Title:
POLYURETHANE HYDROGEL CONTACT LENS
Document Type and Number:
WIPO Patent Application WO2002000749
Kind Code:
A3
Abstract:
A prepolymer is prepared by reacting a mixture containing (a) at least one multifunctional compound, (b) at least one diisocyanate, and (c) at least one diol. The diol has a weight average molecular weight of at most 6000. The prepolymer, when reacted with an excess of water, forms a hydrogel polymer. The mixture of the prepolymer and water may be reaction molded, and used to form a contact lens.
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Inventors:
CARLSON GREGORY (US)
BLAIR EDGAR ALAN (US)
WACHTEL PETER (US)
QUINN MICHAEL H (US)
WALLACH JOSHUA (US)
BLAIR EDGAR ALAN (US)
WACHTEL PETER (US)
QUINN MICHAEL H (US)
WALLACH JOSHUA (US)
Application Number:
PCT/EP2001/007160
Publication Date:
May 16, 2002
Filing Date:
June 25, 2001
Export Citation:
Assignee:
JESSEN WESLEY CORP (US)
NOVARTIS AG (CH)
CARLSON GREGORY (US)
BLAIR EDGAR ALAN (US)
WACHTEL PETER (US)
QUINN MICHAEL H (US)
WALLACH JOSHUA (US)
NOVARTIS AG (CH)
CARLSON GREGORY (US)
BLAIR EDGAR ALAN (US)
WACHTEL PETER (US)
QUINN MICHAEL H (US)
WALLACH JOSHUA (US)
International Classes:
C08G18/10; C08G18/12; C08G18/48; C08G18/66; G02C7/04; C08G18/79; G02B1/04; (IPC1-7): C08G18/10; C08G18/66; C08G18/79; G02B1/04
Foreign References:
| FR2539135A1 | 1984-07-13 | |||
| EP0189484A1 | 1986-08-06 | |||
| US3719050A | 1973-03-06 | |||
| US4810582A | 1989-03-07 | |||
| US4886866A | 1989-12-12 |
Other References:
JOURNAL OF APPLIED POLYMER SCIENCE, vol. 59, no. 3, 18 January 1996 (1996-01-18), New York, US, pages 459 - 466, XP000556508
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