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Coated sheet-like plastic material with reduced tendency to colonization by algae, process for the in-line production thereof and use
US8993093B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8993093-B2 |
| Application number | US-201113635452-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 2, 2011 |
| Priority date | Mar 19, 2010 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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- Title
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Abstract
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A coated sheet-like plastics material comprising a) as base, a thermoplastic substrate; and b) on the base, a photocatalytically active coating comprising a water-spreading layer which involves either a sol-adhesion-promoter layer, layer b1+2), comprising an adhesion promoter and a colloid sol, or a colloid-sol layer b2) arranged on an adhesion-promoter layer b1) applied on the substrate a), and a photocatalytically active layer b3) arranged on the water-spreading layer b1+2) or b2), where b3) is obtainable through application and drying of a mixture comprising, based on the solids content of the mixture in percent by weight b31) from 1 to 25% of titanium dioxide and b32) from 75 to 99% of silicon dioxide and/or of a metal oxide which is not soluble in water or of an anionically modified silicon dioxide or metal oxide; where the titanium dioxide is particulate with an average primary-particle size smaller than 10 nm. In-line process for producing said material, and also use as roofing material or as glazing material, preferably in areas with moist conditions. The coated sheet-like plastics material of the invention combines water-spreading properties with photocatalytic activity, without any damage to the thermoplastic substrates. The coated sheet-like plastics substrate of the invention is produced in a relatively uncomplicated, inexpensive and fast in-line process and, in use, provides impressive substrate stability and impressive effectiveness of the coating in resisting initial algal growth.
First claim
Opening claim text (preview).
What is claimed is: 1. A coated sheet-like plastics material, comprising a) as a base, a thermoplastic substrate; and b) on the base, a photocatalytically active coating comprising a water-spreading layer b(2) comprising a colloid-sol layer b(22) arranged on an adhesion-promoter layer b(1) applied on the substrate a), and a photocatalytically active layer b(3) arranged on the water-spreading layer, where the photocatalytically active layer b(3) is obtained by a process…
Assignees
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Classifications
Chemistry & Metallurgy · mapped topic
Cross-Sectional Technologies · mapped topic
- C09D1/00Primary
Chemistry & Metallurgy · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
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- What does patent US8993093B2 cover?
- A coated sheet-like plastics material comprising a) as base, a thermoplastic substrate; and b) on the base, a photocatalytically active coating comprising a water-spreading layer which involves either a sol-adhesion-promoter layer, layer b1+2), comprising an adhesion promoter and a colloid sol, or a colloid-sol layer b2) arranged on an adhesion-promoter layer b1) applied on the substrate a), an…
- Who is the assignee on this patent?
- Hasskerl Thomas, Scharnke Wolfgang, Berkenkopf Martin, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification C09D1/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 31 2015 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).