Abstract: The present invention relates in part to compositions displaying stress relaxation at the polymer-filler interface. The adaptive interface (AI) formed by coupling moieties capable of dynamic covalent chemistry (DCC) within the polymer-filler interface promotes stress relaxation and yields tough, and healable composites.

Abstract: The present invention is directed towards a new class of semi-conducting nonacene derivatives. These compounds are all soluble species and they all possess superior resistance to oxidation as compared to their counterparts that lack the substitution patterns disclosed herein.

Abstract: A halogen-terminated sulfur-containing polymer is represented by: X—(R—Sr)n—R—X wherein R is an ether bond-containing alkyl group having 3 to 26 carbon atoms, X is a halogen atom, n is an integer of 1 to 200, and r has an average of 1 to 5.

Abstract: The present invention provides for monodispersed dendrimers having a core, branches and periphery ends, wherein the number of branches increases exponentially from the core to the periphery end and the length of the branches increases exponentially from the periphery end to the core, thereby providing for attachment of chemical species at the periphery ends without exhibiting steric hindrance.

Abstract: Disclosed are thioethers, methods for preparing such thioethers, and curable compositions, such as coating and sealant compositions, that include such thioethers. The thioethers can be the reaction product of (a) an alpha, omega dihalo organic compound, (b) a metal hydrosulfide, and (c) a metal hydroxide.

Abstract: The invention provides methods for inducing reversible chain cleavage of polymer chains in a crosslinked polymeric material. Reversible cleavage of the polymer backbone is capable of relieving stress in the polymeric material as the bonds reform in a less stressed state. The invention also provides methods for making polymeric materials capable of reversible chain cleavage, materials made by the methods of the invention, and linear monomers containing reversible chain cleavage groups which are useful in the materials and methods of the invention.

Abstract: This invention is in the area of methods and compositions for the inhibition of the expression of VCAM-1 and, in particular, for the treatment of diseases mediated by VCAM-1, including cardiovascular and inflammatory diseases.

Abstract: This invention is in the area of methods and compositions for the inhibition of the expression of VCAM-1 and, in particular, for the treatment of diseases mediated by VCAM-1, including cardiovascular and inflammatory diseases.

Abstract: The invention is directed to physiologically active compounds of formula (I): wherein: R1 is hydrogen, halogen, hydroxy, lower alkyl or lower alkoxy; X1, X2 and X6 independently represent N or CR10; and one of X3, X4 and X5 represents CR11 and the others independently represents N or CR10; where R10 is hydrogen, amino, halogen, hydroxy, lower alkyl, lower alkoxy, lower alkylthio, lower alkylsulphinyl, lower alkylsulphonyl, nitro or trifluoromethyl; and R11 represents a group —L1—Ar1—L2—Y; and the corresponding N-oxides, and their prodrugs; and pharmaceutically acceptable salts and solvates of such compounds and their N-oxides and prodrugs. Such compounds have valuable pharmaceutical properties, in particular the ability to regulate the interaction of VCAM-1 and fibronectin with the integrin VLA-4 (&agr;4&bgr;1).

Abstract: The present invention discloses highly packed polycationic ammonium, sulfonium and phosphonium lipid compounds useful for making lipid aggregates for delivery of macromolecules and other compounds into cells. They are especially useful for the DNA-dependent transformation of cells. Methods for their preparation and use as intracellular delivery agents are also disclosed.

Abstract: Onium salts of substituted phenylmethylbenzene-sulfonate anions with iodonium or sulfonium cations are novel. A chemically amplified resist composition comprising the onium salt as a photoacid generator is suited for microfabrication, especially by deep UV lithography because of many advantages including improved resolution, minimized line width variation or shape degradation even on long-term PED, minimized defect after coating, development and peeling, and improved pattern profile after development.

Abstract: The invention relates to novel o-nitrophenol derivatives and o-nitrothiophenol derivatives of the following structure: where: A1 to A3 are—independently of one another—H, F, CH3, CF3, OCH3, OCF3, CH2CH3, CF2CF3, OCH2CH3 or OCF2CF3; T is O or S; R is an aliphatic or araliphatic radical; and R* is H or R.

Abstract: Presulfurizing process and presulfurization promoter for a desulfurization catalyst to be used in a hydrodesulfurization unit of petroleum refinery of high molecular hydrocarbons, in which fresh metal oxide in said desulfurization catalyst is sulfurized with hydrogen sulfide produced from sulfur-containing compounds in a feed stream. In the invention, a compound having mercapto alkylthio group: HS—CmH2m—S— (in which “m” is an integer of 2 to 4) is added as promoter at a proportion of 10 ppm to 0.5% by weight and presulfurization is promoted at 180 to 260° C.

