Abstract: An improvement in an on-site foam generating apparatus which includes storage tanks for supplying the foam-forming reactants, a mixing chamber, and means for conveying the reactants through the mixing chamber. The improvement comprises means for automatically cleaning and flushing the mixing chamber. When the foam gun head containing the mixing chamber is at rest and inverted in an opening on the top of a solvent storage tank, solvent is continuously recycled through the mixing chamber. When the foam gun head is removed from the tank, a proximity switch senses the absence of metal and actuates an electrical circuit to operate a solenoid valve to divert the solvent from the mix chamber to a by-pass back to the tank. Additionally, a time delay relay is actuated which operates a solenoid valve for a predetermined period to supply purging gas to and through the mixing chamber upon removal of the foam gun head from the tank.

Abstract: An additive composition which can be adapted into conventional automatic dishwasher detergents for reducing foam during use thereof, comprising:A. a nonionic surface active agent having the formula: ##STR1## wherein R is a substantially linear, alkyl radical having an average from about 6 to about 12 carbon atoms,R' is a linear, alkyl radical of 1 to about 4 carbon atoms,R" is a linear, alkyl radical of 1 to about 4 carbon atoms,x is an integer of 1 to about 6,y is an integer of about 4 to about 20, andz is an integer of about 4 to about 25, andB. an alkyl phosphate ester having an average of 16 to 28 carbon atoms in the alkyl radical; andWherein the weight ratio of (A):(B) is from about 1:1 to about 99:1.

Abstract: Novel alkoxysilane cluster compounds are described having the formula: ##STR1## wherein n is an integer from 0 to 300; R is hydrogen, alkyl, alkenyl, aryl, aralkyl or --OSi(OR').sub.3 ; each R' is independently selected from alkyl, alkenyl, aryl or aralkyl with the proviso that at least a majority of R' radicals are sterically hindered alkyl groups having at least 3 carbon atoms; and R" and R'" are independently selected from hydrogen, alkyl, alkenyl, aryl, aralkyl, hydroalkyl, and halo or cyano substituted alkyl, alkenyl, aryl, aralkyl, and hydroalkyl. The preparation and use of these alkoxysilane cluster compounds also are described.

Abstract: Process for making highly pure pentachloronitrobenzene (PCNB) by the nitration of pentachlorobenzene (PENTA).

Abstract: The present invention relates to a method for using selected 3-trichloromethyl-5-lower alkoxy-1,2,4-thiadiazole compounds as insecticides or acaricides.

Abstract: A solvent composition is disclosed which comprises a halogenated hydrocarbon and a monohydric alcohol. This composition is used to clean polyurethane foam generating equipment.

Abstract: An improved epoxy resin composition is disclosed which incorporates a select group of chlorine-containing polyols. The improved composition is used as an adhesive and in various other applications.

Abstract: Functional fluid systems, i.e., hydraulic fluid and heat transfer fluid systems, containing alkoxysilanol cluster compounds having the formula RSi[OSi(OR').sub.3 ].sub.2 OH wherein R is hydrogen, an alkyl, alkenyl, aryl or aralkyl group and each R' is independently selected from the same group as R with the proviso that at least a majority of R' radicals are sterically hindered alkyl groups having at least 3 carbon atoms, are described.

Abstract: Functional fluid systems, i.e. hydraulic fluid and heat transfer fluid systems, containing alkoxysilane cluster compounds having the formula RSi[OSi(OR').sub.3 ].sub.3 wherein R is hydrogen, an alkyl, alkenyl, aryl or aralkyl group and each R' is independently selected from the same group as R with the proviso that at least a majority of R' radicals are sterically hindered alkyl groups having at least 3 carbon atoms, are described.

Abstract: Selected amines are used as catalysts in the preparation of polyurethane foam.

Abstract: Use of hydroquinone as a scorch inhibitor in polyurethane foams containing halogenated phosphate polyester additives.

Abstract: An improvement in the process for making para-chlorobenzotrifluoride by the fluorination of a mixture of the para- and meta- isomers of chlorobenzotrichloride wherein the fluorination reaction is stopped before the complete conversion of the para- and meta- isomers occurs so that the relative amount of meta- isomer of chlorobenzotrifluoride produced will be reduced.

Abstract: Perfluoroalkyl substituted aromatic or heteroaromatic compounds are prepared by reacting a perfluoroalkyl bromide with an aromatic compound in the vapor phase in the presence of a catalytic amount of iodine or an iodine generating compound.

Abstract: Selected tetrafunctional methylene-bridged aromatic isocyanates and a method for their preparation are disclosed. The utility of these isocyanates as cross-linking agents for polyurethanes is also disclosed.

Abstract: A process for preparing anhydrous metal fluorides is described wherein metal is reacted with HF and halogen in the presence of a nitrile.

Abstract: A novel compound is described which is useful as a reversible oxygen carrier. This chelate compound is bis(3,5-difluorosalicylaldehyde)ethylenediimine-Co.sup.+.sup.2.

Abstract: Pentachloronitrobenzene having less than 0.6% hexachlorobenzene is prepared by reacting pentachlorobenzene with mixed nitration acid at a temperature in the range of 100.degree.-120.degree. C then heating the reaction mixture to an intermediate temperature to deplete excess nitric acid prior to melting and recrystallization.

Abstract: Corrosion inhibiting compositions are described which contain a hydrazine compound, an organometallic complex and a quinone compound. The organometallic complex is the reaction product of a cobaltous, manganous, or cupric inorganic salt and one or more aromatic ligands containing at least two hydroxy or two amino functional groups, or at least one amino and one hydroxy group, in the ortho position with respect to one another. The quinone compound is one which renders the composition compatible with chelating phosphonate scale control agents. The use of these compositions as oxygen scavengers in corrosive environments is also described.

Abstract: Hydrogen halide levels of halogenated aliphatic nitriles are unexpectedly reduced by condensing a vapor comprising hydrogen halide and halogenated aliphatic nitrile at selected elevated temperatures, thus producing a product having reduced hydrogen halide levels and improved storage stability.

Abstract: Superior drying is obtained for coating compositions containing drying or semi-drying oils by incorporating therein an effective amount of 5-methyl-1,10-phenanthroline.