| View previous topic :: View next topic |
| Author |
Message |
Mbeh Chinenge Anthony
Guest
|
 Posted: Sun Aug 10, 2003 10:52 pm Post subject: UV sensitizers for higher shelf-life and water miscible for |
 |
|
We don>t know where we can get UV SENSITZERS for polyvinyl
alcohol/polyvinyl acetate. Does anyone know where can get these
sensitizers particularly in small quantities? |
|
| |
|
 Back to top |
d h
Guest
|
| Posted: Thu Aug 14, 2003 12:45 am Post subject: Re: UV sensitizers for higher shelf-life and water miscible |
|
|
[quote]mbehc@yahoo.com (Mbeh Chinenge Anthony) wrote in message
news:<4bcca73e.0308100952.55a40870@posting.google.com>...
We don>t know where we can get UV SENSITZERS for polyvinyl
alcohol/polyvinyl acetate. Does anyone know where can get these
sensitizers particularly in small quantities?
Apparently not.
...
[/quote]
Well in the US, Chem Service of West Chester PA is good for small quantities at
reasonable prices. Get their catalog. I don>t think they are on the Web.
Last time I checked they had a pageful of UV stabilizers and oxidation
inhibitors for polymers. Don>t know about sensitizers.
Also, Aldrich, Sigma, TCI, Lancaster, Alfa have huge catalogs and often sell
small quantities (1-10g) at a decent price.
If you find a company that makes and sells the chemicals, you might sweet-talk
your way into some free samples. |
|
| |
|
| Back to top |
Mark Tarka
Guest
|
| Posted: Thu Aug 14, 2003 9:45 pm Post subject: Re: UV sensitizers for higher shelf-life and water miscible |
|
|
fdchemdh@aol.com.duh (d h ) wrote in message news:<20030813154534.08577.00000696@mb-m13.aol.com>...
[quote]mbehc@yahoo.com (Mbeh Chinenge Anthony) wrote in message
news:<4bcca73e.0308100952.55a40870@posting.google.com>...
We don>t know where we can get UV SENSITZERS for polyvinyl
alcohol/polyvinyl acetate. Does anyone know where can get these
sensitizers particularly in small quantities?
Apparently not.
...
Well in the US, Chem Service of West Chester PA is good for small quantities at
reasonable prices. Get their catalog. I don>t think they are on the Web.
Last time I checked they had a pageful of UV stabilizers and oxidation
inhibitors for polymers. Don>t know about sensitizers.
[/quote]
From the subject line:
"Shelf-life" suggests "stabilizers".
"Photopolymerisation" suggests "sensitizers".
I don>t see how the twain can ever meet. Wouldn>t
seem possible for a sensitizer in low concentration
to be converted to a stabilizer after the rxn
is over. Then again, I>m not a polymer chemist :-)
Mark (Why is it "photopolymeri_s_ation", but "stabili_z_ers"?) |
|
| |
|
| Back to top |
|
