Abstract: A method for the determination of anti-treponemal antibody in a test sample comprises contacting a substrate for the anti-treponemal antibody with sample; treating the contacted substrate with labeled antihuman Ig antibody selected from (a) a mixture comprising enzyme labeled antihuman Ig antibody and fluorescent labeled antihuman Ig antibody, (b) antihuman Ig antibody labeled with an enzyme and a fluorescent label, and (c) fluorescent labeled antihuman Ig antibody to which enzyme labeled antibody against the animal species from which the antibody used in the fluorescent labeled antibody was derived is added subsequently, and (d) enzyme labeled antihuman Ig antibody to which fluorescent labeled antibody against the animal species from which the antibody used in the enzyme labeled antibody was derived is subsequently added; determining the enzyme activity of the treated substrate; and determining the immunofluorescent patterns in substrates exhibiting enzyme activity.

Abstract: Plastic films having improved antistatic properties are disclosed having a continuous coating on at least one surface of the film based on a composition comprising a mixture of:(a) a polymeric binder, and(b) a quarternary ammonium salt having the formula: ##STR1## wherein: R is a lower alkyl group having 1 to 3 carbon atoms;R' is an alkyl or alkenyl radical having from about 8 to 20 carbon atoms; andX.sup.- is an anion.The antistat coating composition may be applied to the film material at any suitable stage during manufacture, i.e., after extrusion of the sheet material or before, during or after orienting the sheet. The resultant film is found to possess markedly enhanced antistat properties, good clarity, good slip properties, reclaimability and adhesive properties at higher binder levels rendering it suitable for the application of other coatings.

Abstract: This invention relates to an improved overlay proofing film. More, particularly, the invention relates to an improved overlay proofing film comprising a substantially transparent polyester base film which has deposed thereon a substantially uniform adhesive layer comprising aluminum oxide, which adhesive layer has deposed thereon a substantially uniform optical layer comprising magnesium fluoride, said polyester base film being coated on either side with a light sensitive mixture ofa. a resinous binder;b. a colorant; andc. a light sensitive material.

Abstract: A process for surface modification of oriented polymeric film is disclosed. The process, applicable to polyesters, polyolefins, and polyamides, involves subjecting the film surface to at least one short pulse of intense electromagnetic radiation. Such surface treatment enhances the heat seal adhesion of the oriented polymeric film.

Abstract: An apparatus and method for sampling falling staple fiber is disclosed. The apparatus employs air pressure within the sampler housing which is substantially equivalent to the air pressure within the fiber chute to be sampled, in combination with a rod-like sample probe having a smooth, convex fiber-sampling section at one rounded end and, opposite thereto, a mounting means engagement end, with at least one protrusion mounted on said fiber-sampling section at or near said rounded end.

Abstract: An improved negative working photographic element is prepared by coating a suitable substrate with a photosensitive composition comprising an admixture of two light sensitive diazonium salts and a binder composition comprising a polyvinyl acetate resin and a styrene/maleic acid half ester copolymer. Upon imagewise exposure of the element to actinic radiation through a suitable mask, the unexposed portions are removable with an aqueous alkaline developer.

Abstract: Disclosed is a highly efficient continuous method for the aqueous extraction of water-soluble oxidation catalyst material from a residue such as that generated in the production of dimethyl terephthalate from p-xylene by the molecular oxygen oxidation and methanol esterification process. In the method the desired end product is an aqueous solution of the catalyst material. The residue to be extracted is established in finely dispersed condition in part of the aqueous solution at a weight ratio of aqueous solution to residue of above about 1:1 and maintained in that condition for a length of time sufficient for maximum transfer of catalyst material from the residue to the aqueous solution to take place. The resulting dispersion then is separated in a phase separation zone into an aqueous phase and an extracted residue phase. The separated aqueous phase is withdrawn from the phase separation zone as the aqueous solution.

Abstract: A biaxially oriented thermo-fixed multilayer film is described, consisting of thermoplastic polyester materials having different melting points and having an essentially scratch-free surface. The characterizing features of the multilayer film described consist in the fact that a cover layer of a polyester B is applied to at least one surface of a base layer of thermoplastic polyester A, said polyester B having a lower melting point than polyester A, and by the fact that no scratches longer than 3.0 mm and greater than 10 microns in cross-section are present on the surface of the cover layer.

Abstract: A method for the determination of anti-Epstein-Barr Virus antibodies in a test sample comprises contacting a substrate for the anti-Epstein-Barr Virus antibodies with sample; treating the contacted substrate with labeled antihuman Ig antibody selected from (a) a mixture comprising enzyme labeled antihuman Ig antibody and fluorescent labeled antihuman Ig antibody, (b) antihuman Ig antibodies labeled with an enzyme and a fluorescent label, (c) fluorescent labeled antihuman Ig antibody to which enzyme labeled antibody against the animal species from which the antibody used in the fluorescent labeled antibody was derived is subsequently added, and (d) enzyme labeled antihuman Ig antibody to which fluorescent labeled antibody against the animal species from which the antibody used in the enzyme labeled antibody was derived is subsequently added; determining the enzyme activity of the treated substrate; and determining the immunofluorescent patterns in substrates exhibiting enzyme activity.

