Abstract: Process for curing a thermoset resin comprising the step of contacting said resin with (i) an imine of the structure C(R2)(R3)?N—R1 wherein R1 is selected from hydrogen, hydroxyl, linear or branched alkyl having 1-22 carbon atoms, cycloalkyl having 3-22 carbon atoms, aryl having 6 to 15 carbon atoms, and aralkyl having 7 to 22 carbon atoms, which alkyl, cycloalkyl, aryl, and aralkyl groups may be optionally substituted with one or more groups containing heteroatoms selected from S, O, P, and/or Si. R2 is selected from C(R6)(R5)—C(?O)—R4, —C(R6)(R5)—C(?S)—R4, and —C(R6)(R5)—C(?N)—R4, wherein R4, R5, and R6 are selected from hydrogen, linear or branched alkyl having 1-6 carbon atoms, cycloalkyl having 3-12 carbon atoms, aryl, aralkyl, alkoxy having 1-6 carbon atoms, and aryloxy. R3 is selected from linear or branched alkyl having 1-22 carbon atoms, 1 cycloalkyl having 3-22 carbon atoms, aryl having 6 to 15 carbon atoms, and aralkyl having 7 to 22 carbon atoms, and (ii) methyl isopropyl ketone peroxide.

Abstract: Multi-pack curable composition comprising: a first pack comprising a blend of (i) an epoxy resin, (ii) an unsaturated polyester or vinyl ester resin, and optionally (iii) a peroxyester, a second pack comprising an amine curing agent for the epoxy resin and at least one transition metal compound selected from iron, copper, and manganese compounds, and at least when the first pack does not contain a peroxyester, a third pack comprising a peroxide.

Abstract: Substituted benzylidene 2,4-pentanediones are found to provide stabilization to otherwise photosensitive compounds and compositions.

Abstract: Novel cosmetic or dermatological compositions comprising multiply coated titanium dioxide particles with a water content of less than 1.5% are provided. More particularly novel cosmetic or dermatological compositions comprising multiply coated titanium dioxide particles with a water content of less than 1.5% and a dibenzoyl methane derivative are provided.

Abstract: The invention provides compositions and methods for enhancing the photostability of avobenzone in compositions for topical administration, including, e.g., sunscreen compositions, by addition of methyl anthranilate in an amount effective to stabilize avobenzone against photodegradation particularly where the composition is substantially free of other non-sunscreen agents that photostabilize avobenzone.

Abstract: Benzylidene substituted 2,4-pentanedione compounds without having phenolic hydroxyl group(s) are found to provide photostability to otherwise photosensitive compounds and compositions.

Abstract: A process for stabilizing cyclobutanone derivatives, comprising adding at least one of an alkali metal carbonate, alkali metal oxide, alkaline earth metal carbonate, and alkaline earth metal oxide as a stabilizer to at least one cyclobutanone derivative of the structure where R1, R2, R3, R4, R5 and R6 are each independently hydrogen or an alkyl, aralkyl, cycloalkyl, aryl, alkylaryl, hydroxyl, alkoxy, halogen, cyano or carboxyl group; and the correspondingly stabilized cyclobutanone derivatives.

Abstract: A process for preparing bicyclic 1,3-diketones of the formula I where R1, R2, R3 and R4 are hydrogen, C1-C4-alkyl, C1-C4-alkoxy-carbonyl, halogen, cyano, nitro, C1-C4-alkylthio, C1-C4-alkylsulfenyl or C1-C4-alkylsulfonyl and Z is C1-C4-alkylene, O, S, N—R5 where R5 is C1-C4-alkyl or C1-C4-alkylcarbonyl, which comprises a) reacting a bicyclic olefin of the formula II with haloform in the presence of a base to give the ring-expanded product of the formula III  where R1-R4 and Z are as defined above and X is halogen; b) hydrolyzing the allylic halogen of the compound of the formula III to the allyl alcohol of the formula IV c) oxidizing the allyl alcohol of the formula IV to the unsaturated ketone of the formula V d) reacting the ketone of the formula V with a nucleophilic ion Y− which stabilizes a negative charge to give the ketone of the formula VI e) hydrolyzing the ketone of the formula VI to th

Abstract: Acids having a pKa of less than about 4 may be used to stabilize certain perfluoroalkyl alkyl ketones, particularly a substantially pure perfluoroalkyl alkyl ketone, a substantially pure aqueous solution of a perfluoroalkyl alkyl ketone or a substantially pure hydrate of a perfluoroalkyl alkyl ketone.

Abstract: Methyl propyl ketone peroxide formulations are claimed that can be safely handled at ambient temperature, are storage stable, and give fast curing rates of unsaturated polyester resins particularly when accelerated with a complex of two different metals. The claimed products are particularly suited for thin articles and coating such as suited for use in gel coat systems. The pure ketone peroxides consist of more than 60% by weight of type-4 methyl propyl ketone peroxide and used as formulations containing sufficient amount of a non-aqueous phlegmatizer.

