Matches 401 - 450 out of 602 < 1 2 3 4 5 6 7 8 9 10 11 12 13 >
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4504404 Lubricant compositions containing chlorinated organic compounds  
The load-carrying capacity of liquid lubricants having a kinematic viscosity of 2 to 1500 mm 2 /s at 40° C. can be substantially improved by the addition of oil-insoluble, dispersible aromatic...
4496567 Phenyl alkylaminopyrimidones  
The compounds are phenyl alkylaminopyrimidones which are histamine H 2 -antagonists. A specific compound of the present invention is...
4477663 Intermediates for preparing substituted pyrimidinones  
A series of chemical reactions starting from the condensation of uracil with an acid stable heterocyclic aldehyde in an acid medium produces biologically active end products which are...
4476305 2-Substituted 5-vinylpyrimidines, polymers obtainable therefrom and preparation thereof  
The invention relates to 2-substituted 5-vinylpyrimidines of the formula ##STR1## wherein X is 2-pyridyl or 2-pyrimidyl, unsubstituted or substituted by methyl or ethyl groups. The compounds of...
4465839 Process for the production of hydantoins  
The invention relates to a process for the production of compounds containing at least one hydantoin ring by reacting a carbodiimide with derivatives of succinic acid anhydride corresponding to the...
4465840 Process for the production of (thio) hydantoins  
This invention relates to a process for the production of compounds containing at least one (thio)-hydantoin ring in the molecule by reacting a carbodiimide with hydroxy- or mercapto-succinic acid...
4463005 Bicyclic guanidines  
The invention relates to bicyclic derivatives which are histamine H-2 antagonists and which inhibit gastric acid secretion. According to the invention there is provided a guanidine derivative of...
4447431 Tri-substituted imidazole derivatives, pharmaceutical preparations containing them, and their use  
The invention relates to novel tri-substituted imidazole derivatives, especially compounds of the general formula I ##STR1## in which R 1 and R 2 represent, independently of each other,...
4442290 Development restrainer release compounds  
There are described novel compounds which are represented by the formula ##STR1## wherein R is ##STR2## A is sulfur or selenium; X represents the nonmetallic atoms necessary to form a nucleus which...
4433085 Triazolidine-3,5-dione/formaldehyde/amine condensates and compositions thereof  
A triazolidine-3,5-dione/formaldehyde/amine condensate is disclosed of the formula ##STR1## in which wherein the terms R 1 , R 2 and R 5 are defined hereinafter in the specification a process...
4423047 Pyrimidine-2-sulphides and their S-oxides for use in medicine and methods of use therefor, pharmaceutical compositions containing them, processes for their preparation and per se novel sulphides and S-oxides  
Compounds of the formula ##STR1## (wherein X represents a halogen atom; n is 0, 1 or 2; R 1 and R 2 , which may be the same or different, each represents a hydrogen atom or a carboxyl, esterified...
4416817 3-Methoxy-2-oxoazetidine derivatives and their production  
Novel 3-methoxy-2-oxoazetidine derivatives, which are shown by the following formula ##STR1## wherein R 1 is amino, acylated amino or protected amino, are of value as intermediates for the...
4413999 Amidoxime derivatives, processes for the preparation  
The invention provides amidoxime derivatives of the general formula ##STR1## wherein R 1 is an alkyl group of 1 to 8 carbon atoms, phenyl, a heterocyclic ring structure of 5 to 8 atoms containing...
4405621 Heterocyclic thioureas, isothioureas, guanidines and nitromethylene-amidines  
The compounds are C 2 -C 8 straight chain alkanes terminally substituted, symmetrically or unsymmetrically, by N-(N'-substituted guanidino), N-(N',N"-disubstituted guanidino), N-(N'-substituted...
4404379 Cycloaminals and a process for their preparation  
The present invention is concerned with a new class of compounds prepared by reacting cyclic aminals of the formula ##STR1## with polyisocyanates of the formula R 5 (NCO) m +n to yield ##STR2##...
4399140 5-Halo-pyrimidin-2-ones, the salts thereof  
Compounds of the formula: ##STR1## wherein X represents a halogen atom; R 1 and R 2 , which may be same or different, each represents a hydrogen atom, or a C 1 -4 alkyl group; Het represents...
