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Matches 801 - 850 out of 929

Document Document Title
JPS62175478A
PURPOSE: To suppress formation of a very small amount of a polymer occurring in storing or transportation of a trioxan monomer and to stabilize trioxan so as not to have a bad influence on polymerization reaction, by using a noncyclic et...  
JPS62156125A
A composition comprising a cyclic oligomer of the formula Ia. Ib. wherein X is selected from the group consisting of alkylene of two to twelve carbon atoms, inclusive, alkylidene of one to twelve carbon atoms, inclusive, cycloalkylene of...  
JPS6223749B2
Novel cyclic and acyclic phenylene substituted dialkyl peroxides, most of which are in an acyclic polymeric form, useful as polyethylene cross-linking agents.  
JPS6256485A
NEW MATERIAL:A compound expressed by formula I [R1WR3 are H, 1W20C alkyl or aromatic ring-containing group; R4 is formula II, III or IV (X is electron attractive group; l is 1 or 2; m and n are integers ≤3)]. EXAMPLE: 6-Octyl-6-(2'-hyd...  
JPS624391B2  
JPS623149B2
NEW MATERIAL:An alkali metal-TCNQ-crown compound complex of formula I (M is alkali metal; TCNQ is tetracyaoquinodimethane; CR is monocyclic or bicyclic crown compound; m, n are 1 or 2; at least one of m and n is 1). EXAMPLE:15-Crown-5-co...  
JPS6157299B2
1. Process for the preparation of macrocyclic polyethers composed of identical or different structural units of the formula -[CR**1R**2-CR**3R**4-A]x - in which A represents ether oxygen and the group see diagramm : EP0176076,P5,F1 R**1,...  
JPS6154796B2  
JPS61502132A
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.  
JPS61212589A
NEW MATERIAL:The compound of formula I (R1 is H or 1W28C hydrocarbon group; R2O is 2W4C oxyalkylene; n is 1W4). EXAMPLE: N-hydro-2,12-morpholyl-1,4,7,10-tetraoxacyclododecane. USE: Alkali metal scavenger, metallic ion separator, etc. It ...  
JPS61207414A
PURPOSE: A crown ether polymer excellent in mechanical strength, film formability, adsorptivity of metal ions, etc., obtained with (meth)acrylic acid and radical-polymerizing the product. CONSTITUTION: A vinyl crown ether monomer of form...  
JPS61204175A
The new composition of matter, 2,2'-isopropylidine bis(tetrahydrofuran) and method of preparation.  
JPS6131108B2  
JPS61501029A
Platinum and crown ether complexes having the general formula (I), wherein C is a mono- or bicyclic crown ether, A is ammonia or a mono- or di-Cl-C4-alkylamine or an amine function contained in the crown ether and X is halogen or the ani...  
JPS6120597B2  
JPS6181A
PURPOSE: To make it possible to use an aqueous solution of HCHO in a high concentration and obtain the titled compound useful as a raw material for acetal resins without side reactions, by reacting HCHO in the liquid phase in the presenc...  
JPS6180A
PURPOSE: To suppress the side reaction and obtain the titled compound, by reacting formaldehyde in the liquid phase in the presence of a combined catalyst of an oxy acid or oxide of Mo or W and oxy acid or oxide of P, Cr or Si under heat...  
JPS6052749B2  
JPS6034955B2
Process for isolating 1,4,7,10,13,16- hexaoxacyclooctadecane (A) in high yield from a mixture also containing other macrocyclic polyethers, by reacting A with nitromethane in the presence of a solvent for these macrocyclic polyethers, to...  
JPS60149589A
NEW MATERIAL:Crown dihydrocodeinone of natural type shown by the formula I and crown codeinone of natural type. USE: A drug having a structure of natural type, properties of opiate and properties of ionophore at the same time. PREPARATIO...  
JPS6064982A
NEW MATERIAL:Non-natural type crown dihydrocodein of formula I . USE: A medicament which has combination of properties as opiate and ionophorones. PREPARATION: A thebaine iron complex of formula II is treated with boron tribromide to for...  
JPS6042379A
NEW MATERIAL:A copolymerized macrocyclic oligoester shwon by the formula (x and y are 1W6 integer; z is 2W14 integer) of salicycic acid and m-cresotinic acid. USE: An artificial ionophore (ion carrier). Having void with orientated ester ...  
JPS6028970A
NEW MATERIAL:The linear oligoester of formula I or cyclic oligoester of formula II. USE: It has metallic ion capturing activity. It exhibits similar activity as natural ionophores, and has antibacterial activity. The compound can be used...  
JPS6028980A
NEW MATERIAL:The compound of formula I (Me is methyl). USE: For the preparation of opiate having the property of opiate as well as that of ionophore, and having improved activity by preventing the change in the steric structure of the op...  
JPS601179A
PURPOSE: To obtain trioxane in high yield, be reacting formaldehyde in a liquid phase in the presence of a catalyst of hetero-poly-acid under heating. CONSTITUTION: Formaldehyde is reacted in a liquid phase preferably in a halogenated hy...  
JPS59227880A
PURPOSE: To obtain polymerizable trioxane in high purity having improved storage stability, by adsorbing trioxane and/or a solution of crude trioxane containing an organic solvent on synthetic zeolite and then an anion exchange resin. CO...  
