- PHOSPHORUS-BASED RELEASING AGENT, OPTICAL POLYMERIZABLE COMPOSITION COMPRISING SAME AND PREPARATION THEREOF
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Embodiments relate to a polymerizable composition comprising a phosphorus-based mold releasing agent for an optical use whose preparation process is improved, and a process for preparing the phosphorus-based mold releasing agent. The phosphorus-based mold releasing agents can be prepared more easily and conveniently by using phosphorous pentoxide, which can easily react with a monoalcohol and/or water at room temperature in the absence of a catalyst or a solvent. In addition, byproducts are not generated during the reaction. Thus, when a lens is produced by using the mold release agent obtained therefrom, it is possible to prevent a defective appearance of the lens that may be caused by byproducts, thereby further enhancing the appearance properties thereof. Further, since separate steps for removing byproducts, specifically, such steps as washing and filtration, are not required, wastewater is not generated. Thus, it is not only environmentally friendly, but the production cost can also be reduced as the process is simple.
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Paragraph 0066; 0068
(2019/09/06)
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- Convenient preparation of long-chain dialkyl phosphates: Synthesis of dialkyl phosphates
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Reaction of phosphorus oxychloride with a primary alcohol (1.8 equiv) and triethylamine (1.8 equiv) in toluene, followed by filtration and treatment with steam, gives dialkyl phosphates in good yield and essentially free from trialkyl phosphate contamination. Georg Thieme Verlag Stuttgart · New York.
- Aitken, R. Alan,Collett, Chris J.,Mesher, Shaun T. E.
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scheme or table
p. 2515 - 2518
(2012/09/05)
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- GELLED HYDROCARBONS FOR OILFIELD PROCESSES, PHOSPHATE ESTER COMPOUNDS USEFUL IN GELLATION OF HYDROCARBONS AND METHODS FOR PRODUCTION AND USE THEREOF
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Phosphate esters useful for gelling hydrocarbons in combination with a metal source are disclosed along with methods of preparation of the phosphate esters. Fouling in oil refinery towers has been attributed due to distillation of impurities present in phosphate esters used to gel hydrocarbons for oil well fracturing. The improved method of preparation of the phosphate ester results in a product that substantially reduces or eliminates volatile phosphorus, which is phosphorus impurities that distill up to 250° C., and increases the high temperature viscosity of the hydrocarbon gels formed using the phosphate esters.
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Page/Page column 7
(2011/04/14)
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- Tailoring the specificity and reactivity of a mechanism-based inactivator of glucocerebrosidase for potential therapeutic applications
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Chaperoning an enzyme: Fluorosugar glycosidase inactivators with tunable phosphorus-based leaving groups react quickly with the catalytic nucleophile in β glucocerebrosidase (blue circle; Bn=benzyl). In Western blot analysis, Gaucher patient cells treated with these inactivators show increased intracellular levels of mutant enzyme, presumably because of increased transit from the endoplasmic reticulum (pale blue) to the lysosome (pale pink). Copyright
- Rempel, Brian P.,Tropak, Michael B.,Mahuran, Don J.,Withers, Stephen G.
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supporting information; experimental part
p. 10381 - 10383
(2011/12/04)
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- GELLED HYDROCARBONS FOR OILFIELD PROCESSES, PHOSPHATE ESTER COMPOUNDS USEFUL IN GELLATION OF HYDROCARBONS AND METHODS FOR PRODUCTION AND USE THEREOF
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Phosphate esters useful for gelling hydrocarbons in combination with a metal source are disclosed along with methods of preparation of the phosphate esters. Fouling in oil refinery towers has been attributed due to distillation of impurities present in phosphate esters used to gel hydrocarbons for oil well fracturing. The improved method of preparation of the phosphate ester results in a product that substantially reduces or eliminates volatile phosphorus, which is phosphorus impurities that distill up to 250° C., and increases the high temperature viscosity of the hydrocarbon gels formed using the phosphate esters.
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- Nickel stabilizers for synthetic polymers
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Compounds of the formula (I) SPC1 wherein either R1 represents a hydroxy group and R2 represents hydrogen or R1 represents hydrogen and R2 represents a hydroxy group, each of R3 and R4 independently represents hydrogen or alkyl, R5 represents alkyl, cycloalkyl, aralkyl, aryl, aralkyl or aryl groups which are monosubstituted, disubstituted or trisubstituted by hydroxy, alkyl, chlorine and/or alkoxy groups, or represents alkoxy, cycloalkoxy, aralkoxy, aryloxy or aralkoxy or aryloxy which is monosubstituted or disubstituted in the aryl moiety by alkyl, chlorine and/or alkoxy, R6 represents hydrogen, alkyl, cycloalkyl, aralkyl, aryl, aralkyl or aryl groups which are monosubstituted, disubstituted or trisubstituted by hydroxy, alkyl, chlorine and/or alkoxy groups, or represents alkoxy, cycloalkoxy, aralkoxy, aryloxy or aralkoxy or aryloxy which is monosubstituted or disubstituted in the aryl moiety by alkyl, chlorine and/or alkoxy groups, L is the monovalent anion of a carboxylic acid, M+ is an alkali metal ion, n and m are 1 to 2, p is 0, or 1 to 2, and q is 0 to 2 are suitable for stabilizing polymer substrates.
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