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JP2001510839A |
A process for isolating trioxane from an aqueous mixture which includes trioxane, water and formaldehyde, including removing trioxane from the mixture by pervaporation, and subjecting the mixture enriched in trioxane (permeate) to rectif...
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JP2001510439A |
PCT No. PCT/JP97/00353 Sec. 371 Date Aug. 20, 1998 Sec. 102(e) Date Aug. 20, 1998 PCT Filed Feb. 10, 1997 PCT Pub. No. WO97/30042 PCT Pub. Date Aug. 21, 1997It is provided a polyester cyclic compound represented by formula (1). It is als...
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JP2001199978A |
To produce trioxane by using simple facilities. This method for producing trioxane from an aqueous solution of formaldehyde comprises a step for bringing an aqueous solution having high concentration into a solid acid catalyst and a step...
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JP2001190947A |
To provide a method capable of improving the multi-phase reaction performance in the case of a critical phase combination based on the reverse flow principle. The method is a method for performing a multi-phase reaction in a continuous o...
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JP2001508021A |
PCT No. PCT/GB96/01342 Sec. 371 Date Mar. 20, 1998 Sec. 102(e) Date Mar. 20, 1998 PCT Filed Jun. 6, 1996 PCT Pub. No. WO96/39402 PCT Pub. Date Dec. 12, 1996Rotaxanes and pseudorotaxanes, methods of making them, intermediates in their for...
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JP2001507672A |
An antimalarial drug combination for prophylactic treatment or curative treatment of malaria comprises a first component which is a fenozan, that is a cis-fused cyclopenteno-1,2,4-trioxane, and a second component which is another antimal...
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JP3143955B2 |
PURPOSE: To produce trioxane at high rate of reaction in high efficiency with little side reaction without causing the corrosion of the apparatus by contacting formaldehyde with an ion exchange fiber having sulfonic acid group. CONSTITUT...
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JP3132822B2 |
There is provided a volatile, thermally stable complex of a barium, strontium or calcium beta -diketonate coordinated with one or more coordinating ligands, wherein the complex is of the formula where M is Ba, Ca or Sr; R' and R'' are in...
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JP2001026589A |
To obtain the subject new compound useful as a monomer for a polymer material in high selectivity by directly reacting a cyclic formal with ethylene oxide.A new ether formal of formula I ((n) is an integer of ≥3; (m) is an integer of ...
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JP2001011069A |
To obtain trioxane which is a starting material of a polyoxymethylene having high strength, ridigidty and toughness, and good dimensional stability by using a specific catalyst exhibiting excellent stability as good selectivity and activ...
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JP2000297085A |
To obtain a new compound useful as a discotic liquid crystal material, capable of providing an electrolyte together with a metal salt and controlling the liquid crystalline phase and liquid crystal transition temperature of its own by mi...
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JP3101326B2 |
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JP3096202B2 |
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JP2000275434A |
To provide an optical compensating sheet using lower fatty acid ester film of cellulose high in retardation value, by using a compound having a triphenylene ring as a retardation-raising agent for lower fatty acid ester film of cellulose...
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JP2000256349A |
To provide a new method for synthesizing a macrocyclic compound through reaction between 1,3-dioxolane and ethylene oxide. This method for synthesizing a cyclic ether formal with its ring size enlarged by oxyethylene unit compared to tha...
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JP3090290B2 |
A novel 14-crown 4-ether derivative is disclosed for use in a dry analytical element for assaying lithium.
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JP2000191656A |
To efficiently prevent the diffusion of an acid produced in exposure process by incorporating a photoresist composition with a crown ether or polyethylene glycol derivative as a multioxygen-contg. compoud. The diffusion of an acid produc...
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JP3046840B2 |
Novel hydroxy containing fluorovinyl ethers, polymers of hydroxy containing fluorovinyl ethers, novel cyclic ethers, copolymers of selected hydroxy containing fluorovinyl ethers, a process for reducing ester containing fluorovinyl compou...
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JP2000143658A |
To provide a method by which trioxane can be produced in high purity. This method is to separate a liquid mixture formed from formaldehyde and alcohols and containing the formaldehyde, trioxane, the alcohols, a hemiformal, usual accessor...
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JP2000121602A |
To provide a sensitive membrane of a sensor for measuring ion activity by using a sol-gel ion sensitive membrane containing the alkoxy silyl group, expressed by the specific formula, and coupled with an ionophore.This ion activity measur...
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JP2000119284A |
To obtain new derivatives of alkoxy silylated crown ether useful for sol-gel sensitive membrane ionophore in sodium ion activity measurement, giving a sensitive membrane excellent in durability, harmless and free from irritation to organ...