4398027 Preparation of pigmentary form isoindoline  
A process for converting finely particled agglomerated crude isoindoline pigments of the formula ##STR1## where A is ##STR2## and B is the radical of an unsubstituted or substituted barbituric...
4353833 Cationic dyes  
Compounds of the general formula I ##STR1## where the radicals A, A 1 and B are identical or different and A is unsubstituted or substituted benzene or heteroaromatic, A 1 , if n=1, is...
4349663 Bis(cyclic ureas) monomer compositions useful in making polyurethane polymers  
Bis(cyclic ureas) are disclosed which have the formula ##STR1## wherein R is ##STR2## and C n H 2n is ethylene or 1,3-propylene each of which can be substituted by one or more inert substituents....
4340743 Derivatives of mono-(alkylene ureido alkyl) ureas, and bis-(alkylene ureido alkyl) ureas  
The invention provides new compounds which are cyclic alkylene ureas produced by the reaction of an alkylene urea selected from the group consisting of a mono-(alkylene ureido alkyl) urea, a...
4339453 Antimicrobial aminopyrimidinium salts  
4-Amino- and 2,4-diaminopyrimidines with a quaternized ring nitrogen and an oxygen bearing substituent such as hydroxyalkyl, alkoxyalkyl, or alkanoyl on one of the exo- or endocyclic nitrogens and...
4333936 Novel amidino-benzylpyrimidines, processes for their manufacture and antibacterial and antiprotozoal use thereof  
5-Benzyl-4-amino-pyrimidine-2-amidines which may or may not be substituted in the phenyl ring, and their physiologically acceptable addition salts with acids, processes for their preparation, drugs...
4323362 Dyed paper  
Compounds of the general formula A 1 CH--B--CHA 2 where A 1 and A 2 are the radical of a quaternized methylene-active compound and B is a bridge member. The compounds according to the...
4315931 N-Pyrimidinyl-imidoacid esters and drugs containing the said compounds  
Unsubstituted or substituted 5-phenyl- and 5-benzyl-4-amino-pyrimidine-2-imidoacid esters, their preparation, drugs containing these compounds, and their use in infectious diseases.
4288147 Electro-optical composition of the guest-host type  
The electro-optical composition comprises a host liquid crystal and guest dichroic dye which is characterized generally as a linear, noncondensed aromatic compound including one or more quinonoid...
4279902 Anti-arrhythmia agents  
Acetamide derivatives are provided having the structure ##STR1## wherein X is a single bond, --CH 2 -- or --O--, R 1 and R 2 may be the same or different and are lower alkyl, phenyl-lower...
4276290 Phosphonoureide and phosphonothioureide anthelmintics  
This invention relates to novel anthelmintic compounds containing an arylene or divalent heterocyclic ring whose free valences are satisfied by (1) a disubstituted phosphoryl ureido or...
4275223 Preparation of trans-cyclohexane-1,4-diurethanes  
A process is disclosed for selectively making trans-cyclohexane-1,4-diisocyanate, trans-cyclohexane-1,4-diamine, a trans-cyclohexane-1,4-diurethane, a trans-cyclohexane-1,4-diurea and...
4269976 Pigment of sodium salt of bis-methine-barbituric acid  
The invention relates to the pigment of the formula ##STR1## It colors plastic materials and lacquers in greenish-yellow shades of good lightfastness.
4269837 Hypoglycemic guanylamidines, compositions and use  
Novel guanylamidines and the pharmaceutically acceptable acid addition salts thereof having activity as hypoglycemic agents are disclosed.
4262851 Process for converting crude and/or coarsely crystalline perylenetetracarboxylic acid diimides to a pigmentary form  
A process for converting a crude, coarsely crystalline perylene-3,4,9,10-tetracarboxylic acid diimide of the formula ##STR1## where A is unsubstituted or substituted phenyl, an unsaturated...
4262121 Hexahydropyrimid-4-yl ethers and their preparation  
Novel hexahydropyrimid-4-yl ethers and a process for the preparation of hexahydropyrimid-4-yl ethers by reacting hexahydropyrimidines with alcohols at above 110° C. The hexahydropyrimid-4-yl...
4260757 Poly[di-1,2-(diazinylidene)-ethene-1,2-diols]  
Poly[di-1,2-(diazinylidene)-ethene-1,2-diols] having the structure: X--C 4 H 2 N 2 --C(OH)C(OH)--C 4 H 2 N 2 --C(OH) ] n C(OH)--C 4 H 2 N 2 --Y in which the C 4 H 2 N 2 group is a...
