Claims
- 1. A resin having a high refractive index and a high ABBE number, said resin being a polymer comprising units derived from a sulphur-containing unsaturated compound represented by the formula (II): ##STR16## wherein R.sup.1 represents a hydrogen atom or a methyl group; R.sup.2 and R.sup.3 are identical or different and each represents a hydrogen atom, methyl group or ethyl group; and ##STR17## represents benzyl, pehnylethyl, phenylpropyl, phenylbutyl, chlorophenylmethyl, dibromophenylmethyl, tribromophenylmethyl, methylthiophenylmethyl, di(methylthio)phenylmethyl, or methylphenylmethyl, and m is 1, 2 or 3.
- 2. The resin of claim 1 in which the polymer has a refractive index of at least 1.62 and an ABBE number of at least 30.
- 3. The resin of claim 1 in which the polymer has a refractive index of at least 1.63 and an ABBE number of at least 32.
Priority Claims (1)
Number |
Date |
Country |
Kind |
1-26700 |
Feb 1989 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 07/476,346, filed Feb. 7, 1990, now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4931521 |
Matsuda |
Jun 1990 |
|
Foreign Referenced Citations (2)
Number |
Date |
Country |
273710 |
Jul 1988 |
EPX |
246511 |
Aug 1974 |
SUX |
Non-Patent Literature Citations (1)
Entry |
Chemical Abstracts, vol. 112, 19th Mar. 1990, p. 14, Abstract No. 99463u. |
Continuations (1)
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Number |
Date |
Country |
Parent |
476346 |
Feb 1990 |
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