Abstract: A method for treating an aluminum sheet useful for lithography by etching said sheet in an aqueous bath containing up to about 25% of nitric and/or hydrochloric acids and from about 1% to about 25% of an inorganic fluorine containing acid or salt thereof. Said etching step is sequentially followed by electrochemical graining and anodizing process steps.

Abstract: Multi-ring fluorinated carbamates are disclosed which have excellent anti-soiling properties, durability and resistance to laundering. The compounds are represented by the formula ##STR1## wherein R.sub.f is a fluorinated radical. Compositions containing at least 10% of such compounds are also disclosed, as well as polyester and nylon fibers having such compounds incorporated therein.

Abstract: A coated, oriented plastic film material is provided wherein the coating 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 65 to 95 mole percent of isophthalic acid;(B) about 0 to 30 mole percent of at least one aliphatic dicarboxylic acid of the formula HOOC(CH.sub.2).sub.n COOH, wherein n ranges from about 1-11;(C) about 5 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 of about 100 mole percent of at least one copolymerizable aliphatic or cycloaliphatic alkylene glycol having about from 2 to 11 carbon atoms.The copolyester coating layer may be applied to the film, e.g., polyester film, at any suitable stage during manufacture of the film, i.e., before, during, or after the stretching operations.

Abstract: A method for the determination of autoantibody in a test sample comprises contacting a substrate for the autoantibody with sample; treating the contacted substrate with labeled antihuman antibody selected from (1) a mixture comprising enzyme labeled antihuman antibody and fluorescent labeled antihuman antibody, and (2) antihuman antibody labeled with an enzyme and a fluorescent label; determining the enzyme activity of the treated substrate; and determining the immunofluorescent patterns in substrates exhibiting enzyme activity. The method is useful for the rapid screening and characterization of autoantibodies.

Abstract: This invention relates to an improvement in a photochemical process for the preparation of printing plates wherein a printing plate comprising a photosensitive composition coated on a support is exposed to a pattern of laser light, the intensity of which is modulated in accordance with an input source of information and said printing plate is subsequently developed by removal from said support of that portion of the photosensitive coating composition which is not exposed to said pattern of laser light, the improvement comprising utilizing a pattern of laser light generated by a laser at a wavelength greater than about 450 nm, and utilizing as a photosensitive composition a negative-working condensate of a para-aminobenzene diazonium compound, said compound being present in a quality of at least 25% of the total coating weight.

Abstract: A prime coated oriented polyester film is disclosed wherein the primer coating is applied as an aqueous medium consisting essentially of a material selected from the group consisting of a water soluble alkali metal salt of an unsaturated fatty acid having from about 10 to 18 carbon atoms and mixtures of such salts or a water soluble alkali metal salt of an alkyl sulfate having from about 8 to 18 carbon atoms and mixtures of such salts. Preferred species include sodium oleate and sodium lauryl sulfate. The alkali metal salt 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, or after stretching and prior to winding of the film. The resultant primed polyester film is found to provide excellent adhesion to many aqueous or organic solvent based printing inks subsequently applied thereto.

Abstract: Novel spiro[indoline-3,4'-piperidine]s and related compounds and methods of preparing same are described. These compounds are useful as antidepressants, anticonvulsants and tranquilizers. Also described is a novel method of preparing indoline rings.

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: Fluorinated esters based on multi-ring anhydride systems are disclosed which have excellent anti-soiling properties, durability and resistance to laundering. The compounds are represented by the formula ##STR1## wherein n is 2 or 3, Q is a linking group such as --CO--, --O--, or (C.sub.a H.sub.2a+2-n --(O.sub.2 C).sub.n, R.sub.f is a fluorinated radical, and R is derived from an epoxide such as ethylene oxide or epichlorohydrin. Also disclosed are polyester and nylon fibers having these compounds incorporated therein, and a process for producing such soil-repellent fibers.

Abstract: Assay reagents for the determination of enzymes such as .alpha.-amylase, .alpha.-glucosidase, .beta.-glucosidase, and acid and alkaline phosphatases are described. The reagents comprise a substrate capable of releasing the chromophore p-nitrophenol at a rate proportional to the amount of enzyme being assayed and a buffer material that eliminates the temperature dependence of the chromophore.

