Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
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Aqueous synthetic resin dispersions
Emulsified mannich acrylamide polymers
Method for the production of methacrylic resin molded items
Method of making hydrophobic copolymers hydrophilic
Preparation of polymers from olefinically unsaturated monomers
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