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2. Polyurethane - Wikipedia

   en.wikipedia.org/wiki/Polyurethane

   Polyurethane synthesis, wherein the urethane groups −NH−(C=O)−O− link the molecular units A kitchen sponge made of polyurethane foam . Polyurethane (/ ˌ p ɒ l i ˈ jʊər ə ˌ θ eɪ n,-j ʊəˈr ɛ θ eɪ n /; [1] often abbreviated PUR and PU) refers to a class of polymers composed of organic units joined by carbamate (urethane) links.

3. Enamel paint - Wikipedia

   en.wikipedia.org/wiki/Enamel_paint

   Spray can with enamel paint. Enamel paint is paint that air-dries to a hard, usually glossy, finish, used for coating surfaces that are outdoors or otherwise subject to hard wear or variations in temperature; it should not be confused with decorated objects in "painted enamel", where vitreous enamel is applied with brushes and fired in a kiln.

4. Paint sheen - Wikipedia

   en.wikipedia.org/wiki/Paint_sheen

   The sheen [4] or gloss level of a paint is principally determined by the ratio of resinous, adhesive binder, which solidifies after drying, and solid, powdery pigment.The more binder the coating contains, the more regular reflection will be made from its smooth surface; conversely, with less binder, grains of pigment become exposed to the surface, scattering the light and providing matte ...

5. Varnish - Wikipedia

   en.wikipedia.org/wiki/Varnish

   Varnish on wood stairs Varnished oak floor. Varnish is a clear transparent hard protective coating or film. It is not to be confused with wood stain.It usually has a yellowish shade due to the manufacturing process and materials used, but it may also be pigmented as desired.

6. Rust-Oleum - Wikipedia

   en.wikipedia.org/wiki/Rust-Oleum

   Rust-Oleum products no longer contain whale oil, instead using resins derived from alkyds, polyurethanes, epoxies, latex, etc. Rust-Oleum remained a family-owned company until 1994, when it was acquired by current owner RPM International Inc. [2] In 2015, the company reached one billion dollars in revenue. [3]

7. Thermoplastic polyurethane - Wikipedia

   en.wikipedia.org/wiki/Thermoplastic_polyurethane

   Thermoplastic polyurethane (TPU) refers to polyurethane polymers which exhibit thermoplasticity; that is, they become pliable when heated and harden when cooled.