil, lac, fatty alcohol-polyoxyethylene ether, vinyl cyanide, sodium lauryl sulfate, sodium benzoate, triphenyl phosphate, ethanol, talcum powder and water.
Abstract: The invention provides an antibacterial automotive interior coating which comprises nano-silver antibacterial powder, microcrystalline wax, silicone oil, lac, fatty alcohol-polyoxyethylene ether, vinyl cyanide, sodium lauryl sulfate, sodium benzoate, triphenyl phosphate, ethanol, talcum powder and water. The antibacterial automotive interior coating is characterized by comprising 1-6 parts of nano-silver antibacterial powder, 10-15 parts of microcrystalline wax, 4-8 parts of silicone oil, 4-10 parts of lac, 8-10 parts of fatty alcohol-polyoxyethylene ether, 1-3 parts of vinyl cyanide, 4-8 parts of sodium lauryl sulfate, 0.5-0.15 part of sodium benzoate, 30-45 parts of ethanol, 3-5 parts of triphenyl phosphate, 15-20 parts of water and 1-3 parts of talcum powder.
Patent•
22 Mar 2018
TL;DR: In this paper, an amine curing agent, a mineral filler, triphenyl phosphate as a flame retardant, trichloroethyl phosphate as an additive plasticizer with the following ratio of components (wt %): epoxy resin 70.42÷58.81, triethylenetetetramine 10.56÷8.82, triphensyl phosphate 7.04÷5.88, sodium fluorosilicate 1.4÷17.6.
Abstract: FIELD: chemistry.SUBSTANCE: composition includes epoxy diane resin, an amine curing agent, a mineral filler, a plasticizer and a flame retardant. It contains triethylenetetramine as an amine curing agent, sodium fluorosilicate - a technological waste product of phosphoric acid production - as a mineral filler, triphenyl phosphate as a flame retardant, trichloroethyl phosphate as a plasticizer with the following ratio of components (wt %): epoxy resin 70.42÷58.81, triethylenetetramine 10.56÷8.82, trichloroethyl phosphate 10.56÷8.82, triphenyl phosphate 7.04÷5.88, sodium silicofluoride 1.4÷17.6.EFFECT: provided fire safety of protective coatings having increased deformation resistance.1 dwg, 1 tbl, 3 ex
Patent•
12 Jan 2018
TL;DR: In this paper, a weather-resistant polycarbonate/polyethylene terephthalate (PC/PET) alloy is presented, which comprises a PC resin, a PET resin, compatilizer, a toughening agent, a phosphate type flame retardant, an antioxidant, other aids and phosphate anions which are 3-100ppm on the basis of the total weight of the PC/PET alloy.
Abstract: The invention discloses a weather-resistant PC/PET (Polycarbonate/Polyethylene Terephthalate) alloy which comprises a PC resin, a PET resin, a compatilizer, a toughening agent, a phosphate type flameretardant, an antioxidant, other aids and phosphate anions which are 3-100ppm on the basis of the total weight of the PC/PET alloy. As the phosphate type flame retardant with a trace amount of TPP (Triphenyl Phosphate) is adopted as the flame retardant, the phosphate anions which are 3-100ppm are added in the alloy, and the phosphate anions can be matched with the trace amount of the TPP left in the phosphate type flame retardant, the reaction of the PC resin and the PET resin can be inhibited to a very large extent, the ester exchange reaction in the presence of lighting and moisture can be particularly reduced, the mechanical properties and the long-term color stability of the allot are greatly optimized, and the alloy is particularly applicable to situations with relatively high use environment requirements.
