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US4252940A
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Copolyester adhesives
Assignee: Eastman Chemical Co
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Filing: 1979-10-02
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Granted: 1981-02-24
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Expires: 1999-10-02
Abstract
Abstract Copolyester adhesives are disclosed which are derived from at least 40 mol percent terephthalic acid, up to about 60 mol percent of another dicarboxylic acid selected from isophthalic, succinic, adipic, and glutaric, and a blend of 1,6-hexanediol and diethylene glycol. These copolyesters are useful as adhesives, and especially useful as fusible interlining adhesives.
Inventors
- 👤 Bobby J. Sublett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:38
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/04; B32B7/12; C; C08; C08G; C08G63/00; C08G63/66; C08G63/668; C08G63/672; B32B5/00; B32B5/22; B32B5/24; C09; C09J; C09J167/00; C09J167/02; C09J167/025; B32B37/00; B32B37/12; B32B37/1207; B32B2037/1238
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
85 words
A copolyester of an acid moiety and a glycol moiety, at least 40 mol percent of said acid moiety being a terephthalic acid moiety, said glycol moiety being about 10 to about 90 mol percent of a 1,6-hexanediol moiety and about 90 to about 10 mol percent of a diethylene glycol moiety, said copolyester having a crystalline melting point of about 40°-130° C., a glass transition temperature of about -10° to about 30° C. and a heat of fusion of about 1-10 calories per gram.
Claim 2
Dependent Claim
85 words
A copolyester of an acid moiety and a glycol moiety, at least 40 mol percent of said acid moiety being a terephthalic acid moiety, said glycol moiety being about 10 to about 90 mol percent of a 1,6-hexanediol moiety and about 90 to about 10 mol percent of a diethylene glycol moiety, said copolyester having a crystalline melting point of about 40°-130° C., a glass transition temperature of about -10° to about 30° C. and a heat of fusion of about 1-10 calories per gram.
Claim 3
Dependent Claim
22 words
A copolyester according to claim 1 wherein the crystallization half time is less than about 10 minutes at the maximum crystallization temperature.
Claim 4
Dependent Claim
68 words
A copolyester according to claim 1 wherein the terephthalic acid moiety is present in an amount of about 75-85 mol % and about 25-15 mol percent of said acid moiety being selected from moieties of isophthalic, succinic, adipic and glutaric, the 1,6-hexanediol moiety is present in an amount of about 75-85 mol % and the diethylene glycol moiety is present in an amount of about 25-15 mol %.
Claim 5
Dependent Claim
15 words
A copolyester according to claim 1 wherein the crystalline melting point is about 80°-115° C.
Claim 6
Dependent Claim
18 words
A copolyester according to claim 1 wherein the ΔH f is greater than about 3.0 calories per gram.
Claim 7
Dependent Claim
64 words
A copolyester derived essentially from at least 40 mol percent terephthalic acid, about 10 to about 90 mol percent 1,6-hexanediol and about 90 to about 10 mol percent diethylene glycol, said copolyester having a crystalline melting point of about 80°-115° C., a glass transition temperature of about -10° to about 30° C. and a heat of fusion of at least 3.0 calories per gram.
Claim 8
Dependent Claim
64 words
A copolyester derived essentially from at least 40 mol percent terephthalic acid, about 10 to about 90 mol percent 1,6-hexanediol and about 90 to about 10 mol percent diethylene glycol, said copolyester having a crystalline melting point of about 80°-115° C., a glass transition temperature of about -10° to about 30° C. and a heat of fusion of at least 3.0 calories per gram.
Claim 9
Dependent Claim
67 words
A fusible interlining adhesive comprising a copolyester derived from at least 40 mol percent terephthalic acid, about 10 to about 90 mol percent 1,6-hexanediol and about 90 to about 10 mol percent diethylene glycol, said copolyester having a crystalline melting point of about 40°-130° C., a glass transition temperature of about -10° to about 30° C. and a heat of fusion of about 1-10 calories per gram.
Claim 10
Dependent Claim
67 words
A fusible interlining adhesive comprising a copolyester derived from at least 40 mol percent terephthalic acid, about 10 to about 90 mol percent 1,6-hexanediol and about 90 to about 10 mol percent diethylene glycol, said copolyester having a crystalline melting point of about 40°-130° C., a glass transition temperature of about -10° to about 30° C. and a heat of fusion of about 1-10 calories per gram.
Claim 11
Dependent Claim
13 words
A fusible interlining adhesive in powder form comprising the copolyester of claim 7.
Claim 12
Dependent Claim
68 words
A fusible interlining adhesive comprising a copolyester derived from at least 40 mol percent terephthalic acid, about 10 to about 90 mol percent 1,6-hexanediol and about 90 to about 10 mol percent diethylene glycol, said copolyester having a crystalline melting point of about 80°-115° C., a glass transition temperature of about -10° to about 30° C. and a heat of fusion of at least 3.0 calories per gram.
Claim 13
Dependent Claim
68 words
A fusible interlining adhesive comprising a copolyester derived from at least 40 mol percent terephthalic acid, about 10 to about 90 mol percent 1,6-hexanediol and about 90 to about 10 mol percent diethylene glycol, said copolyester having a crystalline melting point of about 80°-115° C., a glass transition temperature of about -10° to about 30° C. and a heat of fusion of at least 3.0 calories per gram.
Claim 14
Dependent Claim
13 words
A fusible interlining adhesive in powder form comprising the copolyester of claim 9.
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) | 1984-02-24 | 1984-08-25 | 1985-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-24 | 1988-08-25 | 1989-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-24 | 1992-08-25 | 1993-02-24 | $7700.00 | Window Closed / Lapsed |