Abstract: A pressure sensor comprising a stable polymer having a backbone containing nitrogen and one or more of sulfur or phosphorous, and including a phosphorescent dye agent.

Abstract: An electrophoresis separation medium is disclosed comprising a matrix of a copolymer composed of a linear hydrophilic polymer segment having a selected substantially uniform segment length and hydrophobic polymer segments carried on each end. Also disclosed is an electrophoresis method employing the separation medium which permits high resolution separation of polynucleotides, especially in DNA sequencing operations.

Abstract: A fluorophore is added to or chemically attached to a curable release coating and the release coating is applied to a substrate. By exposing the release coating to an ultraviolet light source and measuring the intensity ratio of the dimer to monomer fluorescence, the cure of the release coating can be monitored. This method can be used as an on-line cure monitor in order to determine and control the extent of cure of coated substrates particularly silicone release liners.

Abstract: Pyrene based fluorescent organopolysiloxanes which bear two or more reactive silicon-bonded sites are useful as durable markers and indicators of the degree of cure in curable silicone compositions. Having more than one reactive site the compounds participate in the curing reaction of the curable composition and thus do not adversely affect its curing behavior. The resulting fluorescent curable compositions are particularly useful in the preparation of adhesive-release coatings.

Abstract: A viscous electrophoresis separation medium is disclosed. The medium is formed by a matrix formed by a copolymer composed of hydrophilic polymer segments having selected, substantially uniform segment lengths, and a plurality of hydrophobic polymer segments carried on, and spaced from one another by the hydrophilic polymer segments. Also disclosed is an electrophoresis method which employs the separation medium, and novel copolymers used in forming the medium.

Abstract: This invention relates to naphthalenedicarboxylic acid containing polymer compositions having reduced fluorescence. More specifically, the polymers contain at least 0.1 mole percent of a dicarboxylic acid selected from 2,6-naphthalenedicarboxylic acid or 2,6-naphthalenedicarboxylate ester, with 0.1 to 5 mole percent of a copolymerizable halogen containing aromatic compound. These polymers are useful for packaging applications where clarity and/or aesthetic appeal are of concern.

Abstract: This invention relates to naphthalenedicarboxylic acid containing polymer compositions having reduced fluorescence. More specifically, the polymers contain at least 0.1 mole percent of 2,6-naphthalenedicarboxylic acid or 2,6-naphthalenedicarboxylate ester, with 0.1 to 5 mole percent of a copolymerizable aromatic ketone. These polymers are useful for packaging applications where clarity and/or aesthetic appeal are of concern.

Abstract: This invention relates to a poly(ethylene 2,6-naphthalene dicarboxylate) composition having reduced fluorescence. More specifically, the composition contains poly(ethylene 2,6-naphthalene dicarboxylate) with 0.1 to 5 mole percent of a copolymerizable halogen containing aromatic compound. The polyesters are useful for packaging applications where clarity and/or aesthetic appeal are of concern.

Abstract: This invention relates to a poly(ethylene 2,6-naphthalene dicarboxylate) composition having reduced fluorescence. More specifically, the composition contains poly(ethylene 2,6-naphthalene dicarboxylate) with 0.1 to 5 mole percent of a copolymerizable aromatic ketone. The polyesters are useful for packaging applications where clarity and/or aesthetic appeal are of concern.

Abstract: An ink composition comprised of a solution comprised of a dye comprised of a porphyrin chromophore.

Abstract: Disclosed is a process for preparing particles colored with a dye which comprises: (a) forming, by a free radical dispersion polymerization process in a nonaqueous solution, polymeric particles having attached thereto stabilizing copolymers with at least one functional group capable of undergoing a chemical reaction with a dye, the particles having an average diameter of from about 0.1 to about 20 microns; (b) adding a dye to the polymeric particles having attached thereto stabilizing copolymers; and (c) effecting a chemical reaction between the dye and the stabilizing copolymers that results in the dye becoming covalently bound to the polymeric particles. Also disclosed is a liquid electrophotographic developer composition comprising a liquid medium, a charge control agent, and colored polymeric toner particles prepared as stated above and having an average diameter of from about 0.5 to about 5 microns.

Abstract: Water-soluble, amide group containing polymers such as polyacrylamide are modified, to render them easy to detect, by reacting the polymer in aqueous solution with organic dye molecules which can form stable carbo-cations reversibly in water. The labelled polymers can then be detected spectrophotometrically. An example of a suitable dye molecule is 9-xanthydrol.

Abstract: Poly(methylmethacrylate) polymer particles of substantially increased average particle diameter are prepared by suspension polymerization in a medium comprising an alkane and a chlorinated hydrocarbon, e.g. carbon tetrachloride, in relative proportions chosen so as to provide buoyancy to the polymer particles so formed.