Message Font: Serif | Sans-Serif
 
UnThreaded | Threaded | Whole Thread (9) | Ignore Thread Prev | Next
Author: delighted Big gold star, 5000 posts Add to my Favorite Fools Ignore this person (you won't see their posts anymore) Number: of 892  
Subject: Re: OT: Solarcaine Sales - particularly for Urch Date: 11/8/2002 9:49 PM
Post New | Post Reply | Reply Later | Create Poll Report this Post | Recommend it!
Recommendations: 2
But anyway, back to the notion of an SiO2 based screen; there are so many people allergic to the agents in current use; SiO2 is chemically and biologically inert. (Unless you breathe in the dust.)

RSH.
************************************************************************
Hi RSH

It is Zinc Oxide used in sunblock .

http://www.forbes.com/global/2001/0205/084_2.html
snip
The only publicly traded nanotech pure play with measurable sales is Nanophase Technologies in Romeoville, Illinois, which probably lost more than $4 million on $4.2 million in sales last year. Its initial successes are in some rather mundane products, including zinc oxide, the goopy white sunblock that looks attractive only on a lifeguard's nose.

The traditional method for making zinc oxide is to grind it into crystals about 200 nanometers wide. Nanophase can make them as small as 50 nanometers wide, which renders the zinc oxide transparent—no more white goop—since each crystalline particle is small enough to allow harmless light to pass through. Sunburn-causing ultraviolet light, with its shorter wavelengths, bounces off the particles and never makes it to the skin.

Nanophase produces these particles by first vaporizing zinc rods in a 1,600-degree plasma-arc reactor, essentially a giantblowtorch. Clusters of zinc atoms then mix with a reactive gas, usually oxygen, and cool to a solid. Some 900 million of these zinc oxide crystals can fit in a single layer on the head of a pin.

The company shipped 250 tons of zinc oxide powder last year. Customers include BASF (for use in sunblocks) and Dr. Scholl's (for use as an antifungal agent in foot powder). "

regards

;o)
Post New | Post Reply | Reply Later | Create Poll Report this Post | Recommend it!
Print the post  
UnThreaded | Threaded | Whole Thread (9) | Ignore Thread Prev | Next

Announcements

Foolanthropy 2014!
By working with young, first-time moms, Nurse-Family Partnership is able to truly change lives – for generations to come.
When Life Gives You Lemons
We all have had hardships and made poor decisions. The important thing is how we respond and grow. Read the story of a Fool who started from nothing, and looks to gain everything.
Post of the Day:
Macro Economics

Economic Implications of Cuba
What was Your Dumbest Investment?
Share it with us -- and learn from others' stories of flubs.
Community Home
Speak Your Mind, Start Your Blog, Rate Your Stocks

Community Team Fools - who are those TMF's?
Contact Us
Contact Customer Service and other Fool departments here.
Work for Fools?
Winner of the Washingtonian great places to work, and "#1 Media Company to Work For" (BusinessInsider 2011)! Have access to all of TMF's online and email products for FREE, and be paid for your contributions to TMF! Click the link and start your Fool career.
Advertisement