Abstract: Cyclic aryl ethers, thioethers or amines, and methods for synthesis are disclosed. These cyclic aryl compounds are synthesized by combining a first dinucleophile with a substituted benzene metallized electron-withdrawing complex, having halo or nitro substituen groups, to form a linear bimetallized aryl compound. The linear bimetallized aryl compound is then reacted with a second dinucleophile to form a cyclic bimetallized aryl compound. The metallized electron-withdrawing moieties are then removed from said cyclic bimetallized aryl compound by photolytic demetallation to form a cyclic aryl compound having the formula: ##STR1## wherein: X.sub.1 and X.sub.3 are the same or different and each is a alkyl, heteroalkyl, heterocyclic or aromatic group having up to 6 conjugated rings, optionally substituted;X.sub.2 is benzenen.sub.1 and n.sub.3 are the same or different and each is O, S or N; andn.sub.4 is H or lower alkyl.

Abstract: This invention relates to new bifunctional chelating agents with intermittent chalcogen atoms, pharmaceuticals containing these compounds, their use in radiodiagnostics and radiotherapy, and methods for the production of these compounds.The compound according to the invention has the general formula (I)M--Lwhere M represents a radionuclide and L a ligand of the general formula (II).It was found, surprisingly, that these new, bifunctional chelating agents with intermittent chalcogen atoms and their coupling products with compounds that accumulate specifically are excellently suited for producing radiopharmaceuticals for diagnostic and therapeutic purposes.

Abstract: Compounds of formula I,R--S--CH.sub.2 CH(OH)CH.sub.2 --S--R.sup.4 (I),where R is tert-alkyl of 4 to 20 carbon atoms and 4 is benzothiazolyl, --(CH.sub.2).sub.m --S--CH.sub.2 CH(OH)CH.sub.2 --S--(C.sub.1 -C.sub.16 alkyl), m is 0, or --(CH.sub.2).sub.s --R.sup.7 where s is 1 to 4 and R.sup.7 is benzothiazolyl are effective additives for lubricants, hydraulic fluids or other lubricant systems. Some novel compounds of formula I are claimed.

Abstract: Processes for making poly(thioether ether)s and hydroxy-terminated poly(thioether ether)s are disclosed. The poly(thioether ether)s are made by bulk free-radical polymerization of diallyl ether and an aliphatic C.sub.2 -C.sub.10 dithiol. Liquid polymers are obtained when mixtures of two or more dithiols are used. Hydroxy-terminated products are obtained by reacting the poly(thioether ether)s with allyl alcohol under free-radical conditions.

Abstract: A sequential block copolymer of the formula:R.sup.1 X--[C.sub.y H.sub.2y O).sub.m)C.sub.x H.sub.2x O).sub.n --H](I)containing: (i) a moiety R.sup.1 X derived from a starter molecule having at least one active hydrogen wherein R.sup.1 X is either a C.sub.10 -C.sub.24 alkyl or a C.sub.9 -C.sub.24 alkaryl group, X is O, S or N, (ii) a polymeric block derived from at least one alkylene oxide of formula C.sub.x H.sub.x2 O wherein x is either 3 or 4, and (iii) a polymeric block derived from at least one alkylene oxide of formula C.sub.y H.sub.2y O wherein y is an integer in the range from 12 to 16, and wherein q is 1 when X is O or S, and q is 2 when X is N; and m and n are such that the molecular weight is in the range from 600 to 4000; and the (C.sub.y H.sub.2y O) polymeric block derived from the alkylene oxide of formula C.sub.y H.sub.2y O forms from 1 to 40% by weight of the copolymer, and the polymeric block derived from the alkylene oxide of formula C.sub.y H.sub.

Abstract: The composition of the present invention is excellent in compatibility, transparency and curability and give a cured coat of excellent gloss and of less smell, and cured products of excellent properties can be obtained by curing the composition.The present invention relates to an onium salt represented by the following formula (1): ##STR1## wherein Ar is a mono- to tetra-valent aromatic group, X is a bisphenylsulfonio group which may have a substituent, a is 1-4, b is 0 or 1-3, a+b is 1-4, n is 1-4, and Z is a halide represented by the following formula (3): ##STR2## where M is a boron atom, a phosphorus atom, an arsenic atom or an antimony atom, Q is a halogen atom, m is 3-6, l is 0 or 1, and m+l is 4-6; a photopolymerization initiator containing the onium salt as an active ingredient; an energy ray-curable composition containing the initiator; and a cured product.

