Abstract: An aqueous pigment dispersion is formed of a pigment, an aqueous medium and a dispersant resin. The dispersant resin contains a hydrophobic moiety and a hydrophilic moiety in its molecule. The hydrophobic moiety is a polyester linkage chain formed of ester linkages as primary linkages. The hydrophilic moiety is a water-soluble resin containing sulfonic groups or their salts. The water-soluble resin can be produced, for example, by reacting a polyol with maleic acid and/or fumaric acid to synthesize an unsaturated polyester resin and then adding acid sulfurous acid or its salt to the unsaturated polyester resin to form groups represented by the following formula (I): ##STR1## wherein M.sup.1 represents a hydrogen atom, an alkali metal, an ammonium group or a lower aliphatic quaternary ammonium group. The aqueous pigment dispersion is useful as a water-based ink for writing or recording equipments such as writing instruments, printers, copying machines, fax machines and printing machines.

Abstract: As a vehicle resin used for self-polishing antifouling paints, a vinyl polymer having a plurality of primary amino groups in the form of Schiff base in the molecule is used. The films of an antifouling paint containing this vehicle resin gradually release an aldehyde exhibiting antifouling activity from the Schiff base group upon hydrolysis with sea water, while the film gradually dissolves from the surface.

Abstract: The present invention is related to a process for producing a polyurethane-based polymeric electrolyte including steps of: a) providing a polyurethane material as a matrix material; b) dispersing the matrix material in a first solvent to form a dispersion solution; c) drying the dispersion solution to form a thin film of polyurethane as a matrix of the polymeric electrolyte; and d) adding a component of an organic electrolyte into the matrix to form the polyurethane-based polymeric electrolyte. The present invention is also related to a polyurethane-based polymeric electrolyte including a thin film of a polyurethane serving as a matrix of the polymeric electrolyte; and an organic electrolyte arranged in the matrix for ionic conduction. The fabricated thin film electrolyte has satisfactory conductivity and can be suitably used in cells.

Abstract: Micropowders having spherical particles possessing an essentially smooth surface structure contain, as essential components, polyarylene ether sulfones or polyarylene ether ketones and are obtainable by prilling melts thereof or spray-drying solutions thereof.

Abstract: A spherical annular seal member has a through hole in a central portion thereof and a partially convex spherical surface portion on an outer surface thereof, and is formed by compression molding a mixture consisting essentially of from 40 to 80% by weight of steel fibers or wool chops, from 3 to 20% by weight of a borosilicate glass powder, and from 15 to 50% by weight of a graphite powder.

Abstract: To obtain elasticity imparting agents for paints comprised of liquid non-aqueous polymer dispersions which, when added to paints, improve the scratch resistance without lowering the acid resistance of the hardened paint film. A liquid non-aqueous polymer dispersion which contains (a) 40-90 percent by weight organic solvent, (b) 10-50 percent by weight particle component comprised vinyl based copolymer which contains 30 percent by weight or more of structural units of formula (1), and (c) 5-40 percent by weight dispersion stabilizer for dispersing the (b) component in the (a) component. In formula (1) R.sup.1 -R.sup.5 are H or methyl groups, m is 0-2, n is 0-10, p is 0 or 1, q is 0-3 and r is 0-3.

Abstract: Esterification reactions conducted in the presence of Lewis acids, including the reactions between aromatic carboxylic acids and alcohols and between epoxides and carboxylic acids, may be conducted with the use as the catalyst of a hexaalkylguanidinium or .alpha.,.omega.-bis(pentaalkylguanidinium)alkane salt such as hexaethyiguanidinium chloride or bromide.

Abstract: A bulk extrusion polymerization process to derive an aliphatic polyester from a suitable ester monomer, preferably .epsilon.-caprolactone. Novel reaction formulations containing less than 100 ppm water and having an acid value less than 0.5 mg KOH/g and preferably less than 0.2 mg KOH/g enable the polymerization of bulk monomer in an extruder in a resident time of less than 2 minutes. Different catalyst and initiator systems, processing protocols, and screw configurations lead to the preferred manufacture of poly(.epsilon.-caprolactone) polymer of number average molecular weight, M.sub.n, greater than 100,000. A novel poly(.epsilon.-caprolactone) intermediate optionally grafted to starch, is described which has significantly different processing and use characteristics as compared to a straight-chain polycaprolactone.

