Abstract: Substituted propenoates are prepared by eliminating an alcohol from a substituted malondialdehyde acetal, optionally in the presence of a homogeneous or heterogeneous catalyst.

Abstract: A process directed to the preparation of acetals of malondialdehyde by reacting alkylvinyl ethers or esters with ortho formates in the gas phase with a heterogeneous catalyst.

Abstract: A process directed to the preparation of 2-substituted and 2,2-disubstituted acetals of malondialdehyde from ortho formates and substituted vinyl ethers in the presence of an acidic catalyst.

Abstract: Process for the preparation of malondialdehyde-derivatives by reacting vinylesters with orthoesters in the presence of a precious metal catalyst.

Abstract: An improved process for the commercial production of malononitrile by the dehydration of cyanoacetamide employs cyanuric chloride in the presence of a catalytic amount of N,N-dimethylformamide and in a polar solvent that is removed by vacuum distillation at a temperature below 100° C. The N,N-dimethylformamide is added in a molar ratio of 0.16 moles for each mole of cyanoacetamide present in the starting solution.

Abstract: C3-12 alkyl, substituted alkyl, alkenyl and cycloalkyl cyanoacetates are prepared by an efficient and simplified one-step process in which a small molar excess of the corresponding alcohol, i.e., C3-12 alkyl, substituted alkyl, alkenyl or cycloalkenyl alcohol is reacted with crystalline cyanoacetic acid, or a concentrated aqueous solution of cyanoacetic acid, in the presence of an acid catalyst, such as, for example, methanesulfonic acid, p-toluenesulfonic acid, sulfuric acid and phosphoric acid at a temperature in the range of from about 60° C. to about 150° C., in accordance with the following reaction: CNCH2COOH+R—OH→(cat)CNCH2COOR+H2O  (I) where R is a C3-12 alkyl, substituted alkyl, alkenyl or cycloalkyl.

Abstract: A color identification and selection display for use in connection with the retail sale of custom-tinted architectural coatings and paints is based on lightness values or levels and is assembled from a plurality of take-home cards in the form of elongated strips that are placed with their longer axis in horizontal rows, each strip containing a plurality of color fields arranged in stripes separated by narrow neutral bands. Adjacent color stripes in a given row are of closely related hues that preferably decrease in wave length when moving from left to right along any given horizontal row. Since each strip contains a plurality of closely related colors, only one, or perhaps two, take-home cards need be removed to assist in the final selection of the desired color. Each horizontal row includes a family of colors formulated from a single type of base, i.e., a tint base, a pastel base, a deep base or an accent base.

Abstract: The present invention relates to a general synthesis for producing secondaryalkoxy-1-alkenes in commercial quantities in good yields by reacting cyclic and acyclic ketones and the corresponding alcohol with a secondary alkyl orthoformate ester in the presence of an acid catalyst, a Lewis acid, ferric chloride being preferred, and recovering the produce as a liquid of high purity.

Abstract: Process for the preparation of heterocycles by reacting 2-substituted acetals of malondialdehyde with a reactant selected from hydroxylamines and their salts, hydrazines and their salts, formamid, amidines and their salts, guanidines and their salts, aminoguanidines and their salts, nitroguanidine and their salts, O-alkyl-isoureas and their salts, O-cycloalkyl-isoureas and their salts, O-aralkyl-isoureas and their salts, O-aryl-isoureas and their salts, S-alkyl-isothioureas, S-cycloalkyl-isothioureas, S-aralkyl-isothioureas, S-arylisothioureas, S-alkyl-isothiouronium salts, S-cycloalkyl-isothiouronium salts, S-aralkyl-isothiouronium salts, S-aryl-isothiuronium salts, thiourea and urea.

Abstract: The invention is directed to a biocidal composition for inhibiting fungal and algae growth which comprises a mixture of tetrachloroisophthalonitrile and N-cyclopropyl-N'(1,1 -dimethylethyl)-6-(methylthio)-1,3,5-triazine-2,4-dismine.

Abstract: The invention is directed to a biocidal composition for inhibition fungal, bacterial and algae growth which comprises a mixture of tetrachloroisophthalonitrile and 3-iodo-2-propynly butyl carbamate.

Abstract: An aqueous, non-settling, universal pearlescent, or nacreous pigment dispersion is provided for use in dispensing machines for the custom mixing in retail stores and trade sales of alkyd or solvent-thinned and water-based surface coatings. The non-settling pearlescent pigment dispersion employs a synthetic silicate, sodium lithium magnesium silicate, as the suspending agent. Also disclosed are methods for preparing the dispersion which incorporates one or more carriers, humectants, surfactants and other optional conventional additives.

Abstract: An improved rubber-modified asphalt paving binder is provided by incorporating a minor proportion of a polyoctenamer into the heated liquid asphalt cement. The binder can contain from about 80% to about 99% by weight of asphalt cement, from about 0.5% to about 20% by weight of crumb rubber, such as ground tire rubber ("GTR"), and from about 0.01% to about 10% by weight of the polyoctenamer. The polyoctenamer can be of the trans- or cis- form, such as that sold under the brand name VESTENAMER.RTM.. A paving concrete is provided by adding the improved asphalt binder, with mixing, to conventional aggregate materials, which materials can also contain additional crumb rubber.

Abstract: Alkyl, aralkyl or aryl cyanoformate esters having from one to 20 carbon atoms are prepared by anhydrously reacting stoichiometric amounts of the corresponding alkyl, aralkyl or aryl haloformate and an organosilyl nitrile in the presence of a catalytic amount of a tertiary amine base, preferably 1,4-diazabicyclo?2.2.2!octane, in the absence or presence of an inert solvent. The reaction is conducted at a temperature of from about -30.degree. C. to 70.degree. C., preferably at from about 5.degree. C. to 30.degree. C.