Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
Inventor
active
Poly-N,N-hydroxyalkylamides of polybasic carboxylic acids and a
Polyisocyanate mixtures, process for their production and their
Process for the preparation of aromatic polyisocyanates containi
Process for the preparation of highly elastic polyurethane flexi
Process for the preparation of polyurethane foams
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