Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
Inventor
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Method for producing semi-rigid compact or cellular shaped...
Polyurethane elastomers and processes for their preparation...
Polyurethane elastomers which exhibit improved stability to...
Process for cleaning production plants for polyester polyols
Process for the CFC-free production of cellular polyurethane mol
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