JPS59225178A
NEW MATERIAL:The Schiff base-type biscrown ether of formula I (m is 3 or 4). USE: A potassium absorbent. Acomponent of potassium-selective electrode. The compound has strong selective coordination activity to a potassium salt. PREPARATIO...  
JPS5946266B2
1530044 Cyclic perketals ARGUS CHEMICAL CORP 13 Jan 1976 [30 June 1975] 21096/78 Divided out of 1530043 Heading C2C [Also in Division C3] Cyclic peroxides of general formula are prepared by reaction of ketone with alkyl dihydroperoxide R...  
JPS59196885A
NEW MATERIAL:A compound shown by the formula I (m is 3, or 4; n≥1). USE: Since the titled ether has highly selective coordination ability on potassium salts, it is useful as a selective absorbent for potassium salts, and an electrode c...  
JPS59186975A
PURPOSE: To separate trioxane, by bringing an aqueous solution of formaldehyde containing the trioxane into contact with an inert fluid in the supercritical state, and reducing the pressure or changing the temperature of the resultant in...  
JPS59186976A
PURPOSE: To improve the trioxane conversion in obtaining the trioxane by bringing an aqueous solution of formaldehyde into contact with an acid catalyst, by carrying out the reaction in the presence of an inert fluid in the superctritica...  
JPS59181274A
PURPOSE: To produce highly concentrated trioxane from a reactio system, with simple operation in an improved rate of conversion, by carrying out the synthesis of trioxane in an inert fluid which is in a supercritical state or in a state ...  
JPS59135225A
PURPOSE: The titled polyketone having an excellent action of scavenging cations by forming complexes with them and suited as a ctaion-scavenging agent or the like, obtained by reacting a dicarboxylic acid with a dibenzocrown ether. CONST...  
JPS5927351B2
Cyclic polyethers of the general formula IN WHICH N IS AN INTEGER FROM 3 - 11, PARTICULARLY FROM 4 - 6, ARE PREPARED BY OLIGOMERIZATION OF ETHYLENE OXIDE IN THE PRESENCE OF BORON TRIFLUORIDE, PHOSPHORUS PENTAFLUORIDE OR ANTIMONY PENTAFLU...  
JPS59519B2
The invention relates to a process for preparing cyclic polyethers by oligomerisation of ethylene oxide in the presence of a catalyst, wherein the oligomerisation is carried out in the presence of an acidic inorganic fluoride and in the ...  
JPS5844651B2
A mixture containing cyclo-olefin in concentrations of from 10 to 40% is subjected to a selective ozonation step to produce a heavy phase containing a mono-ozonide of the cyclo-olefin. The heavy phase is insoluble in the mixture and ther...  
JPS58167584A
PURPOSE: A trioxane aqueous solution containing methanol is fed to a distillation column, the top distillate is extracted with a solvent and the aqueous phase separated is recycled to the distillation column to obtain trioxane used as a ...  
JPS58157782A
PURPOSE: To obtain the titled compound useful as a raw material for preparing polyoxymethylene with reduced energy in high selectivity in high conversion ratio with suppressing side reaction, by reacting catalytically formaldehyde in the...  
JPS58135839A
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.  
JPS5883249A
In an electrode for determining the potassium ion content of a liquid sample to be tested, the electrode including a membrane having incorporated therein an ion selective component, the improvement in which the ion specific component is ...  
JPS5817783B2
Hetero-macrocyclic compound coated on the surface of a solid comprising a reaction mixture of (a) hetero-macrocylic compound having at least one amino group in the molecule and (b) a compound selected from the group consisting of an epox...  
JPS5754507B2  
JPS57144283A
1. Process for the preparation of aliphatic cyclic carbonate, characterised in that urea or carbamates are heated with at least an equivalent amount of analiphatic alcohol of the formula see diagramm : EP0057825,P4,F3 wherein X and Y can...  
JPS57122079A
Substituted macrocyclics are prepared from a macrocyclic substrate having a carbon-hydrogen bond adjacent to a hetero ring atom and a substituent-forming compound in the presence of a chemical initiator.  
JPS5716100B1
A process for purifying a polymerisable monomer selected from the group consisting of cyclic ethers, hydrocarbon olefins, vinyl compounds, aldehydes, lactams of the formula: NH (CH2)x ANGLE ¦ CO wherein x is an integer from 3 to 13 and ...  
JPS5644091B2  
JPS56120682A
NEW MATERIAL:The titled compound of formula I, i.e. 1,4,7,10,13-pentaoxa- [13.2](9,10) anthracenophan. USE: Useful for the separation and extraction of metallic ions, carrier of ionic electrode, ionic transfer, utilization of solar energ...  
JPS5638592B2  
JPS5675487A
The invention relates to a process for the continuous manufacture of trioxan, if appropriate together with cyclic formals, from aqueous formaldehyde solutions in a circulation reactor with an evaporator, wherein the vapor/liquid mixture,...  
JPS5672070A
PURPOSE: An uranyl ion trapping agent comprising a specified macrocyclic hexacarboxylic acid. CONSTITUTION: A macrocyclic hexacarboxylic acid of formula I [wherein X1, X3 and X5 are -COOH, formula II (where R1 is H, an alkyl or aromatic ...  

Matches 801 - 850 out of 929