Abstract: Essentially inorganic monolithic hollow fibers having a radially anisotropic internal void volume wall structure. Process for the production of such fibers. Apparatus and processes using such fibers.

Abstract: Certain N-thiolcarbonyl derivatives of N-phosphonomethylglycinonitrile esters are novel chemical compounds having desirable herbicidal properties.

Abstract: Tube sheets having a plurality of hollow fiber membranes suitable for fluid separations which are adapted to be provided in a fluid tight relationship within a permeator comprise a cured epoxy resin comprising polyglycidyl resin and imidazole curing agent. Methods are provided for making tube sheets.

Abstract: N-amides of 2-benzothiazolinone have been found to be effective in regulating the growth of leguminous plants.

Abstract: 2-Oxo-3-benzothiazoleethanimidamides have been found to be effective in regulating the growth of leguminous plants.

Abstract: Tube sheets having a plurality of hollow fiber membranes suitable for fluid separations which are adapted to be provided in a fluid tight relationship within a permeator comprise a cured, solidified resinous composition of a liquid resinous composition comprising polyglycidyl resin-containing resin, curing agent and particulate filler. Methods are provided for making tube sheets.

Abstract: This disclosure relates to N-nitroso-N-phosphonomethylglycine triesters and their use as herbicides and in herbicidal compositions. More particularly, this disclosure relates to N-nitroso-N-phosphonomethylglycine esters wherein a lower alkyl or benzyl group is bonded to the carboxyl moiety and a phenyl or substituted phenyl group is bonded to phosphorus.

Abstract: This disclosure relates to N-nitroso-N-phosphonomethylglycinonitrile compounds, the preparation thereof and their use as herbicides and in herbicidal compositions.

Abstract: The disclosure herein relates to a new process for the preparation of N-(halomethyl)acylamides by reacting the corresponding N-(alkoxymethyl)acylamide with thionyl chloride or thionyl bromide in the presence of a Lewis Acid catalyst.

Abstract: Derivatives of 2-imino-1,3-dithiolane, 1,3-dithiole, 1,3-dithiane, 1,3-dithietane and 1,3-oxathiole have been found to reduce herbicidal injury to crop plants due to thiocarbamate and acetanilide herbicides.

Abstract: The performance of axially-fed permeators containing a plurality of selectively permeable hollow fibers suitable for the selective permeation of at least one fluid in a fluid mixture containing at least one other component, wherein the hollow fibers are positioned in the permeator to form an elongated bundle of hollow fibers, is enhanced by the use of means to longitudinally compact the bundle.

Abstract: The disclosure herein relates to a new process for the preparation of N-(halomethyl) acylamides by reacting the corresponding N-(alkoxymethyl) acetamide with a hydrogen halide.

Abstract: 2-Imino-4-dichloromethylene-1,3-dithiolane and its derivatives may be prepared by cyclizing, via photolysis, an appropriate 2,3,3-trihaloalkyl N-substituted dithiocarbamate in the presence of a suitable solvent, as for example, carbon tetrachloride. The 1,3-dithiolane derivatives are useful as herbicidal antidotes.

Abstract: Methods for inserting a bundle of hollow fiber membranes into a permeator shell are provided which methods present minimal risk of damage to the hollow fiber membranes and enable high packing factors of hollow fiber membranes within the permeator shell to be achieved. In the methods, a bundle of hollow fiber membranes is surrounded by a substantially fluid impermeable, flexible envelope. The interior of the envelope is provided at a lower total pressure than the pressure at the exterior of the envelope such that the flexible envelope is drawn into contact with the bundle and laterally compacts the bundle. The envelope containing the bundle is inserted into a permeator shell while maintaining the pressure differential. The flexible envelope may be retained within or may be withdrawn from the permeator shell.

Abstract: Derivatives of 2-imino-1,3-dithiolane, 1,3-dithiole, 1,3-dithiane, 1,3-dithietane and 1,3-oxathiole have been found to reduce herbicidal injury to crop plants due to thiocarbamate and acetanilide herbicides. This is a division, of application Ser. No. 960,987 filed Nov. 15, 1978, now U.S. Pat. No. 4,231,783.

Abstract: Novel bi-metallic filamentary composites are produced by first forming a conjugate precursor filament comprised of an organic polymer together with particles of a first reducible metal oxide and particles of a second reducible metal oxide with the metal component of each of the two metal oxides being sinterable at a temperature which is below the melting point of the other. The structure of the precursor is characterized by a first longitudinally extending layer along its length which contains the particles of the first reducible metal oxide, and an adhering second essentially distinct longitudinally extending layer extending along its length which contains the particles of the second reducible metal oxide. The essentially discrete layers may be in a sheath-core arrangement or in side-by-side relationship.

Abstract: A polyolefin filter for tobacco products and the like was prepared. The extruded element is an open-cell foamed polyethylene or polypropylene having a TPM filtration efficiency greater than 20%. The filter rod can be made by extruding polyethylene containing less than 0.2 moles of a volatile blowing agent per 100 grams of resin at a melt temperature between 130.degree. C. and 150.degree. C., the temperature of the die being between 120.degree. C. and 136.degree. C. Higher melt temperature and die temperature are required for polypropylenes.

Abstract: Processes are disclosed for sealing the ends of the bores of a plurality of hollow fiber membranes comprised of a thermoplastic material which membranes are arranged in the form of a bundle by subjecting the ends of the hollow fiber membranes to heat to effect the sealing. The heat also causes the ends of the hollow fiber membranes to adhere to one and another. An insert material is placed within the bundle of hollow fiber membranes at the zone which is subjected to the heat. This insert material provides a barrier to the adhering of the hollow fiber membranes and thus provides a fluid passageway at the sealed end of the bundle.

Abstract: Essentially inorganic monolithic hollow fibers having a radially anisotropic internal void volume wall structure. Process for the production of such fibers. Apparatus and processes using such fibers.

Abstract: In apparatus containing a bundle of tubes such as permeators, a tubular spacer substantially surrounds a tube sheet in which tubes are embedded for at least a portion of the lateral surface of the tube sheet. The tubular spacer serves to position the tube sheet within the apparatus. The tube sheet has at least one rise region intermediate a face and an expanded zone having larger cross-sectional dimensions than the corresponding dimensions of the face, and the rise region is adapted to abut the tubular spacer. The tube sheet can have sufficient length along the orientation of the tubes in order to ensure a fluid tight relationship between tubes and the tube sheet, and the amount of material to form the tube sheet can be reduced, thereby minimizing the effect of differential expansions.