Contact lens with phosphorylcholine-modified polyvinylalcohols therein

1. A soft contact lens, comprising: a lens bulk material which is a crosslinked polymeric material having a polymer matrix; and at least one non-polymerizable preformed phosphorylcholine-containing polymer which each comprises (a) first repeating units of vinyl alcohol and/or vinyl acetate and (b) second repeating units of 6-membered acetal ring substituted with a phosphorylcholine-containing group, wherein the non-polymerizable preformed phosphorylcholine-containing polymer is not covalently attached to the crosslinked polymeric material and is distributed within the polymer matrix.

2. The soft contact lens of claim 1 , wherein said at least one non-polymerizable preformed phosphorylcholine-containing polymer each comprises (a) the first repeating units in an amount, designated as M1, of from about 60% to about 99% by mole, wherein the first repeating units have a formula of

in which R is H or —C(O)CH 3 , and (b) the second repeating units in an amount, designated as M2, of from about 1% to about 40% by mole, wherein the second repeating units have a formula of

in which L 1 is a C 1 -C 6 divalent alkylene radical and PC is a monovalent zwitterionic group of

in which t1 is an integer of 1 to 5 and R 0 , R 0 ′ and R 0 ″ independently of one another are C 1 -C 4 alkyl, provided that (M1+M2) is greater than about 90% by mole.

3. The soft contact lens of claim 2 , wherein the soft contact lens comprises at least two non-polymerizable preformed phosphorylcholine-containing polymers, wherein one of the two non-polymerizable preformed phosphorylcholine-containing polymers has a number-average molecular weight of from 10,000 to 100,000 Daltons while the other has a number-average molecular weight of from 200,000 to 2,000,000.

4. The soft contact lens of claim 3 , wherein the weight proportion of the two non-polymerizable preformed phosphorylcholine-containing polymers is from 1:1 to 5:1.

5. A coated soft contact lens, comprising:

a lens body, wherein the lens body comprises a crosslinked polymeric material comprising repeating units of at least one arylborono-containing vinylic monomer; and

a coating thereon, wherein the coating comprises a layer of a phosphorylcholine-containing polymer which comprises

(a) repeating units of vinyl alcohol, and

(b) phosphorylcholine-containing repeating units each having a formula of

in which L 1 is a C 1 -C 6 divalent alkylene radical and PC is a monovalent zwitterionic group of

in which t1 is an integer of 1 to 5 and R 0 , R 0 ′ and R 0 ″ independently of one another are C 1 -C 4 alkyl,

wherein the coating is covalent attached onto the lens body through linkages each formed between one of boronic acid groups of the crosslinked polymeric material and one of the 1,3-diol moieties of the phosphorylcholine-containing polymer.

6. The coated soft contact lens of claim 5 , wherein the arylborono-containing vinylic monomer is a vinylic monomer of formula (VIII)

in which:

R b is H, NO 2 , F, Cl, or CF 3 ;

Q is a monovalent radical of

L 2 is a direct bond, a C 1 -C 4 alkylene divalent radical, a divalent radical of

in which Y 1 is CH(OH) or a C 1 -C 4 alkylene divalent radical, Y 2 is a C 1 -C 4 alkylene divalent radical, and R o is H or a C 1 -C 4 alkyl.

7. The coated soft contact lens of claim 6 , wherein the crosslinked polymeric material is a non-silicone hydrogel material.

8. The coated soft contact lens of claim 7 , wherein the non-silicone hydrogel material comprises at least 50% by mole of repeating units of at least one hydroxyl-containing vinylic monomer.

9. The coated soft contact lens of claim 7 , wherein the non-silicone hydrogel material comprises at least 50% by mole of repeating units of vinyl alcohol.

10. The coated soft contact lens of claim 7 , wherein the non-silicone hydrogel material is a crosslinking product of at least one water-soluble actinically-polymerizable polyvinyl alcohol prepolymer in the presence or absence of a vinylic monomer and/or vinylic crosslinking agent, wherein the water-soluble actinically-polymerizable polyvinyl alcohol prepolymer comprises:

repeating vinyl alcohol units of

and

repeating crosslinking units of formula (I);

in which

R 3 is hydrogen or a C 1 -C 6 alkyl group;

R 4 is a C 1 -C 6 alkylene divalent radical;

R 5 is hydrogen or C 1 -C 6 alkyl;

R 6 is an ethylenically unsaturated group of

in which q1 and q2 independently of each another are zero or one, and R 7 and R 8 independently of one another are a C 2 -C 8 alkylene divalent radical, R 9 is C 2 -C 8 alkenyl.

