Patent US5965657A successfully refreshed from Google Patents.
US5965657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air stable adhesive stick
Assignee: Eastman Kodak Co
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Filing: 1997-01-23
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Granted: 1999-10-12
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Expires: 2017-01-23
Abstract
Abstract A solid, air stable adhesive composition containing wax and a polyolefin having a viscosity no greater than 2,000 centipoise and a needle penetration hardness of at least 50 dmm is disclosed. It is further disclosed that propylene-ethylene copolymer is the preferred polyolefin of the present invention.
Inventors
- 👤 Leo Paul Voegtli
- 👤 Shane Kipley Kirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:51
CPC Classifications
C; C09; C09J; C09J123/00; C09J123/02; C08; C08L; C08L91/00; C08L91/06; C09J123/10; C09J123/14; C09J123/142
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
46 words
An adhesive composition comprising a blend of: a) about 55 to 85 weight percent polyolefin having a penetration hardness of at least about 50 dmm and a viscosity no greater than about 2,000 centipoise at 190° C.; and b) about 15 to 45 weight percent wax.
Claim 2
Dependent Claim
46 words
An adhesive composition comprising a blend of: a) about 55 to 85 weight percent polyolefin having a penetration hardness of at least about 50 dmm and a viscosity no greater than about 2,000 centipoise at 190° C.; and b) about 15 to 45 weight percent wax.
Claim 3
Dependent Claim
12 words
The composition according to claim 1 wherein said composition is a solid.
Claim 4
Dependent Claim
13 words
The composition according to claim 1 wherein said polyolefin is a propylene-ethylene copolymer.
Claim 5
Dependent Claim
37 words
The composition according to claim 3 wherein said propylene-ethylene copolymer is present in a concentration of about 70 to 80 weight percent and said wax is present in a concentration of about 20 to 30 weight percent.
Claim 6
Dependent Claim
20 words
The composition according to claim 3 wherein said propylene-ethylene copolymer has a penetration hardness of at least about 75 dmm.
Claim 7
Dependent Claim
20 words
The composition according to claim 3 wherein said propylene-ethylene copolymer has a T g no greater than about (-20)° C.
Claim 8
Dependent Claim
20 words
The composition according to claim 6 wherein said propylene-ethylene copolymer has a T g no greater than about (-33)° C.
Claim 9
Dependent Claim
22 words
The composition according to claim 3 wherein said propylene-ethylene copolymer has a viscosity no greater than about 300 centipoise at 190° C.
Claim 10
Dependent Claim
19 words
The composition according to claim 1 wherein said wax has a needle penetration hardness less than about 10 dmm.
Claim 11
Dependent Claim
31 words
The composition according to claim 9 wherein said wax consists of a blend of polyethylene wax and paraffin wax, wherein said blend has a concentration ratio of about 1:2 to 2:1.
Claim 12
Dependent Claim
46 words
The composition of according to claim 1 wherein said composition has sufficient adhesive strength so that the composition forms a destructive bond when applied between two sheets of white bond paper such that when the two sheets are rapidly pulled apart there is a paper tear.
Claim 13
Dependent Claim
52 words
An adhesive composition comprising a blend of: a) about 40 to 75 weight percent polyolefin having a penetration hardness of at least about 50 dmm and a viscosity no greater than about 2,000 centipoise; b) about 15 to 45 weight percent wax; and c) about 5 to 30 weight percent tackifying resin.
Claim 14
Dependent Claim
52 words
An adhesive composition comprising a blend of: a) about 40 to 75 weight percent polyolefin having a penetration hardness of at least about 50 dmm and a viscosity no greater than about 2,000 centipoise; b) about 15 to 45 weight percent wax; and c) about 5 to 30 weight percent tackifying resin.
Claim 15
Dependent Claim
13 words
The composition according to claim 12 wherein said polyolefin is a propylene-ethylene copolymer.
Claim 16
Dependent Claim
46 words
The composition according to claim 13 wherein the concentration of said propylene-ethylene copolymer is about 55 to 70 weight percent, the concentration of said wax is about 20 to 30 weight percent, and the concentration of said tackifying resin is about 10 to 25 weight percent.
Claim 17
Dependent Claim
23 words
The composition according to claim 12 wherein said tackifying resin has a ring and ball softening point of about 95 to 135° C.
Claim 18
Dependent Claim
15 words
The composition according to claim 12 wherein said tackifying resin is a hydrocarbon tackifying resin.
Claim 19
Dependent Claim
68 words
A process for making a solid adhesive comprising blending, at a temperature of about 120 to 130° C., a mixture comprising about 55 to 85 weight percent propylene-ethylene copolymer having a penetration hardness of at least about 5 dmm and a viscosity no greater than about 2,000 centipoise at 190° C. and about 15 to 45 weight percent wax for a time sufficient to form a homogeneous blend.
Claim 20
Dependent Claim
68 words
A process for making a solid adhesive comprising blending, at a temperature of about 120 to 130° C., a mixture comprising about 55 to 85 weight percent propylene-ethylene copolymer having a penetration hardness of at least about 5 dmm and a viscosity no greater than about 2,000 centipoise at 190° C. and about 15 to 45 weight percent wax for a time sufficient to form a homogeneous blend.
Claim 21
Dependent Claim
10 words
An adhesive stick formed from the composition of claim 1.
Claim 22
Dependent Claim
10 words
An adhesive stick formed from the composition of claim 11.
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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) | 2002-10-11 | 2003-04-12 | 2003-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-10-11 | 2007-04-12 | 2007-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-10-11 | 2011-04-12 | 2011-10-12 | $7700.00 | Window Closed / Lapsed |