Forward-looking ophthalmic customers will only be satisfied if they see lasting value. And they will never see your products if you don’t comply with regulations.
Functionality—Durability
Eastman ophthalmic polymers contribute to lasting value in many ways. This table provides an at-a-glance overview of key properties that contribute to durability matched with the relative advantages of Tenite™ cellulosics, Eastman Trēva™ engineering bioplastic, and Eastman Tritan™ copolyester.
|
Desired property |
Relative advantages of Eastman material technologies |
| | Most advantaged
material +++ | Moderately advantaged
material ++ | Less advantaged
material + |
Modulus high stiffness
|
Trēva | Tenite | Tritan |
| Scratch resistance | All 3 similar | All 3 similar | All 3 similar |
| Impact resistance | Tritan | Tenite | Trēva |
| Chemical resistance | Trēva/Tenite (equivalent) | Trēva/Tenite (equivalent) | Tritan |
| ESC resistance | Trēva/Tenite (equivalent) | Trēva/Tenite (equivalent) | Tritan |
Regulatory—California Proposition 65
California Proposition 65 is officially known as the Safe Drinking Water and Toxic Enforcement Act of 1986.
The impact of “Prop 65” goes well beyond water—and the state of California—to limit what materials can be used in food contact, skin contact, and other products.
Notably, it affects the use of polycarbonate and some other commonly used engineering polymers that contain bisphenol A (BPA), BPS, and other “materials of concern.”
Most Eastman specialty plastics, including Eastman Tritan™ copolyester, Eastman Trēva™ engineering bioplastic, and others, are made without bisphenols, styrenics, halogens, or other materials on the Prop 65 list.
Contact us to talk about how Eastman can help navigate Prop 65 and other regulatory issues that can stand in the way of your company’s vision.