Synthesis and Structure of Fused Ring Compound Containing Phosphorus 8, 9, 16, 17-Tetradehydro-6, 14-dithiono-6, 14-dithiol-7, 8, 15, 16-tetraza-5, 13-dioxa-6, 14-diphosphadibenzo[a, h]tetradecahydro-anthracene Pyridinium and Its Derivatives
A phosphorus-containing intermediate,10-(2',5'-bis(hydroxy)phenyl)-9,10-di-hydro-9-oxa-10-phosphaphenanthrene-10-oxide(DOPO-BQ)was synthesized through phosphorus trichloride,o-phenyl phenol and1,4-benzoquinone.
A multifunctional phosphorus-containing epoxy resin (FD) was prepared from the addition reaction of 9,10-dihydro-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and the glycidyl ether of cresol formaldehyde novolac (F51). The epoxy value and the phosphorus weight content of FD could be 0.25mol/100g and 4.1% respectively.
Two series of phosphorus-containing PAEKs with biphenyl-S moiety were synthesized by high-temperature solution polycondensation, which 1, 4-bis (4-fluoro-benzoyl) benzene (1, 4-FBB) or 4, 4'-diflourodiphenylketone (DFK), DOPO-HQ, biphenol-S were used as monomer.
The experimental results show that the friction coefficient of the brake shoes containing phosphorous 1.0～1.3% is in agreement with that of grey iron brake shoes containing phosphorous 2.0～2.5%, more than that of medium phosphorous (0.7～1.0%) grey iron.
The flame retardant mechanisms of two phosphorated flame retardants P1~# and TCP in isocyanurate-modified polyurethane elastomer (IMPUE) were studied. By limiting oxygen index (LOI),TG-DTA,FTIR and X-ray spectrum.
Present research indicate that the policy of forbid saling and applicating the phosphorated detergent from 1st, Jau,2003 is essential and effective, which bring notable benefits: by the end of the 2003, non-phosphorated detergent products had become main stream flow in Chongqing market, which account above 90% sales volume.
The system of zinc dialkyldithiophosphate(ZDP) in lubricating base oil has been studiedby using ~(31)P-NMR. At low concentration of ZDP a phosphorated compound resonatingat chemical shift of 86ppm was found.
A Study of the Surface of Mo-Containing Phosphorus-Modified Catalysts Supported by γ-Al2O3 Using Probe Molecules (CO2 and O2)
New Method of Synthesis of Acetals Containing Phosphorus in the Alcohol Fragment
The calculation is carried out for molecules of heterocyclic analogues of fluorene containing phosphorus and nitrogen (namely, the groups P-H, P-C6H5, and N-H).
The concentration of excess arsenic amounted to 0.1 at % in the samples containing phosphorus; in this case, the clusters were observed only after a heat treatment at 600°C.
A novel water-soluble polymer containing phosphorus poly(sodium p-methacryloylaminobenzylphosphonate) was synthesized by free radical polymerization in the presence of K2S2O8 as initiator, in water as solvent at 70°C with a 48 h reaction time.
Radiation-Chemical Synthesis of Phosphorus-Containing Polymers in the Presence of Inorganic Additives
The photocatalytic oxidation of sulfur- and phosphorus-containing substances resulted in gradual deactivation of the photocatalyst; however, its activity can be restored by washing the photocatalyst with water.
The Effect of Silicon on Electron Structure and Corrosion-Electrochemical Behavior of a X20H20 Type Phosphorus-Containing Steel
It is shown that protective films on galvanized steel can be obtained from alkaline phosphate solutions in the presence of phosphorus-containing ligands.
Nitrogen-phosphorus-containing polyampholytes also possess a high sorption power with respect to the U ions in nitric acid solutions.
Plant height, fresh mass, and number of flowers per plant were greater in calla lilies irrigated with nutrient solution containing phosphorous than no phosphorous treatments.
Extraction of Am(III) from different acid media by di-2-ethyl hexyl phosphoric acid containing phosphorous pentoxide
The conversion of insoluble phosphorous minerals such as apatite, Ca5(PO4)3(F, OH, Cl), to phases containing phosphorous in soluble form is an essential step in the production of fertilizer grade phosphates.
Solution of Cr3C2 in a nickel matrix containing phosphorous
In the systems containing phosphorous, interaction was controlled by the sublimation of this component.
Determination of the urinary excretion of ifosfamide and its phosphorated metabolites by phosphorus-31 nuclear magnetic resonanc
This technique allows the individual assay of all phosphorated metabolites of IF in a single analysis without the need for prior extraction.
In all, 14% of the injected dose was excreted as unknown phosphorated compounds.
Pesticides of various classes (chlorinated, phosphorated, carbamates, carbonates) and other organic toxicants having different volatility were employed as substances to be concentrated.
1.120 patients with varying complaints related to the gastrointestinal tract were treated symptomatically with Coactyn, a new pH-adjusted phosphorated carbohydrate solution containing homatropine methylbromide and phenobarbital.