US4505976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stoma seal adhesive
Assignee: Ethicon Inc
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Filing: 1983-04-27
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Granted: 1985-03-19
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Expires: 2003-04-27
Abstract
Abstract A pressure-sensitive adhesive having the capacity to absorb at least about 7 percent of its own weight in water and having a desirable combination of plasticity and wet-stick characteristics, as well as good dry skin adhesion. An adhesive composition particularly suitable for use as a stoma seal adhesive comprises (I) from about 30 to about 80 parts by weight each of (a) a pressure-sensitive adhesive component comprising a synthetic or natural gum-like substance and (b) a moisture absorbing component comprising a synthetic carbohydrate or natural water soluble or swellable hydrocolloid together with (II) from about 2 percent to about 20 percent by weight silica, based on the total weight of the adhesive composition.
Inventors
- 👤 Donald F. Doehnert
- 👤 Arthur S. Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:30
CPC Classifications
A; A61; A61L; A61L24/00; A61L24/04; A61L24/043; C; C09; C09J; C09J121/00; A61L2400/00; A61L2400/14; C08; C08L; C08L2666/00; C08L2666/02; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852; Y10T428/2865; Y10T428/2878; Y10T428/2883; Y10T428/2887; Y10T428/2891; Y10T428/2896
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
134 words
A pressure-sensitive adhesive composition having a Williams Plasticity Number of from about 2 mm to 4 mm and the capacity to absorb at least about 7 percent of its own weight in water comprising: (a) from about 30 to about 80 parts by weight of a pressure-sensitive adhesive component selected from the group consisting of natural rubber, silicone rubber, acrylonitrile rubber, polyurethane rubber, polyisobutylene, acrylic polymers and mixtures thereof, (b) from about 30 to about 80 parts by weight of a moisture absorbing component selected from the group consisting of karaya gum, locust bean gum, sodium acrylate polymers, polyvinylalcohol, powdered pectin, gelatin, carboxymethylcellulose, high molecular weight polyethylene glycol, and mixtures thereof; and (c) from about 2 percent to about 20 percent by weight based on the total weight of said adhesive composition of silica.
Claim 2
Dependent Claim
134 words
A pressure-sensitive adhesive composition having a Williams Plasticity Number of from about 2 mm to 4 mm and the capacity to absorb at least about 7 percent of its own weight in water comprising: (a) from about 30 to about 80 parts by weight of a pressure-sensitive adhesive component selected from the group consisting of natural rubber, silicone rubber, acrylonitrile rubber, polyurethane rubber, polyisobutylene, acrylic polymers and mixtures thereof, (b) from about 30 to about 80 parts by weight of a moisture absorbing component selected from the group consisting of karaya gum, locust bean gum, sodium acrylate polymers, polyvinylalcohol, powdered pectin, gelatin, carboxymethylcellulose, high molecular weight polyethylene glycol, and mixtures thereof; and (c) from about 2 percent to about 20 percent by weight based on the total weight of said adhesive composition of silica.
Claim 3
Dependent Claim
24 words
The composition of claim 1 wherein the silica is present in an amount of from about 4 percent to about 12 percent by weight.
Claim 4
Dependent Claim
16 words
The composition of claim 1 wherein the adhesive component is selected from polyisobutylene and acrylic polymers.
Claim 5
Dependent Claim
19 words
The composition of claim 1 wherein the moisture absorbing component is selected from carboxymethylecellulose, karaya gum, pectin and gelatin.
Claim 6
Dependent Claim
27 words
The composition of claim 1 which comprises from about 0 to about 60 parts by weight of each of said adhesive component and said moisture absorbing component.
Claim 7
Dependent Claim
21 words
The composition of claim 5 wherein the adhesive component is polyisobutylene and the moisture absorbing component comprises carboxymethylcellulose and karaya gum.
Claim 8
Dependent Claim
28 words
The composition of claim 5 wherein the adhesive component is a blend of polyisobutylene and an acrylate copolymer and the moisture absorbing component comprises carboxymethylcellulose, gelatin and pectin.
Claim 9
Dependent Claim
8 words
The composition of claim 6 further comprising polybutene.
Claim 10
Dependent Claim
21 words
The composition of claim 1 having the capacity to absorb at least about 15 percent of its own weight in water.
Claim 11
Dependent Claim
18 words
The composition of claim 1 having a Williams plasticity number of from about 2.1 mm to 2.5 mm.
Claim 12
Dependent Claim
115 words
A pressure-sensitive adhesive composition having a Wiliams Plasticity Number of from about 2 mm to 4 mm and the capacity to absorb at least about 7 percent of its own weight in water comprising: (a) from about 40 to about 60 parts by weight of a pressure-sensitive adhesive component selected from the group consisting of polyisobutylene and acrylic polymers and mixtures thereof; (b) from about 40 to about 60 parts by weight of a moisture absorbing component selected from the group consisting of karaya gum, powdered pectin, gelatin, carboxymethylcellulose and mixtures thereof, and; (c) from about 4 percent to about 12 percent by weight based on the total weight of said adhesive composition of silica.
Claim 13
Dependent Claim
115 words
A pressure-sensitive adhesive composition having a Wiliams Plasticity Number of from about 2 mm to 4 mm and the capacity to absorb at least about 7 percent of its own weight in water comprising: (a) from about 40 to about 60 parts by weight of a pressure-sensitive adhesive component selected from the group consisting of polyisobutylene and acrylic polymers and mixtures thereof; (b) from about 40 to about 60 parts by weight of a moisture absorbing component selected from the group consisting of karaya gum, powdered pectin, gelatin, carboxymethylcellulose and mixtures thereof, and; (c) from about 4 percent to about 12 percent by weight based on the total weight of said adhesive composition of silica.
Claim 14
Dependent Claim
8 words
The composition of claim 11 further comprising polybutene.
Claim 15
Dependent Claim
23 words
The composition of claim 11 having the capacity to absorb from about 14 percent to 18 percent of its own weight in water.
Claim 16
Dependent Claim
18 words
The composition of claim 11 having a Williams plasticity number of from about 2.1 mm to 2.5 mm.
Claim 17
Dependent Claim
22 words
A pressure-sensitive surgical sheet material comprising a thin pliable substrate bearing on at least one surface thereof the composition of claim 1.
Claim 18
Dependent Claim
22 words
A pressure-sensitive surgical sheet material comprising a thin pliable substrate bearing on at least one surface thereof 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) | 1988-03-18 | 1988-09-17 | 1989-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-18 | 1992-09-17 | 1993-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-18 | 1996-09-17 | 1997-03-19 | $7700.00 | Window Closed / Lapsed |