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US 6,387,975 B1Granted
Crystalline ion-association substance, process for producing the same, and latent photopolymerization initiator
AssigneeAutex, Inc.
InventorShin Hiwasa
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Abstract
A photo-latent initiator for photopolymerization comprises crystalline ion-association substance having the general formula (I): [{C5(R1)n}2mMm]1+[{B(R2)4}−]l Said initiator can polymerize a cationically polymerizable organic substance only with light irradiation without additional heating. It is extremely stable when stored alone or in the form of a mixture with a cationically polymerizable organic substance.
Claims6
A photo-latent initiator for photopolymerization of cationically polymerizable organic material, wherein said initiator comprises a crystalline ion-association substance having a general formula (I):
- [C5(R1)n}2mMm]1+[{B(R2)4}−]l
- wherein M is a transition metal of center nucleus;
- C5 is a cyclopentadienyl group;
- R1 is an electron-donating substituent bonded to carbon atom of the cyclopentadienyl group;
- n is either 4 or 5;
- m is either 1 or 2;
- l is either 1 or 2;
- R2 is a ligand coordinated to boron atom (B), and four (R2)s are the same to each other.
5 more elements
Dependencies are inferred from the claim text.