TREA

Polymer containing N-sulfoamino group, fiber formed therefrom, and magnetic recording medium containing the same

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Information

  • Patent Grant
  • 5652320
  • Patent Number
    5,652,320
  • Date Filed
    Tuesday, October 3, 1995
    29 years ago
  • Date Issued
    Tuesday, July 29, 1997
    27 years ago
Information
Abstract
The present invention provides an novel polymer having 1-2,000 equivalents of an N-sulfoamino group/10.sup.6 g of weight of the polymer.The polymer has excellent dispersibility of inorganic fine particles, hygroscopicity, and dye-affinity. The polymer provides a binder resin in which a magnetic or non-magnetic metal or metal oxide can highly be dispersed. The polymer also provides a magnetic recording medium which is excellent in electromagnetic conversion characteristic, surface smoothness, adhesion to non-magnetic substrates, and durability. The polymer provides a magnetic recording medium with improved travelling, travelling durability, signal-to-noise ratio, and drop-out. The polymer also provides a polyester fiber which has a high fiber strength and an excellent hygroscopicity and can be colored with cationic dyes.
Description
Claims
  • 1. A polymer having 1-2000 equivalent of an N-sulfoamino group/10.sup.6 g of said polymer.
  • 2. A polymer according to claim 1, wherein said polymer has 5-500 equivalent of an N-sulfoamino group/10.sup.6 g of said polymer.
  • 3. A polymer according to claim 1, wherein said polymer has a number average molecular weight of 3,000-200,000.
  • 4. A polymer according to claim 1, wherein said N-sulfoamino group is a metal sulfamate group.
  • 5. A polymer according to claim 4, wherein said metal is potassium or sodium.
  • 6. A polymer according to claim 1, wherein said polymer is one of a member selected from the group consisting of polyurethane resins, polyester resins, acrylic resins, polyamide resins, and vinyl chloride polymers.
  • 7. A polymer according to claim 1, wherein said polymer is a polyurethane resin.
  • 8. A polymer according to claim 1, wherein said polymer is a polyester resin.
  • 9. A polymer according to claim 7, wherein said polyurethane resin is obtained by a reaction of a polyol containing an N-sulfoamino group with an organic polyisocyanate.
  • 10. A polymer according to claim 9, wherein said polyol is a polyester polyol.
  • 11. A polymer according to claim 9, wherein said polyol is a polyether polyol.
  • 12. A polymer according to claim 8, wherein said polyester resin is obtained by a reaction of a polyol containing an N-sulfoamino group with a polycarboxylic acid.
  • 13. A polymer according to claim 12, wherein said polyol is a polyether polyol.
  • 14. A polymer according to claim 12, wherein said polycarboxylic acid is an aromatic polycarboxylic acid.
  • 15. A polymer according to claim 8, wherein said polyester resin is a polyester resin having a fiber-forming property obtained by a reaction of a diol containing an N-sulfoamino group with an alkylene glycol and an aromatic dicarboxylic acid.
  • 16. A fiber formed by the polymer according to claim 15.
Priority Claims (2)
Number Date Country Kind
6-272997 Oct 1994 JPX
7-078238 Mar 1995 JPX
US Referenced Citations (1)
Number Name Date Kind
4152485 Mizumura et al. May 1979
Foreign Referenced Citations (3)
Number Date Country
0465070 Jun 1991 EPX
1450949 Jul 1966 FRX
256719 Feb 1990 JPX
Non-Patent Literature Citations (3)
Entry
Santerre et al., "Microstructure of Polyurethane Ionomers Derivatized with Dodecylamine and Polyethylene Oxide in the Hard Segment", Journal of Applied Polymer Science, vol. 52, No. 4, pp. 515-523, Apr. 25, 1994.
Databas WPI, Week 7045.
European Search Report.