Abstract: Novel beta-lactam compounds of the formula ##STR1## and process for their preparation in which a penicillin ester is reacted with a source of positive halogen to selectively open the thiazolidine nucleus of the penicillin.

Abstract: An improved electroconductive resin composition is obtained by using a water-dispersible, film-forming acrylamide polymer as a binder and extender for a water-soluble quaternary ammonium electroconductive resin. Particularly useful is a self-binding blend of about 65-95 wt. % polyvinylbenzyltrimethylammonium chloride and about 5-35 wt. % nonhydrolyzed polyacrylamide which can be formulated as an aqueous dispersion with clay or other printing pigments. Applied to a nonmetallic substrate, such as paper or an organic polymer film, the improved electroconductive resin composition reduces the surface electrical resistivity of the substrate and also provides improved holdout to aromatic and aliphatic solvents.

Abstract: Free flowing particulate pentachlorophenol having little or no tendency to bloom is obtained by incorporating about 0.5-10 percent by weight of benzyl alcohol. Prills made from molten pentachlorophenol containing the benzyl alcohol are a preferred form.

Abstract: The well-known heat transfer fluid consisting essentially of the eutectic mixture of diphenyl oxide and biphenyl is improved by the addition thereto of monomethyl- or monoethylbiphenyl. The resulting fluids have very nearly the same boiling point and heat stability as the binary eutectic but have substantially lower freezing points.