Abstract: The present invention provides an ablatively photodecomposable polymer having a photoabsorber bound to the polymer (the "ablatively photodecomposable polymer") which does not phase separate, nor does it crystallize. The ablatively photodecomposable polymer provides even ablation, high resolution and in preferred embodiments, can withstand potassium permanganate etchant and ferric chloride etchant. The ablatively photodecomposable polymer is strippable, although it can remain on the substrate if desired. The ablatively photodecomposable polymer comprises a polymer to which a photoabsorber is bound, either covalently or ionically. The present invention is also directed to a process for forming a metal pattern on a substrate employing the ablatively photodecomposable polymer.

Abstract: The present invention relates to a composition and method for forming a high thermal conductivity polybenzoxazine-based material. The composition comprises at least one benzoxazine resin and a filler material which includes particles of boron nitride in an amount sufficient to establish a thermal conductivity of between about 3 W/mK and 37 W/mK in the polybenzoxazine-based material.

Abstract: Aromatic polyimide powder wherein a solid portion consisting of a highly heat resistant crystalline aromatic polyimide is covered with a coating layer of an amorphous polyimide, and a process for producing polyimide powder molded bodies by compression molding of the powder. The polyimide powder has satisfactory secondary molding workability, and molding thereof gives molded bodies which retain heat resistance and dimensional stability while having high mechanical strength and elongation.

Abstract: Disclosed is a polymer composition which comprises as the main components an ethylene-vinyl alcohol base copolymer (A) and a block copolymer (B) which has a polymer block containing an aromatic vinyl monomer unit and a polymer block containing an isobutylene unit, and in which a phase composed of said component (A) and a phase composed of said component (B) are separated each other. This polymer composition has good flexibility or rubber elasticity and also good barrier properties to gases or the like and it can be molded or formed into a product having such properties without a vulcanization step so that it is useful as a material for packaging material for food or drink, container packing, medical container for infusion fluid or the like.

Abstract: The invention relates to binders for antifouling coating compositions, which can be prepared by copolymerizing polymerizable monomers, wherein, as polymerizable monomers, mixtures ofA) at least one of the compounds of the general formula I ##STR1## and B) at least one ethylenically unsaturated compound having the general formula II ##STR2## with or without C) at least one ethylenically unsaturated compound are polymerized.

Abstract: A method for making a dispersion for an ink, and the ink obtained from this method. The method comprises preparing a dispersion comprising colorant agglomerates and reducing the agglomerate size using a plastic medium. The dispersion is formed by dispersing the colorant agglomerates in a dispersant, optionally in the presence of a liquid carrier such as distilled or deionized water. The colorant in the dispersion may be a carbon black, yellow, cyan, or magenta pigment, or a combination thereof. The plastic medium is preferably a grinding medium, such as polystyrene.

Abstract: A magnetic composition comprising nanocomposite particles comprising from about 0.001 to about 60 weight percent of magnetic nanocrystalline particles dispersed in from about 40 to about 99.999 weight percent of a discrete phase matrix, and a continuous phase matrix, wherein the discrete phase resides in interstices within the continuous phase matrix.

Abstract: Fluoroplastics become identifiable as to source by incorporating 1 to 450 ppm of inorganic phosphor into the fluoroplastic which does not degrade the fluoroplastic upon processing at a temperature of 300.degree. C. and does not discolor the fluoroplastic but does emit radiation which is characteristic of the phosphor when the fluoroplastic is exposed to excitation radiation.

Abstract: A new molding composition used, for example, in a rotationally-molded thermoplastic refuse container of the type having a hollow handle integrally-molded with a refuse carrying compartment of the container, the improvement which includes a wall integrally-formed with the refuse container and sealingly enclosing the hollow handle from communication with the refuse-carrying compartment of the container for providing greater strength to the container and preventing refuse from lodging in the hollow handles.

Abstract: The disclosed oriented polyolefin film contains at least one voided layer. The voided layer contains an amorphous void-initiating polymer which, after orienting, is present as a separate particle inside the void. In the process for producing the polyolefin film, a molten blend comprising an olefin polymer and the amorphous polymer is extruded through a die at an extrusion temperature above the glass temperature or Vicat softening point of the amorphous polymer, the resulting film is drawn off on one or more rollers, and is then subjected to stretch orientation, followed optionally by thermofixing and a surface treatment.

Abstract: Multifunctional polymerizable vinyl cyclopropane derivatives are described which have at least two vinyl cyclopropane units and are suitable in particular as a constituent of dental materials.

Abstract: Distilled tall oil may be reacted with phenol-containing organic compound, formaldehyde or reactive equivalent thereof and hydroxyl-containing non-phenolic organic compound to prepare a resin. The resin may be formulated with a colorant to provide an ink for lithographic printing.