Help Clear this up. Silicones

I

imported_Intel486

New member
I'm going to post some links here. If you want to post this certain thing either in a question form or statement let me give you my answer before hand, "Yes, I know, I know, I know."



Ok, I read a few articles today on... well here is the link to the first article.



http://www.autoint.com/Basics of tire vinyl leather protection.htm



Hope it works, well. In the article is says Dimethal silicones are bad. It says siloxane or amino functional familes are the good silicones.



http://www.autoint.com/can_detailers_change_with_the_ti.htm



Now this articles (published after the first one) says polydimethal siloxane are the only one you should use. Now, it has siloxane in it but it also has dimethal in it... the first one says dimethal is bad? So... chemical engineers clear this up! If it has the word Siloxane in it, then does that make it good?



What about Dimethylpolysiloxanes? It has all three words again but in a different order.



TIA
 
This sure smacks of organic chemistry.



I don't know how silicone relates to dimethyl, siloxane, or amino, but from the sounds of it, it's almost like they're the "functional groups" attached to Si. Kind of like the functional groups attached to hydrocarbon chains and benzene rings.



If that's the case, then all of the combinations you mention could have different properties. That is, single dimethyl could behave very different from polydimethyl. In organic chemistry naming is very specific and small changes in wording can make a big difference.



Not sure if I helped at all, but this is kinda interesting. :)



EDIT: I just realized I'd been typing methyl (CHx) and not methal.... what the heck is "methal"? It's been a while. :(
 
From what I understand and also from practically memorizing most of Ron Ketcham's old posts, when the first article states that siloxane or amino functional silicones are good, they are referring specifically to silicones from the Polydimethyl Siloxane group, which are water-based and commonly known here as PDMS silicones. Even though it contains the word "Dimethyl", it's still very different from the oil-based Dimethyl Silicones which are found in many OTC products and are extremely shiney.



I think 4DSC pretty much summed it up perfectly... dimethyl silicones and PDMS silicones share a few (or just one) of the same functional groups and a slight change in any of the other functional groups will completely change the entire characteristics of the Si molecule.
 
You must log in or register to reply here.
Back
Top