Patent•
26 Jan 2018
TL;DR: In this article, a preparation method of a low-triphenyl phosphate engineering plastic halogen-free flame retardant is described. But the method comprises the steps: under the action of a Lewis catalyst, carrying out a reaction of phenol with phosphorus oxychloride, reducing the pressure and distilling out excess phosphorusoxychloride to obtain a mixture intermediate; carrying out condensation reaction of the mixture intermediate and p-dihydroxybenzene, carrying a reaction with a proper amount of p-Dihydroxbenzenes firstly, after a
Abstract: The invention belongs to the technical field of applied engineering plastics, and in particular, relates to a preparation method of a low-triphenyl phosphate engineering plastic halogen-free flame retardant. The method comprises the steps: under the action of a Lewis catalyst, carrying out a reaction of phenol with phosphorus oxychloride, reducing the pressure and distilling out excess phosphorusoxychloride, to obtain a mixture intermediate; carrying out a condensation reaction of the mixture intermediate and p-dihydroxybenzene, carrying out a reaction of the mixed intermediate with a properamount of p-dihydroxybenzene firstly, after a part of p-dihydroxybenzene is completely reacted, carrying out high vacuum dehydrochlorination, then adding triethylamine and the remaining p-dihydroxybenzene at relatively low temperature, and carrying out a reaction, wherein increase of the content of triphenyl phosphate is greatly reduced, toxicity to human bodies is reduced, and at the same time, the purity and the yield of the product are improved; and the preparation method has the advantages of simple process operation, short production cycle, economy and environmental protection, can satisfy the requirements of industrial scale production, and is suitable for industrialized popularization and application.
Patent•
07 Sep 2018
TL;DR: In this article, a PC material applicable to a notebook computer is presented, which consists of 40-70 parts of bisphenolA-type polycarbonate, 10-15 parts of triphenyl phosphate, 4-8 parts of oligomerized aryl phosphate, 6-11 parts of tetraphenyl resorcinol diphosphate, 3-7 parts of ultrafine talc powder, 5-10 parts ofethylene-butyl acrylate-glycidyl methacrylate, 1-4 parts of tri
Abstract: The invention discloses a PC material applicable to a notebook computer. The PC material has the characteristic of comprising the following components of: in parts by weight, 40-70 parts of bisphenolA-type polycarbonate, 10-15 parts of triphenyl phosphate, 4-8 parts of oligomerized aryl phosphate, 6-11 parts of tetraphenyl resorcinol diphosphate, 3-7 parts of ultrafine talc powder, 5-10 parts ofethylene-butyl acrylate-glycidyl methacrylate, 1-4 parts of tetrafluoroethylene, 0.2-1 part of pentaerythritol dodecyl thiopropionate and 0.5-0.8 part of vinylamine distearate. The PC material has excellent insulativity and stability, good heat resistance, water resistance and strong impact resistance, requirements of the notebook computer for the computer body are met well, and requirements of amanufacturer can be met.
Patent•
14 Nov 2018
TL;DR: In this article, a process for preparing a flame retardant triaryl phosphate oil base is carried out by mixing triphenyl phosphate with para-t-butylphenol in a molar ratio of 1:045-055 and a catalyst with potassium carbonate.
