Radically polymerizable compound having a cyclic...

Details Radically polymerizable compound having a cyclic... Radically polymerizable compound having a cyclic...

2011-05-10

2011-05-10

Wu, David (Department: 1762)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S257000, C549S035000, C549S037000

Reexamination Certificate

active

07939612

ABSTRACT:
A radically polymerizable compound having a group represented by formula (1)(In the formula, R1to R3each independently represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, X represents an alkylene group having 1 to 4 carbon atoms.) and a radically polymerizable double bond and a composition for an optical material comprising the same have a high refractive index and excellent transparency and are hard to be oxidized in thermal curing and useful as an optical material with little tinting.

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STN Search Results (Dec. 29, 2010).
Wonmun Choi, et al., “A Novel Construction of Living Polymerization by Neighboring Group Participation: Living Cationic Ring-Opening Polymerization of a Five-Membered Cyclic Dithiocarbonate”, Macromolecules, 1998, pp. 9093-9095, vol. 31, No. 25.
Bungo Ochiai, et al., “Carbon dioxide and carbon disulfide as resources for functional polymers”, Progress in Polymer Science, 2005, pp. 183-215, vol. 30, No. 2, Pergamon Press.

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