4260729 Polyurea polymers formed from polyethers having terminal amino groups  
Polyurea polymer compositions produced by reaction of isocyanates with compounds having terminal amino groups, said compounds being of the formula ##STR1## wherein z is 2 or 3, X is oxygen or...
4259488 Bis-isoindoline pigments  
Isoindoline pigments of the formula ##STR1## or of a formula which is a tautomer thereof, wherein R represents a direct bond or an aliphatic, cycloaliphatic, aliphatic-cycloaliphatic, araliphatic...
4258186 Process for the preparation of blocked polyisocyanates  
A process for the preparation of blocked polyisocyanates which comprises reacting a polyisocyanate with a cyclic amidine of the formula: ##STR1## wherein R are the same or different substituents...
4258181 Substituted 9,10-anthracenebishydrazones  
This disclosure describes anthracene-9,10-bis-carbonyl-hydrazones and derivatives thereof useful as antibacterial agents, for inhibiting the growth of transplanted mouse tumors, and for inducing...
4256887 1,2,4-Triazoles and a method for their preparation  
Triazoles substituted at the 3 and 5 positions having an optional substituent in the 1 position are provided. Methods of preparing the novel substituted triazoles are described. The substituted...
4250294 Polymers obtained from polynitroaromatic compounds  
A polymer having aromatic or heterocyclic rings as the only structural elements said aromatic or heterocyclic rings containing at least two nitro groups is disclosed as well as a method of...
4248619 Bis[pyrimidyloxy(thio)]benzene derivatives  
The invention concerns novel compounds of the formula I ##STR1## wherein W and X are independently chosen from oxygen and sulfur. The compounds are herbicides and in further embodiments the...
4235996 Bis(2-imida zolin-2-ylhydrazone)-9,10-dihydro-9,10-anthracenedicarboxaldehydes  
This disclosure describes 9,10-dihydroanthracene-9,10-dicarboxaldehyde-bis-hydrazones and derivatives thereof useful as antibacterial agents, for inhibiting the growth of transplanted mouse tumors,...
4228282 Lubricating oil additive  
A new class of compositions, tetrahydropyrimidyl-substituted compounds, useful as ashless bases and rust inhibitors, is prepared by reacting a C 3 -to C 5a amine containing a 1,3-diaminopropane...
4227000 Intermediates in the process for making histamine antagonists  
A process for making substituted 2-aminopyrimidones which are histamine H 2 - antagonists which comprises reacting a 2-nitroaminopyrimidone with a heteroarylalkylamine,...
4225712 Tetrahydropyrimidyl-substituted compounds  
A new class of compositions, tetrahydropyrimidyl-substituted compounds, useful as ashless bases and rust inhibitors, is prepared by reacting a C 3 -to C 50 amine containing a 1,3-diaminopropane...
4217350 Oxygenated N-aryl-diazacyclic compounds  
A process known per se for the manufacture of oxygenated N-aryl-diazacyclic compounds of the formula ##STR1## wherein each of R 1 and R 2 represents a substituted or unsubstituted aryl group and...
4216318 Heterocyclic alkyl 4-pyrimidones  
The compounds are substituted isocytosines which are histamine H 2 -antagonists. Two specific compounds of the present invention are...
4198513 1,2,4-Triazoles  
Triazoles substituted at the 3 and 5 positions having an optional substituent in the 1 position are provided. Methods of preparing the novel substituted triazoles are described. The substituted...
4187373 Novel dihydrobenzanthracene derivatives  
This disclosure describes benzanthracene-5,12(or 7,12)-dicarboxaldehyde-bis-hydrazones and the 5,12(or 7,12)-dihydrobenzanthracene-5,12(or 7,12)-dicarboxaldehyde-bis-hydrazones useful as...
4185104 Tranquillizing complexes  
Discrete tetrameric complexes of malonylurea derivatives are described in which the properties expected of the individual malonylurea derivatives are beneficially modified. The complexes are of...
4179577 Polymerisable esters derived from a phenolic unsaturated ketone  
The esters are soluble in an aqueous solution of a base before exposure to actinic radiation but, on exposure to actinic radiation, polymerize and become insoluble in such an aqueous solution....
Matches 401 - 450 out of 602 < 1 2 3 4 5 6 7 8 9 10 11 12 13 >