Abstract: Disclosed is a magnetic recording medium which comprises magnetic particles; a phosphate represented by the formula: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 may be the same or different and each represent R.sup.4 O--CH.sub.2 O--.sub.n (wherein R.sup.4 is an alkyl group having 8 to 20 carbon atoms or an alkylphenyl group whose alkyl group moiety has 8 to 20 carbon atoms, and n is an integer of 2 to 10) or a group of HO--, with the proviso that at least one of R.sup.1, R.sup.2 and R.sup.3 is a group of R.sup.4 O--CH.sub.2 CH.sub.2 O--.sub.n (wherein R.sup.4 and n are as defined above); a lecithin; and a binder.

Abstract: Disclosed is a magnetic recording medium which comprises; a substrate; a first magnetic layer applied on the surface of the substrate and having an easy axis of magnetization in the in-plane direction of the substrate; and a second magnetic layer applied on the surface of the first magnetic layer, formed of ferrite series powder represented by the formula;AO.n(Fe.sub.1-m M.sub.m).sub.2 O.sub.3(wherein A is at least one metallic element selected from the group consisting of Ba, Sr, Pb and Ca; M is at least one substituent component selected from the group consisting of Co, Ti, Ni, Mn, Cu, Zn, In, Ge and Nb; m is 0.08 to 0.2; and n is 5.4 to 6.0), and having an easy axis of magnetization in a direction perpendicular to the plane of the substrate; said first magnetic layer having a surface resistivity of 1.times.10.sup.2 to 1.times.10.sup.8 .OMEGA.. In another embodiment, a conductive layer having a surface resistivity of 1.times.10.sup.7 .OMEGA.

Abstract: An information recording medium is manufactured while placing, in a reaction region, a substrate on the surface of which is recorded information in the form of an indented pattern and the surface of which exhibits electrical conductivity. A plasma generating gas is introduced into a plasma generating region which is isolated from the reaction region. The plasma generating gas is activated by microwaves to generate a plasma. The plasma from the plasma generating region and an organic monomer are introduced into the reaction region independently of each other to initiate polymerization of the organic monomer. A dielectric layer of a polymer of the monomer and of a uniform, small thickness is formed along the indented pattern of the target.

Abstract: An unsaturated polyester resin composition comprises a mixture of a particular unsaturated polyester, an unsaturated monomer copolymerizable with the unsaturated polyester and polystyrene having a certain particle size in specific amounts. The unsaturated polyester is a reaction product of a dicarboxylic acid component containing .alpha.,.beta.-unsaturated dicarboxylic acid with a glycol component containing certain amounts of neopentyl glycol and 2,2-bis(4-hydroxycyclohexyl) propane. The resin composition exhibits favorable properties such as low shrinkage upon curing, good colorability and good storage stability, and is useful particularly in formulating premixed molding compounds.