Biaxially stretched polyester film comprising a coating layer containing a salt of a sulfonic acid type polymer

Patent 5306606 Issued on April 26, 1994. Estimated Expiration Date:

December 23, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Novel oriented polyester film composites
Patent #: 4880700
Issued on: 11/14/1989
Inventor: Charmot, et al.

Polyester film
Patent #: 4908277
Issued on: 03/13/1990
Inventor: Tsunashima, et al.

Antistatic thermoplastic polyester resin composition
Patent #: 5045580
Issued on: 09/03/1991
Inventor: Kitamura

Plastic film with antistatic layer and silver halide photographic light-sensitive material using the same Patent #: 5079136
Issued on: 01/07/1992
Inventor: Tachibana, et al.

Inventors

Assignee

Konica Corporation

Application

No. 813883 filed on 12/23/1991

US Classes:

430/533, Polyester or polycarbonate428/482, Of cross-linked polyester428/483, Next to addition polymer from unsaturated monomers428/516, Monoolefin polymer428/520, Ester, halide or nitrile of addition polymer428/910, PRODUCT WITH MOLECULAR ORIENTATION430/528, Ammonium salt430/529, Organic carboxylic, sulfur or phosphorus acid or salt430/535, Polymer of unsaturated ester or halide430/536Polymer of unsaturated monomer

Examiners

Primary: Thibodeau, Paul J.
Assistant: Le, H. Thi

Attorney, Agent or Firm

Bierman; Jordan B.

International Class

B32B 027/06

Foreign Application Priority Data

1990-12-31 JP

Abstract

Disclosed is a biaxially stretched polyester film which comprises a polyester film and a coating layer composed of a resin composition comprising (A) an acrylic polymer and/or (B) a polyester copolymer and at least (C) a polymer containing a monomer having a sulfonic acid group neutralized with an organic amine in its recurring unit or (D) a polymer containing a monomer having a sulfonic acid group neutralized with ammonium on at least one surface of the polyester film.