Why do water repellant products (ie Scotchgard) repel oil as well?

Subject: Why do water repellant products (ie Scotchgard) repel oil as well?

Date: Thu Mar 27 15:13:30 1997
Posted by: Jackie
Grade level: teacher/prof
School/Organization: Del Norte High School
City: Albuquerque State/Province: NM
Country: USA
Area of science: Chemistry
Message ID: 859497210.Ch

Message:

Why do water repellant products (ie Scotchgard) repel oil as well?
Products like Scotchgard can be used to make fabric water repellant 
by coating them with a hydrophobic layer. Why then does this layer
not attract oils?

Re:Why do water repellant products (ie Scotchgard) repel oil as well?

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