Abstract: FIELD: technological processesSUBSTANCE: invention relates to organic synthesis and relates to a process for preparing a flame retardant triaryl phosphate oil base Process is carried out by mixing triphenyl phosphate with para-t-butylphenol in a molar ratio of 1:(045–055) and a catalyst with potassium carbonate Resulting mixture is heated, gradually increasing the temperature to 200 °C, under vacuum at a residual pressure of 10–15 mm Hg, driving off the phenol After distilling off the phenol, the reaction mixture is cooled to a temperature of 40–45 °C and the catalyst is neutralized with hydrochloric or sulfuric acid Precipitate is filtered off, the filtrate is subjected to vacuum fractional distillation at a residual pressure of 10–15 mm Hg, while during distillation of excess triphenyl phosphate, the temperature is maintained in the boiling range of triphenyl phosphate Moreover, 05–10 wt % potassium carbonate based on triphenyl phosphateEFFECT: proposed process conditions provide the desired product corresponding to the commercial mixtures of phenyl/para-tert-butylphenylphosphates meeting the requirements for use as a base for a flame-retardant turbine oil and in hydraulic control systems, simplifying the process of obtaining it and increasing the yield3 cl, 2 tbl, 8 ex
Patent•
18 Dec 2018
TL;DR: In this article, a heat resistant, low smoke and flame-retardant non-cross-linked cable material comprising the raw materials: an ethylene-vinyl acetate copolymer, styrene, 3-(2-furyl)acrylic acid, ethyl cinnamate, talcum powder, linear low density polyethylene, maleic anhydride, octene, N,N-dimethylformamide, dimethyl sulfoxide, triphenyl phosphate, Dimethyl acetal, cinnamyl chloride, diethylamine,
Abstract: The invention discloses a heat-resistant, low-smoke and flame-retardant non-cross-linked cable material comprising the raw materials: an ethylene-vinyl acetate copolymer, styrene, 3-(2-furyl)acrylic acid, ethyl cinnamate, talcum powder, linear low density polyethylene, maleic anhydride, octene, N,N-dimethylformamide, dimethyl sulfoxide, triphenyl phosphate, dimethyl acetal, cinnamyl chloride, diethylamine, triethylamine, 2,3-dimethyl-2,3-diphenylbutane, dibenzoyl peroxide, a magnesium-aluminum composite flame retardant and V-Si4042 silicone. Due to reasonable raw materials and proportions, thecable material has excellent thermal deformation resistance and thermal aging resistance, and can meet the performance requirements of wire and cable insulation and sheath materials at the service temperature of 90 DEG C-105 DEG C; through the way of forming and capturing free radicals in the reaction system and stabilizing the free radicals, the cross-linking in the reaction system can be inhibited, the softness, flame retardancy, production efficiency, extrusion processability, fluidity, tensile strength and tensile elongation of the material are improved while the heat resistance of the material is enhanced, the compatibility between blends is good, the process consumption can be reduced and the manufacturing cost is reduced.
Patent•
12 Jan 2018
TL;DR: In this article, a high-temperature resistant polycarbonate composition which comprises a PC (Polycarbonate), PET (Polyethylene Terephthalate) resin, a compatilizer, a toughening agent, aphosphate type flame retardant, an antioxidant, other aids and a calcium element which is 1.0-60.0ppm was revealed.
Abstract: The invention discloses a high-temperature resistant polycarbonate composition which comprises a PC (Polycarbonate) resin, PET (Polyethylene Terephthalate) resin, a compatilizer, a toughening agent, aphosphate type flame retardant, an antioxidant, other aids and a calcium element which is 1.0-60.0ppm on the basis of the total weight of the polycarbonate composition. As DBP (Dibutyl Phthalate) with a trace amount of TPP (Triphenyl Phosphate) is adopted as the flame retardant in the high-temperature resistant polycarbonate composition, the calcium element of 1.0-60.0ppm is added in the composition, and the calcium element can be matched with the trace amount of the TPP left in the DBP flame retardant, the reaction of the PC resin and the PET resin can be inhibited to a very large extent, moreover, the influence of the flame retardant to the toughness of the polycarbonate composition is reduced to the maximum extent, the color stability of the composition is also improved, the mechanicalproperties and the long-term color stability of the polycarbonate composition are greatly optimized, and the polycarbonate composition is particularly applicable to situations with relatively high molding temperature and use environment requirements.
Patent•
06 Mar 2018
TL;DR: In this article, a preparation method of cold-resistant water pipe heat-insulating coating is described, which is used for protecting water path pipelines in all positions and inflection points, and damage, such as crack and breach caused by low-temperature and high temperature difference cataclysm of the external environment.
