[Trombone-l] Lubricant details

[Chris Tune]

TRANSLATION:

Surfactant is the tip-off.  Soap is a surfactant.  It changes the surface
adhesion and / or cohesion quality of the materials it envelopes.  That is
how soap lifts off dirts and oils and whisks them away in the rinse.

I've seen the patent for SOM.  It is a combo of lube and soap. Not just any
lube, not just any soap, but certain specific types.

The second (smaller bottle) of Slide-O-Mix, is the silicone lubricant.
Together, the inventor of Slide O Mix, believes as do many users, the lube
is now slicker than before.

Makes sense: If you remove the last bit of surface adhesion or cohesion
qualities from an already lubricated interface between two materials (inside
and outside slide), then you are increasing the lubrication effect.

Chris


-----Original Message-----
From: trombone-l-bounces at samford.edu [mailto:trombone-l-bounces at samford.edu]
On Behalf Of Fred Hudson
Sent: Friday, December 05, 2008 9:04 PM
To: Al MacDonald; Trombone-L
Subject: Re: [Trombone-l] Lubricant details


----- Original Message ----- 
From: "Al MacDonald" <alvinmacdonald at earthlink.net>

> Dennis Clason wrote:
>
> DC> Synthetics like Reka and Alisyn are silicone oils.  The exact
> DC> formulations on all of them are trade secrets.  You can get some clues
> DC> as to what is in them with a gas chromatograph and mass spectrometer.
>
> Available at your local Rental City, of course.  Be sure to read the
> manuals first.
>
> Al MacDonald
> Denver, Colorado

Actually I had the Slide-O-Mix parts analyzed by Gas Chromatograph - Mass 
Spec. Not to try to steal trade secrets but just to satisfy my curiosity. My

son is head of the analytical lab for a company that makes textile 
processing chemicals many of which are lubricants. I asked him to just 
report in general terms rather than a precise analysis. The white stuff is a

very dilute solution of a  non-ionic (and therefore non-sudsing) surfactant 
of the ethoxylated hindered phenol type.

One possible explanation of the green slime that some have reported seeing 
when using SOM may be due to its surfactant properties. Yellow brass is very

susceptible to corrosion by wet carbon dioxide forming green copper 
carbonate as a scale on the surface. Since we are continually pumping wet 
carbon dioxide through our horns every time we play this will eventually 
build up particularly on the inner surface of the outer brass slides. Red 
brass and nickel silver are less susceptible. This can be mimimized by 
swabbing the slides frequently but sometimes has to be acid washed to 
remove. The surfactant in SOM may be effectively wetting the carbonate as it

forms and holding it in suspension resulting in the reported green slime.

There may be other explanations just as valid but that's my story and I'm 
sticking to it - at least until I get my Inductively Coupled Plasma Analyzer

out of hock so I can analyze the slime. >;>}

Fred H


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