US5274036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure sensitive adhesive
Assignee: Korpman Ralf Associates
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Filing: 1992-11-17
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Granted: 1993-12-28
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Expires: 2012-11-17
Abstract
Abstract This invention relates to a novel pressure sensitive adhesive formed of a liquid and solid rubber which is substantially resin free. Preferably the adhesive is formed of a weight ratio of solid rubber to liquid rubber of about 1:0.5 to about 1:7. These adhesives exhibit improved adhesion in cold weather and oily surface applications and other properties. The pressure sensitive adhesives can be used in health care, industrial and drug delivery systems.
Inventors
- 👤 Ralf Korpman
- 👤 Vera Korpman
- 👤 Michael Korpman
- 👤 Dennis Korpman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:41
CPC Classifications
C; C08; C08L; C08L53/00; C08L53/02; C09; C09J; C09J115/00; C09J109/00; C09J121/00; C09J153/00; C09J153/02; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/08; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
60 words
A pressure sensitive adhesive composition comprising a solid rubber and a liquid rubber, the weight ratio of said solid rubber to said liquid rubber being from about 1:0.5 to about 1:7 wherein said liquid rubber is selected from the group consisting of liquid isoprene, liquid isoprene-styrene liquid butadiene-styrene, liquid carboxy terminated isoprene, liquid hydroxyl terminated isoprene and liquid hydrogenated isoprene.
Claim 2
Dependent Claim
60 words
A pressure sensitive adhesive composition comprising a solid rubber and a liquid rubber, the weight ratio of said solid rubber to said liquid rubber being from about 1:0.5 to about 1:7 wherein said liquid rubber is selected from the group consisting of liquid isoprene, liquid isoprene-styrene liquid butadiene-styrene, liquid carboxy terminated isoprene, liquid hydroxyl terminated isoprene and liquid hydrogenated isoprene.
Claim 3
Dependent Claim
47 words
A pressure sensitive adhesive composition comprising a solid rubber and a liquid rubber, the weight ratio of said solid rubber to said liquid rubber being from about 1:0.5 to about 1.7 wherein said solid rubber is selected from the group consisting of polymerized styrene-butadiene, styrene-isoprene and styrene-ethylene-butylene.
Claim 4
Dependent Claim
47 words
A pressure sensitive adhesive composition comprising a solid rubber and a liquid rubber, the weight ratio of said solid rubber to said liquid rubber being from about 1:0.5 to about 1.7 wherein said solid rubber is selected from the group consisting of polymerized styrene-butadiene, styrene-isoprene and styrene-ethylene-butylene.
Claim 5
Dependent Claim
37 words
A pressure sensitive adhesive composition comprising a solid rubber and a liquid rubber, the weight ratio of said solid rubber to said liquid rubber being from about 1:0.5 to about 1:7 wherein said solid rubber is SBR.
Claim 6
Dependent Claim
37 words
A pressure sensitive adhesive composition comprising a solid rubber and a liquid rubber, the weight ratio of said solid rubber to said liquid rubber being from about 1:0.5 to about 1:7 wherein said solid rubber is SBR.
Claim 7
Dependent Claim
80 words
A pressure sensitive adhesive composition comprising a solid rubber and a liquid rubber, the weight ratio of said solid rubber to said liquid rubber being from about 1:0.5 to about 1:7 wherein said solid rubber comprises a block polymer having the configuration A-B-A wherein each A is a thermoplastic styrene polymer block, the total block A content being from about 5 to about 50 percent by weight of the block polymer and B is an elastomeric polymer block of isoprene.
Claim 8
Dependent Claim
80 words
A pressure sensitive adhesive composition comprising a solid rubber and a liquid rubber, the weight ratio of said solid rubber to said liquid rubber being from about 1:0.5 to about 1:7 wherein said solid rubber comprises a block polymer having the configuration A-B-A wherein each A is a thermoplastic styrene polymer block, the total block A content being from about 5 to about 50 percent by weight of the block polymer and B is an elastomeric polymer block of isoprene.
Claim 9
Dependent Claim
80 words
A pressure sensitive adhesive composition comprising a solid rubber and a liquid rubber, the weight ratio of said solid rubber to said liquid rubber being from about 1:0.5 to about 1:7 wherein said solid rubber comprises a block polymer having the configuration A-B-A wherein each A is a thermoplastic styrene polymer block, the total block A content being from about 5 to about 50 percent by weight of the block polymer and B is an elastomeric polymer block of butadiene.
Claim 10
Dependent Claim
80 words
A pressure sensitive adhesive composition comprising a solid rubber and a liquid rubber, the weight ratio of said solid rubber to said liquid rubber being from about 1:0.5 to about 1:7 wherein said solid rubber comprises a block polymer having the configuration A-B-A wherein each A is a thermoplastic styrene polymer block, the total block A content being from about 5 to about 50 percent by weight of the block polymer and B is an elastomeric polymer block of butadiene.
Claim 11
Dependent Claim
80 words
A pressure sensitive adhesive composition comprising a solid rubber and a liquid rubber, the weight ratio of said solid rubber to said liquid rubber being from about 1:0.5 to about 1:7 wherein said solid rubber comprises a block polymer having the configuration A-B-A wherein each A is a thermoplastic styrene polymer block, the total block A content being from about 5 to about 50 percent by weight of the block polymer and B is an elastomeric polymer block of ethylene-butylene.
Claim 12
Dependent Claim
80 words
A pressure sensitive adhesive composition comprising a solid rubber and a liquid rubber, the weight ratio of said solid rubber to said liquid rubber being from about 1:0.5 to about 1:7 wherein said solid rubber comprises a block polymer having the configuration A-B-A wherein each A is a thermoplastic styrene polymer block, the total block A content being from about 5 to about 50 percent by weight of the block polymer and B is an elastomeric polymer block of ethylene-butylene.
Claim 13
Dependent Claim
20 words
The composition according to claim 4 wherein said block polymer is chosen from the group consisting of radial and linear.
Claim 14
Dependent Claim
20 words
The composition according to claim 5 wherein said block polymer is chosen from the group consisting of radial and linear.
Claim 15
Dependent Claim
20 words
The composition according to claim 6 wherein said block polymer is chosen from the group consisting of radial and linear.
Claim 16
Dependent Claim
19 words
The composition according to claim 1 wherein said composition further comprises an amount of resin which is tackifier free.
Claim 17
Dependent Claim
41 words
A pressure sensitive adhesive composition comprising a solid rubber and a liquid rubber, the weight ratio of said solid rubber to said liquid rubber being from about 1:0.5 to about 1:7 and a cross linking agent comprising heat reactive phenolic resins.
Claim 18
Dependent Claim
41 words
A pressure sensitive adhesive composition comprising a solid rubber and a liquid rubber, the weight ratio of said solid rubber to said liquid rubber being from about 1:0.5 to about 1:7 and a cross linking agent comprising heat reactive phenolic resins.
Claim 19
Dependent Claim
24 words
The composition according to claim 11 further comprising an accelerator of zinc resinate in the amount of about 5-20 parts of said solid rubber.
Claim 20
Dependent Claim
13 words
The composition according to claim 1 wherein said composition is cross-linked with radiation.
Claim 21
Dependent Claim
19 words
The composition according to claim 1 wherein said composition has a Tg value of less than about -55° C.
Claim 22
Dependent Claim
11 words
The composition according to claim 1 wherein said composition is cross-linked.
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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) | 1996-12-27 | 1997-06-28 | 1997-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-27 | 2001-06-28 | 2001-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-27 | 2005-06-28 | 2005-12-28 | $7700.00 | Window Closed / Lapsed |