Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
Inventor
active
Flexible elastic polyurethane films a process for their preparat
Production of low-fogging polyurethane foams, and specific poly-
Production of low-fogging polyurethane foams, and specific polyo
Production of rigid or semirigid polyurethane foams and composit
Thermoplastic polyurethanes and their preparation
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