Abstract: Compounds of the formula I ##STR1## in which R.sub.1 and R.sub.2 independently of one another are C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.8 cycloalkyl which is unsubstituted or substituted by C.sub.1 -C.sub.4 alkyl, or phenyl or benzyl which is unsubstituted or substituted by F, Cl, Br, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy or di(C.sub.1 -C.sub.6 alkyl)amino.The compounds are suitable as .pi.-acceptors and electrical semiconductors, and they can be used for antistatic finishing of objects.

Abstract: Abstract of the Disclosure: Diphenylheteroalkyl derivatives of the formula I ##STR1## where A and R.sup.1 -R.sup.6 have the meanings specified in the description, and the preparation thereof are described.The substances are suitable for controlling diseases and as cosmetic agents.

Abstract: A method and composition for decreasing the viscosity of mercaptan terminated polymers. The method involves adding thiol terminated trithio-orthoformate polycondensates to the mercaptan terminated polymer to achieve desired decreases in viscosities without adversely affecting other physical properties. The polycondensates have the formula(HS--R--S--).sub.2 CH--S--R'--S[--CH(--S--R"--S).sub.2 --].sub.n (H).sub.xwherein R, R', and R" are alkylene, arylene, alkylene thioether, or alkylene ether, either the same or different; n is 0-10; and x is n+1.

Abstract: This invention describes various compositions obtained from thiodiglycol or thiodiglycol polymers. The compositions have unique antioxidant capability and are useful in a variety of functional fluids, hydraulic fluids, automatic transmission fluids and generally in oils of lubricating viscosity such as crankcase oils or greases.

Abstract: The present invention relates to a mercapto compound, a process for preparing the mercapto compound, a process for preparing a polythiourethane base resin containing the mercapto compound, and a process for preparing plastic lenses containing the resin.

Abstract: A process for preparing a dihydroxy bis-sulfide is disclosed, wherein a thiolate salt, a dihaloalkane, an ether solvent that is partially soluble in water and is substantially nonreactive with either said thiolate salt or said dehaloalkane; and water are contacted under reaction conditions sufficient to synthesize a dihydroxy bis-sulfide; to subsequently recover a dihydroxy bis-sulfide.

Abstract: Heteroatom containing perfluoroalkyl terminated neopentyl mercapto-alcohols of the formulas I and IIHS--[CH.sub.2 C(CH.sub.2 X--E--R.sub.f).sub.2 CH.sub.2 ]--OH (I)HS--[CH.sub.2 C(CH.sub.2 X.sub.1 --R.sub.f).sub.2 CH.sub.2 ]--OH (II)are prepared from the corresponding perfluorinated neopentyl oxetans where R.sub.f is a straight or branched chain perfluoroalkyl of 1 to 18 carbon atoms or said perfluoroalkyl substituted by perfluoroalkoxy of 2 to 6 carbon atoms, E is a linking group, and X and X.sub.1 are heteroatom moieties.The reaction products of these fluorinated mercapto-alcohols with electrophiles are disclosed as are certain functional derivatives. Compositions containing such materials provide improved thermal stability and useful low surface energy oil and water repellent coatings for textiles, glass, paper, leather, and other materials.

Abstract: Herbicides of formula: ##STR1## in which: n=0,1, 2f=0,1A is chosen from the groups ##STR2## in which: Ar is chosen from the groups ##STR3## B is chosen from optionally substituted C.sub.1 -C.sub.10 alkyl and C.sub.3 -C.sub.

Abstract: The present invention relates to a mercapto compound, a process for preparing the mercapto compound, a process for preparing a polythiourethane base resin containing the mercapto compound, and a process for preparing plastic lenses containing the resin.