Abstract: Process for producing an optically active ester by reaction of a racemic alcohol with an optically active amino or tartaric acid derivative, a process for producing an optically active alcohol by hydrolysis of the optically active ester, a process for converting an alcohol into a ketone by oxidation, a method for stably storing an optically active ketone, and a new optically active amino acid ester and a new optically active tartaric acid ester.

Abstract: Disclosed is a method for the stabilization of cyclobutanone compounds with a phenolic stabilizer compound and to stabilized compositions comprising a cyclobutanone compound and a phenolic stabilizer compound. The stabilization of cyclobutanone compounds with a phenolic stabilizer compound eliminates or minimizes the formation of a solid material when cyclobutanone compounds are stored and/or transported under ordinary shipping conditions.

Abstract: A method for increasing the shelf life of liquid hydroxy- and alkoxyalkyl ketones by adding from 0.0001 to 1% by weight of a base is described.

Abstract: Substituted aryl or heteroaryl in particular benzoyl bicycloalkanediones and related compounds, intermediates therefor, synthesis thereof, and the use of said diones for the control of weeds.

Abstract: Ethylenically unsaturated monomers are protected from premature polymerization during manufacture and storage by the incorporation therein of an effective stabilizing amount of a 7-substituted quinone methide compound.

Abstract: A photostable cosmetic filter composition for protecting human skin against UV radiation at wavelengths between 280 and 380 nm comprises, in a cosmetically acceptable support medium containing at least one oily phase, 1 to 3% by weight of a dibenzoylmethane derivative and at least 1% by weight of a substituted dialkylbenzalmalonate having formula I: ##STR1## R.sub.1 and R.sub.3 may be identical or different and represent H or a straight- or branched-chain C.sub.1 -C.sub.8 alkoxy radical.R.sub.2 and R.sub.4 represent a straight- or branched-chain C.sub.1 -C.sub.8 alkyl radical.The molar ratio of compound (I) to the dibenzoylmethane derivative is greater than or equal to 0.6.

Abstract: The invention relates to a photostable screening cosmetic composition for protecting human skin against UV rays, comprising, in a cosmetically acceptable substrate containing at least one fatty phase, 1 to 3% by weight of 4-(1,1-dimethylethyl)-4'-methoxydibenzoylmethane and at least 4.5% by weight of p-methylbenzylidenecamphor, the weight ratio of p-methylbenzylidenecamphor to 4-(1,1-dimethyl-ethyl)-4'-methoxydibenzoylmethane being higher than or equal to 3.It also relates to a process for protecting the skin against UV radiation and to a process for stabilizing 4-(1,1-dimethylethyl)-4'-methoxydibenzoylmethane against UV radiation.

Abstract: A photostable cosmetic screening composition and process for protection of the human epidermis against UV rays of wavelengths between 280 and 380 nm, the composition having, in a cosmetically acceptable vehicle containing at least one fatty phase, 1 to 5% by weight of a dibenzoylmethane derivative and at least 1% by weight of an alkyl .beta.-.beta.-diphenylacrylate or .alpha.-cyano-.beta.-.beta.-diphenylacrylate of formula (I), the mole ratio of the compound of formula (I) to the dibenzoylmethane derivative being not less than 0.8.

Abstract: A photostable cosmetic screening composition and process for protection of the human epidermis against UV rays of wavelengths between 280 and 380 nm, the composition having, in a cosmetically acceptable vehicle containing at least one fatty phase, 1 to 5% by weight of a dibenzoylmethane derivative and at least 1% by weight of an alkyl .beta.-.beta.-diphenylacrylate or .alpha.-cyano-.beta.-.beta.-diphenylacrylate of formula (I), the mole ratio of the compound of formula (I) to the dibenzoylmethane derivative being not less than 0.8.

Abstract: Described is the novel compound, bicyclo[10.2.0]tetradecan-13-one having the structure: ##STR1## as well as the use thereof in augmenting or enhancing the aroma of consumable materials including perfume compositions, colognes and perfumed articles (including solid or liquid anionic, cationic, nonionic or zwitterionic detergents, fabric softeners, cosmetic powders and hair preparations). Also described is a process for preparing said bicyclo[10.2.

Abstract: In accordance with the present invention, there are obtained stable isopropenyl acetophenone solutions containing (i) an organic carboxylic acid and/or (ii) a specific diluent and, if necessary, (iii) a radical polymerization inhibitor. Because of such composition as mentioned above, the present isopropenyl acetophenone solutions are quite useful and excellent in stability, especially long-term preservation performance, showing practically no polymerization of the isopropenyl acetophenone contained therein even when the solutions are preserved for an extended period of time under the circumstances of high temperature.

Abstract: Described herein is an aqueous solution comprising a dialdehyde of from 2 to 6 carbon atoms and an aliphatic ketone. This solution may be stored under conditions under which the aqueous dialdehyde solution would normally freeze.

Abstract: Fluorinated ketones, for example, 1,1,1-trifluoroacetone, can be stabilized against storage degradation by combining with a content of hexafluoroisopropanol (HFIP). Containers containing the stabilized mixture show prolonged storage times compared to containers containing the fluorinated ketones alone. The stabilized mixture can be used as a starting material for reactions requiring fluorinated ketones, for example, 1,1,1-trifluoroacetone, as a starting material.