Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
Inventor
active
High-rigidity ethylene-propylene copolymer and process for produ
Polypropylene resin for high-rigidity molded products
Propylene-ethylene copolymers for high-rigidity molded products
Whitening-resistant, highly melt-viscoelastic ethylene-propylene
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