Submitted by keithmelville Thu, 2004-12-23 14:45
A polyester resin based on orthophthalic acid, also known as ortho or general purpose (GP)resin. Orthophthalic(ortho) resins are the basic chemistry of polyester resins. It is a raw material utilized in general purpose polyester resin and has a type of molecular structure that is considered to be the standard in the industry.