Abstract: A compound of the formula ##STR1## wherein X has the formula --CR.sup.5 .dbd.CR.sup.6 --, --C.tbd.C-- or ##STR2## wherein ring A is phenyl, naphthyl or heterocyclic; wherein R.sup.1 is hydrogen, alkyl, alkanoyl or aroyl;wherein R.sup.2, R.sup.3 and R.sup.4, which may be the same or different, each is an electron withdrawing substituent or each is hydrogen or alkyl, alkoxy or dialkylamino, provided that when ring A is phenyl or naphthyl at least one of R.sup.2, R.sup.3 and R.sup.4 is an electron-withdrawing substituent;wherein R.sup.5 and R.sup.6, each is hydrogen, halogeno or alkylwherein R.sup.7 is alkyl or halogenoalkyl; and wherein R.sup.8 has the formula --Y--Q--R.sup.9 wherein Y is straight- or branched-chain alkylene or alkenylene; wherein Q is --O--, --S--, --SO-- or --SO.sub.2 --;and wherein R.sup.9 is alkyl of up to 6 carbon atoms which contains one or more defined substituents, processes for their manufacture and pharmaceutical compositions containing them.

Abstract: Tris-perfluoroalkyl terminated neopentyl alcohols of the formula (R.sub.f --E.sub.n --X--CH.sub.2).sub.3 CCH.sub.2 OH prepared from halogenated neopentyl alcohols and thiols of the formula R.sub.f --E.sub.n --SH, amines of the formula R.sub.f --E.sub.n --NH--R, alcohols of the formula R.sub.f --E.sub.n --OH, perfluoro-acids or amides, are described. The alcohols react with isocyanates to prepare urethanes; with acids or derivatives, to prepare esters or carbonates; with epoxides to form ethers. Further, they may be converted to halide intermediates. The products all contain the residue of at least one R.sub.f -neopentyl alcohol containing three perfluoroalkyl hetero groups.

Abstract: Organic sulfide antioxidants useful for stabilizing polyolefins against oxidative and thermal degradation during processing and use represented by Formula I: ##STR1## wherein n is an integer of 2 to 15;R is a substituted or unsubstituted alkyl group of 2 to 30 carbons, a substituted or unsubstituted cycloalkyl group of 5 to 20 carbons a substituted or unsubstituted alkyl group of 2 to 30 carbons where any of up to 6 carbon atoms are replaced with an O or S heteroatom, a substituted or unsubstituted cycloalkyl group of 5 to 20 carbons where any of up to 6 carbon atoms are replaced with an O or S heteroatom, with the proviso that the heteroatoms must be separated from each other and from the portion of the compound to which the R group is bonded by at least one carbon atom, the substituents for R being --OH, --SR.sup.4 or -- OR.sup.4, wherein R.sup.4 is an alkyl group of 1 to 30 carbons or a cycloalkyl group of 5 to 20 carbons;R.sup.1 and R.sup.2 are independently H or an alkyl group of 1 to 4 carbons; andR.

Abstract: Novel compositions are described which comprise an elastomer or a lubricant and at least one compound of the formulae I or II ##STR1## The symbols R.sub.1, R.sub.2, R.sub.3, Z.sub.1 and Z.sub.2 are as defined in claim 1.The compounds of the formula II and some of the compounds of the formula I are novel, and they are used especially as antioxidants.

Abstract: Oxa-organic sulfur compounds, methods of preparing such compounds and methods of using the compounds as polymer chain length terminating agents are provided. The compounds are prepared by reacting allyl alcohol in the presence of a basic catalyst with a compound having the formula ##STR1## to form an intermediate.

Abstract: Cosmetic compositions for cleaning hair, the skin or for removing make-up from the face or from the eyes, containing (a) a foaming surface-active agent, (b) an aqueous, hydroalcoholic or oily carrier and (c) a nonfoaming, nonionic product, poorly soluble in water, of general formula (I):R--O--[C.sub.2 H.sub.3 --CH.sub.2 R.sub.1 --O].sub.p [C.sub.2 H.sub.3 O--CH.sub.2 OH].sub.n H (I)in which R denotes a C.sub.8 -C.sub.20 alkyl radical, R.sub.1 denotes a C.sub.7 -C.sub.17 alkyl radical or an alkoxy radical containing from 8 to 20 carbon atoms, R+R.sub.1 containing from 21 to 31 carbon atoms and preferably from 23 to 27, p denotes the exact value of 1 or a statistical mean value of between 1 and 2, and n denotes a statistical mean value of between 2 and 10 and preferably between 2.5 and 7.The presence of the component (c) improves the compatibility of the foaming surface-active agents (a) with the skin and the mucosa.

