US4481238A
Expired / Lapsed
US
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Bonding compositions and shaped articles utilizing the bonding compositions
Assignee: Eastman Chemical Co
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Filing: 1983-05-19
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Granted: 1984-11-06
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Expires: 2003-05-19
Abstract
Abstract Bonding compositions for bonding polyesters or copolyesters to poly(vinyl alcohol) or copolymers thereof, the composition comprising a poly(esteramide) having an inherent viscosity of at least 0.45 dl/g, said poly(esteramide) containing repeating units from at least 80 mol percent of a dicarboxylic acid selected from pimelic, azelaic, sebacic acid or combinations thereof and optionally up to 20 mol percent of a second linear aliphatic dicarboxylic acid having at least four carbon atoms connected linearly between the two acid groups or an aromatic dicarboxylic acid; repeating units from 5 mol percent to 20 mol percent of 1,2-ethanediamine; and repeating units from 95 to 80 mol percent of a glycol selected from ethylene glycol, 1,4-butanediol, 1,4-cyclohexanedimethanol or combinations thereof. Also disclosed are shaped articles comprising a polyester polymer layer and a poly(vinyl alcohol) layer, the layers being bonded together with bonding compositions of this invention.
Inventors
- 👤 David R. Fagerburg
- 👤 Freddie A. Shepherd
- 👤 Benny W. Wright
- 👤 I. Daniel Sand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:01
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/36; B32B27/06; B32B27/08; B32B1/00; B32B1/08; B32B27/30; B32B27/306; C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/16; C08J; C08J5/00; C08J5/12; C08J5/124; C09; C09J; C09J177/00; C09J177/12; C09J179/00; B32B2307/00; B32B2307/70; B32B2307/724; B32B2307/7242; B32B2367/00; B32B2439/00; B32B2439/40; B32B2439/60; B32B2597/00; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1379; Y10T428/1383; Y10T428/31504; Y10T428/31725; Y10T428/31736; Y10T428/3175; Y10T428/31757; Y10T428/31786
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
120 words
A bonding composition for bonding polyesters and copolyesters to poly(vinyl alcohol) and copolymers thereof, said composition comprising a poly(esteramide) having an inherent viscosity of at least 0.45 dl/g, said poly(esteramide) containing (1) repeating units from at least 80 mol percent of a dicarboxylic acid selected from pimelic, azelaic, sebacic acid or combinations thereof and optionally up to 20 mol percent of a second linear aliphatic dicarboxylic acid having at least four carbon atoms connected linearly between the two acid groups or an aromatic discarboxylic acid; (2) repeating units from 5 mol percent to 20 mol percent of 1,2-ethanediamine, and (3) repeating units from 95 to 80 mol percent of a glycol selected from ethylene glycol, 1,4-butanediol, 1,4-cyclohexanedimethanol or combinations thereof.
Claim 2
Dependent Claim
120 words
A bonding composition for bonding polyesters and copolyesters to poly(vinyl alcohol) and copolymers thereof, said composition comprising a poly(esteramide) having an inherent viscosity of at least 0.45 dl/g, said poly(esteramide) containing (1) repeating units from at least 80 mol percent of a dicarboxylic acid selected from pimelic, azelaic, sebacic acid or combinations thereof and optionally up to 20 mol percent of a second linear aliphatic dicarboxylic acid having at least four carbon atoms connected linearly between the two acid groups or an aromatic discarboxylic acid; (2) repeating units from 5 mol percent to 20 mol percent of 1,2-ethanediamine, and (3) repeating units from 95 to 80 mol percent of a glycol selected from ethylene glycol, 1,4-butanediol, 1,4-cyclohexanedimethanol or combinations thereof.
Claim 3
Dependent Claim
26 words
Bonding composition of claim 1 wherein said repeating units from pimelic, azelaic or sebacic acid are present in the amount of 85 to 100 mol percent.
