Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
Inventor
active
Benzo[b,f]thiepan derivitives
Benzo[b,f]thiepin derivatives
Benzo[b,f]thiepin derivatives and process for producing the same
Carboxylic acid ester compounds, and their related matters and m
Composite particulate material for resin reinforcement, producti
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