US3931073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot melt compositions
Assignee: Eastman Kodak Co
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Filing: 1974-07-22
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Granted: 1976-01-06
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Expires: 1994-07-22
Abstract
Abstract Hot melt compositions having very low melt viscosity and high adhesive strength, especially to metals, are disclosed. The compositions include a copolyester derived from a glycol having from 2 to 10 carbon atoms, terephthalic acid and dimer acid, blended with an aliphatic hydrocarbon having a molecular weight of from about 250 to about 1200. The composition may be modified if desired by adding a small amount of a vinyl aromatic polymer.
Inventors
- 👤 Winston J. Jackson, Jr.
- 👤 William R. Darnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:26
CPC Classifications
C; C09; C09J; C09J167/00; C09J167/02; C08; C08L; C08L2666/00; C08L2666/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31786; Y10T428/3179
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
105 words
An adhesive composition comprising A. from about 50 to about 95 weight percent of a copolyester of 1. a glycol component containing at least about 80 mole percent of a glycol having from 2 to 10 carbon atoms, and 2. an acid component which is at least about 48 mole percent of an aromatic dicarboxylic acid having from 8 to 20 carbon atoms or an ester forming derivative thereof, and from about 5 to about 40 mole percent dimer acid, and B. from about 50 to about 5 weight percent of an aliphatic hydrocarbon having a molecular weight of from about 250 to about 1200.
Claim 2
Dependent Claim
105 words
An adhesive composition comprising A. from about 50 to about 95 weight percent of a copolyester of 1. a glycol component containing at least about 80 mole percent of a glycol having from 2 to 10 carbon atoms, and 2. an acid component which is at least about 48 mole percent of an aromatic dicarboxylic acid having from 8 to 20 carbon atoms or an ester forming derivative thereof, and from about 5 to about 40 mole percent dimer acid, and B. from about 50 to about 5 weight percent of an aliphatic hydrocarbon having a molecular weight of from about 250 to about 1200.
Claim 3
Dependent Claim
44 words
An adhesive composition according to claim 1 wherein said polyester is present in an amount of from about 65 to about 80 percent by weight and said aliphatic hydrocarbon is present in an amount of from about 35 to about 20 percent by weight.
Claim 4
Dependent Claim
15 words
An adhesive composition according to claim 1 wherein said aromatic dicarboxylic acid is terephthalic acid.
Claim 5
Dependent Claim
14 words
An adhesive composition according to claim 1 wherein the I.V. is at least 0.5.
Claim 6
Dependent Claim
24 words
An adhesive composition according to claim 1 wherein the dimer acid content of said polyester is from about 15 to about 30 mole percent.
Claim 7
Dependent Claim
24 words
An adhesive composition according to claim 1 wherein the dimer acid content of said polyester is from about 15 to about 25 mole percent.
Claim 8
Dependent Claim
15 words
An adhesive composition according to claim 1 wherein said glycol is 1,4-butanediol or ethylene glycol.
Claim 9
Dependent Claim
22 words
An adhesive composition according to claim 1 wherein said aliphatic hydrocarbon has a molecular weight of from about 400 to about 800.
Claim 10
Dependent Claim
14 words
An adhesive composition according to claim 1 wherein said aliphatic hydrocarbon is mineral oil.
Claim 11
Dependent Claim
28 words
An adhesive composition according to claim 1 having from about 5 to about 15 percent, based on the total weight of the blend, of a vinyl aromatic hydrocarbon.
Claim 12
Dependent Claim
14 words
An adhesive composition according to claim 10 wherein said vinyl aromatic hydrocarbon is polystyrene.
Claim 13
Dependent Claim
104 words
An adhesive composition comprising A. a copolyester of 1. a glycol component containing at least about 80 mole percent of a glycol having from 2 to 10 carbon atoms, and 2. an acid component which is at least about 48 mole percent terephthalic acid or an ester forming derivative thereof, and from about 15 to about 25 mole percent dimer acid, B. from about 35 to about 20 weight percent of an aliphatic hydrocarbon having a molecular weight of from about 400 to about 800, and C. from about 5 to about 15%, based on the combined weight of (A) and (B) of polystyrene.
Claim 14
Dependent Claim
104 words
An adhesive composition comprising A. a copolyester of 1. a glycol component containing at least about 80 mole percent of a glycol having from 2 to 10 carbon atoms, and 2. an acid component which is at least about 48 mole percent terephthalic acid or an ester forming derivative thereof, and from about 15 to about 25 mole percent dimer acid, B. from about 35 to about 20 weight percent of an aliphatic hydrocarbon having a molecular weight of from about 400 to about 800, and C. from about 5 to about 15%, based on the combined weight of (A) and (B) of polystyrene.
Claim 15
Dependent Claim
11 words
A substrate coated with an adhesive composition according to claim 1.
Claim 16
Dependent Claim
11 words
A substrate coated with the adhesive composition according to claim 12.
Claim 17
Dependent Claim
14 words
A pair of substrates bonded together with an adhesive composition according to claim 1.
Claim 18
Dependent Claim
14 words
A pair of substrates bonded together with an adhesive composition according to claim 12.
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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) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |