Thermoplastic resin film laminate and production thereof

• US 4,605,591 A
• Filed: 10/24/1984
• Issued: 08/12/1986
• Est. Priority Date: 10/27/1983
• Status: Expired due to Term

• Current Assignee: Toyoda Gosei Company Limited (Toyota Motor Corporation)
• Original Assignee: Toyoda Gosei Company Limited (Toyota Motor Corporation)
• Inventors: Nose, Katsuhiko, Makimura, Osamu, Suzuki, Hajime
• Primary Examiner(s): Herbert, Thomas J.
• Application Number:
  US06/664,199
• Time in Patent Office: 657 Days
• Field of Search: 428/480, 428/483, 428/446, 428/332, 427/412.5
• US Class Current: 428/332
• CPC Class Codes: C08J 2467/00 Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; 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 7/044 Forming conductive coatings; Forming coatings having anti-static properties
• CPC Class Codes: C08J 7/056 Forming hydrophilic coatings
• CPC Class Codes: G03C 1/7954 Polyesters
• CPC Class Codes: Y10T 428/26 Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
• CPC Class Codes: Y10T 428/31786 Of polyester [e.g., alkyd, etc.]
• CPC Class Codes: Y10T 428/31797 Next to addition polymer from unsaturated monomers

Abstract

A thermoplastic resin film laminate which comprises a thermoplastic resin film, particularly, a polyester film and a layer of a polyester resin composition provided on at least one surface of the film, said composition comprising

(A) a water insoluble polyester copolymer composed of a mixed dicarboxylic acid component containing a dicarboxylic acid having metal sulfonate group in an amount of 0.5 to 15 mol % based on all the dicarboxylic acid component and a glycol component; and

(B) inert particles; the weight ratio of (A)/(B)=100,000/0.5-3,000. Optionally, the composition can contain one or more ingredients selected from the group consisting of a water soluble silicone, a polyfunctional reactive compound, a polyethylene glycol and its derivative and an antistatic agent. The thermoplastic resin film laminate is preferably produced by so-called in-line coating.

Claims

1. A thermoplastic resin film laminate which comprises a thermolastic resin film and a layer of a polyester resin composition provided on at least one surface of the film, said composition consisting essentially of

(A) a water-insoluble polyester copolymer of a mixed dicarboxylic acid component composed of 0.5 to 15 mole% of a dicarboxylic acid having a metal sulfonate group and 85 to 99.5 mole % of aromatic dicarboxylic acid having no metal sulfonate group reacted with a glycol component;

(B) inert particles having an average particle size of 0.01 to 10 microns;

the weight ratio of (A)/(B)=100,000/0.5-3,000.

2. A thermoplastic resin film laminate according to claim 1, wherein the composition further includes one or more ingredients selected from the group consisting of (E) a water soluble silicone, (F) a polyfunctional reactive compound, (G) polyethylene glycol and its derivatives and (H) an antistatic agent;

said water soluble silicone (E) being represented by the following formula (I) or (II) or is a mixture thereof, the ratio of ethylene oxide and propylene oxide having the relation of the equation (III) and the molecular weight thereof being 500 to 20,000;

##STR13## wherein R is hydrogen or lower alkyl having 1 to 4 carbon atoms, R'"'"' is lower alkyl having 1 to 4 carbon atoms, R" is hydrogen or lower alkyl, R"'"'"' is lower alkylene having 1 to 4 carbon atoms, x and a are each 0 or an integer of 1 or more and y and b are each an integer of 1 or more.

3. A thermoplastic resin film laminate according to claim 2, wherein the composition contains water soluble silicone (E) and the weight ratio of (A)/(E) is 100/0.05 to 10.

4. A thermoplastic resin film laminate according to claim 2, wherein the composition contains (F) a polyfunctional reactive compound and the weight ratio of (A)/(F) is 100/1 to 40.

5. A thermoplastic resin film laminate according to claim 2, wherein the composition contains (G) polyethylene glycol or its derivative and the weight ratio of (A)/(G) is 100/1 to 20.

6. A thermoplastic resin film laminate according to claim 2, wherein the composition contains (H) an antistatic agent and the weight ratio of (A)/(G) is 100/0.1 to 15.

7. A thermoplastic resin film laminate according to claim 1, wherein the thermoplastic resin film is a melt extruded, unoriented or uniaxially oriented film and the resulting laminate is further uiaxially or biaxially oriented.

8. A thermoplastic resin film laminate according to claim 7 wherein the melt extruded, unoriented or uniaxially oriented film contains a lubricant in an amount of 300 ppm or less.

9. A thermoplastic resin film laminate according to claim 1, wherein the thermoplastic resin film is a polyester film.

10. A thermoplastic resin film laminate according to claim 9, wherein the polyester film is a polyethylene terephthalate film.

11. A thermoplastic resin film lamiante according to claim 1, additionally containing water soluble silicone which is represented by the following formula (I) or (II) or is a mixture thereof, the ratio of ethylene oxide and propylene oxide having the relation of the equation (III) and the molecular weight thereof being 500 to 20,000;

##STR14## wherein R is hydrogen or lower alkyl having 1 to 4 carbon atoms, R'"'"' is lower alkyl having 1 to 4 carbon atoms, R" is hydrogen or lower alkyl, R'"'"'" is lower alkylene having 1 to 4 carbon atoms, x and a are each 0 or an integer of 1 or more and y and b are each an integer of 1 or more.

12. A process for the production of a thermoplastic resin film laminate which comprises applying an aqueous dispersion of a polyester resin composition on at least one surface of a thermoplastic resin film to form a layer of polyester resin composition thereon, said aqueous dispersion consisting essentially of

(A) a water-insoluble polyester copolymer of a mixed dicarboxylic acid component composed of 0.5 to 15 mole % of a dicarboxylic acid having a metal sulfonate group and 85 to 99.5 mole % of aromatic dicarboxylic acid having no metal sulfonate group reacted with a glycol component;

(B) inert particles having an average particle size of 0.01 to 10 microns;

(C) a water soluble organic compound having a boiling point of 60°

-200°

C.; and

(D) water;

the weight ratios of (A)/(B)=100,000/0.5-3,000, of (A)/(C)=100/20-5,000 and of (C)/(D)=100/50-1,000.