Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
Inventor
active
Epoxy resins, epoxy resin mixtures, epoxy resin compositions...
Phenolic resin, process for production thereof, epoxy resin,...
Polyhydric phenol compounds, epoxy resins, epoxy resin...
Polyphenol resin, process for its production, epoxy resin...
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