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Polyurethane are recyclable, therefore, old, used or spent polyurethane should be sorted and recycled. we need to bear in mind that it takes more than 100years for polyurethane products to decay. Also, they are not biodegradable. Therefore, recycling is the way forward and in the case of some special polyurethane products such as Hospital wastes and the likes, the wastes should be treated before recycling.

Olaoluwa Ogunfeyitimi

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15y ago

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Can you apply polyurethane over old polyurethane for refinishing furniture?

Yes, you can apply polyurethane over old polyurethane when refinishing furniture. It is important to properly prepare the surface by sanding and cleaning it before applying the new coat of polyurethane for best results.


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The final coat of polyurethane may be rough due to factors such as improper application technique, dust or debris on the surface, or the use of old or expired polyurethane.


Can you sand off polyurethane to refinish a piece of furniture?

Yes, you can sand off polyurethane to refinish a piece of furniture. Sanding helps remove the old finish and prepares the surface for a new coat of polyurethane or another finish.


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Polyurethane can be recycled.


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It is not the best option . Always use polyurethane on polyurethane , acrylic on acrylic and etc ; Is even important to use them of the same brand .


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Yes, polyurethane is paintable.


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it should


Who invented polyurethane?

Otto Bayer invented polyurethane.


Can water-based polyurethane be applied over oil-based polyurethane?

Yes, water-based polyurethane can be applied over oil-based polyurethane after proper preparation and sanding.


Can you apply oil-based polyurethane over water-based polyurethane?

No, it is not recommended to apply oil-based polyurethane over water-based polyurethane as they are not compatible and may not adhere properly. It is best to stick with the same type of polyurethane for a consistent and durable finish.


Can I apply oil-based polyurethane over water-based polyurethane?

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