Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
Inventor
active
Aromatic diamine compound, preparation process of same and polyi
Aromatic diamine intermediates useful in the preparation of poly
Color-developer for pressure-sensitive recording sheets
Color-developing composition for pressure-sensitive recording sh
Color-developing phenolic-aldehyde composition for pressure-sens
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