Abstract: Polyfunctional hexasubstituted benzene derivatives wherein at least three of the substituents are saturated carbon chains having from 1 to 21 carbon atoms and functional groups containing hetero functionalities at the ends of the carbon chains and the remainder of the 6 substituents are either saturated carbon chains containing from 1 to 21 carbon atoms or saturated carbon chains containing from 1 to 21 carbon atoms having a functional group including a hetero functional group containing N, O, S, P, or Si at the end of the chains. These derivatives are made by reacting a disubstituted alkyne wherein one or both of the substituents are saturated carbon chains having 1 to 21 carbon atoms to which hetero functional groups are attached with a palladium catalyst and isolating the resulting hexasubstituted benzene derivative.

Abstract: A novel hair waving agent comprises as its main ingredient a thioglyceryl alkyl ether or 1-phenyl-2-mercaptoethanol. The agent has low irritativeness and the good capability of wave formation.

Abstract: A novel hair waving agent comprises as its main ingredient a thioglyceryl alkyl ether or 1-phenyl-2-mercaptoethanol. The agent has low irritativeness and the good capability of wave formation.

Abstract: The present invention deals with compositions containing sulfur and oxygen which are useful in lubricants and automatic transmission fluids.

Abstract: Oxa-organic sulfur compounds, methods of preparing such compounds and methods of using the compounds as polymer chain length terminating agents are provided. The compounds are preparated by reacting allyl alcohol in the presence of a basic catalyst with a compound having the formula ##STR1## to form an intermediate.

Abstract: Compounds suitable for being used as lubricants, having general formula:(I) RO--(C.sub.3 F.sub.6 O).sub.m --(CFXO).sub.n --CFX--L, or(II) R"CFXO--(C.sub.3 F.sub.6 O).sub.x (CFXO).sub.y --(C.sub.2 F.sub.4 O).sub.z --CFX--L, whereR=--CF.sub.3, --C.sub.2 F.sub.5, --C.sub.3 F.sub.7X=F, --CF.sub.3R"=F, --CF.sub.3, --C.sub.2 F.sub.5m=an integer from 3 to 100n=a finite integer, or =zero, wherefore m+n ranges from 3 to 100, provided that, if n is finite, m/n ranges from 5 to 20 and R is preferably =CF.sub.3, if n=zero, R is preferably --C.sub.2 F.sub.5 or --C.sub.3 F.sub.7x=a finite integer, or =zeroy, z=finite integers, such that x+y+z ranges from 5 to 200, while (x+z)/y ranges from 5 to 0.5, provided that when x=zero, z/y ranges from 1 to 0.5 and y+z ranges from 5 to 200 n while X is preferably F, and R"=LL=group Y-Z, where:Y=--CH.sub.2 O--, --CH.sub.2 --OCH.sub.2, --CF.sub.2, --CF.sub.

Abstract: Sulfur-substituted alkenyl compounds, synthesis thereof, intermediates therefor, and the use of the compounds to control pests.

Abstract: There is disclosed a process for the preparation of compounds of formula I or II ##STR1## from phenols by reaction with formaldehyde and mercaptans in the presence of mono-, di- or trimethylamine or mono- or diethylamine.The symbols R.sub.1 is alkyl, hydroxy or alkoxycarbonyl substituted alkyl; alkyl; aryl, cycloalkyl or aralkyl, R.sub.2 is hydrogen, alkyl, alkenyl or halogen, R.sub.3 and R.sub.4 are independently alkyl, allyl, cycloalkyl, phenyl, benzyl, halogen or --CH.sub.2 --S--R.sub.1, Z.sub.1 is --S-- or alkylene, and Z.sub.2 is hydrogen, alkyl or --CH.sub.2 --S--R.sub.1.The mercaptomethylphenols are valuable antioxidants for plastics, elastomers, mineral oils and synthetic lubricants.

Abstract: The invention relates to non ionic fluorinated compounds having the formula R.sub.F C hd 2H.sub.4 S(R)H, wherein R designates a C.sub.2 H.sub.4 X unit with X=O or S, or a chain exclusively comprising several such units, and two consecutive units can be identical or different, and R.sub.F is a perfluorinated alkyl group exclusive of compounds having the formula:R.sub.F C.sub.2 H.sub.4 SC.sub.2 H.sub.4 OH, R.sub.F C.sub.2 H.sub.4 S(C.sub.2 H.sub.4 O).sub.2 H and R.sub.F (C.sub.2 H.sub.4 S).sub.2 Hand the mixtures of such compounds, in particular, the mixtures of the above defined products differing from one another by the length of their perfluorinated chain, but having the hydrophilic portion of the molecule identical from one product to the other.To obtain them, a compound having the formula R.sub.F C.sub.2 H.sub.

