Dow Corning Cookie Policy

We use cookies to enhance your experience with Dow Corning. Learn how cookies are used on this website and view our privacy statement.

By continuing to browse this site, you agree and consent for cookies to be used.

Silicones from Dow Corning
Log In | Profile/Preferences | Customer Support | Contact Us      Global (English). Change
Products             Technical Library             Premier Services             About Dow Corning             Careers
Discovery Center Home
Silicone Showcase
Safety & Sustainability
Proven Innovation
Chemistry Corner
Physical & Chemical Properties
Tailoring Properties & Performance
Organically Modified Silicones
Cure Systems
How Silicones Work
Silicone Manufacturing
Fascinating Silicone™ Chemistry Corner – Structure

Basic organoreactive silicone fluid structures

Reactive organic groups can be attached:

  • Pendant to the siloxane backbone ("rake" functionality)
  • At both ends of the siloxane polymer chain (ABA functionality)
  • At one end of the chain (AB functionality)

Graft copolymers, where two or more different organofunctional groups are attached, can also be created.

Illustration of pendant, ABA and AB organic functionalities

Pendant or "rake" functionality, where the organic functionality is distributed along the polysiloxane chain, is used to chemically bond the polysiloxane polymer to an organic material or to give unique orientation of the silicone on a metal or glass surface.

AB and ABA functionalities are preferred for molecular architecture or copolymer synthesis because there are only one or two reactive groups per polymer chain and they are located predictably at the ends. These end groups are more exposed than the pendant groups found in rake structures and are more available to form copolymers with organic intermediates.

AB and ABA functionalities are also ideal for tying silicone and organic structures together to form silicone-organic or silicone-organic-silicone block copolymers.

Did you know ... amine-functional silicones can crosslink with hair to create fast-drying films that do not build up!

Expand your understanding

Learn about:
Organic functionalities

Explore your material options

Get answers

Have a question about organofunctional silicones?

Ask an Expert

Silicone chemistry expert
Stay informed
Sign up for free e-mail updates about silicone materials and technologies from Dow Corning.

Media Center    |    REACH    |    Site Map    |    Other Dow Corning Websites         
Using this website means you understand our Privacy Statement and agree to our Terms & Conditions.
©2000 - 2017 Dow Corning Corporation. All rights reserved. Dow Corning is a registered trademark of Dow Corning Corporation, a wholly owned subsidiary of The Dow Chemical Company.
The Corning portion of the Dow Corning trademark is a trademark of Corning Incorporated, used under license. XIAMETER is a registered trademark of Dow Corning Corporation. We help you invent the future is a trademark of Dow Corning Corporation.®™Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow.
Dow Corning complies with the California Transparency in Supply Chains Act.