Hi all, I am looking for a Commercial polymer with a melting point of about 50°C (120F) and mechanical properties comparable to PP or PE. In best case it would be transparent. Any ideas? Until now I have found CPAO 3 by Idemitsu...
Hi Hinrich,
As far as I know there are ethylene-vinyl acetate copolymers from DuPont (Elvax) which have melting points about 50 °C depending on the VA content. They should also be transparent, but I have no information about the mechanical properties.
Best regards and a prosperous New Year, Matthias
Also DuPont Ionomers (Polyethylene co methacrylic acids). They are very tough and strong. Tm can vary from 60 to 100 C.
Hi Hinrich,
for my knowledge aliphatic polycarbonate-based thermoplastic polyurethanes (Carbothane TPU PC-3575A or PC-3555D, Lubrizol Ltd.) could be interesting for you. They have a Tg between -25 and -29 °C and Vicat temperatures ranging from 46 and 62 °C.
Best regards
Joachim
What is the reason of your question...? Obviously you are working in the field of medical application of polymers and you might have special intentions/specifications using such a polymer...
Knowing more details of your application will allow a more specific answer.
With best regards
Michael
Polypropylene carbonate (PPP) softens at 44°C (Tg). It is available at SIGMAALDRICH and on a commercially scale from Empower Materials under the name QPAC-40.
Dear Hinrich,
Following your question, I believe like other RG colleagues that the polycaprolactone (PCL) can be a good choice if you will like to use a polymer with low melting point (e.g. Capa™ 6500 has a melting point in the range 58-60°C), whereas the mechanical properties can be tailored to be competitive to PP and PE.
On the other hand, if you are looking only to do the processing at low temperature, such in the case of hot melt extrusion (HME) for biomedical applications, you can consider also some (co)polymers that are amorphous and which show low glass transition temperature…
Good luck in your R&D works and best regards,
Marius
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