Undercoating composition for polyesters containing epoxy compounds

• US 4,072,639 A
• Filed: 03/05/1976
• Issued: 02/07/1978
• Est. Priority Date: 03/07/1975
• Status: Expired due to Term

• Current Assignee: Fuji Photo Film Co Limited (Fujifilm Holdings Corporation)
• Original Assignee: Fuji Photo Film Co Limited (Fujifilm Holdings Corporation)
• Inventors: Sera, Hidefumi, Yamaguchi, Teruo
• Primary Examiner(s): Woodberry, Edward M.
• Application Number:
  US05/664,224
• Time in Patent Office: 704 Days
• Field of Search: 260/29.2 EP, 260/6, 428/413, 96/87
• US Class Current: 523/411
• CPC Class Codes: G03C 1/91 characterised by subbing layers or subbing means
• CPC Class Codes: Y10T 428/31511 Of epoxy ether

Abstract

An undercoating composition for polyesters which contains a compound having two or more epoxy groups in its molecule and a molecular weight of about 1,000 or less.

Claims

1. An undercoating composition for photographic polyester film wherein the polyester is a condensation product of a dibasic aromatic acid and a glycol which contains (1) a compound having two or more epoxy groups in its molecule and a molecular weight of about 1,000 or less, said compound being represented by general formula (I):

##STR2## wherein R₁ to R₅, which may be the same or different, represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, n represents an integer of 2 to 6 and A represents a linear or cyclic group having n nitrogen atoms or n oxygen atoms where the nitrogen atoms or oxygen atoms are directly bonded to the glycidyl group, a 5- or 6-membered heterocyclic ring having two or more active nitrogen atoms in the ring, a nitrogen atom, a phosphate group or a sulfate group; and

(2) water as a primary solvent or sole solvent.

2. The undercoating composition as claimed in claim 1, which further comprises a surfactant in an amount of about 0.01 to about 0.2% by weight based on a total amount of the undercoating composition.

3. The undercoating composition as claimed in claim 1, which further contains a hydrophilic organic colloid in an amount of about 0.01 to about 2.5% by weight based on a total amount of the undercoating composition.

4. The undercoating composition as claimed in claim 1, which further comprises a swelling agent for polyesters in an amount of about 0.5 to about 15% by weight based on a total amount of the undercoating composition.

5. The undercoating composition of claim 1 wherein A represents a linear or cyclic group having n nitrogen atoms.

6. The undercoating composition of claim 1 wherein said compound represented by general formula (I) is obtained from olefins through ozone oxydation or peroxydation or obtained by the reaction of alcohols and epihalohydrins or methylepihalohydrins.