US4868051A
Expired / Lapsed
US
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Adhesive composite polyester films
Assignee: Rhone Poulenc Films SA
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Filing: 1987-10-06
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Granted: 1989-09-19
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Expires: 2007-10-06
Abstract
Abstract Oriented composite polyester films, to which a wide variety of final application topcoatings are improvedly adherent, e.g., matte, photosensitive and magnetic topcoatings, comprise an oriented base film substrate (A) of a crystalline or semicrystalline polyester, the base film substrate (A) bearing an adhesion primer coating (B) on at least one of the face surfaces thereof, and the adhesion primer coating (B) comprising: (a) a crystalline, semicrystalline or crystallizable polyester; (b) a water-sensitive copolyster; and (c) an organic solvent-sensitive polyester or copolyester.
Inventors
- 👤 Pierre Grosjean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:36
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/36; B29; B29C; B29C48/00; B29C48/16; B29C48/18; B32B27/06; B32B27/08; C; C08; C08L; C08L67/00; C08L67/02; B32B2307/00; B32B2307/50; B32B2307/514; B32B2307/70; B32B2307/702; B32B2307/704; B32B2367/00; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/252; Y10T428/259; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31786; Y10T428/31794
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
83 words
An oriented composite polyester film member adapted for adhering an end application topcoating thereon, which comprises an extruded orientated base film substrate (A) comprising a crystalline or semicrystalline polyester, said base film substrate (A) bearing an adhesion primer coating (B) coextruded with the substrate (A) on at least one of the face surfaces thereof, said adhesion primer coating (B) comprising a ternary mixture of: (a) a crystalline, semicrystalline or crystallizable polyester; (b) a water-sensitive copolyester; and (c) an organic solvent-sensitive polyester or copolyester.
Claim 2
Dependent Claim
83 words
An oriented composite polyester film member adapted for adhering an end application topcoating thereon, which comprises an extruded orientated base film substrate (A) comprising a crystalline or semicrystalline polyester, said base film substrate (A) bearing an adhesion primer coating (B) coextruded with the substrate (A) on at least one of the face surfaces thereof, said adhesion primer coating (B) comprising a ternary mixture of: (a) a crystalline, semicrystalline or crystallizable polyester; (b) a water-sensitive copolyester; and (c) an organic solvent-sensitive polyester or copolyester.
Claim 3
Dependent Claim
37 words
The oriented composite polyester film as defined by claim 1, wherein the polyesters comprising said base film substrate (A) and the component (a) of the ternary mixture are insensitive to ester, ketone and halogenated hydrocarbon organic solvents.
Claim 4
Dependent Claim
39 words
The oriented composite polyester film as defined by claim 1, wherein the polyesters comprising said base film substrate (A) and the component (a) of the ternary mixture have a solubility volume below 10 -2 (cal/cm 3 ) 3/2 .
Claim 5
Dependent Claim
46 words
The oriented composite polyester film as defined by claim 1, wherein the polyesters comprising said base film substrate (A) and the component (a) of the ternary mixture comprise a homopolyester or a copolyester of terephthalic acid containing at least 80 mole % of terephthalate recurring units.
Claim 6
Dependent Claim
30 words
The oriented composite polyester film as defined by claim 4, wherein the polyesters comprising said base film substrate (A) and the component (a) of the ternary mixture comprise polyethylene terephthalate.
Claim 7
Dependent Claim
61 words
The oriented composite polyester film as defined by claim 1, wherein the copolyester of component (b) of the ternary mixture comprises a plurality of hydrophilic groups of the general formula: (-SO.sub.3).sub.n M (I) in which n is 1 or 2, and M is a hydrogen atom, an alkali metal, an alkaline earth metal, an ammonium cation, or a quaternary ammonium cation.
Claim 8
Dependent Claim
95 words
The oriented composite polyester film as defined by claim 6, wherein the water-sensitive copolyester of component (b) of the ternary mixture comprises a plurality of recurring units derived from aromatic diacids or derivatives thereof having the formula: ##STR2## in which n is 1 or 2, M is a hydrogen atom, an alkali metal, an alkaline earth metal, an ammonium cation, or a quaternary ammonium cation, Z is a polyvalent aromatic radical, X and Y are hydrocarbon radicals, esters of lower aliphatic alcohols, or acid halides, and p is an integer equal to 1 or 2.
Claim 9
Dependent Claim
30 words
The oriented composite polyester film as defined by claim 7, wherein the water-sensitive copolyester of component (b) of the ternary mixture comprises a plurality of recurring units of hydroxysulfonylisophthalic acid.
Claim 10
Dependent Claim
31 words
The oriented composite polyester film as defined by claim 8, wherein the water-sensitive copolyester of component (b) of the ternary mixture additionally comprises a plurality of recurring units of terephthalic acid.
