Abstract:
An electrodepositable coating composition is provided comprising (a) an active hydrogen-containing, cationic salt group-containing resin electrodepositable on a cathode; (b) a curing agent for transurethanation, transamidation or transesterification curing like at least a partially capped polyisocyanate curing agent; and (c) a catalytic mixture of bismuth and an amino acid or amino acid precursor. Optionally, an auxiliary acid may be present to increase the effectiveness of the amino acid in the mixture with bismuth.
Abstract:
The invention provides a method of improving the corrosion resistance of a metal substrate. The method comprises:
(a) electrophoretically depositing on the substrate a curable electrodepositable coating composition to form a coating over at least a portion of the substrate, and (b) heating the substrate to a temperature and for a time sufficient to cure the coating on the substrate. The electrodepositable coating composition comprises a resinous phase dispersed in an aqueous medium, the resinous phase comprising:
(1) an ungelled active hydrogen-containing, cationic salt group-containing resin electrodepositable on a cathode; (2) an at least partially blocked polyisocyanate curing agent; and (3) a pigment component comprising an inorganic, platelike pigment having an average equivalent spherical diameter of at least 0.2 microns. The electrodepositable coating composition demonstrates a pigment-to-binder ratio of at least 0.5. The coating composition contains less than 8 percent by weight of a grind vehicle.
Abstract:
Disclosed are an ink composition for an electrophoresis apparatus including (A) a semiconductor nanorod; and (B) a compound represented by Chemical Formula 1, and a display device manufactured using the ink composition for an electrophoresis apparatus.
Abstract:
In forming an electrophoretic gel, various defects can be induced by the shrinkage that generally accompanies polymerization. These defects can include pulling away from a vessel wall or voids or bubbles forming within the gel itself. Prior to polymerization, a monomer can be compressed to a density at least equal to that of the expected density of the final gel, which then is substantially free of such shrinkage defects. The disclosed method is readily generalizable to other situations to produce polymers substantially free of defects due to shrinkage.
Abstract:
An element for electrophoresis suitably employable for analysis of biopolymers such as proteins, as well as for determination of base sequence of DNA, RNA, their fragments, and their derivatives, which comprises a plastic material support, an adhesive layer containing an inorganic oxide and a binder, a medium layer for electrophoresis comprising an aqueous polyacrylamide gel formed by crosslinking polymerization of an acrylamide compound and a crosslinking agent in the presence of water, and a plastic material covering film. The electrophoresis medium layer may contain a water-soluble polymer and agarose. The medium layer may contain a modifier such as an anionic surfactant, formamide or urea.
Abstract:
A conductive composite is formed which consists of a host polymer and polypyrrole ("PP") deposited on and within the host polymer. Instead of using a conductor as a starting substrate, an insulating polymer is at least partially impregnated with sufficient pyrrole (PY) monomer to become conductive after the PY is polymerized. The polymerization is a chemical oxidative polymerization ("dip-polymerization") which, if carried out under anhydrous conditions, transforms the insulating polymer into a semiconductive composite consisting essentially of the host polymer containing a first species of conductive PP and a Group VIII metal halide counterion; thereafter, the semiconductive composite, containing the counterion, is used to electrodeposit on it a second species of conductive PP. The composite with the two species of PP and anions is used for EMI shielding, and in a host of applications where a lightweight organic resistance heating element is desired, for example in de-icers for the wings of an airplane, to melt snow on roof-tops and in gutters, and to warm a frigid seat in a vehicle.
Abstract:
A sewn pattern arrangement is produced by a zig zag sewing machine in a workpiece, within the range of a modular pattern length and width. Individual elementary patterns are sewn which are formed by several stitches and are preferably of the cross-stitch type and extend each only over a fraction of the modular pattern width. This makes it possible to sew elementary patterns at various locations within the provided range of widths, so that a variety of optically impressive designs may be produced by sewing pattern rows in a desired configuration. The respective final stitch of a pattern element forms the first stitch of the subsequent one, so that jump stitches between elementary patterns are avoided. Large-area patterns may be obtained by grouping rows of pattern elements side by side.
Abstract:
Smooth cured coated films having excellent properties are formed by electrodepositing and coating a film on a cathode of an electroconductive material in an electrodeposition bath containing a cationically electrodepositing composition, which is composed of a polymer resin having amino groups and acryloyl or methacryloyl groups and of acrylic or methacrylic acid, and curing the coated film by the irradiation of an ionic radiation.
Abstract:
Scale formation on heat exchanger surfaces in contact with solutions containing scale-forming salts is inhibited by electrodeposition of polymerized phenol or phenylenediamine on the surfaces. The deposition is accomplished by holding the heat exchange surfaces at a controlled electrical potential in the presence of a solution containing a low concentration of the monomer.