Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
Inventor
active
.omega.,.omega.'-Bis-[4-amino-3-aminomethyl-piperidyl-(1)]-alkan
1,2-Oxaphospholanes
2,5-Di-(.omega.-aminoalkyl-1')-pyrazines
2-arylmethyliminopyrazines pyrazines, compositions and method of
5-acylaminopyrimidines
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