I'll say that in my work on boats, lime is/was used as a volume enhancer, polyester resin + lime= cheap putty, good for some applications like filling voids.  Talc also a volume enhancer but absorbs water, Talc is alos  Bondo's main ingredient. IN the below formula this would hold moisture in supension which adds mass to the product.

MY two cents.

Mark Keller
91 Carat
Lazarus

:    Thu, 21 Dec 2006 14:19:46 -0800
From:    Nathaniel Poole <npoole@TELUS.NET>
Subject: Re: Anyone tried quiet car?

Acrylic latex, Lime, talc and mica. The latex is the binder and presumably
the mica - being a relatively inert mineral -adds body. Both the Lime and
Talc would be readily ionised in H20, but in latex? Isn't it a long chain
hydrocarbon? Any chemists out there?

Don't see a magic formula hidden here. They claim that the material converts
vibration (kinetic energy) to heat. In other words it stretches. Sounds like
the latex is doing all the work, like painting latex rubber on a drum head.
Maybe the other stuff keeps it from peeling off.

At first glance it would seem like you could get the same effect with layers
of cheap latex paint mixed with an inert thickener. Like talc?

Nathaniel

On 12/21/06 12:58 PM, "Bostig Eng" <syncrolist@BOSTIG.COM> wrote:

>> Yeah I think we may want to get a tiny amount and compare it with some other
>> "viscoeleastic polymers" esp since I just pulled the components from their
>> MSDS:
>>
>> modified acrylic latex resin NE
>> magnesium silicate 14807-96-6
>> calcium carbonate 471-34-1
>> mica 12001-26-2
>>
>> Yeah... Not real hard to come by any of those really cheap...
>>
>> Jim
>>
>>
>> ________________________________________
>> Bostig Engineering
>> Engine Systems Voodoo
>> http://www.bostig.com/
>> 617.272.3800
>>
>>
>>
>> -----Original Message-----
>> From: Zeitgeist [mailto:gruengeist@GMAIL.COM]
>> Sent: Thursday, December 21, 2006 3:01 PM
>> To: vanagon@GERRY.VANAGON.COM
>> Subject: Re: Anyone tried quiet car?
>>
>> I wonder if it's just this stuff repackaged and price-inflated for your
>> convenience.
>> http://www.snowroof.com/
>>
>> On 12/21/06, Jake de Villiers <crescentbeachguitar@gmail.com> wrote:
>
>
>>>>
>>>> Bear in mind that we'll need a complete and detailed report.     :)
>>>>
>>>> I'd like to know what the material really is; I bet its a lot cheaper
>>>> in its natural habitat.
>>>>
>>>>
>>
>>
>> Casey
>> Olympia, WA
>> Biodiesel: "I drive in a persistent vegetative state"
>> '87 300TD intercooler/propane #22 0-60mph 7.3sec (220k)
>> '84 300D (218k)
>> Gashuffer:
>> '89 Vanagon Wolfsburg Edition (187K)
>> http://users.zhonka.net/zeitgeist/Misc/IMG_0171.JPG
>
>