47+ Polyurethane Siding. Most exterior polys can be used indoors, but interior polys should never be used outdoors; They lack the additives that protect exterior finishes from uv rays.
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While most polyurethanes are thermosetting polymers that do not melt when heated. Solution if your pur contains crosslinks (which is frequently the case even in polyurethanes which should be. Although the terms urethane and polyurethane are often used interchangeably, these urethane is a crystalline compound with the chemical formula c3 h7 no2.
Side a is mostly made up of isocyanates.
Polyurethane provides an extremely durable finish. Oil, water and combined which one is best? The a side of a spray polyurethane system is commonly comprised of methylene diphenyl diisocyanate (mdi) and polymeric methylene diphenyl diisocyanate (pmdi). Basf polyurethanes will only use your data to reply to your request.
