A sensitizer for use in electrophotography comprising a bisbenzopyran or bisbenzopyrylium adduct of a member selected from the group consisting of bisbenzopyrylium salts represented by the general formula I: ##EQU1## wherein R.sub.1 represents hydrogen, iso- or normal-alkyl radical having 1 to 10 carbon atoms or the phenyl radical; R.sub.2 represents phenyl, naphthyl styryl or any of these radicals having 1 to 3 substituents selected from methyl radical, alkoxy containing 1 to 4 carbon atoms suc...

7-Acylamino-2-(substituted ethyl)-3-(substituted alkyl)-3-cephem-4-carboxylic acids and esters are prepared via carbanion addition to 2-methylene-3-cephem sulfoxides to provide antibiotic cephalosporin Michael adducts.

The disclosed compounds are adducts of imidazole or derivatives thereof and sulfur dioxide. The adducts are apparently of the Lewis acid-Lewis base type, and are useful as latent curing agents for epoxide resins. The adducts are prepared by interacting the imidazole and sulfur dioxide under anhydrous conditions. Equimolar imidazole-SO.sub.2 adducts can serve as a source of sulfur dioxide at room temperature.

A novel reagent useful for preparing adducts of diene so that the diene may be assayed by gas liquid chromatography utilizing an electron capture detection system.

Adducts of tetrasubstituted pyrophosphato titanates and/or amines, having the formula are useful in improving the physical and chemical properties of many filled resins.

The invention provides novel humic acid derivatives obtained by reacting humic acid-containing materials with a noval amide mixture comprising a polyamide and an amido-amine containing one free amino group per molecule. The novel amide mixture is obtained by reacting under amidation conditions a fatty acid containing 16 to 30 carbon atoms with an amine mixture comprising aminoethylethanolamine (AEEA) and one or more polyethylenepolyamines (PEPA) containing 3 or more amino groups per molecule, wh...

Described is a genus of norbornylbutadiene-acrolein adducts defined according to the structure: ##STR1## wherein one of X.sub.1 or X.sub.2 represents carboxaldehyde and the other of X.sub.1 or X.sub.2 represents hydrogen; wherein R.sub.1 and R.sub.2 taken together represent vinyl or ethylidene and R.sub.3 represents hydrogen or R.sub.2 and R.sub.3 taken together completes a cyclopenteno moiety and R.sub.1 represents hydrogen and uses thereof in augmenting or enhancing the aroma of consumable mat...

Microbial polysaccharides can be quantitatively precipitated from their aqueous solutions, in particular directly from the fermentation solutions, in an acidic medium in the form of an adduct with a tertiary amine which has a long-chain alkyl radical. It is advantageous to add the amine to the polysaccharide solution and then to carry out the precipitation, in particular by adding the dispersion obtained to an acidic coagulation bath. The adducts are suitable for use as thickeners and for prepar...

Control of parasitic worm (helminth) infestations in warm-blooded animals including poultry, swine, cattle, sheep and goats by administering substituted quinoxaline adducts to infested animals. In particular, certain adducts of quinoxaline-1,4-dioxides are capable of eliminating infestations of the pinworms Syphacia obvelata and Aspicularis tetraptera in mannals. Several of the compounds are also effective against the tapeworm Hymenolepsis nana in mammals.

Novel thioether isocyanates and isothiocyanates can be produced by the addition of thiols to the olefinic bonds of allyl isocyanates and isothiocyanates. They are useful as pesticides, especially as post-emergence herbicides, and as polymer intermediates.