Abstract: 2-((4-Pyridinyl-2-oxy)phenoxy)propanoic acids, amides, salts and esters thereof, and nitriles derived therefrom and 2-((4-pyridinyl-2-oxy)phenoxy) propanols and esters and ethers thereof, and the corresponding 2-((4-pyridinyl-2-thio)phenoxy) propanoate and propanol compounds, all having trifluoromethyl substitution in at least one of the 3- and the 5-position in the pyridine ring with or without additional substitution at the converse position in the pyridine ring according to the following formula, are useful as herbicidal agents: ##STR1## where the various substituents are defined herein below.

Abstract: An imidazoline modified styrene-acrylonitrile polymer composition which is substantially insoluble in aqueous media at about pH 6 or more but swellable or soluble at pH 3 or less is employed as a coating for nutrient or therapeutic substances for administration to ruminants. The substances thus are rendered resistant to attack and breakdown in the rumen yet remain susceptible to release and digestion within the abomasum or small intestine of the animal.

Abstract: A portable apparatus for reducing the dimensions of a workpiece by abrading means. The apparatus comprises in combination: a portable electric drill motor having a tool shaft-receiving chuck; a workpiece abrading means operatively connected with a shaft adapted to be engaged by the chuck; a guide member supporting the drill motor; a base member adapted to receive and support (1) the guide member adjacent one end, and (2) a housing generally surrounding the abrading means adjacent the other end; the base member having retentive parallel positioning rails extending longitudinally along each lateral edge of a face of the base member; the guide member being slidable longitudinally of the base member whereby the drill motor is adjustably advanceable toward the end of the base member to allow the tool to be aligned with the housing or guard.

Abstract: A portable apparatus for reducing the dimensions of a workpiece using rotatable work means. The apparatus comprises in combination: a portable electric drill motor having a shaft-receiving chuck; a work means rotatable about its longitudinal axis and supported by the chuck and a journalled support member; a guide member supporting the drill motor; a base member adapted to receive and support (1) the guide member adjacent one end, (2) the journalled support member adjacent the other end, and (3) a working element support between the guide member and the journalled support member; the base member having retentive parallel positioning rails extending longitudinally along each lateral edge of a face of the base member; the guide member being slidable longitudinally of the base member whereby the drill motor is adjustably positionabletoward the journalled support member to allow the working means to be rotatably supported.

Abstract: The present invention is directed to new substituted 1,3-dioxepin compounds corresponding to the formula: ##SPC1##Wherein R is a lower alkyl group of from 1 to about 8, both inclusive, carbon atoms or an aryl group of from 6 to about 8 carbon atoms inclusive. R' is hydrogen or an alkyl group of from 1 to about 8, both inclusive, carbon atoms, and n is an integer of from 0 to about 8. The present invention is further directed to a novel process for the preparation of such substituted 1,3-dioxepin compounds wherein n is 0 by reacting, at room temperatures, a corresponding trialkyl orthoalkanoate with cis-2-butene-1,4-diol in the presence of a non-oxidizing acid catalyst. The compounds of the present invention are suitable for use as herbicides.