Back to results
US 7,923,520 B2Granted
High refractive index monomers and (co)polymers prepared therefrom
AssigneeProcornea Holding B.V.
InventorsBernardus Franciscus Maria Wanders, Henk Haitjema
Life of this patent
Estimating the term…
Abstract
The present invention relates to high refractive index monomers according to formula (I) and (co)polymers comprising such high refractive index monomers. The 5 (co)polymers are highly suitable for the manufacture of optical articles, in particular flexible optical articles, more in particular intraocular lenses.
Claims24
A high refractive index monomer according to formula (I):
- wherein:
- R1 is H or CH3;
- X is O or S;
- R2 is independently H or linear or branched C1-C6 alkyl;
- n=3 to 10;
- m=1- 10;
- R3 is linear or branched C1-C3 alkylene;
- Y is O or S;
- p=0- 5;
- R4 is C6-C18 aryl or heteroaryl;
- q is 2 or 3;
- o is 0 or 1;
- when q=2, then o is 1;
- when q=3;
- then o is 0;
- and
- R5 is independently H or linear or branched C1-C6 alkyl.
14 more elements
The high refractive index monomer according to formula (II):
- wherein:
- R1 is H or CH3;
- X is O or S;
- R2 is independently H or linear or branched C1-C6 alkyl;
- a=1 to 5;
- R3 is linear or branched C1-C3 alkylene;
- Y is O or S;
- d=0-5;
- R4 is C6-C18 aryl or heteroaryl;
- b is 2 or 3;
- c is 0 or 1;
- when b=2, then c is 1;
- when b=3;
- then c is 0;
- and
- R5 is independently H or linear or branched C1-C6 alkyl.
13 more elements
A polymer comprising:
- (a) a high refractive index monomer according to formula (I):
- wherein:
- R1 is H or CH3;
- X is O or S;
- R2 is independently H or linear or branched C1-C6 alkyl;
- n=3 to 10;
- m=1-10;
- R3 is linear or branched C1-C3 alkylene;
- Y is O or S;
- p=0-5;
- R4 is C6-C18 aryl or heteroaryl;
- q is 2 or 3;
- o is 0 or 1;
- when q=2, then o is 1;
- when q=3;
- then o is 0;
- and
- R5 is independently H or linear or branched C1-C6 alkyl;
- or
- (b) a high refractive index monomer according to formula (II):
- wherein:
- R1 is H or CH3;
- X is O or S;
- R2 is independently H or linear or branched C1-C6 alkyl;
- a=1 to 5;
- R3 is linear or branched C1-C3 alkylene;
- Y is O or S;
- d=0-5;
- R4 is C6-C18 aryl or heteroaryl;
- b is 2 or 3;
- c is 0 or 1;
- when b=2, then c is 1;
- when b=3;
- then c is 0;
- and
- R5 is independently H or linear or branched C1-C6 alkyl,
- wherein said polymer have a glass transition temperature Tg of less than 25° C.
34 more elements
Dependencies are inferred from the claim text.