Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
Inventor
active
Polycondensation resins and polyaddition resins produced by...
Polyester polyols liquid at room temperature and their preparati
Polyetherpolycarbonatediols
Preparation of cellular polyurethane elastomers using polyether
Preparation of polyurethane elastomers, and mixtures suitable fo
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