Claim 4
Dependent Claim
27 words
Bonding composition of claim 1 wherein said repeating units from a dicarboxylic acid are from azelaic acid and are present in the amount of 100 mol percent.
Claim 5
Dependent Claim
22 words
Bonding composition of claim 1 wherein said repeating units from ethanediamine are present in the amount of 5 to 15 mol percent.
Claim 6
Dependent Claim
27 words
Bonding composition of claim 1 wherein said repeating units from a glycol are from 1,4-butanediol and are present in the amount of 95 to 85 mol percent.
Claim 7
Dependent Claim
23 words
Shaped article comprising a polyester polymer layer and a poly(vinyl alcohol) layer, said layers being bonded together with the composition of claim 1.
Claim 8
Dependent Claim
25 words
Shaped article of claim 6 wherein said vinyl alcohol polymer is an ethylene-vinyl alcohol copolymer having an ethylene content of 30 to 50 mol percent.
Claim 9
Dependent Claim
12 words
Shaped article of claim 6 wherein said article is an oriented film.
Claim 10
Dependent Claim
12 words
Oriented shaped article of claim 6 wherein said article is a bottle.
Claim 11
Dependent Claim
75 words
Oriented shaped article of claim 6 wherein said article is a beverage bottle having an outer layer comprising poly(ethylene terephthalate) or a copolymer thereof, a barrier layer comprising a copolymer of ethylene-vinyl alcohol and an inner layer comprising poly(ethylene terephthalate) or a copolymer thereof, said layers being bonded together by tie layers of the composition of claim 1 disposed between said outer layer and said barrier layer and said inner layer and said barrier layer.
Claim 12
Dependent Claim
68 words
Shaped article comprising a coextruded tubular structure having an outer layer comprising poly(ethylene terephthalate) or copolymers thereof, a barrier layer comprising a copolymer of ethylene-vinyl alcohol and an inner layer comprising poly(ethylene terephthalate) or copolymers thereof, said layers being bonded together by a tie layer of the composition of claim 1 disposed between said outer layer and said barrier layer and said inner layer and said barrier layer.
Claim 13
Dependent Claim
11 words
Shaped article of claim 11 wherein said article is a parison.
Claim 14
Dependent Claim
48 words
Shaped article of claim 6 wherein said polyester polymer layer is selected from poly(ethylene terephthalate), poly(ethylene terephthalate) modified with up to about 50 mol percent of aliphatic glycols containing 3-12 carbon atoms or up to about 50 mol percent of an aliphatic or aromatic diacid or combinations thereof.
Claim 15
Dependent Claim
23 words
Shaped article of claim 6 wherein said polyester polymer layer is modified up to about 15 mol percent of said glycols and acids.
Claim 16
Dependent Claim
24 words
Shaped articles of claim 6 wherein said polyester polymer layer comprises a copolymer containing repeating units from 1,4-cyclohexanedicarboxylic acid, 1,4-cyclohexanedimethanol and poly(tetramethylene oxide) glycol.
Claim 17
Dependent Claim
13 words
Shaped article of claim 6 wherein said polyester polymer layer is poly(1,4-cyclohexylenedimethylene terephthalate).
Claim 18
Dependent Claim
36 words
Shaped article of claim 16 wherein said poly(1,4-cyclohexylenedimethylene terephthalate) is modified with up to about 50 mol percent of an aliphatic diol containing 2 to 12 carbon atoms or aliphatic or aromatic diacids or combinations thereof.
Claim 19
Dependent Claim
34 words
Shaped article of claim 16 wherein said poly(1,4-cyclohexylenedimethylene terephthalate) is modified with up to about 15 mol percent of an aliphatic diol containing 2-12 carbon atoms or aliphatic or aromatic acids or combinations thereof.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-06 | 1988-05-07 | 1988-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-06 | 1992-05-07 | 1992-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-06 | 1996-05-07 | 1996-11-06 | $7700.00 | Window Closed / Lapsed |