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Chuck Lippincott
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Join Date: Apr 2007
Posts: 2

Self-Cleaning Surfaces

04/29/2007 12:36 PM

Anyone interested in Self-Cleaning Surfaces based on Photocatalytic Technology using nano-particles of titanium dioxide activated by ambient ultra-violet light rays ?

Chuck Lippincott : celcons@earthlink
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Anonymous Poster
#1

Re: Self-Cleaning Surfaces

04/29/2007 5:54 PM

This is well known technology going back to the 1970's and patented. The windows on Cunard's QE11 are coated and working well.
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mtcuberes
Active Contributor

Join Date: Jan 2007
Posts: 20
#2
In reply to #1

Re: Self-Cleaning Surfaces

04/30/2007 2:23 AM

Were nanoparticles so-well-known "as such" at the 1970's?

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Anonymous Poster
#3
In reply to #2

Re: Self-Cleaning Surfaces

04/30/2007 6:13 AM

They did not call them (Nano Particles) but titanium dioxide was and is used. Its use as cleaning agent is well documented. It is the process using the agent that counts not the particles size.
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Cardio07
Guru
Popular Science - Weaponology - Cardio-7

Join Date: Oct 2006
Posts: 621
Good Answers: 10
#4
In reply to #3

Re: Self-Cleaning Surfaces

04/30/2007 8:54 AM

A K A: chalking paint, which contains TiO2.
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Anonymous Poster
#5
In reply to #1

Re: Self-Cleaning Surfaces

04/30/2007 1:42 PM

Wouldn't the patent have run out by now - or were more recent improvements very significant?
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