Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
Inventor
active
Cyclization of acrylic fiber
Ester interchange polyester preparation with alkali metal fluori
Melt-processible aromatic containing copolyamide from 3,4'-bis (
Method for making PBO and PBT polymers
Polybenzobisthiazole and polybenzobisoxazole fibers of improved
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