Coating sterilization resistance

The printing ink industry applies P.Y.110 in all types of printing, provided the pigment satisfies the demands. The prints are resistant to many organic solvents, including the DIN 165224/1 standardized solvent mixture. Prints made from P.Y.l 10 are fast to clear lacquer coatings, sterilization, and are very heat stable. 1/1 to 1/25 SD letterpress proof prints equal step 7 on the Blue Scale for lightfastness. 

An Instrumental Method for Measuring the Sterilization Resistance (Blushit ) of Can Coatings... 

P.O.34 shows good solvent resistance to a number of organic solvents. Its prints are more stable in this respect than those made from P.O.13, which is also true for the standard DIN 16 524 solvent mixture (Sec. 1.6.2.1). In spite of these comparatively good fastness properties, P.O.34 may recrystallize in various printing inks, depending on the processing conditions. P.O.34 prints are fast to paraffin and dioctyl phthalate likewise, they tolerate clear lacquer coatings and may be sterilized. 

Pigment Red 8 affords clean, bluish shades of red. It is primarily used in the printing ink industry. P.R.8 exhibits high tinctorial strength and produces brilliant prints. Commercially available types with specific surface areas between about 50 and 60 m2/g afford transparent prints. P.R.8 is used in prints which require no particular solvent resistance. However, the pigment tolerates solvents much better than the yellower P.R.7 in this respect, P.R.8 matches the yellower, but more light-fast P.R.5. The prints are fast to soap but not entirely stable to butter and paraffin. P.R.8 is sensitive to clear lacquers coatings and to sterilization. It tolerates exposure to 140°C for 30 minutes. 

In applications where the pigment is fast enough to solvents to satisfy the requirements, it may also be used for offset, packaging gravure, and flexo printing inks. The resulting prints are soap, alkali, and acid resistant. They are not completely fast to paraffin and quite sensitive to butter and a number of other fats. P.R.14 prints are not fast to clear lacquer coatings and may not be sterilized. Heat stabil-... 

Owing to its applications in homeland security, sterilization validation, and astrobiology, bacterial spore detection has become a hot field. However, direct detection of bacterial spores can be challenging for the same reasons that make endospores difficult to irradicate. The tough spore coat is impermeable to staining techniques, so most microscopy and flow cytometry methods are not useful. Endospores are also highly resistant to lysis, meaning that common DNA extraction protocols are difficult to perform. The lack of measurable metabolism renders microcalorimetry and cellular respiration techniques ineffective. 

Vapor permeable adhesive films are of use in those wounds in which granulation tissue is established and wound exudate is declining. These products were developed as materials that would, in part, mimic the performance of skin. The resultant products were transparent, synthetic adhesive films generically described as vapor permeable adhesive membranes, and comprised of transparent polyurethane or other synthetic films of low reflectance, evenly coated on one side with a synthetic adhesive mass. The adhesive is cohesive and inactivated by contact with moisture and will not therefore stick to moist skin or the wound bed. The films are permeable to water vapor, oxygen, and carbon dioxide but occlusive to water and bacteria and have highly elastomeric and extensible properties. They are conformable, resistant to shear and tear, sterile and particle free. 

Major polymer applications aircraft interiors, multipin connectors, coil bobbins, integrated circuits sockets, fiber optics connectors, dip switches, automotive fuses, printed circuit boards, transformer wire coatings, microwave cookware, sight glasses, membranes, medical applications (due to the resistance to different methods of sterilization), coatings... 

S-EB-S polymers are very compatible with paraffinic or naphthenic oils because of their lower midblock solubility parameter. As much as 200 parts of some of these oils can be added without bleedout. The articles have excellent heat stability, and the resistance of pigmented stocks to degradation from outdoor exposure is very good. Several compounds based on S-EB-S and S-B-S block polymers have been developed for special purposes. These include pharmaceutical goods, wire and cable coatings, and automotive applications (94). In pharmaceutical applications, the ability of some molded products to withstand steam sterilization as... 

The modification of polymers and fibrous surfaces to alter the porosity, wettability and other characteristics of polymeric substrates, will enable the prodnction of implants and biomedical devices which exhibit greater resistance to microbial adhesion and biofilm formation. A nnmber of polymers have been developed that can be incorporated into cellulose and other materials, which will provide significant advances in many fields snch as food packaging, textiles, wound dressings, coating of catheter tnbes and sterile surfaces. 

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