From Mike Phillips/Meguiar's about silicones:
Quote:
In this thread posted in our Interior Care Forum, The good and the bad types of silicone, one of our forum members posted a reply including information on silicones that our R&D department concluded was filled with misinformation and inaccuracies.
Below we have included some information that counters what the forum member posted to demonstrate that you can't always believe what you read on the Internet. Often times people on the Internet merely copy and paste information found on other websites by doing a simple google search. Often times this information is out of context as well as inaccurate and unreliable.
Meguiar's Statement on silicones as it relates to the post on our forum in the above included link.
Silicones, or polysiloxanes, are inorganic synthetic polymers consisting of a silicon-oxygen backbone that can be composed into a wide variety of materials. They can vary in consistency from liquid to gel to rubber to hard plastic. The most common type is linear polydimethylsiloxane (PDMS).
PDMS are odorless, colorless, water resistant, chemical resistant, oxidation resistant, stable at high temperature, and do not conduct electricity. PDMS are considered inert and impervious to the effects of aging, weather, sunlight, moisture, heat, cold, and some chemical assaults.
Thus, PDMS are ideal for and found in many products, such as lubricants, insulation, adhesives, sealants, gaskets, car parts, medical devices, children toys, dishware, gloss enhancer and even Silly Putty
There are many misunderstandings and misstatements about silicones and their use in automotive appearance products. To help and clarify and provide a basis of scientific fact here are just a few examples:
Notes:
The text in Red was posted by a forum member.
The text in Back is from a professional chemist.
- “Dimethyl is derived from Aromatic hydrocarbon (petroleum) distillates”
Not true… They are not from “Aromatic” hydrocarbons.
- “Polydimethylsiloxane (PDMS) is a basically inert, water based”
Not true.... PDMS is oil soluble.
- “The best way to describe most forms of silicone is to think of it as a man-made wax ester."
Not true... It is not a wax, not an ester, it is a unique chemistry based upon inorganic materials.
- “Silicone is created by the reaction generated when you combine fatty acids with Polydimethylsiloxane”
Not true…PDMS is non-reactive.
- “Dimethyl causes vinyl and most plastics to dry out and crack”
Not true… PDMS are odorless, colorless, water resistant, chemical resistant, oxidation resistant, stable at high temperature, and do not conduct electricity. PDMS are considered inert and impervious to the effects of aging, weather, sunlight, moisture, heat, cold, and some chemical assaults.
- “This type of silicone also causes ‘sling’,"
Not true… Anything placed on tires will have a tendency to sling due to centrifugal force.
- “Hydrocarbon (petroleum) distillates can be further purified, re-distilled, reacted and combined with various other chemicals to produce a wide range of environmentally safe (water-based) and useful silicone products.”
Not true… Silicones are not hydrocarbon distillates
- “Silicone is an active ingredient in sun UV amplification."
Not true… Silicone does not change the effects of sunlight and its properties.
- “As a low quality silicone dressing evaporates away, the silicone oil is left behind, the sun then amplifies these residues, and the drying process is accelerated.”
Not true… PDMS that are used in tire products do not evaporate, nor do they change the effects of sunlight and it’s properties.
End of Meguiar's Statement
Note the goal here is not to embarrass or disparage anyone on our forum from posting information and specifically information on complex topics such as the chemistry of silicones, but to point out that it's easy to copy and paste information found on other websites or out of a book from the library, but as scientific sounding as the information may read, if the person posting the information is not a professional chemist, trained in the profession of chemistry, then anything they post should be questioned, and if questioned, the person posting it should be able to back it up with scientific facts or discontinue posting information they can't back up and don't generate themselves from their own learned knowledge on the subject.
It's important to remember that the goal of Meguiar's Online is to help people get the best results from their time, money and efforts. As such, the primary focus of our our discussions should be on the performance of the products, not the ingredients in our products and the chemistry behind them.
Meguiar's, just like every other company in the business of manufacturing car care chemicals is not going to tell everyone what's in our products and how they are made. Its ridiculous to even think that any car wax manufacture would do this.
It's okay to be interested as well as curious as to what's in a product and how it works, I can assure you I'm interested and curious in these things also. But at the end of the day, the big picture is the big picture, and that's choosing and using the right products for the job and the results you achieve.
That's what this forum is here for, that's our goal, helping you to choose and use the correct product in the right way and achieve the results you're looking for.
People need to get away from the anything that has silicone or petroleum in it is bad.