Important
developments in medical materials by leading manufacturers
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"Ticona"
has introduced FDA – compliant engineering resins for
use in medical –technology applications such as
drug-delivery systems, medical devices, and packaging. The new
materials are said to resist strong disinfectant and many
other chemical media offering toughness, rigidity, dimensional
stability, and resistance to alkalis and hydrolysis.
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Solvay
Advanced Polymers has developed a polysulfone grade to
increase production efficiencies in the manufacture of
membranes for medical filtration, water purification, and
gas separation applications. The product is formulated to
reduce the buildup of scale on pipes and vessels used in the
membrane manufacturing process.
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Saint-Gobain
Performance Plastics is offering Tygon® Medical
Plasticizer – Free (MPF) Series Tubing to replace DEHP
plasticizer PVC tubing in medical products such as
catheters, surgical drains, and fluid and oxygen
administration applications. The medical-grade, clear, non-PVC
polymer tubing is available in several formulations for
specific medical device applications: Tygon MPF-100-described
as cost-effective tubing with excellent chemical
resistance;Tygon plastic connetors; and Tygon MPF-500 – for
peristaltic pump applications.
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Teknor Apex
has introduced three new grades of calendered vinyl medical
film that are said to provide the low-temperature and
high-temperature performance required for such health-care
products as the cold and hot packs used to relieve arthritis
pain and in chiropractic therapy for tendon damage and other
problems.
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A new PVC
compound that prevents blood from clotting is under
development by Teknor Apex and Vestolit GmbH & Co. The
compound, which incorporates permanent anticoagulation
properties in the PVC material, could be used for catheters,
cardiopulmonary-bypass procesures, hemodialysis, wound
drainage, blood collection and storage, and other
applications, the company believes.
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Eastman
Chemical Company has introduced Eastar® copolyester MN005,
a high-flow, clear resin for the medical industry that
offers significantly improved flow properties.
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Advanced
Polymers, Inc. (API), has developed a line of polyurethane
balloons as alternatives to latex and silicone for
applications calling for occlusion, anchoring, and positioning
a balloon or locating a device. The new balloons
reportedly can be inflated by pressure or volume up to twice
their original size and typically have burst pressures ranging
from 0.5 to 10 ATM. The balloons are offered in a wide range
of durometers to make them very soft and compliant to semi
compliant.
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GLS corp.
reports that its Dynaflex® G2706 thermoplastic elastomer
(TPE) compound, made with Kraton® polymer, has been
approved for use in applications requiring USP XIX Class VI
Certification. An
alternative to latex and other thermoset rubbers, the new
grade features elastomeric properties and soft durometer. It
contains no nitrosamines, phthalates, or PVC, says GLS.
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NuSil
Technology has introduced a new family of self-lubricating
liquid silicone rubbers for the health-care industry.
Shortly after the material is molded, a proprietary silicone
fluid appears on the surface of the cured elastomer to serve
as a lubricant. Applications include septums, stoppers,
O-rings, gaskets, valves, and seals.
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RTP Company
has introduced antistatic
compounds designed to boost mechanical or electrical
properties in various applications that require protection
from static build up. The new compounds are available in
acrylic, ABS, clear ABS, acetal and polyethylene resin
systems.
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GE silicons has announced
two new high-performance liquid elastomers including a liquid
elastomer formulated with barium sulfate for use in liquid
injection molding applications where opacity to X-rays
is desired. The
elastomers meet the requirements of USP class VI
testing. A two-component liquid injection molding
silicone offers primerless adhesion to a wide variety of
substrates including metals and many engineering
plastics, making it a suitable material for two-shot or
insert over-molding applications.
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Foster
Corp. offers nanocomposite nylons that offer a
substantial increase in rigidity and stiffness without
brittleness while maintaining a high degree of the base
polymer’s inherent elongation. The material is
recommended for thin-wall applications such as tubing
and film.
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BASF
has developed a plasticizer for PVC and other
polar polymers for use in medical and other applications
that are sensitive from a toxicological perspective.
The plasticizer is a colorless and nearly anhydrous
liquid that is soluble in the usual organic solvents and
miscible and compatible with all monomeric plasticizers
commonly used in PVC.
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Cyro
Industries offers a
new acrylic multipolymer said to exhibit excellent
resistance to alcohol, isopropanol, and lipids in blood;
and improved clarity, impact, ductility, and optics
after gamma sterilization.
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Lendell Manufacturing, Inc. (LMI), a producer of speciality
polyurethane foams, has announced that it is
actively seeking regulatory approval for a new foam with
a cell size and structure specifically designed to
absorb wound exudates, inhibit protein binding, and
facilitate wound healing, while maximizing patient
comfort. LMI and Milliken Chemical have jointly
developed another product that incorporates an
antimicrobial dispersed throughout polyurethane foam for
use as an absorbent wound dressing.
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