Abstract: A magnetic clutch 1 having a rotor 2, an armature 3 having a friction surface 31 disposed opposite and engaged by the friction surface 21 of the rotor 2, an electromagnetic coil 4 for attracting the armature 3 to the side of the rotor 2, and a rubber hub 5 for transmitting the rotational power to driven equipment. The rubber hub 5 is composed of an outer hub 51 fixed to the armature 3, an inner hub 52 connected to the driven equipment, and a rubber part 53 disposed between the outer hub 51 and the inner hub 52. On a surface of the armature 3, a corrosion-preventive coated film is formed by electrodeposition-coating. A powder coated film 6 having a function of preventing adhesion between the armature 3 and the rubber part 53 is formed on a surface of the outer hub 51, on a surface of the inner hub 52, and on a rubber seating surface 531 of the rubber part 53.

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.