11. The coated soft contact lens of claim 10 , wherein the water-soluble actinically-polymerizable polyvinylalcohol prepolymer further comprises repeating units of formula (II)

in which R UV is a monovalent radical of any one of formula (III)-(VII)

in which:

R o is H or CH 3 ;

R 11 , R 12 and R 12 ′ independent of one other are H, CH 3 , CCl 3 , CF 3 , Cl, Br, NR′R″ in which R′ and R″ independent of each other are H or C 1 -C 4 alkyl, OH, or OCH 3 ;

R 11 ′ independent of each other are H, CH 3 , CCl 3 , CF 3 , Cl, Br, NR′R″ in which R′ and R″ independent of each other are H or C 1 -C 4 alkyl, OH, OCH 3 , SO 3 H, or SO 3 − Na + ;

R 13 and R 14 independent of each other are H or a first hydrophilic group which is

provided that at least one of R 13 and R 14 is the first hydrophilic group;

q3 is zero or 1;

n1 is an integer of 2 to 25;

R 15 is H, *—COOH, *—CONH—C 2 H 4 —(OC 2 H 4 ) n1 —OCH 3 , or *—CONH—C 2 H 4 —(OC 2 H 4 ) n1 —OH;

one of R 16 and R 17 is H or a second hydrophilic group which is *—CH 2 —(OC 2 H 4 ) n1 —OCH 3 , *—

while the other of R 16 and R 17 is

R 18 is CH 3 , C 2 H 5 ,

R 19 is SO 3 Na,

R 19 ′ is H, SO 3 Na,

R 20 is methyl or ethyl;

L 11 is a linkage of

L 12 is a linkage of

L 13 is a linkage of

X1 is O or NR o ;

one of R 21 and R 22 is H or a second hydrophilic group which

is

while the other of R 21 and R 22 is a divalent radical of

12. The coated soft contact lens of claim 6 , wherein the crosslinked polymeric material is a silicone hydrogel material which comprises (a) repeating units of at least one silicone-containing vinylic monomer and/or at least one silicone-containing vinylic crosslinker and (b) repeating units of at least one one hydrophilic vinylic monomer.

13. The coated soft contact lens of claim 12 , wherein the silicone hydrogel material comprises repeating units of at least one hydrophilic N-vinyl amide monomer.

14. The coated soft contact lens of claim 12 , wherein the silicone hydrogel material has an oxygen permeability of at least 40 barrers.

15. The coated soft contact lens of claim 14 , having: a water content of from about 10% to about 80% by weight measured at a temperature of from about 22° C. to 28° C.; an elastic modulus of from about 0.2 MPa to about 1.5 MPa; a UVB transmittance of about 10% or less between 280 and 315 nanometers; a UVA transmittance of about 30% or less between 315 and 380 nanometers; and a Violet transmittance of from 0% to about 70% between 380 nm and 440 nm, when being fully hydrated.

16. An ophthalmic solution, comprising:

from about 0.01% to about 2% by weight of a phosphorylcholine-containing polymer which comprises (a) repeating units of vinyl alcohol and (b) phosphorylcholine-containing repeating units each having a formula of

in which L 1 is a C 1 -C 6 divalent alkylene radical and PC is a monovalent zwitterionic group of

in which t1 is an integer of 1 to 5 and R 0 , R 0 ′ and R 0 ″ independently of one another are C 1 -C 4 alkyl; and at least one buffering agent for maintaining a pH of from about 6.5 to about 9.0, wherein the ophthalmic solution has a pH of from about 6.5 to about 9.0, a tonicity of from about 200 to about 450 milliosmol (mOsm) at 25° C., and a viscosity of from about 1 centipoise to about 5 centipoises at 25° C.