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JP3036713B2 |
PURPOSE: To provide a reaction solution having lower viscosity and ready handleability and to obtain a cyclic carbonate simply in high yield and in high selectivity in reacting a carbonic acid ester with a diol by using a specific amount...
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JP2000044558A |
To provide a method by which trioxane can be separated from a gaseous mixture with formaldehyde and the disadvantageous irreversible formation of solid paraformaldehyde is avoided. This method is to separate a gaseous mixture comprising ...
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JP3009978B2 |
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JP2000034286A |
To provide a method for producing trioxan from an aqueous solution of formaldehyde in a high yield. When producing trioxan from an aqueous solution of formaldehyde in the presence of gallium silicate as a catalyst, in the method of this ...
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JP3001626B2 |
A novel compound, a 2-chloropropionaldehyde trimer and a process of producing a 2-chloropropionaldehyde trimer by adding concentrated sulfuric acid to an organic solvent containing 2-chloropropionaldehyde and stirring the mixture at a te...
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JP2999889B2 |
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JP2997078B2 |
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JPH11322741A |
To obtain a new cyclic formal used as a raw material monomer for resins, fibers, etc., as a polymer material, and useful as a plastic material. 1,3,5,7,10,13-Hexaoxacyclopentadecane is shown by the formula. The compound of the formula is...
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JPH11315075A |
To produce a 2-alkenyl-1,3-dioxo compound useful as a perfume, a raw material for medicines and agrochemicals, an organic synthetic intermediate or a polymeric material by reacting a specific unsaturated aldehyde with a specified hydroxy...
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JP2969384B2 |
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JPH11286486A |
To obtain a new compound having immunosuppression activity, antiallergic activity, antitumor activity and multidrug resistance overcoming action and useful as an inhibitor for immunorejection due to organ transplantation, etc., a therape...
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JPH11269165A |
To prevent the change of a cyclic formula during storage or the like with time and the change in quality of the subject compound without exerting an undesirall influence on the qualities of its (co)polymerizability and its formed (co)pol...
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JPH11228402A |
To obtain a new anticancer agent capable of solving the defect of conventional anticancer agent with serious adverse effects, etc., having a wide anticancer spectrum by including a cryptoporic acid derivative having a specific structure ...
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JPH11207187A |
To obtain an acid catalyst for synthesis of trioxane excellent in heat resistance, less liable to deteriorate and less liable to cause the elimination of the functional group of the acid catalyst by supporting a fluorine-contg. org. mate...
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JP2919978B2 |
Polymerisable calixarene and oxacalixarene derivatives wherein at least one aryl group of the macrocyclic ring has a phenolic side chain of the formula VII: wherein Z is a group containing an acrylate or methacrylate functional group. Pa...
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JP2916953B2 |
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JP2908693B2 |
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JPH11506765A |
The present invention relates to methods for the preparation of disubstituted cyclic ureas of the formula (IV): from linear diaminodiols. These cyclic urea compounds are useful as HIV protease inhibitor compounds for the treatment of HIV...
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JP2906220B2 |
A process for producing trioxane comprising an aqueous formaldehyde solution with an acidic catalyst, wherein the concentrations of methanol and formic acid present in reaction system are controlled each at 0.5-5 wt.% and the concentrati...
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JPH11106384A |
To obtain the subject new compound, comprising a calixarene compound having a cross-linked structure and useful as an Na ion selective coloring matter, having high sensitivity to Na ions and hardly affected with Li ions or the like for a...
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JP2884430B2 |
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JP2877682B2 |
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JP2877731B2 |
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JP2877726B2 |
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JPH1180150A |
To provide a new calixarene compound having crosslinked structure and suitably usable as a sodium ion selective ionophore for ion-selective electrode, etc. This calixarene compound is expressed by formula I (R<1> , R<2> and X are each in...
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JP2869259B2 |
An energy-saving process for the production of trioxane which comprises forming an aqueous solution of formaldehyde, synthesizing trioxane from formaldehyde in the aqueous solution in the presence of a solid acidic catalyst and extractin...
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JP2863437B2 |
PURPOSE: To reduce the amounts of methanol and formaldehyde present in trioxane in a process for purifying the trioxane. CONSTITUTION: This process for purifying trioxane from it solution containing ≤10% methanol and formaldehyde by se...
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JP2860055B2 |
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JPH1149768A |
To obtain a new antibiotic with insecticidal and microbicidal abilities. This antibiotic is NA30851A shown by the formula. Its production is conducted by culturing aerobically an NA30851A-producing bacteria belonging to the genus Strepto...
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