Ultraviolet radiation absorbing polyethers
US-9255180-B2 · Feb 9, 2016 · US
Ultraviolet radiation absorbing polyethers
US9758618B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9758618-B2 |
| Application number | US-201615007591-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 27, 2016 |
| Priority date | Jun 28, 2012 |
| Publication date | Sep 12, 2017 |
| Grant date | Sep 12, 2017 |
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Abstract
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A polymer composition comprising a linear ultraviolet radiation absorbing polyether that comprises a chemically bound UV-chromophore.
First claim
Opening claim text (preview).
The invention claimed is: 1. A composition comprising a cosmetic oil solvent and a polymer composition comprising a linear ultraviolet radiation absorbing polyether that comprises a covalently bound UV-chromophore and a backbone comprising glyceryl repeat units. 2. The composition of claim 1 , wherein the cosmetic oil solvent comprises alkyl benzoates. 3. The composition of claim 1 having an SPF of about 25 or greater. 4. The composition of claim 1 , wherein the linear ultraviolet radiation absorbing polyether comprises a repeat unit of the formula: where Y is the covalently bound UV-chromophore. 5. The composition of claim 1 , wherein the polymer composition comprises about 50 or more of said linear ultraviolet radiation absorbing polyether. 6. The composition of claim 1 , wherein the UV-chromophore is a benzotriazole. 7. The composition of claim 1 , wherein the UV-chromophore absorbs both UVA and UVB radiation. 8. The composition of claim 1 , wherein the polymer composition has a weight average molecular weight of about 500 to about 50,000. 9. A linear ultraviolet radiation absorbing polyether prepared by the process of transesterification of a linear polyglycerol containing side chain hydroxyl groups and a UV-chromophore ester. 10. The polyether of claim 9 , wherein transesterification is performed using an acid catalyst. 11. The polyether of claim 9 , wherein the UV chromophore is a benzotriazole. 12. The polyether of claim 9 , wherein the UV-chromophore absorbs both UVA and UVB radiation. 13. The polyether of claim 9 having a weight average molecular weight of about 500 to about 50,000.
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Classifications
Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof · CPC title
Esters of unsaturated alcohols {, e.g. allyl (meth)acrylate} · CPC title
- A61K8/86Primary
Polyethers · CPC title
of monohydric alcohols or phenols · CPC title
Polyalkylene oxides · CPC title
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Frequently asked questions
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- What does patent US9758618B2 cover?
- A polymer composition comprising a linear ultraviolet radiation absorbing polyether that comprises a chemically bound UV-chromophore.
- Who is the assignee on this patent?
- Johnson & Johnson Consumer Inc
- What technology area does this patent fall under?
- Primary CPC classification A61K8/86. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Sep 12 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).