申请人:Petrolite Corporation
公开号:US04281126A1
公开(公告)日:1981-07-28
This invention relates to the following compounds: ##STR1## Process for their preparation and uses thereof, where R.sub.1 and R.sub.2 are substituted groups, and R.sub.6, R.sub.5, R.sub.4 and R.sub.3 are hydrogen or substituted groups.
这项发明涉及以下化合物:##STR1## 它们的制备方法和用途,其中R.sub.1和R.sub.2是取代基,而R.sub.6、R.sub.5、R.sub.4和R.sub.3是氢原子或取代基。