Embolic compositions and methods
US-2024342338-A1 · Oct 17, 2024 · US
Pressure sensitive adhesive composition
US9827347B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9827347-B2 |
| Application number | US-201214237169-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 9, 2012 |
| Priority date | Aug 9, 2011 |
| Publication date | Nov 28, 2017 |
| Grant date | Nov 28, 2017 |
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Abstract
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A pressure sensitive adhesive composition includes 4-15 w/w % styrene-isoprene-styrene copolymer, 20-35 w/w % styrene-isoprene diblock copolymer, 4-15 w/w % tackifier, 6-18 w/w % paraffin oil, and 30-45 w/w % hydrocolloid. The size of the hydrocolloid is below 40 μm.
First claim
Opening claim text (preview).
The invention claimed is: 1. A pressure sensitive adhesive composition comprising: 4-15 w/w % of a SIS (styrene-isoprene-styrene copolymer), 20-35 w/w % of a SI (styrene-isoprene) diblock copolymer, 4-9.23 w/w % of a tackifier, wherein the tackifier is a hydrocarbon resin or a low molecular weight thermoplastic hydrocarbon resin or a mixture of a hydrocarbon resin and a low molecular weight thermoplastic hydrocarbon resin, 6-18 w/w % of a paraffin oil, and 30-45 w/w % of a hydrocolloid, wherein the size of the hydrocolloid is below 40 μm. 2. The pressure sensitive adhesive composition according to claim 1 , wherein D50 of the size of the hydrocolloid is below 30 μm. 3. The pressure sensitive adhesive composition according to claim 1 , wherein the size of the hydrocolloid is below 20 μm. 4. The pressure sensitive adhesive composition according to claim 1 , wherein the hydrocolloid is NaCMC (sodium carboxymethyl cellulose). 5. The pressure sensitive adhesive composition according to claim 1 , wherein the SI diblock copolymer has a molecular weight of 34,000-45,000 g/mol. 6. The pressure sensitive adhesive composition according to claim 1 , wherein the paraffin oil is mineral oil. 7. A medical device comprising a backing layer and a layer of the pressure sensitive adhesive composition according to claim 1 . 8. The medical device according to claim 7 , wherein the medical device is a dressing. 9. The medical device according to claim 8 , wherein a thickness of the dressing is 30-40 μm. 10. The medical device according to claim 7 , wherein the medical device is an ostomy appliance.
Assignees
Inventors
Classifications
Vinyl aromatic monomers and conjugated dienes · CPC title
Presence of styrenic polymer · CPC title
Chemistry & Metallurgy · mapped topic
- A61L24/043Primary
Mixtures of macromolecular materials · CPC title
Adhesives for ostomy devices · CPC title
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Frequently asked questions
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- What does patent US9827347B2 cover?
- A pressure sensitive adhesive composition includes 4-15 w/w % styrene-isoprene-styrene copolymer, 20-35 w/w % styrene-isoprene diblock copolymer, 4-15 w/w % tackifier, 6-18 w/w % paraffin oil, and 30-45 w/w % hydrocolloid. The size of the hydrocolloid is below 40 μm.
- Who is the assignee on this patent?
- Nielsen Anders Christian, Bonné Tune Bjarke, Coloplast As
- What technology area does this patent fall under?
- Primary CPC classification A61L24/043. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Nov 28 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).