US4207220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat curable hot-melt adhesives containing modified polyethylene
Assignee: Eastman Chemical Co
•
Filing: 1978-09-01
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Granted: 1980-06-10
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Expires: 1998-09-01
Abstract
Abstract The hot-melt adhesives of the present invention comprise a blend of at least one modified polyethylene resin, and at least one rosin ester. This hot-melt adhesive has a novel combination of properties and crosslinks to provide improved bond strength.
Inventors
- 👤 Darryl A. Godfrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:15
CPC Classifications
C; C09; C09J; C09J123/00; C09J123/26; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/26; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31641; Y10T428/3167; Y10T428/31674
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
77 words
An adhesive composition capable of being used as a hot melt adhesive wherein said adhesive composition consists essentially of a blend of (a) about 90 to 50 percent by weight of at least one modified polyethylene having an acid number of at least 5 prepared by reacting polyethylene with a member selected from the group consisting of unsaturated polycarboxylic acid or anhydride, (b) about 10 to 50 percent by weight of at least one rosin ester resin.
Claim 2
Dependent Claim
77 words
An adhesive composition capable of being used as a hot melt adhesive wherein said adhesive composition consists essentially of a blend of (a) about 90 to 50 percent by weight of at least one modified polyethylene having an acid number of at least 5 prepared by reacting polyethylene with a member selected from the group consisting of unsaturated polycarboxylic acid or anhydride, (b) about 10 to 50 percent by weight of at least one rosin ester resin.
Claim 3
Dependent Claim
21 words
An adhesive composition according to claim 1 wherein said rosin ester resin is at least one ester of rosin and pentaerythritol.
Claim 4
Dependent Claim
21 words
An adhesive composition according to claim 1 wherein said rosin ester resin is at least one ester of rosin and glycerol.
Claim 5
Dependent Claim
19 words
An adhesive composition according to claim 1 wherein said rosin ester resin is at least one hydrogenated rosin ester.
Claim 6
Dependent Claim
19 words
An adhesive composition according to claim 1 wherein said rosin ester resin is at least one methylated rosin ester.
Claim 7
Dependent Claim
20 words
An adhesive composition of claim 1 wherein said modified polyethylene has an acid number of about 10 to about 40.
Claim 8
Dependent Claim
21 words
An adhesive composition according to claim 6 wherein said rosin ester resin is at least one ester of rosin and pentaerythritol.
Claim 9
Dependent Claim
21 words
An adhesive composition according to claim 6 wherein said rosin ester resin is at least one ester of rosin and glycerol.
Claim 10
Dependent Claim
19 words
An adhesive composition according to claim 6 wherein said rosin ester resin is at least one hydrogenated rosin ester.
Claim 11
Dependent Claim
19 words
An adhesive composition according to claim 6 wherein said rosin ester resin is at least one methylated rosin ester.
Claim 12
Dependent Claim
77 words
An adhesive composition capable of being used as a hot melt adhesive wherein said adhesive composition consists essentially of a blend of (a) about 80 to 60 percent by weight of at least one modified polyethylene having an acid number of at least 5 prepared by reacting polyethylene with a member selected from the group consisting of unsaturated polycarboxylic acid or anhydride, (b) about 20 to 40 percent by weight of at least one rosin ester resin.
Claim 13
Dependent Claim
77 words
An adhesive composition capable of being used as a hot melt adhesive wherein said adhesive composition consists essentially of a blend of (a) about 80 to 60 percent by weight of at least one modified polyethylene having an acid number of at least 5 prepared by reacting polyethylene with a member selected from the group consisting of unsaturated polycarboxylic acid or anhydride, (b) about 20 to 40 percent by weight of at least one rosin ester resin.
Claim 14
Dependent Claim
21 words
An adhesive composition according to claim 11 wherein said rosin ester resin is at least one ester of rosin and pentaerythritol.
Claim 15
Dependent Claim
21 words
An adhesive composition according to claim 11 wherein said rosin ester resin is at least one ester of rosin and glycerol.
Claim 16
Dependent Claim
19 words
An adhesive composition according to claim 11 wherein said rosin ester resin is at least one hydrogenated rosin ester.
Claim 17
Dependent Claim
19 words
An adhesive composition according to claim 11 wherein said rosin ester resin is at least one methylated rosin ester.
Claim 18
Dependent Claim
20 words
An adhesive composition of claim 11 wherein said modified polyethylene has an acid number of about 10 to about 40.
Claim 19
Dependent Claim
21 words
An adhesive composition according to claim 16 wherein said rosin ester resin is at least one ester of rosin and pentaerythritol.
Claim 20
Dependent Claim
21 words
An adhesive composition according to claim 16 wherein said rosin ester resin is at least one ester of rosin and glycerol.
Claim 21
Dependent Claim
19 words
An adhesive composition according to claim 16 wherein said rosin ester resin is at least one hydrogenated rosin ester.
Claim 22
Dependent Claim
19 words
An adhesive composition according to claim 16 wherein said rosin ester resin is at least one methylated rosin ester.
Claim 23
Dependent Claim
73 words
An adhesive composition capable of being used as a hot melt adhesive wherein said adhesive composition consists essentially of a blend of (a) about 70 percent by weight of at least one modified polyethylene having an acid number of at least 5 prepared by reacting polyethylene with a member selected from the group consisting of unsaturated polycarboxylic acid or anhydride, (b) about 30 percent by weight of at least one rosin ester resin.
Claim 24
Dependent Claim
73 words
An adhesive composition capable of being used as a hot melt adhesive wherein said adhesive composition consists essentially of a blend of (a) about 70 percent by weight of at least one modified polyethylene having an acid number of at least 5 prepared by reacting polyethylene with a member selected from the group consisting of unsaturated polycarboxylic acid or anhydride, (b) about 30 percent by weight of at least one rosin ester resin.
Claim 25
Dependent Claim
21 words
An adhesive composition according to claim 21 wherein said rosin ester resin is at least one ester of rosin and pentaerythritol.
Claim 26
Dependent Claim
21 words
An adhesive composition according to claim 21 wherein said rosin ester resin is at least one ester of rosin and glycerol.
Claim 27
Dependent Claim
19 words
An adhesive composition according to claim 21 wherein said rosin ester resin is at least one hydrogenated rosin ester.
Claim 28
Dependent Claim
19 words
An adhesive composition according to claim 21 wherein said rosin ester resin is at least one methylated rosin ester.
Claim 29
Dependent Claim
20 words
An adhesive composition of claim 21 wherein said modified polyethylene has an acid number of about 10 to about 40.
Claim 30
Dependent Claim
21 words
An adhesive composition according to claim 26 wherein said rosin ester resin is at least one ester of rosin and pentaerythritol.
Claim 31
Dependent Claim
21 words
An adhesive composition according to claim 26 wherein said rosin ester resin is at least one ester of rosin and glycerol.
Claim 32
Dependent Claim
19 words
An adhesive composition according to claim 26 wherein said rosin ester resin is at least one hydrogenated rosin ester.
Claim 33
Dependent Claim
19 words
An adhesive composition according to claim 26 wherein said rosin ester resin is at least one methylated rosin ester.
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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) | 1983-06-10 | 1983-12-10 | 1984-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-10 | 1987-12-10 | 1988-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-10 | 1991-12-10 | 1992-06-10 | $7700.00 | Window Closed / Lapsed |