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Better living through chemistry.
The coatings might incorporate a binder material such as polymer (occasionally referred to as a matrix or silicone matrix) and might comprise particles embedded within the binder. The particles could have high hardness to enhance the durability of these coatings that are protective.

Patently Apple:
This week the US Patent & Trademark Office published a patent application from Apple that relates to brand new protective coatings being added to Apple devices in the future that will prevent damage to home structures, transparent members connected with optical part windows and screens, along with other device structures.