PVC Heat stabilizers for medical applications-3
The inorganic stabilizers are mainly acid scavengers that restrict the release of toxic gases such as hydrochloric acid and organic co-stabilizers are used to improve the color hold and UV stability of the final product. Along with these stabilizers, many processors also use Epoxidized Soya-Bean Oil (ESBO) in the flexible compounds to improve heat stability and UV resistance of the final article. ESBO is also a bio-based product and can be used safely in all food contact or insertable parts of devices such as tubes.
Moreover, PVC is being used in hospitals in the form of floorings and wall claddings in hygienic rooms. Hygienic surfaces need to be cleaned with various cleaning agents and due to chemical resistance PVC claddings are preferred. The added advantages such as durability, low maintenance cost, and acoustic properties in the material, PVC is preferred by modern health care architects for the interior design of the hospitals. For such rigid applications, internal and external lubricants are also used in combination with the stabilizers to make processing easy.
The use of PVC and Ca-Zn based stabilizers is a sustainable solution. All single-use and multi-use articles can be recycled. Most material is transparent and made with premium grades of additives. Hence, once sterilized it can be sold at a very good price to the recyclers. Secondly, in many other transparent applications, methyl tin stabilizers are used which are not compatible with Lead-based stabilizers. Since Ca/Zn stabilizers are primarily used in medical applications the material to be recycled can be used in any system as Ca/Zn based stabilizers are compatible with all ingredients.
NOVISTA Calcium-Zinc stabilizers are performance-oriented and designed particularly to provide excellent long-term retention of color, outstanding mechanical properties and a high level of weathering resistance. These products are widely accepted and appreciated all over the world due to ROHS and REACH compliance for flexible as well as rigid applications.