Abstract: Userful as antimicrobial agents in aqeuous systems are .alpha.-halo.beta.-(substituted)thioacrylonitriles of the formula ##STR1## wherein X represents Cl, Br or I and R represents a lower alkyl, aryl, aralkyl, heterocyclo, or a thiocarbonyl group. The configuration about the double bond may be E or Z or a mixture thereof. These compounds provide effective control of microbial growth. The derivatives of formula I are economically prepared from acrylonitrile via a three-step process involving (a) halogenation, (b) dehydrohalogenation and (c) nucleophilic-type displacement. Except for those compounds wherein X is bromo and R is methyl or phenyl, the compounds of formula I are not mentioned in the prior art.

Abstract: This disclosure relates to a novel class of 2-alkyl-3-haloisothiazolium salts. These salts have been found to be useful in controlling the growth of bacteria and fungi. They have also been found to be useful intermediates in the preparation of novel and known antibacterial and antifungal compounds.

Abstract: This disclosure relates to a novel class of 2-alkyl-3-haloisothiazolium salts. These salts have been found to be useful in controlling the growth of bacteria and fungi. They have also been found to be useful intermediates in the preparation of novel and known antibacterial and antifungal compounds.

Abstract: This disclosure relates to a novel class of 2-alkyl-3-haloisothiazolium salts. These salts have been found to be useful in controlling the growth of bacteria and fungi. They have also been found to be useful intermediates in the preparation of novel and known antibacterial and antifungal compounds.

Abstract: This disclosure relates to a novel class of 2-alkyl-3-haloisothiazolium salts. These salts have been found to be useful in controlling the growth of bacteria and fungi. They have also been found to be useful intermediates in the preparation of novel and known antibacterial and antifungal compounds.

Abstract: This disclosure relates to a novel class of 3-alkoxy-2-alkylisothiazolium salts. These salts have been found to be useful in controlling the growth of bacteria and fungi. They have also been found to be useful intermediates in the preparation of known antibacterial and antifungal compounds.

Abstract: There is disclosed methods and compositions for inhibiting or preventing the growth of microorganisms in aqueous systems wherein the growth is inhibited or prevented by the presence of an effective amount of a 2-chloro-3-oxobutyramide derivative.

Abstract: Novel iodopropargyl pyridyl and picolinyl ethers and thioethers are effective antifungal agents. They find special utility in paint for protecting finished paint films from fungal attack.

Abstract: Methods and compositions for inhibiting or preventing the growth of microorganisms in aqueous systems wherein the growth is inhibited or prevented by the presence of an effective amount of .alpha.-chloro-.beta.-aminocrotonamide.

Abstract: There is disclosed methods and compositions for inhibiting or preventing the growth of microorganisms in aqueous systems wherein the growth is inhibited or prevented by the presence of an effective amount of a 2-chloro-3-oxobutyramide derivative.

Abstract: Methods and compositions for inhibiting or preventing the growth of microorganisms in aqueous systems wherein the growth is inhibited or prevented by the presence of an effective amount of .alpha.-bromo-.beta.-aminocrotononitrile.

Abstract: Methods and compositions for inhibiting or preventing the growth of microorganisms in aqueous systems wherein the growth is inhibited or prevented by the presence of an effective amount of an .alpha.-halo-.beta.-aminocrotonic acid ester.

Abstract: Novel iodopropargyl pyridyl and picolinyl ethers and thioethers are effective antifungal agents. They find special utility in paint for protecting finished paint films from fungal attack.

Abstract: U.V. absorbing compositions containing substituted N,N'-bis-aromaticformamidines and the use thereof as sun-screening agents.

Abstract: Novel substituted formamidines are useful as ultraviolet light absorbers, the formamidines being characterized by the formula: ##STR1## wherein: R.sub.1 represents an alkyl group containing one to five carbon atoms;B is selected from the group consisting of H, OH, Cl or alkoxy;R.sub.2 represents a phenyl group or an alkyl group containing one to nine carbon atoms;A is selected from the group consisting of H, carboalkoxy, alkoxy, alkyl, dimethylamino and halogen.D is selected from the group consisting of H, methoxy and chlorine.

Abstract: The present invention relates to processes and compositions for inhibiting or preventing the growth of microorganisms in aqueous systems and formulations, by the addition thereto of dialkyl bromonitromalonates.