Abstract: This invention relates to photosensitized sheet constructions which, upon exposure to an actinic radiation source through a screened image, can accurately reproduce said image. The construction is useful as a color proofing film which can be employed to accurately predict the image quality from a lithographic printing process. This system allows the operator to use either a full layer transfer or an image transfer method of color proofing.

Abstract: The invention provides a method for producing a positive working photoresist which comprises coating at least one novolak resin, and 1-naphthalenesulfonic acid, 3-diazo-3,4-dihydro-4-oxo-,4-benzoyl-1,2,3-benzenetriyl ester onto a substrate, exposing to a u.v. light source having a wavelength of less than 380 nanometers and developing with an aqueous alkaline solution.

Abstract: An oriented polyester film coated on one or both sides with a crosslinked vinyl acetate polymer composition which renders the polyester film surface receptive to additional reprographic or matte coatings applied thereto, and to film containing the reclamation product of such coated film.

Abstract: The invention provides a method for developing negative working photographic elements using an aqueous developer comprising(a) .alpha.-hydroxy toluene; and(b) C.sub.12 sodium alkyl ether sulfate.

Abstract: A light sensitive composition for the preparation of a positive acting photoresist which is a mixture of an alkali soluble resin and a compound of the formula ##STR1## wherein X is a naphthoquinone-(1,2)-diazide-(2)-sulfonyl residue.

Abstract: A primer coated, oriented polyester film material is provided wherein the primer is applied in an aqueous medium comprising a water dispersible copolyester consisting essentially of the condensation product of components A, B, C, and D or their polyester forming equivalents as follows:(A) about 60 to 75 mole percent of terephthalic acid;(B) about 15 to 25 mole percent of at least one dicarboxylic acid of the formula HOOC(CH.sub.2).sub.n COOH, wherein n ranges from about 1-11;(C) greater than from about 6 up to about 15 mole percent of at least one sulfomonomer containing an alkali metal sulfonate group attached to a dicarboxylic aromatic nucleus, and(D) stoichiometric quantities, i.e., about 100 mole percent of at least one aliphatic or cycloaliphatic alkylene glycol copolymerizable therewith having about from 2 to 11 carbon atoms.The copolyester priming layer may be applied to the polyester film at any suitable stage during manufacture of the film, i.e., before or during the stretching operations.

Abstract: 6,11-Dihydrodibenz[b,e]oxepin-acetic acids and derivatives having the general formula ##STR1## are prepared by multi-step sequences. X is C.dbd.O, CHCl, CHBr, CH.sub.2 or CHOR.sup.4 ; Y is alkyl or alkoxy of 1 to 4 carbon atoms, halogen or trifluoromethyl; n is 0, 1, 2 or 3; Z is COOR.sup.5, CH.sub.2 OR.sup.5, CONR.sub.2.sup.5 or CONHOR.sup.5 ; and R.sup.1 -R.sup.5 are hydrogen or alkyl of 1 to 4 carbon atoms.These compounds and the physiologically tolerable salts thereof are useful as antiinflammatory and analgesic agents.

Abstract: An improved substrate suitable for use as a base for a lithographic printing plate, especially a plate useful for the production of continuous tone images. The substrate is produced by extremely uniformly graining an aluminum sheet which has a highly polished, mirror-like surface.

Abstract: The invention provides an electrochemical process for applying a firmly bonded substantially insoluble metal oxide-organic complex on a metal surface by employing the metal as anode and a water-soluble polybasic organic acid plus a base as electrolyte. The polybasic acid may be a polyphosphonic acid, polyphosphoric and polycarboxyl acid, or polysulfonic acid and is advantageously polymeric. Polyvinyl phosphonic acid (PVPA) is a preferred electrolyte. Direct current is used. The insoluble metal oxide-organic complex formed is composed of anodic oxide combined with polyacid, which forms a protective layer on the metal of improved corrosion resistance. The metal oxide-organic complex is well-suited to bond light sensitive coatings thereto. The metal may be steel, aluminum or magnesium. The process is economical and the product novel. Sufficient base is added to give the electrolyte a pH in the range of from about 3 to about 10.

Abstract: Provided is a device useful for the uniform electrolysis of a metal sheet workpiece. It is especially useful for the laboratory scale testing of various methods of electrolytically etching aluminum. The device has a generally rectangular frame having non-electrically conducting walls capable of containing an electrolyte; at least one electrode; electrically conducting clamping means to rigidly hold a metal workpiece within the frame at a fixed distance from the electrode; means for circulating the electrolyte about the workpiece; and means for applying a current between the workpiece and electrode.

Abstract: A prime coated oriented polyester film material is disclosed wherein the primer coating consists essentially of a crosslinked copolymer containing at least about 50% by weight of acrylic and/or methacrylic monomers and from about 1% to 15% by weight of a comonomer capable of inter-molecular crosslinking upon the application of heat, and from 0 to about 49% by weight of one or more halogen-free mono-ethylenically unsaturated monomers copolymerizable therewith.The priming layer may be applied to the polyester film at any suitable stage during manufacture of the film, i.e., before or during the stretching operations, and is crosslinked after application by means of heat. The resultant primed polyester film is found to provide excellent adhesion to many organic solvent based coatings subsequently applied thereto, and to be reclaimable when reprocessed during the manufacture of polyester film without giving rise to significant or intolerable discoloration or degradation of the film.