Chemistry - Do polycarbonate and/or polyurethane have latex?
We have a general rule against "medical questions," but I think yours is different.
First off, latex is a form of poly-isoprene. The "isoprene" part here is the key chemical identity - the letter (so to speak) that repeats in the polymer.
So latex is chemically quite distinct from polyurethane and polycarbonate. Similarly, polyethylene and polypropylene are also distinct.
In short, from a chemical perspective, all of these materials are all different.
Now, that's not to say that:
- You may have allergies to multiple polymers / plastics.
- Manufacturers may blend multiple chemical components into one object.
- Some latex residue may end up on various objects.
For example, many people in healthcare (as you know) use latex gloves, often with latex powder. Small amounts of the latex powder can remain on a wheelchair - causing problems for sensitive individuals like yourself.
If you're looking for a smartphone, you should be able to find one with a metal / glass case (e.g., iPhone, but also others). In that case, the amount of plastic (polymer) should be minimal and you (or a friend) can thoroughly wipe down the device before you use it (e.g, the wrapping plastic might cause sensitivity).