There are anti-scratch coatings that increase the surface hardness of lenses (an important feature when using plastic lenses) and anti-reflective (AR) coatings that eliminate almost all glare.

By preventing oxygen from getting to the iron ;

oil, paint, coatings, etc.

An anti-glare material is designed to reduce or eliminate the reflection of strong or dazzling light.

Yes, some duvets are treated to be stain resistant. Some are also treated to be anti-fungal, anti-bacterial, and have dust-mite protection.

Philip A. Schweitzer has written:

'Corrosion-resistant piping systems' -- subject(s): Piping, Corrosion

'Fundamentals of corrosion'

'Corrosion of polymers and elastomers'

'Corrosion-resistant linings and coatings' -- subject(s): Protective coatings, Corrosion and anti-corrosives

'Corrosion resistance tables' -- subject(s): Tables, Corrosion and anti-corrosives