June 2017

New Covestro material adept for hash environments

Makroblend® M4000 FR PC+polyester blend from Covestro provides flame retardancy, chemical resistance and biocompatibility for electronic medical devices.

The disinfection and sterilization of medical devices help prevent healthcare acquired infections, which are associated with high healthcare costs and morbidity rates. For medical electronic devices that come in contact with patient skin, this creates a demand for a medical-grade material with a unique triad of properties: flame retardancy, chemical resistance and skin contact biocompatibility.

To meet this demand, Covestro has developed a new polycarbonate blend, Makroblend® M4000 FR polycarbonate/polyester (PC+polyester), that is appropriate for skin contact applications. This high-tech plastic is biocompatible according to ISO 10993-5 (Cytotoxicity) and ISO10993-10 (Irritation and Sensitization).

In addition to its biocompatibility, Makroblend® M4000 FR PC+polyester blend provides a high level of chemical resistance and flame retardancy of V-0 at 2.0 mm and 5VA at 2.3 mm. This new material is appropriate for patient monitoring, diagnostic, fluid delivery and medication delivery systems that come in contact with patient skin and are exposed to harsh hospital disinfectants.

Makroblend® M4000 FR PC+polyester blend also offers other desirable advantages to help medical OEMs solve their toughest challenges, including:

  • High toughness and high modulus, which enables thin-walled designs
  • Excellent flow to help molders maximize productivity
  • Reduced susceptibility to stress cracking, making the material appropriate for molding medical device equipment housings and enclosures, as it helps to protect the device’s electronics and electromechanical components in clinical settings
  • As a medical grade that is appropriate for skin contact, the material is subject to a formulation lock and strict management of change process

For more information, email plastics@covestro.com.

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