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2. Varnish - Wikipedia

   en.wikipedia.org/wiki/Varnish

   A table green wood-stained and varnished with three layers of polyurethane varnish. Polyurethane varnishes are typically hard, abrasion-resistant, and durable coatings. They are popular for hardwood floors but are considered by some wood finishers to be difficult or unsuitable for finishing furniture or other detailed pieces. Polyurethanes are ...

3. Wood flooring - Wikipedia

   en.wikipedia.org/wiki/Wood_flooring

   Polyurethane – Polyurethane floor finishes were first introduced around 1942. Water-based urethane is harder than oil-modified polyurethane and is much safer for the user. Within both categories there are many variations and other names used to describe the finish.

4. List of polyurethane applications - Wikipedia

   en.wikipedia.org/wiki/List_of_polyurethane...

   Polyurethane materials are commonly formulated as paints and varnishes for finishing coats to protect or seal wood. This use results in a hard, abrasion-resistant, and durable coating that is popular for hardwood floors, but considered by some to be difficult or unsuitable for finishing furniture or other detailed pieces. Relative to oil or ...

5. Wood finishing - Wikipedia

   en.wikipedia.org/wiki/Wood_finishing

   Cures hard yet flexible, gloss or satin finish. Polyurethane oil based varnish: Slight ambering, comes in a variety of sheen Excellent protection against many substances, tough finish Durable after approx. 7 day curing period Relatively safe once VOCs evaporate, uses petroleum based solvents Moderate. Applied in coats with brush, roller or sprayer.

6. 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.

7. Flooring - Wikipedia

   en.wikipedia.org/wiki/Flooring

   The more force it takes to do so, the harder the wood. Hardwood floors can either be purchased as pre-finished planks or as planks that need to be sanded and finished in the home following installation. Manufacturers of pre-finished hardwood floors use varying materials for the finish, which usually include layers of polyurethane and aluminum ...