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Urethane-based pressure sensitive adhesives
US9296933B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9296933-B2 |
| Application number | US-201013320399-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 20, 2010 |
| Priority date | May 15, 2009 |
| Publication date | Mar 29, 2016 |
| Grant date | Mar 29, 2016 |
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- Title
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Abstract
Official abstract text for this publication.
Non-silicone, urethane-based adhesives are disclosed which are prepared by the polymerization of reactive oligomers with the general formula X-A-B-A-X, where X is an ethylenically unsaturated group B is a unit free of silicone, and A is a urethane linkage. The adhesives are optically clear, self wetting and removable. Adhesive articles, including optical adhesive articles, may be prepared using the disclosed non-silicone urethane-based adhesives.
First claim
Opening claim text (preview).
What is claimed is: 1. An adhesive comprising a cured mixture comprising: at least one X-A-B-A-X reactive oligomer, wherein X comprises an ethylenically unsaturated group, B comprises a non-silicone unit with a number average molecular weight of 5,000 grams/mole or greater comprising an oxyalkylene group, and A comprises a urethane linking group, wherein the adhesive is optically clear, self-wetting and removable. 2. The adhesive of claim 1 wherein the adhesive has a Tg of less than 20° C. 3. The adhesive of claim 1 wherein the adhesive has a Tg of less than −10° C. 4. The adhesive of claim 1 wherein the adhesive has a microstructured surface. 5. The adhesive of claim 1 wherein the cured mixture further comprises an ethylenically unsaturated material. 6. The adhesive of claim 1 further comprising an additive, wherein the additive comprises another pressure sensitive adhesive polymer, a plasticizing agent, a tackifying agent or mixture thereof. 7. The adhesive of claim 6 , comprising 5-60 weight % added pressure sensitive adhesive polymer and 5-55 weight % plasticizer.
Assignees
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Classifications
for the production of solar panels · CPC title
Polyurethanes · CPC title
Presence of polyurethane · CPC title
- C09J175/16Primary
having terminal carbon-to-carbon unsaturated bonds · CPC title
Release layer · CPC title
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- What does patent US9296933B2 cover?
- Non-silicone, urethane-based adhesives are disclosed which are prepared by the polymerization of reactive oligomers with the general formula X-A-B-A-X, where X is an ethylenically unsaturated group B is a unit free of silicone, and A is a urethane linkage. The adhesives are optically clear, self wetting and removable. Adhesive articles, including optical adhesive articles, may be prepared using…
- Who is the assignee on this patent?
- Sherman Audrey A, Tapio Scott M, Dizio James P, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification C09J175/16. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 29 2016 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).