Disc-shaped hot-runner system for injection moulding bottle stoppers - to minimise surplus material lost with each moulding

摘要

Controlling weeds by applying to the soil a cpd. Ar = phenyl or substd. phenyl, esp. phenyl substd. by Cl, alkyl, or NO2 R1,R2 = lower alkyl Claims restricted to above method using cpds. I with values underlined above. Herbicides, esp. for pre-emergence use.