Abstract: A pitch-type fiber convertible to an activated carbon fiber is infusiblized with an infusiblizing gas and the infusiblized fiber is activated with an activating gas, such as steam, to produce an activated carbon fiber. The waste gas from the infusiblizing step is utilized in a combusting step. The combustible component of the waste gas from the activating step is separated out of the waste gas from the activating step and combusted in the combusting step along with the waste gas from the infusiblizing step. The resulting heat from the combusting step is utilized to preheat the infusiblizing gas and the activating gas and the preheated gases are utilized in the infusiblizing step and the activating step, respectively. This arrangement allows the infusiblizing temperature and the activating temperature to be accurately controlled. Thus, an activated carbon fiber is manufactured continuously without being negatively affected by waste gases from the infusiblizing and activating steps.

Abstract: Disclosed are aqueous crosslinked polymer particles which provide excellent properties and paint workability. Aqueous crosslinked polymer particles have 20 to 200 nm of an average particle size (De), measured by a transmission electron microscope after dyeing with uranyl acetate, and also have 0.5 to 0.9 of an average roundness (R) represented by the equation:R=(Lc/L).sup.2wherein Lc is a perimeter of a circle, having the same area as that of a particle measured by the transmission electron microscope, and L is a perimeter of a particle measured actually. A process for producing aqueous crosslinked polymer particles is also disclosed.

Abstract: Disclosed is a reactive particulate resin which is characterized by each particle thereof having a core of three-dimensionally crosslinked resin having a degree of crosslinking from 0.05 to 2.0 mmol/g, and a shell formed thereon having a radical-polymerizable ethylenic unsaturated bond and is formed by polymerization of one or more polyfunctional monomers (A) and one or more non-aromatic radical-polymerizable monomers (B), the polyfunctional monomer (A) having in the molecule (a) at least one species of 1-monosubstituted and 1,1-disubstituted radical-polymerizable ethylenic unsaturated bonds and also (b) at least one of at least one species of 1,2-disubstituted, 1,1,2-trisubstituted, and 1,1,2,2-tetrasubstituted radical-polymerizable ethylenic unsaturated bonds.

Abstract: The invention provides a thermosetting resin composition for thermoforming which comprises 100 parts by weight of thermosetting resin, 100-400 parts by weight of inorganic filler, and 5-30 parts by weight of reactive particulate resin having on the surface reactive group(s) crosslinkable with said thermosetting resin.

Abstract: The photosensitive transfer material of the invention comprises a support, a subbing layer comprising an organic polymer and an image-forming layer containing a photosensitive polymer, wherein the subbing layer and/or the image-forming layer contains a matting agent of core-shell type crosslinked resin particles consisting of a core part made of a polymer having a crosslinking degree of 0.05 to 3.0 mmole/g and a shell part made of a substantially linear polymer having at least one kind of a hydrophilic functional group.

Abstract: Disclosed are pigment composite particles which are superior in water resistance, weather resistance, thermal stability and hardness. The pigment composite particles are prepared by suspension-polymerizing an aqueous suspension comprising(a) a pigment paste comprising pigment and a pigment grinding resin having a hydrophilic group of at least 0.2 mmol/g,(b) a polymerizable monomer and(c) a polymerization initiator.

Abstract: A two component polyurethane coating consisting of a principal component (A) comprising a hydroxyl group containing film-forming resin, crosslinked polymer particles and a solvent for said film-forming resin and a hardener component (B) comprising a polyisocyanate compound, which is characterized by using as the crosslinked polymer particles composite resin particles each comprising a particulate crosslinked polymer core and a number of substantially linear polymer chains coupled with said core by either chemical bonding, semi-interpenetration or both, and containing metal element in either portion of said core, said polymer chains or both of them; the solid weight ratio of said hydroxyl group containing film-forming resin to said composite resin particles being 99/1 to 40/60 and the equivalent ratio of isocyanate groups in the hardener component (B) to hydroxyl groups in the principal component (A) (if the linear polymer chains contain hydroxyl groups, the sum of said hydroxyl groups and those of the film-fo

Abstract: A two component polyurethane coating consisting of a principal component (A) comprising a hydroxyl group containing film-forming resin, crosslinked polymer particles and a solvent for said film-forming resin, and a hardener component (B) comprising a polyisocyanate compound, which is characterized by using as said crosslinked polymer particles the composite resin particles each comprising a particulate crosslinked polymer core and a number of substantially linear polymer chains coupled with said core in either way of chemical bonding, semi-interpenetration or both of them, the solid weight ratio of said hydroxyl group containing film-forming resin to said composite resin particles being 99/1 to 40/60 and the equivalent ratio of isocyanate groups in the hardener component (B) to hydroxyl groups in the principal component (A) (if the linear polymer chains contain hydroxyl groups, the sum of said hydroxyl groups and those of the hydroxyl group containing film-forming resin) being 0.5 to 2.0.