Silicone urethane urea copolymer and preparation and use thereof
US-2020002460-A1 · Jan 2, 2020 · US
Polyurethane-polyorganosiloxane copolymer and method for its preparation
US11142639B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11142639-B2 |
| Application number | US-201716319498-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 18, 2017 |
| Priority date | Sep 19, 2016 |
| Publication date | Oct 12, 2021 |
| Grant date | Oct 12, 2021 |
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Abstract
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A polyurethane-polyorganosiloxane copolymer and methods for its preparation are disclosed. The copolymer has polyfunctional end groups, which render it crosslinkable by multiple crosslinking reactions.
First claim
Opening claim text (preview).
The invention claimed is: 1. A polyurethane-polyorganosiloxane copolymer comprising formula: where each R U is independently an alkenyl group of 2 to 13 carbon atoms; each R D is independently an alkylene group of 2 to 13 carbon atoms; each R P is a trivalent hydrocarbon group or a trivalent halogenated hydrocarbon group; each subscript b is independently 0 or 1; each subscript a is independently 0 to 100,000; and subscript n is 1 to 10,000 each subscript y3 is independently 1 to 200,000; and subscript n1 is 1 to 1,500,000. 2. A crosslinkable composition comprising: (A) the copolymer of claim 1 , and (B) a curing catalyst. 3. The crosslinkable composition of claim 2 , further comprising (C) a crosslinker. 4. The crosslinkable composition of claim 3 , where (C) the crosslinker is selected from (C1) an acrylate crosslinker, (C2) a crosslinker containing alkenyl groups other than in an acrylate group, (C3) a thiol functional crosslinker, or (C4) an SiH containing crosslinker.
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Classifications
containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen · CPC title
Polyethers containing oxyethylene units · CPC title
containing also tin-carbon bonds · CPC title
acyclic · CPC title
Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64 · CPC title
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Frequently asked questions
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- What does patent US11142639B2 cover?
- A polyurethane-polyorganosiloxane copolymer and methods for its preparation are disclosed. The copolymer has polyfunctional end groups, which render it crosslinkable by multiple crosslinking reactions.
- Who is the assignee on this patent?
- Dow Silicones Corp
- What technology area does this patent fall under?
- Primary CPC classification C08L75/04. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 12 2021 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).