Abstract: The invention discloses a preparation method of cold-resistant water pipe heat-insulating coating, and relates to the technical field of heat-insulating coating. The cold-resistant water pipe heat-insulating coating comprises the following components: acetic acid isopropyl ester, anthracene sesame oil, triglycol dioxanthate, polyvinyl chloride paste resin, epoxy rice bran oleic acid butyl ester, mineral oil, polytetrafluoroethylene, an organic bismuth antioxidant, a copper oxide powder, silane, an antioxidant additive, propylene asphalt resin, hard polyurethane foam, 3,4-dimethyl pyrazolate, sodium aluminate, polyglycerol fatty acid ester, p-methylbenzene sulfonic acid, terpene resin, triphenyl phosphate, microcrystalline cellulose, an extension agent and an alkaline solution. The preparedcold-resistant water pipe heat-insulating coating has a good heat-insulating effect under the cold environment, the coating components are safe and non-toxic, pipelines are not corroded, pressure resistance and impact resistance are achieved, and the materials are stable; furthermore, the cold-resistant water pipe heat-insulating coating can be used for protecting water path pipelines in all positions and inflection points, and damage, such as crack and breach caused by low-temperature and high-temperature repeated temperature difference cataclysm of the external environment, can be avoided.
Patent•
17 Oct 2018
TL;DR: In this paper, a new efficient method for the preparation of triphenyl phosphate is proposed, which makes it possible to obtain triphensyl phosphate from low-toxic components in high yield.
Abstract: FIELD: chemistry.SUBSTANCE: invention relates to a process for the preparation of triphenyl phosphate and can be used in the chemical industry. Proposed method is characterized in that phosphorus trichloride is reacted with phenol at a molar ratio of 1:3.15–1:3.5, with phosphorus trichloride being added to the phenol for 1.5–4 hours at a temperature of 40–45 °C in an inert atmosphere, after separation of hydrogen chloride, the reaction mixture is heated to a temperature of 150–180 °C, maintained at this temperature for 45–90 min under vacuum at a residual pressure of 300–350 mm Hg and the excess phenol is distilled off at a residual pressure of 5–10 mm Hg, the produced triphenyl phosphite is cooled, diluted with an organic solvent and the oxidant is gradually added, the reaction mixture is boiled for 30–40 minutes, then cooled to room temperature, the oxidant is neutralized, the organic phase is separated, the solvent is evaporated, the triphenyl phosphate is isolated by vacuum distillation.EFFECT: new efficient method for the preparation of triphenyl phosphate is proposed, which makes it possible to obtain triphenyl phosphate from low-toxic components in high yield.4 cl, 7 ex
Patent•
15 Jun 2018
TL;DR: The ABS black flame-retardant modified material possesses excellent flame resistance and mechanical comprehensive performance as discussed by the authors, which is a high molecular material, and more specifically relates to an ABS black-flame-resistant modified material.
Abstract: The invention belongs to the field of high molecular material, and more specifically relates to an ABS black flame-retardant modified material. The common ABS plastic is poor in flame resistance. TheABS black flame-retardant modified material contains, by weight, 1 to 2% of insulation carbon black, 2 to 5% of a dispersant, 85 to 95% of an ABS raw material, and 2 to 8% of a fire retardant; the fire retardant is a mixture of Tri(tribromophenyl) cyanurate, antimony oxide, triphenyl phosphate, and magnesium hydroxide. The ABS black flame-retardant modified material possesses excellent flame resistance and mechanical comprehensive performance.
Patent•
01 Jun 2018
TL;DR: In this paper, a novel flame retardant is prepared from the following components in parts by mass: 5 to 15 parts of antimonous trioxide, 0.5 to 3 parts of ammonium sulfate, 15 to 20 parts of magnesium hydroxide, 1 to 3 part of triphenyl phosphate, 5 to 10 parts of zinc borate and 1 to 5 parts of bauxite.
Abstract: The invention relates to a novel flame retardant. The novel flame retardant is prepared from the following components in parts by mass: 5 to 15 parts of antimonous trioxide, 0.5 to 3 parts of ammoniumsulfate, 15 to 20 parts of magnesium hydroxide, 1 to 3 parts of triphenyl phosphate, 5 to 10 parts of zinc borate and 1 to 5 parts of bauxite. With the technical solution, the flame retardant adoptsa reasonable ratio, is low in cost, and has a good flame retardant effect.