申请人:Ma Qinggao
公开号:US20060283699A1
公开(公告)日:2006-12-21
Disclosed herein is a method for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of at least one nitroso inhibitor of the structure:
wherein R
1
, R
2
, R
3
, and R
4
are independently selected from the group consisting of hydrogen, nitro, nitroso, halogen, COOR wherein R is hydrogen or alkyl, alkyl, and heteroatom-substituted alkyl; or adjacent groups R
1
, R
2
, R
3
, and R
4
can be taken together to form a substituted or unsubstituted fused six-membered ring.
Also disclosed is a composition of matter comprising: A) an ethylenically unsaturated monomer and B) at least one nitroso compound of the above-described structure.