发明授权
US4617253A Polymeric pyridinium ylides and products prepared from same 失效
聚合吡啶鎓叶立德及其制备的产品

Polymeric pyridinium ylides and products prepared from same
摘要:
Polymers containing pyridinium ylide moieties are subjected to actinic irradiation to convert the pyridinium ylide moieties to water-insoluble or hydrophobic N-acyl-diazepine polymers. The polymeric pyridinium ylides can be used for the waterproofing or hydrophobization of surfaces and for the production of printing plates, photoresists, printed circuit boards and the like.
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