Abstract: A magnetic recording tape includes an elongated substrate, a magnetic coating disposed on a first side of the substrate, and a backside coated on a second side of the substrate. The magnetic coating includes an exposed magnetic recording layer and a support layer deposited on the substrate between the substrate and the exposed magnetic recording layer. The backside is coated on the substrate opposite the first side and has a roughness average Ra of less than about 18 nm and a friction force of less than about 70 g-force.

Abstract: A purified polyurethane crosslinking agent and a magnetic recording medium comprising a substrate having coated thereon a front coat and a backcoat, said front coat comprising at least a magnetic coating and at least one of said front coat or said backcoat containing at least polymeric binder with pendant hydroxyl groups and a purified polyisocyanate crosslinking agent therefor comprising at least one diisocyanate compound adduct selected from the group consisting of adducts having a formula wherein: each A moiety is independently a divalent, organic linking group; and X is a divalent organic linking group, and a diisocyanate compound adduct of the formula wherein each A moiety is as defined above, and Y is a trivalent organic linking group.

Abstract: A magnetic recording medium including a substrate, a magnetic side, and a backside. The substrate defines a first surface and a second surface opposite the first surface. The magnetic side if formed over the first surface of the substrate and defines a recording surface. The backside is coated on the second surface of the substrate and is configured to decrease embossment of the recording surface. The backside defines a backside surface opposite the substrate. The backside surface having a skew less than about 0.5 and a kurtosis less than about 4.0.

Abstract: A magnetic recording tape for data storage comprising a non-magnetic substrate having a front side and a backside, a magnetic layer formed over the front side of the substrate containing magnetic pigment particles, and a binder system therefor; the magnetic particles typically have a coercivity of at least about 2000 Oe. The substrate also has a backside coating layer formed over the backside surface of the substrate comprising at least one non-magnetic pigment and at least one binder therefor; the pigment is present in a range of from about 49% to about 55%, and the backside coating exhibits compressibility.

Abstract: A magnetic recording medium including a substrate, a magnetic side, and a backside. The substrate defines a first surface and a second surface opposite the first surface. The magnetic side is formed over the first surface of the substrate and defines a recording surface. The backside is coated on the second surface of the substrate and is configured to decrease embossment of the recording surface. The backside defines a backside surface opposite the substrate. The backside surface having a skew less than about 0.5 and a kurtosis less than about 4.0.

Abstract: A polymeric binder system useful for a magnetic recording medium, the polymeric binder system and comprising a hard resin component comprising a nonhalogenated vinyl copolymer and a soft resin component comprising a polyurethane having a phosphonate diester group. The binder system is useful for preparing the magnetic layer and/or backside coating of magnetic recording media, in order to provide media that demonstrate an improved combination of such as modulus, Tg, and smoothness.

Abstract: A magnetic recording medium comprising a support having two major surfaces, a magnetic layer provided on one major surface of the support, and a backside coating provided on the other major surface of the support wherein the backside coating comprises nonmagnetic, multicomponent particles dispersed in a polymeric binder. The nonmagnetic, multicomponent particles are comprised of a first component having a Mohs hardness equal to or less than 7 and a second component having a Mohs hardness greater than 7.

Abstract: Magnetic media having a backside coating containing polymeric acrylate particles are provided. The polymeric acrylate particles are prepared from about 50-98 parts by weight of at least one kind of polymerizable di(meth)acrylate monomer of the formula:CH.sub.2 .dbd.CR.sup.1 C(O)O--X--O(O)CCR.sup.1 .dbd.CH.sub.2wherein each R.sup.1 is independently H (for diacrylates) or CH.sub.3 (for dimethacrylates) and X is a divalent branched or unbranched aliphatic or aromatic linking group; and about 2-50 parts by weight of at least one kind of polymerizable hydroxyl-containing monomer.

Abstract: A polymeric binder system useful for a magnetic recording medium, the polymeric binder system and comprising a hard resin component comprising a nonhalogenated vinyl copolymer and a soft resin component comprising a polyurethane having a phosphonate diester group. The binder system is useful for preparing the magnetic layer and/or backside coating of magnetic recording media, in order to provide media that demonstrate an improved combination of such as modulus, Tg, and smoothness.