17. The ophthalmic solution of claim 16 , wherein the ophthalmic solution is a packaging solution for packaging and sterilizing contact lenses in packages.

18. The soft contact lens of claim 4 , wherein the crosslinked polymeric material is a non-silicone hydrogel material.

19. The soft contact lens of claim 18 , wherein the non-silicone hydrogel material comprises at least 50% by mole of repeating units of at least one hydroxyl-containing vinylic monomer.

20. The soft contact lens of claim 18 , wherein the non-silicone hydrogel material comprises at least 50% by mole of repeating units of vinyl alcohol.

21. The soft contact lens of claim 18 , wherein the non-silicone hydrogel material is a crosslinking product of at least one water-soluble actinically-polymerizable polyvinyl alcohol prepolymer in the presence or absence of a vinylic monomer and/or vinylic crosslinking agent, wherein the water-soluble actinically-polymerizable polyvinyl alcohol prepolymer comprises:

repeating vinyl alcohol units of

and

repeating crosslinking units of formula (I):

in which

R 3 is hydrogen or a C 1 -C 6 alkyl group;

R 4 is a C 1 -C 6 alkylene divalent radical;

R 5 is hydrogen or C 1 -C 6 alkyl;

R 6 is an ethylenically unsaturated group of

in which q1 and q2 independently of each another are zero or one, and R 7 and R 8 independently of one another are a C 2 -C 8 alkylene divalent radical, R 9 is C 2 -C 8 alkenyl.

22. The soft contact lens of claim 21 , wherein the water-soluble actinically-polymerizable polyvinylalcohol prepolymer further comprises repeating units of formula (II)

in which R UV is a monovalent radical of any one of formula (III)-(VII)

in which:

R o is H or CH 3 ;

R 11 , R 12 and R 12 ′ independent of one other are H, CH 3 , CCl 3 , CF 3 , Cl, Br, NR′R″ in which R′ and R″ independent of each other are H or C 1 -C 4 alkyl, OH, or OCH 3 ;

R 11 ′ independent of each other are H, CH 3 , CCl 3 , CF 3 , Cl, Br, NR′R″ in which R′ and R″ independent of each other are H or C 1 -C 4 alkyl, OH, OCH 3 , SO 3 H, or SO 3 − Na + ;

R 13 and R 14 independent of each other are H or a first hydrophilic group which is

provided that at least one of R 13 and R 14 is the first hydrophilic group;

q3 is zero or 1;

n1 is an integer of 2 to 25;

R 15 is H, *—COOH, *—CONH—C 2 H 4 —(OC 2 H 4 ) n1 —OCH 3 , or *—CONH—C 2 H 4 —(OC 2 H 4 ) n1 —OH;

one of R 16 and R 17 is H or a second hydrophilic group which is

while the other of R 16 and R 17 is

R 18 is CH 3 , C 2 H 5 ,

R 19 is SO 3 Na,

R 19 ′ is H, SO 3 Na,

R 20 is methyl or ethyl;

L 11 is a linkage of

L 12 is a linkage of

L 13 is a linkage of

X1 is O or NR o ;

one of R 21 and R 22 is H or a second hydrophilic group which is

is

while the other of R 21 and R 22 is a divalent radical of

23. The soft contact lens of claim 4 , wherein the crosslinked polymeric material is a silicone hydrogel material which comprises (a) repeating units of at least one silicone-containing vinylic monomer and/or at least one silicone-containing vinylic crosslinker and (b) repeating units of at least one one hydrophilic vinylic monomer.

24. The soft contact lens of claim 23 , wherein the silicone hydrogel material comprises repeating units of at least one hydrophilic N-vinyl amide monomer.

25. The soft contact lens of claim 23 , wherein the silicone hydrogel material has an oxygen permeability of at least 40 barrers.

26. The soft contact lens of claim 25 , having: a water content of from about 10% to about 80% by weight measured at a temperature of from about 22° C. to 28° C.; an elastic modulus of from about 0.2 MPa to about 1.5 MPa; a UVB transmittance of about 10% or less between 280 and 315 nanometers; a UVA transmittance of about 30% or less between 315 and 380 nanometers; and a Violet transmittance of from 0% to about 70% between 380 nm and 440 nm, when being fully hydrated.