Claim 11
Dependent Claim
40 words
The oriented composite polyester film as defined by claim 9, wherein the water-sensitive copolyester of component (b) of the ternary mixture comprises both a plurality of recurring units of terephthalic acid and a plurality of recurring units of isophthalic acid.
Claim 12
Dependent Claim
36 words
The oriented composite polyester film as defined by claim 10, wherein the number of recurring units of isophthalic acid in the water-sensitive copolyester constitutes up to 70% of the total amount of the terephthalate/isophthalate recurring units
Claim 13
Dependent Claim
54 words
The oriented composite polyester film as defined by claim 10, wherein the water-sensitive copolyester of component (b) of the ternary mixture comprises a plurality of recurring units of ethylene glycol and/or oligomers thereof having the formula HO--(CH 2 --CH 2 --O) m --H, in which m is an integer of from 2 to 10.
Claim 14
Dependent Claim
31 words
The oriented composite polyester film as defined by claim 12, wherein the amount by weight of recurring units of ethylene glycol oligomers in the water-sensitive copolyester range from 2% to 30%.
Claim 15
Dependent Claim
38 words
The oriented composite polyester film as defined by claim 10, wherein the amount of oxysulfonyl group recurring units in the water-sensitive copolyesters, based on the total amount of recurring units of like nature, ranges from 5% to 20%.
Claim 16
Dependent Claim
45 words
The oriented composite polyester film as defined by claim 10, wherein the water-sensitive copolyester of component (b) of the ternary mixture comprises from 5 to 20 mole % of recurring units of 5-sulfoisophthalic acid, based on the total amount of recurring units of dicarboxylic acids.
Claim 17
Dependent Claim
35 words
The oriented composite polyester film as defined by claim 1, wherein the organic solvent-sensitive polyester of component (c) of the ternary mixture has a solubility volume greater than 10 -2 (cal/cm 3 ) 3/2 .
Claim 18
Dependent Claim
38 words
The oriented composite polyester film as defined by claim 16, wherein the organic solvent-sensitive polyester of component (c) of the ternary mixture has a solubility volume greater than 10 -2 (cal/cm 3 ) 3/2 and is not crystallizable.
Claim 19
Dependent Claim
70 words
The oriented composite polyester film as defined by claim 17, wherein the organic solvent-sensitive polyester of component (c) of the ternary mixture has a solubility volume greater than 10 -2 (cal/cm 3 ) 3/2 and comprises a copolyester of terephthalic acid, ethylene glycol and oligomers thereof, and further comprises a plurality of recurring units of isophthalic acid and/or aliphatic dicarboxylic acids and/or alkylene diols containing at least 3 carbon atoms.
Claim 20
Dependent Claim
55 words
The oriented composite polyester film as defined by claim 18, wherein the organic solvent-sensitive polyester of component (c) of the ternary mixture has a solubility volume greater than 10 -2 (cal/cm 3 ) 3/2 and comprises a noncrystallizable copolyester containing a plurality of recurring units of terephthalic acid, isophthalic acid, ethylene glycol and neopentyl glycol.
Claim 21
Dependent Claim
52 words
The oriented composite polyester film as defined by claim 18, wherein the organic solvent-sensitive polyester of component (c) of the ternary mixture has a solubility volume greater than 10 -2 (cal/cm 3 ) 3/2 and comprises a noncrystallizable copolyester containing a plurality of recurring units of terephthalic acid, ethylene glycol and bishydroxymethylcyclohexane.
Claim 22
Dependent Claim
53 words
The oriented composite polyester film as defined by claim 1, wherein said ternary mixture comprises: (a) from 30 to 65% by weight of a crystalline, semicrystalline or crystallizable polyester; (b) from 15 to 60% by weight of a water-sensitive copolyester; and (c) from 10 to 55% by weight of an organic solvent-sensitive polyester
Claim 23
Dependent Claim
25 words
The oriented composite polyester film as defined by claim 1, wherein the thickness of said adhesion primer coating (B) range from 0.3 to 10 micrometers.
Claim 24
Dependent Claim
25 words
The oriented composite polyester film as defined by claim 1, wherein at least one adhesion primer coating (B) has an end application topcoating adhered thereto.
Claim 25
Dependent Claim
24 words
The oriented composite polyester film as defined by claim 23, said end application topcoating comprising a matte, photosensitive, diazo, magnetic, metallic or print coating.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1992-09-18 | 1993-03-20 | 1993-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-18 | 1997-03-20 | 1997-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-18 | 2001-03-20 | 2001-09-19 | $7700.00 | Window Closed / Lapsed |