Abstract: A process is provided for making strong, permeable nonwoven fabrics having an abrasion-resistant burnished surface. The process involves providing a lightly consolidated or weakly bonded web of thermoplastic synthetic organic fibers, needle punching the web, heating a surface of the needled web, and burnishing the heated surface with a rotating, smooth-surfaced metal roll, which preferably simultaneously cools the web surface.

Abstract: Polyoxymethylene/thermoplastic polyurethane compositions having 5-40 weight percent polyurethane are modified by incorporating therein 0.2-1.0 weight percent ethylene bis-stearamide to improve mold release and mold deposit.

Abstract: Peptide and amino acid halomethyl ketones are employed in processes for inhibiting cyclic nucleotide independent protein kinase activity and tumor cell growth.

Abstract: A composition for forming a densified dielectric body at low firing temperatures comprising a mixture of particles consisting essentially of(a) 95.5-99.4% finely divided wt. of a mixture of metal oxides, metal oxide precursors or polynary oxide reaction products thereof in molar proportions corresponding to the formula(Sr.sub.x Pb.sub.1-x TiO.sub.3).sub.a (PbMg.sub.r W.sub.s O.sub.3).sub.b,and(b) 4.5-0.6% wt. of a mixture of metal oxides or precursors thereof consisting essentially of (1) a binary oxide of a transition metal selected from the group consisting of Co, Ni, Cr, Mn and mixtures thereof, (2) Cd titanate, Zn titanate or mixtures thereof, and (3) a polynary oxide selected from the group consisting of Cd zirconate, Zn zirconate, Cd stannate, Zn stannate and mixtures thereof.

Abstract: Flame retardant thermoplastic multi-block copolyester elastomer compositions containing a bromine-containing flame retardant; antimony trioxide; and an organophilic clay which is the reaction product of at least one quaternary ammonium salt with a smectite clay.

Abstract: This invention relates to 1-benzopyransulfonamides, 1-benzothiopyransulfonamides, 1-benzoxepinsulfonamides and 1-benzothiepinsulfonamides which are useful as plant growth regulants and in particular as herbicides.

Abstract: This invention relates to N-(heterocyclicaminocarbonyl)-o-alkenylbenzenesulfonamides which are useful as agricultural chemicals.

Abstract: Poly(p-phenylene-trans-benzobisthiazole) and poly(p-phenylene-cis-benzobisoxazole) fibers are rendered more adherent to epoxy resins by treatment with an oxygen containing gas under specified conditions.

Abstract: This invention is based upon a new concept in carbon artifact manufacture, wherein a precursor can be manufactured by blending extracted components of at least one pitch to give an optimized mixture having the proper chemistries and rheology to provide high strength carbon artifacts.

Abstract: Processes for preparing the useful intermediates having the formula ##STR1## are disclosed herein, utilizing novel chemical compounds having the formula ##STR2##

Abstract: A two-dimensional data array, such as an orthogonally scanned television image, is divided into a multiplicity of elemental blocks each containing a given number of PCM samples which are converted by linear transformation into a series of coefficients to be quantized for transmission to a remote receiver. The data blocks are processed one at a time by an iterative coder which allots a progressively increasing number of bits to a given block in successive operating stages, the bits being allocated to the several coefficients of the block according to the position of the barycenter of their signal energy assigning the block to one of K classes. An initial overall reconstruction error, computed from the coefficients of a block with no bits yet available for quantization, is updated with each bit allotment in the course of an iteration in which a selected coefficient is subjected to simultaneous coding with S quantizers differing from one another in their quantum steps.

Abstract: An optical recording element comprising a light-absorptive layer supported by a dimensionally stable substrate in which the light-absorptive material is a uniformly smooth, thin, homogeneous layer of film-forming polymeric dye having a light absorptivity of at least about 0.046 in the visible and/or infrared spectral regions.

Abstract: Low valent transition metal complexes containing small cone angle phosphine or arsine ligands efficiently catalyze addition of aldehydes to compounds or groups having a C--H bond activated by a nitro or nitrile group, to provide nitroalcohols or cyanohydrins, respectively.

Abstract: A composition comprising 2-3 wt. % carbon black, 25-1000 ppm and preferably 75-250 ppm of a fluoroelastomer and the remainder polyethylene is disclosed. The fluoroelastomer prevents die buildup during extrusion of the composition which is believed to be caused by moisture associated with the carbon black. Alternatively, the die may be conditioned by extruding polyethylene containing 0.5-5 wt. % of the fluoroelastomer and then carbon black containing polyethylene without the fluoroelastomer can be extruded for a substantial period before die buildup begins to occur.

Abstract: Compounds of the class of phenoxy esters of N-[(heterocyclic)aminocarbonyl]sulfamic acid, such as N-[(4,6-dimethoxypyrimidin-2-yl)aminocarbonyl]sulfamic acid. 2-(trifluoromethylthio)phenyl ester, useful as pre-emergent or post-emergent herbicides.

Abstract: A method for the rapid detection of virus and viral antigens associated with somatic cells in biological test samples is disclosed. The method comprises lysing the cells with a lytic agent to reveal virus or viral antigens for participation in a virus detection system. The lytic agent is chosen for its biological neutrality in the detection system, particularly its inability to produce a cytopathic effect in tissue culture.

Abstract: "Living" polymers, their preparation from acrylic-type or maleimide monomers and organosilicon, -tin or -germanium initiators, and bifluoride ion co-catalysts which are used in the preparation.

Abstract: This invention relates to a rifle cartridge magazine for carrying and automatically feeding a plurality of rifle cartridges one at a time sequentially into the breech of a rifle characterized by a housing open at the top containing an arcuately-curved cartridge compartment therein sized and shaped to define a track effective to engage the front and rear ends of each cartridge and guide same into the breech, a pair of ribs depending from one face of the housing and extending into the cartridge compartment in spaced parallel relation to one another defining rails paralleling the front and rear ends of the track located in between the latter, a follower provided with spaced parallel slots extending transversely thereof on one side for riding the rails, the aforementioned slots and rails cooperating with one another to maintain the follower in substantially perpendicular relation to the track ends, and at least one constant force coiled clock spring having one end pivotally secured adjacent the open upper end of

Abstract: Particle reagents, having polyether polyamine linking groups, for use in turbidimetric immunoassays are provided. These linking agents permit ready covalent attachment of compounds of biological interest to polymer particles and lead to immunoassays of improved precision.

Abstract: A tube coupling having a male body, a female body for receiving at least a portion of the male body and at least one peripheral member made from a relatively compressible plastic material molded into a groove within either the relatively rigid male or female body. The peripheral member is disposed to become compresed against a surface of the mating body to form a liquid seal. At least two peripheral members disposed in grooves in a tubular shaped end portion of the male body are made of a compressible plastic and serve as liquid sealing and locking means. The female body comprises a receiving end portion with a tapered interior adapted to receive the male tubular end portion. As the tubular end portion is inserted into the receiving end portion, one of the peripheral members engages the tapered interior surface and becomes compressed there against as the tubular end portion is further inserted.