Matches 101 - 150 out of 356 < 1 2 3 4 5 6 7 8 >


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5470837 5'-vinylhalo-aristeromycin/adenosine analogs and immunosuppressants  
The present invention relates to a method of effecting immunosuppression in a patient in need thereof comprising administering to said patient an effective immunosuppressive amount of certain...
5466819 Coupled benzotriazole and benzophenone UV absorbers  
Provided are ultraviolet stabilizers which are diphenylmethane compounds of the formula: ##STR1## wherein: R1 and R2 are independently C1 to C8 alkyl, cyclopentyl, cyclohexyl or cumyl; and X is...
5463072 Process for the preparation of naphtholic 2-equivalent cyan couplers  
Compounds of formula I ##STR1## wherein A denotes a group having an electron acceptor character; Az denotes a group for completing a 5-membered heteroaromatic ring (azole ring) to which a 5- or...
5459222 UV-absorbing polyurethanes and polyesters  
Polyurethanes and polyesters are described which are the reaction products of an aromatic, aliphatic or cycloaliphatic diisocyanate, or of a diacid or diacid derivative respectively, with a diol...
5440035 Heterocyclic amide derivatives  
The invention concerns novel, pharmaceutically useful, amide derivatives of certain benzoheterocyclylalkanoic acids (and related tetrazoles and acylsulphonamides) of the formula I and salts...
5438142 Functionalized tris(hydroxyphenyl) compounds  
Compounds useful as polymer stabilizers which are polymerizable into condensation polymer systems are disclosed and claimed. A particularly preferred embodiment is...
5436322 Azo coupling of 2-nitroanilines with 2,4,-disbustituted phenols  
A process for the preparation of compounds of the formula I is described ##STR1## in which R1 and R2 independently of one another are C1 -C7 alkyl; and R3 is hydrogen or halogen, by reaction of a...
5436349 Compositions stabilized with 5-sulfonyl-substituted benotriazole UV-absorbers  
2-(2-Hydroxyphenyl)-2H-benzotriazole UV-absorbers substituted at the 5-position of the benzo ring by a sulfoxide or sulfone group exhibit enhanced absorption in the near visible range (over 350...
5407592 Multifunctional additives  
A lubricant of fuel composition contains a multifunctional antioxidant/metal deactivating and thermal stabilizing amount of a tolyltriazole-derived Mannich base made from a tolyltriazole, an...
5387691 2-(benzotriazol-2-yl)-4-alkyl-6-(2-hydroxy-3-benzoyl-6-alko xybenzyl)phenols and stabilized compositions  
2-(Benzotriazol-2-yl)-4-alkyl-6-(2-hydroxy-3-benzoyl-6-alkox ybenzyl)phenols am prepared by reacting a Mannich base of a 2-(2-hydroxy-5-alkylphenyl)-2H-benzotriazole with a...
5380875 Hydroxyproline derivatives and preparative process therefor  
Provided are N-(9-fluorenylmethoxycarbonyl)-4-substituted proline derivatives represented by the following formula (I): ##STR1## wherein Q is O or S, R represents a particular monovalent group,...
5362411 Antirust/dispersant additive for lubricants  
Reaction products of hydrocarbylsuccinic anhydrides, polyamines and triazoles, as exemplified by XRT 2143A, have been found to be effective rust/corrosion inhibiting, thermal stabilizing and...
5328625 Lubricant compositions comprising triazole-derived acid-esters or ester-amide-amine salts as antiwear additives  
Organic triazole-derived carboxylic acid-esters, and ester-amide-amine salts have been found to be effective antiwear additives for lubricants.
5319091 Process for sulfur containing derivatives of hydroxyphenyl/benzotriazoles  
A composition that, when present in a polymer matrix, reduces the deleterious effect of UV light absorption by the polymer is provided, which comprises a sulfur-containing derivative of...
5312852 2-(2-hydroxy-3-perflu oroalkylthiomethyl-5-alkylphenyl)-2H-benzotriazoles, processes for preparing them and stabilized compositions thereof  
2-(2-Hydroxy-3-perfluoroalkylthiomethyl-5-alkylphenyl)-2H-be nzotriazoles are prepared by reacting the Mannich base hydrohalide or quaternary salt of a 2-(2-hydroxy-5-alkylphenyl)-2H-benzotriazole...
5276161 Process for the preparation of benzotriazoles  
2-(2-Hydroxyphenyl)-2H-benzotriazoles of the formula ##STR1## in which R is hydrogen, C1 -C12 alkyl or C1 -C4 alkoxy, R1 is hydrogen, C1 -C12 alkyl, C5 -C6 cycloalkyl, phenyl or phenyl-C1 -C4...
5274015 Compositions comprising sulfur-containing derivatives of hydroxyphenylbenzotriazole and process therefor  
A composition that, when present in a polymer matrix, reduces the deleterious effect of UV light absorption by the polymer is provided, which comprises a sulfur-containing derivative of...
