US3669921A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolyester melt adhesive
Assignee: Eastman Kodak Co
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Filing: 1971-02-08
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Granted: 1972-06-13
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Expires: 1991-02-08
Abstract
Abstract Copolyesters useful as melt adhesives in the bonding of fabrics, metal, glass, wood, rubber, plastic sheets and other products to produce a bond which will resist the action of heat, steam, dry cleaning solvents and the like, said copolyester being derived from (1) terephthalic acid, (2) adipic acid, (3) ethylene glycol, and (4) 1,4-butanediol or derivatives of these four components. These copolyesters are advantageously improved by the incorporation therein of specific amounts of either sodium stearate or titanium dioxide.
Inventors
- 👤 Joseph W Droke
- 👤 James E Hataway
- 👤 Nicholas C Russin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:05
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/181; C08G63/183; C09; C09J; C09J167/00; C09J167/02; C08L; C08L2666/00; C08L2666/28; C08L2666/54
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
31 words
The composition of claim 1 containing about 0.10-2.0 weight percent based on the weight of the copolyester of an additive selected from the group consisting of titanium dioxide and sodium stearate.
Claim 2
Dependent Claim
5 words
adipic acid or derivatives thereof;
Claim 3
Dependent Claim
6 words
ethylene glycol or derivatives thereof; and
Claim 4
Dependent Claim
11 words
The composition of claim 1 bonded to at least one substrate.
Claim 5
Dependent Claim
11 words
The composition of claim 2 bonded to at least one substrate.
Claim 6
Dependent Claim
106 words
1,4-butanediol or derivatives thereof, wherein the acid components and the diol components are present in a 1:1 molar ratio, said copolyester having a mole ratio of terephthalic acid to adipic acid within the range of about 60:40 to about 80:20, a mole ratio of ethylene glycol to 1,4-butanediol within the range of about 60:40 to about 80:20, a softening point within the range of about 80* - 160* C., and an inherent viscosity of at least 0.5 as measured at 25* C. using 0.25 grams of copolyester per 100 ml. of a solvent consisting of 60 percent by weight phenol and 40 percent by weight tetrachloroethane.
Claim 7
Dependent Claim
26 words
The composition of claim 1 wherein the softening point is within the range of 110* - 140* C. and the inherent viscosity is at least 0.7.
Claim 8
Dependent Claim
30 words
The composition of claim 1 wherein the mole ratio of terephthalic acid to adipic acid is about 60:40 and the mole ratio of ethylene glycol to 1,4-butanediol is about 60:40.
Claim 9
Dependent Claim
31 words
The composition of claim 6 containing about 0.10-2.0 weight percent based on the weight of the copolyester of an additive selected from the group consisting of titanium dioxide and sodium stearate.
Claim 10
Dependent Claim
20 words
The composition of claim 6 wherein the softening point is about 130* C. and the inherent viscosity is about 0.8.
Claim 11
Dependent Claim
20 words
The composition of claim 7 wherein the softening point is about 130* C. and the inherent viscosity is about 0.8.
Claim 12
Dependent Claim
11 words
The composition of claim 6 bonded to at least one substrate.
Claim 13
Dependent Claim
11 words
The composition of claim 7 bonded to at least one substrate.
Claim 14
Dependent Claim
31 words
The composition of claim 1 in which the mole ratio of terephthalic acid to adipic acid is about 75:25 and the mole ratio of ethylene glycol to 1,4-butanediol is about 75:25.
Claim 15
Dependent Claim
31 words
The composition of claim 12 containing about 0.10-2.0 weight percent based on the weight of the copolyester of an additive selected from the group consisting of titanium dioxide and sodium stearate.
Claim 16
Dependent Claim
24 words
The composition as defined by claim 12 wherein the softening point is about 140* C. and the inherent viscosity is at least about 0.8.
Claim 17
Dependent Claim
11 words
The composition of claim 12 bonded to at least one substrate.
Claim 18
Dependent Claim
11 words
The composition of claim 13 bonded to at least one substrate.
Claim 19
Dependent Claim
31 words
The composition of claim 1 in which the mole ratio of terephthalic acid to adipic acid is about 80:20 and the mole ratio of ethylene glycol to 1,4-butanediol is about 80:20.
Claim 20
Dependent Claim
31 words
The composition of claim 17 containing about 0.10-2.0 weight percent based on the weight of the copolyester of an additive selected from the group consisting of titanium dioxide and sodium stearate.
Claim 21
Dependent Claim
22 words
A composition as defined by claim 17 wherein the softening point is about 150* C. and the inherent viscosity is about 1.16.
Claim 22
Dependent Claim
11 words
The composition of claim 17 bonded to at least one substrate.
Claim 23
Dependent Claim
11 words
The composition of claim 18 bonded to at least one substrate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |