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US 8,008,414 B2Granted
Organic antimony compound, process for producing the same, living radical polymerization initiator, process for producing polymer using the same, and polymer
AssigneesOtsuka Chemical Co., Ltd., Japan Science and Technology Agency
InventorsShigeru Yamago, Biswajit Ray, Takashi Kameshima, Kazuhiro Kawano
Life of this patent
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Abstract
An organoantimony compound represented by the formula (1), processes for producing polymers with use of the compound, and polymers wherein R1 and R2 are C1-C8 alkyl, aryl, substituted aryl or an aromatic heterocyclic group, R3 and R4 are each a hydrogen atom or C1-C8 alkyl, and R5 is aryl, substituted aryl, an aromatic heterocyclic group, oxycarbonyl or cyano.
Claims25
An organoantimony compound represented by the formula (1):
- wherein R1 and R2 are C1-C8 alkyl, aryl, substituted aryl, or an aromatic heterocyclic group;
- R3 and R4 are each a hydrogen atom or C1-C8 alkyl;
- and R5 is an aryl group unsubstituted or substituted by halogen, hydroxyl, alkoxyl, amino, nitro, cyano, —CORa (wherein Ra is C1-C8 alkyl, aryl, C1-C8 alkoxyl, or aryloxyl), sulfonyl, or trifluoromethyl, an aromatic heterocyclic group, oxycarbonyl, or cyano;
- provided that R3 and R4 are not hydrogen atoms simultaneously.
1 more element
A living radical polymerization initiator represented by the formula (2):
- wherein R1 and R2 are C1-C8 alkyl, aryl, substituted aryl, or an aromatic heterocyclic group;
- R3 and R4 are each a hydrogen atom or C1-C8 alkyl;
- and R6 is an aryl group unsubstituted or substituted by halogen, hydroxyl, alkoxyl, amino, nitro, cyano, —CORa (wherein Ra is C1-C8 alkyl, aryl, C1-C8 alkoxyl, or aryloxyl), sulfonyl, or trifluoromethyl, an aromatic heterocyclic group, oxycarbonyl, or cyano.
Dependencies are inferred from the claim text.