5262541 Fluorenol catalyzed reduction of o-nitroazobenzenes and 2-aryl-2H-benzotriazole-N-oxides  
A process for producing 2-aryl-2H-benzotriazole by reducing an o-nitroazobenzene with a saccharide having an aldehyde group as a reducing agent in the presence of fluorenol as a catalyst and a...
5256661 Substituted 2-aminotetralins and pharmaceutical use  
Certain novel compounds having the structural formula ##STR1## where R2, R3 and R4 are each selected from the group consisting of H and OA; A is H or is selected from the group consisting of...
5250698 2-(2-hydroxy-3-perfluoroalkyl thiomethyl-5-alkylphenyl)2H-benzotriazoles and stabilized compositions thereof  
2-(2-Hydroxy-3-perfluoroalkylthiomethyl-5-alkylphenyl)-2H-be nzotriazoles are prepared by reacting the Mannich base hydrohalide or quaternary salt of a 2-(2-hydroxy-5-alkylphenyl)-2H-benzotriazole...
5243047 Triazole/thiazole amino-s-triazine bonding agents  
A compound contains a ligand group and at least one group of the general formula --XRn where X is a linking group which contains at least one hetero-atom, R is a saturated hydrocarbyl group...
5237071 Process for preparing 2,2'-methylene-bis(6-(2H-benzotriazol-2-yl)-4-hydrocarbyl phenols)  
A method for preparing 2,2'-methylene-bis-[6-(2H)-benzotriazol-2-yl)-4-hydrocarbyl phenols] is disclosed. According to the process (i) formaldehyde, a dialkylamine and a...
5235058 3(5)-hydrazinopyrazole compounds  
There is disclosed a 3(5)-hydrazinopyrazole compound represented by the following formula (I): ##STR1## wherein R1 represents a hydrogen atom, an alkyl group, an aryl group, a heterocyclic group,...
5233047 Benzotriazole UV absorber hydrazides  
Hydrazide functionalized benzotrialzole and oxanilide ultraviolet absorbers (Formulas I and II) useful for stabilizing coreactive or inert polymeric compositions and novel intermediates (Formula...
5229521 Process for the preparation of symmetrical 2,2-methylenebisbenzotriazolyl phenols  
Compounds of formula ##STR1## wherein R1 is hydrogen alkyl, alkoxy, phenyl, phenylaklyl or halogen, and R2 is alkyl phenyl, phenylaklyl or cycloalkyl, are prepared by reacting a compound of...
5206378 Hydrazido functionalized 2-(2-hydroxyphenyl)-2H-benzotriazoles  
Ultraviolet light stabilizers are chemically bound to anhydride containing polymers or copolymers. Polymeric stabilizers are prepared by the reaction of primary amino or hydrazido-substituted UV...
5190942 Benzoxazole and related heterocyclic substituted imidazole and benzimidazole derivatives  
Novel compounds are disclosed having the formula ##STR1## wherein X, Y, R1, R2, R3, R4, and R5 are as defined herein. These compounds inhibit the action of angiotensin II and are useful,...
5190565 Sulfonated 2-(2'-hydroxyaryl)-2H-benzotriazoles and/or sulfonated aromatic formaldehyde condensates and their use to improve stain resistance and dye lightfasteness  
A new class of sulfonated 2-(2'-hydroxyaryl)-2H-benzotriazole compounds and method for using them and other sulfonated hydroxyaryl benzotriazoles on nylon fibers to improve stain resistance and...
5190574 Herbicidal pyrazolyloxy and pyrazolylamino-benzotriazoles  
A herbicidal compound of formula (I): ##STR1## in which the dotted line indicates the presence of two double bonds arranged so as to form a fused hetero-aromatic ring system; Py is an optionally...
5187289 Method of preparing 2-phenyl benzotriazoles  
A method of preparing 2-phenylbenzotriazoles expressed by Formula I: ##STR1## (wherein R1 denotes a hydrogen or chlorine atom, a lower alkyl group having 1 to 4 carbon atoms, a lower alkoxyl group...
5182403 Substituted 3(5'indazolyl) oxazolidin-2-ones  
The present invention relates to 3 indazol substituted 5 Beta amidomethyloxazolidin-2ones, useful as antibacterial agents and to intermediates for their production.
5166355 Process for preparing substituted 2,2'-methylene-bis-[6-(2H-benzotriazol-2-yl)-4-hydrocarbyl-phenols]  
A method is described for preparing compounds of Formula I and Formula II: ##STR1## R1 is an alkyl group of one to twelve carbon atoms or a cycloalkyl group of five to eight carbons, X is chloro...
5164510 5'Indolinyl-5β-amidomethyloxazolidin-2-ones  
The present invention relates to 5'-indolinyloxazolidin-2-ones (XI) ##STR1## 3-(fused-ring) substituted)phenyl-5β-amidomethyloxazolidin-2-ones (XXI) ##STR2## and 3-(nitrogen...
