Styrene-based resin composite material

• US 5,082,717 A
• Filed: 11/30/1989
• Issued: 01/21/1992
• Est. Priority Date: 12/16/1988
• Status: Expired due to Fees

• Current Assignee: Idemitsu Petrochemical Co., Ltd. (Idemitsu Kosan Company Limited)
• Original Assignee: Idemitsu Petrochemical Co., Ltd. (Idemitsu Kosan Company Limited)
• Inventors: Yaguchi, Atsunori, Funaki, Keisuke
• Primary Examiner(s): SLUBY, PATRICIA
• Application Number:
  US07/443,937
• Time in Patent Office: 782 Days
• Field of Search: 428/207, 428/480, 428/913, 428/914, 428/521
• US Class Current: 428/207
• CPC Class Codes: C07F 9/65814 n = 3 or 4
• CPC Class Codes: C08J 2325/06 Polystyrene
• CPC Class Codes: C08J 2485/00 Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing atoms other than silicon, sulfur, nitrogen, oxygen, and carbon; Derivatives of such polymers
• CPC Class Codes: C08J 7/0427 with only one layer of a composition containing a polymer binder with more layers C08J7/042
• CPC Class Codes: C08J 7/043 Improving the adhesiveness of the coatings per se, e.g. forming primers adhesives in the form of films or foils characterised by the primer layers between the polymer carriers and the adhesives C09J7/50
• CPC Class Codes: C08J 7/046 Forming abrasion-resistant coatings; Forming surface-hardening coatings
• CPC Class Codes: G11B 5/702 characterised by the bonding agent
• CPC Class Codes: G11B 5/7023 containing polyesters, polyethers, silicones, polyvinyl resins, polyacrylresins or epoxy resins G11B5/7022 takes precedence
• CPC Class Codes: G11B 5/7026 Radiation curable polymers
• CPC Class Codes: G11B 5/725 containing a lubricant , e.g. organic compounds inorganic carbon protective coating G11B5/727
• CPC Class Codes: G11B 5/735 characterised by the back layer magnetic recording media substrates G11B5/739
• CPC Class Codes: G11B 5/73937 Substrates having an organic polymer comprising a ring structure
• CPC Class Codes: Y10S 428/90 Magnetic feature
• CPC Class Codes: Y10T 428/24901 including coloring matter
• CPC Class Codes: Y10T 428/31507 Of polycarbonate
• CPC Class Codes: Y10T 428/31533 Of polythioether
• CPC Class Codes: Y10T 428/3154 Of fluorinated addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31663 As siloxane, silicone or silane
• CPC Class Codes: Y10T 428/31786 Of polyester [e.g., alkyd, etc.]
• CPC Class Codes: Y10T 428/31833 Next to aldehyde or ketone condensation product or addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31837 : Including polyene monomers
• CPC Class Codes: Y10T 428/31913 : Monoolefin polymer
• CPC Class Codes: Y10T 428/3192 : Next to vinyl or vinylidene chloride polymer
• CPC Class Codes: Y10T 428/31931 : Polyene monomer-containing

Abstract

Disclosed are a styrene-based resin composite material in which a layer composed mainly of a curable phosphazene compound is formed on the surface of a molding material of a styrene-based polymer having a mainly syndiotactic configuration or a composition thereof, and also an ink ribbon in which an ink layer is provided on one side of a film of the above polymer of a composition thereof and a heat resistant lubricating layer composed mainly of the curable phosphazene compound provided on the side opposite thereto, and also a magnetic recording medium characterized in that a magnetic layer containing the curable phosphazene compound as a binder on a support composed of the above polymer or a composition thereof, a over coated layer of a magnetic recording medium which contains the curable phosphazene compound and a lubricating layer of a magnetic recording medium which contains the curable phosphazene compound.

Claims

1. An ink ribbon which comprises a stretched base film consisting essentially of a styrene-based polymer having a syndiotactic configuration, an ink layer formed on the base film and a heat resistant lubricating layer consisting essentially of a curable phosphazene compound formed on the base film at the opposite side to the ink layer.

2. An ink ribbon according to claim 1, wherein the phosphazene compound is a chain compound having a recurring unit represented by the formula:

##STR18## wherein a and b each represent a real number satisfying a>

0, b≧

0 and a+b=2;

A represents a group that can be cured by polymerization, and B represents a group that cannot be cured by polymerization; and

having a polymerization degree of 3 or more.

3. An ink ribbon according to claim 1, wherein the phosphazene compound is a cyclic compound having a recurring unit represented by the formula:

##STR19## wherein a and b each represent a real number satisfying a>

0, b≧

0 and a+b=2;

A represents a group that can be cured by polymerization, and B represents a group that cannot be cured by polymerization.

4. The ink ribbon of claim 1, wherein the phosphazene compound is a cyclic compound represented by the formula ##STR20##

5. The ink ribbon of claim 1, wherein the phosphazene compound is a cyclic compound represented by the formula ##STR21##