Abstract: The invention provides a photographic element having a substrate and a photosensitive coating on the substrate, said coating containing(A) the polycondensation product of 3-methoxy-4-diazodiphenyl amine sulfate and 4,4'-bis-methoxy methyldiphenyl ether, precipitated as methane sulfonate; and,(B) the polycondensation product of 3-methoxy-4-diazodiphenyl amine sulfate and 4,4'-bis-methoxy methyldiphenyl ether, precipitated as mesitylene sulfonate, and(C) at least one colorant: and(D) at least one water soluble polymeric binding resin which is preferably polyvinyl pyrrolidone. The element is developable using water alone as a solvent.

Abstract: An immunoadsorbent material comprising inactivated, protein-A bearing Staphlococcus aureus immobilized in a polymeric matrix is used to remove IgG immunoglobulins and immune complexes from whole blood.

Abstract: An apparatus and method for transferring a moving web from one windup core to another windup core comprising a plurality of rotatable core chucks mounted on a revolvable turret, means for leading said web towards said cores, and means for forming and severing a leader strip of web material for subsequent securing to an empty cylindrical windup core.

Abstract: According to the invention there is provided an electrochemical process for applying a firmly bonded insoluble metal oxide-organic complex on a metal surface by employing the metal as anode and a water-soluble polybasic organic acid 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.

Abstract: Presensitized lithographic printing plates, having extended press run life, are provided by electrolytically passing a current through the light-sensitive material in the prefabricated plate. Press runs of up to sixty percent longer than expected are possible with plates which are so treated.

Abstract: A photographic element comprising a transparent support and a coating on the support comprising a diazonium composition having a light absorbency of about 45% or less, and a colorant composition, said coating having a light transmission of not more than about 0.1%.

Abstract: According to the invention there is provided an electrochemical process for applying a firmly bonded insoluble metal oxide-organic complex on a metal surface by employing the metal as anode and a water-soluble poly basic organic acid as electrolyte together with a strong inorganic acid such as phosphoric acid or further admixed with another strong inorganic acid such as sulfuric. 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 or aluminum. The process is economical and the product novel.

Abstract: An aqueous, liquid fiber-reactive dye composition which is stable to decomposition is disclosed. The composition consists essentially of 5 to 45% by weight of a water-soluble, fiber-reactive dyestuff having from 1 to 3 .beta.-sulfatoethylsulfonyl (--SO.sub.2 CH.sub.2 CH.sub.2 OSO.sub.3 H) groups, or a mixture of such dyestuffs; 0 to 10% by weight of water-soluble inert inorganic salt; and 45 to 95% by weight of water. Said liquid dye composition must have a pH of about 2.5 to about 4.5 and must be substantially free of buffer substances. The liquid dye composition may be stored for long periods of time at 0.degree. to 50.degree. C. with substantially reduced decomposition to the vinylsulfonyl dye form.

Abstract: This invention relates to proof film-type light sensitive diazonium materials containing accelerators selected from sulfur and/or amide-containing compounds which are capable of accelerating the contact exposure of negative-working diazonium compounds when such diazonium compounds are subjected to UV radiation. These accelerators enhance essentially photosensitivity speed. The invention also relates to presensitized reproduction materials comprising diazonium materials containing these accelerators.

Abstract: This invention relates to novel condensation products, novel light-sensitive condensation products of aromatic diazonium salts, processes for preparation thereof, and to light-sensitive reproduction materials, which latter comprise a support having a reproduction layer containing at least one of the novel light-sensitive products. The light-sensitive condensation products are prepared by first homo-condensing non-diazo containing monomers of the structure R--M--R to form an oligomer. The oligomer is next condensed with an aromatic diazonium salt form the desired novel light-sensitive condensation product. R is a reactive substituent capable of undergoing condensation reactions in acid medium. M is selected from the group consisting of aromatic hydrocarbons, diaryl ethers, diaryl sulfides, diaryl amines, diaryl sulfones, diaryl ketones and diaryl diketones. The resulting novel light-sensitive condensation products have approximately four times the speed of prior art compounds.