Abstract: Novel compositions are described which contain an elastomer or a tackifying resin and at least one compound of formula I ##STR1## The symbols R.sub.1 is alkyl or cycloalkyl, R.sub.2 is alkyl, hydroxyalkyl, phenyl or benzyl, and R.sub.3 is hydrogen or methyl with the proviso that, when R.sub.1 is other than methyl, R.sub.3 is methyl.

Abstract: 1. Compounds of the formula I ##STR1## in which n is a number from 1 to 100, Y is --N(R.sup.3)--, --S-- or --S--R.sup.4 --S--, R.sup.1 is C.sub.2 -C.sub.8 -alkylene, which can be interrupted by 1 to 3 ether oxygen atoms, R.sup.2 is hydrogen, unsubstituted or hydroxyl-monosubstituted to -pentasubstituted C.sub.1 -C.sub.8 -alkyl, which can be interrupted one or more times by --O--, --S-- or --N(R.sup.5)-- as long as R.sup.2 is not unsubstituted C.sub.1 -C.sub.8 -alkyl when Y is --S-- and n is 1, R.sup.3 is hydrogen unsubstituted or hydroxylmonosubstituted to -pentasubstituted C.sub.1 -C.sub.8 -alkyl, which can be interrupted one or more times by --O--, --N(R.sup.5)-- or --S--, R.sup.4 is unsubstituted or OH-monosubstituted or -polysubstituted C.sub.2 -C.sub.8 -alkylene, which can be interrupted one or more times by --O-- or --S--, are very highly suitable for use as high pressure and antiwear additives for polar functional fluids.

Abstract: This invention pertains to a new method for killing and controlling worms (Helminths), new formulations for killing and controlling worms in animals, new chemical compounds, and a new synthesis of northern hemisphere intermediates for the synthesis of milbemycin and avermectin macrolides.

Abstract: Strong acids, e.g., aluminosilicates and sulfonic acids are employed as catalysts for the (alkyl or aryl)thiolation of phenols using dialkyl or diaryl disulfides and/or (alkyl- or arylthio)phenols as thiolating agents, and for the isomerization of (alkyl- or arylthio)phenols, to prepare ortho(alkyl- or arylthio)phenols as the predominant products.

Abstract: Perfluorinated surface-active block or random oligomers of the formula ##STR1## where R denotes a C.sub.2 -C.sub.18 -hydrocarbon or-hydrofluorocarbon radical,Y denotes a C.sub.6 -C.sub.13 -fluorocarbon or-hydrofluorocarbon radical which can contain a chain oxygen atom,Z denotes a group which confers solubility in water and p and q denote integers or decimal numbers from 0.5 to 30 are provided.They are suitable for use in cosmetic compositions for the treatment of hair. They slow down the flow of sebum and the rate at which hair becomes greasy again.

Abstract: The present invention deals with compositions containing sulfur and oxygen which are useful in lubricants and automatic transmission fluids.

Abstract: Substituted diphenyl ethers of the formula ##STR1## where Z.sub.1, Z.sub.2 and Z.sub.3 are hydrogen, halogen, nitro, cyano, carboxyl, alkyl, haloalkyl, alkoxy, haloalkoxy, alkylmercapto, haloalkylmercapto, alkylsulfinyl, haloalkylsulfinyl, alkylsulfonyl or haloalkylsulfonyl, Z.sub.4 is hydrogen, cyano, alkyl, alkoxy, acetoxy or alkylmercapto, Y is hydrogen, halogen, cyano or nitro, X is oxygen, sulfur, sulfinyl or sulfonyl, and A is hydrogen, unsubstituted or substituted alkyl ##STR2## and can also be sulfonyl ##STR3## when X is oxygen, and, when Z.sub.4 is alkoxy or alkylmercapto, can also be a methylene chain --(CH.sub.2).sub.m -- by which the radicals Z.sub.4 --CH--X-- are bonded to form a ring, R.sub.1 is hydrogen, methyl, ethyl or n-propyl, R.sub.2 is cyano, methoxy, ethoxy or ##STR4## where B is OH, ONa, O--alkyl, unsubstituted or substituted phenoxy, --NH.sub.2, --NH--alkyl or --N(alkyl).sub.2, n is 1, 2 or 3, R.sub.3 and R.sub.