5162405 Single-functional and mixtures of multi-functional oligomeric performance additive compositions and their uses  
The present invention comprises novel single-functional and mixtures of multi-functional oligomeric performance additive compounds having one or more components of Structure A R1 ? ? ##STR1## (The...
5142059 Monosulfonated 2-(2'-hydroxyphenyl)-benzotriazoles  
Monosulfonated 2-(2'-hydroxyphenyl)-benzotriazoles of the formula ##STR1## in which R1 is hydrogen or chlorine and one of R2 and R3 is chlorine or lower alkyl and the other is a radical of the...
5128267 Naphthotriazolium salts  
Naphthotriazolium salts which are chromogenic indicators for reducing substrate, such as NADH or NADPH.
5115337 Nonlinear optical material  
A nonlinear optical material comprising a compound represented by formula (I) ##STR1## wherein Z1, Z2, R1, X and n are as defined before, or a compound represented by formula (II) ##STR2## wherein...
5104992 Method of preparing 2-phenyl benezothriazoles  
A method of preparing 2-phenylbenzotriazoles expressed by Formula I: ##STR1## (wherein R1 denotes a hydrogen or chlorine atom, a lower alkyl group having 1 to 4 carbon atoms, a lower alkoxyl group...
5099027 2(2-hydroxyphenyl)2H-benzotriazole compounds and homopolymers or copolymers thereof  
Polymerizable ethylenically unsaturated monomers comprising the reaction product of a 1,2-epoxy group-containing polymerizable ethylenically unsaturated monomer and a...
5097041 Purification of 2-aryl-2H-benzotriazoles  
There is disclosed a process in which a melt of a 2-aryl-2H-benzotriazole containing colored contaminants, or a solution thereof in an organic nonpolar solvent, is purified by treatment with a...
5095062 Stabilized compositions containing liquid substituted 2H-benzotriazole mixtures  
Liquid substituted, 2H-benzotriazole mixtures are prepared by alkylation with concomitant dealkylation, fragmentation and realkylation of 2-(2-hydroxy-5-alkylphenyl)-2H-benzotriazoles or of...
5081258 Bisbenzotriazoleureas as UV stabilizers for polymers  
A hydroxyphenyl-benzotriazole bisurea UV light stabilizer for organic polymers and a process for making it are provided. The stabilizer is particularly useful for spandex polymer yarns that are...
5071995 2-hydroxyphenylbenzotriazol compounds and the use thereof  
Provided are 2-hydroxyphenylbenzotriazol compounds with excellent ultraviolet absorbability and high thermal stability. They can be used as ultraviolet absorber for any polymer.
5066656 Pharmacologically active (6,7-dihydro-5H-pyrrolo[1,2-c]imidazol-5-yl)- and (5,6,7,8-tetrahydroimidazo[1,5-a]pyridin-5-yl) substituted 1H-benzotriazole derivatives  
(6,7-dihydro-5H-pyrrolo[1,2-c]imidazolyl-5-yl)- and (5,6,7,8-tetrahydroimidazo[1,5-a]pyridinyl-5-yl) substituted 1H-benzotriazole derivatives, compositions containing the same and methods of...
5055587 Process for preparing 1H-pyrazolo-[5,1-c]-1,2,4-triazole compounds  
A process for preparing a 1H-pyrazolo[5,1-C]-1,2,4-triazole compound represented by the following general formula (I): ##STR1## wherein R1 represents a hydrogen atom or a substituent group, R2...
5043469 Process for preparing 5-substituted aminophenols  
Process for the introduction of functional or functionalizable substituents para to the amino group in 2-aminophenols and 3-aminophenols. The process proceeds in one step, with substitution...
5039689 Antiparasitic 3(4-amino benzotriazo-1-yl-)1,2-cyclopentanediols  
The present invention relates to the use of a compound of formula (I) ##STR1## wherein R represents a hydrogen atom; a C1-4 alkyl group; a group COR1 wherein R1 represents amino or C1-4 alkoxy; or...
5032498 Compositions and photographic materials containing 2-(2-hydroxyphenyl)-benztriazoles, as UV-absorbers  
The novel UV-absorbers are compounds of the formula ##STR1## in which R1 is, for example, hydrogen, n is one of the numbers 1 or 2 and R2 is an appropriate monovalent or divalent radical, for...
5030731 Coating material stabilized against the action of light  
Blocked benzotriazoles of the formula I or II ##STR1## wherein x is 1 or 2, R1 in the case of x=1 and in the formula II is an acyl group of the formula --CO--R5, a sulfonyl group of the formula...
5026628 Photographic material and process comprising a compound capable of forming a wash-out dye  
Photographic compound (A) capable of releasing a photographically useful group is represented by the formula: SOL-CAR-LINK-PUG wherein SOL is a water-solubilizing group; CAR is a carrier moiety...

Matches 101 - 150 out of 356 < 1 2 3 4 5 6 7 8 >