Claims
- 1. A selenium-containing aliphatic compound having 2 or more functional groups which is represented by formula (4):(Z3)—(X2)s (4) wherein Z3 represents an Se atom or an alkylene group including at least one Se atom; X2 represents a functional group selected from an acryloyl group, methacryloyl group and thioepoxy group, or an alkyl residue having this functional group; and s represents an integer from 2 to 6.
- 2. The selenium-containing aliphatic compound according to claim 1 which is represented by formula (5):X1—Se—X2 (5) wherein, X1 and X2 are the same or different, and they are each independently selected from the group consisting of: in which Y3 represents a sulfur atom, oxygen atom or Se atom, and R represents a hydrogen atom or a methyl group.
- 3. A composition which contains at least one selenium-containing aliphatic compound of claim 1.
Priority Claims (4)
Number |
Date |
Country |
Kind |
9-037846 |
Feb 1997 |
JP |
|
9-289648 |
Oct 1997 |
JP |
|
9-300344 |
Oct 1997 |
JP |
|
9-304688 |
Nov 1997 |
JP |
|
Parent Case Info
This application is a divisional of U.S. application Ser. No. 09/934,858 filed on Aug. 23, 2001 now U.S. Pat. No. 6,482,918, which is a division of Ser. No. 09/570,613 filed on May 12, 2000, now U.S. Pat. No. 6,303,747, which is a division of Ser. No. 09/171,468 filed on Oct. 19, 1998, now U.S. Pat. No. 6,124,424, which was a national stage filing under 35 U.S.C. §371 of International Application No. PCT/JP98/00714 filed on Feb. 23, 1998, which International Application was not published by the International Bureau in English on Aug. 27, 1998.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
4320939 |
Mueller |
Mar 1982 |
A |
4320940 |
Mueller et al. |
Mar 1982 |
A |
5604280 |
Pozzo et al. |
Feb 1997 |
A |
Foreign Referenced Citations (2)
Number |
Date |
Country |
3-166203 |
Jul 1991 |
JP |
9-20770 |
Jan 1997 |
JP |
Non-Patent Literature Citations (1)
Entry |
Chem. Abstract, 129-246327 “Selenium-containing transparent optical materials and plastic lenses with high refractive index and their manufacture”, Okazaki et al, 1998. |