# US 5,703,143 A · Ocular lens material

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- Number: US 5,703,143 A
- Document ID: US5703143A
- Status: Granted
- Kind: A
- Application number: 08/590,600
- Filed: 1996-01-24
- Granted: 1997-12-30
- Earliest claimed: 1995-01-26
- Assignees: Menicon Co., Ltd.
- Inventors: Haruyuki Hiratani; Kazuhiko Nakada; Toshio Yamazaki; Shoji Ichinohe
- Web page: https://patentgrep.com/patent/US5703143A

## CPC

- G02B 1/043: {Contact lenses}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

A transparent ocular lens material comprising a silicon-containing polymer having a recurring unit represented by the general formula (I): ##STR1## wherein each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is independently hydrogen atom, an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms or a group represented by the general formula (lI): ##STR2## in which each of R.sup.5, R.sup.6 and R.sup.7 is independently an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms or phenyl group. The ocular lens material has excellent transparency, high oxygen permeability and heat resistance, and excellent ultraviolet-ray absorbing properties and forming and processing properties, and has a relatively high refractive index.

## Claims

### Claim 1

A transparent ocular lens material comprising a silicon-containing polymer having a recurring unit represented by the general formula (I): ##STR58## wherein each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is independently hydrogen atom, an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms or a group represented by the general formula (II): ##STR59## in which each of R.sup.5, R.sup.6 and R.sup.7 is independently an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms or phenyl group, and at least one of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is the group represented by the general formula (II), wherein the content of said silicon-containing polymer is 50 to 100% by weight.

### Claim 2

A transparent ocular lens material comprising
(A) a silicon-containing polymer having a recurring unit represented by the general formula (I): ##STR60## wherein each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is independently hydrogen atom, an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms or a group represented by the general formula (II): ##STR61## in which each of R.sup.5, R.sup.6 and R.sup.7 is independently an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms or phenyl group, and at least one of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is the group represented by the general formula (II), and
(B) a condensation polymer having a recurring unit represented by the general formula (III): ##STR62## wherein R.sup.8 is --O--, --CO--, --SO.sub.2 --, --CH.sub.2 --, --C(CH.sub.3).sub.2 --, --C(CF.sub.3).sub.2 -- or a group represented by the general formula: ##STR63## in which R.sup.10 is --C(CH.sub.3).sub.2 -- or --C(CF.sub.3).sub.2 --, and R.sup.9 is a group represented by the general formula: ##STR64## in which l is an integer of 1 to 3, m is an integer of 1 to 15 and n is an integer of 1 to 3, a group represented by the general formula: ##STR65## in which p is an integer of 1 to 10, a group represented by the general formula: ##STR66## in which q is an integer of 1 to 3, r is an integer of 1 to 10 and s is an integer of 1 to 3, a group represented by the general formula: ##STR67## in which t is an integer of 1 to 10, a group represented by the general formula: ##STR68## in which u is an integer of 1 to 3 and v is an integer of 1 to 3, a group represented by the general formula: ##STR69## in which each of R.sup.11, R.sup.12, R.sup.13 and R.sup.14 is independently hydrogen atom or an alkyl group having 1 to 5 carbon atoms, or a group represented by the general formula: ##STR70## in which R.sup.15 is --C(CH.sub.3).sub.2 --, --C(CF.sub.3).sub.2 --, --O--, a group represented by the formula: ##STR71## a group represented by the general formula: ##STR72## in which R.sup.18 is --SO.sub.2 --, --C(CH.sub.3).sub.2 -- or --C(CF.sub.3).sub.2 --, or a direct bond, and each of R.sup.16 and R.sup.17 is independently an alkyl group having 1 to 3 carbon atoms, a fluoroalkyl group having 1 to 3 carbon atoms, hydrogen atom, hydroxyl group or carboxyl group, wherein the content of said silicon-containing polymer (A) is 50 to 100% by weight.

### Claim 3 (depends on 1)

The ocular lens material of claim 1, Wherein the ratio of numbers of the group represented by the general formula (II) which is incorporated in R.sup.1, R.sup.2, R.sup.3 and R.sup.4 of said silicon-containing polymer to the total numbers of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 of the polymer is 2 to 100% by mole.

### Claim 4 (depends on 2)

The ocular lens material of claim 2, wherein the ratio of numbers of the group represented by the general formula (II) which is incorporated in R.sup.1, R.sup.2, R.sup.3 and R.sup.4 of said silicon-containing polymer (A) to the total numbers of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 of the polymer (A) is 2 to 100% by mole.