Hydrophilic, soft and oxygen permeable copolymer composition

Claim 2

A composition of matter having the characteristics of increased hydrophilicity, softness after hydration and oxygen permeability, said composition being a copolymer of comonomers consisting essentially of: (a) about 15 to 65 parts by weight of at least one of the amide group containing monomers consisting of: (1) N-vinyl pyrrolidone having the structure ##STR12## wherein R 1 , R 2 and R 3 , which may be the same or different. are selected from a class consisting of hydrogen and C 1 -C 4 alkyl groups; and (2) acrylamide and methacrylamide having the structure ##STR13## wherein R 4 is selected from a class consisting of a methyl group and hydrogen; R 5 and R 6 , which may be the same or different, are selected from a class consisting of hydrogen and C 1 -C 4 alkyl groups, wherein the selection both of R 5 and R 6 from hydrogen is excluded; and (b) about 10 to 85 parts by weight of at least one of a polysiloxanylalkyl ester having the structure: ##STR14## wherein X and Y, which may be the same or different, are selected from a class consisting of C 1 -C 4 alkyl groups, phenyl groups and a Z group having the structure: ##STR15## wherein A, B, C, A', B' and C', which may be the same or different, are selected from a class consisting of C 1 -C 4 alkyl groups and phenyl groups; R is selected from a class consisting of a methyl group and hydrogen; m and m', which may be the same or different, are integers from one to four, and n is an integer from one to three.

Claim 3

The composition of claim 1 being especially adapted for use as a prosthetic device.

Claim 4

The composition of claim 2, wherein said X and Y are selected from a class consisting of a methyl group, phenyl groups and a Z group; said A, B, C, A', B' and C' are selected from a class consisting of a methyl group and phenyl groups.

Claim 5

The composition of claim 2, wherein said X and Y are selected from a class consisting of a methyl group and a Z group; said A, B, C, A', B' and C' are selected from a class consisting of a methyl group.

Claim 6

The composition of claim 4, wherein said hydrophilic vinyl pyrrolidone monomers are selected from a class consisting of a 1-vinyl pyrrolidone.

Claim 7

The composition of claim 5, wherein said X and Y are a Z group; m and m' are integers from one to two.

Claim 8

The composition of claim 6, wherein there is about 20 to 45 parts by weight of 1-vinyl pyrrolidone and about 20 to 55 parts by weight of at least one of a polysiloxanylalkyl ester.

Claim 9

A composition of matter having the characteristics of increased hydrophilicity, softness after hydration and oxygen permeability, said composition being a copolymer of comonomers consisting essentially of: (a) about 15 to 65 parts by weight of at least one of the amide group containing monomers consisting of: (1) N-vinyl pyrrolidone having the structure ##STR16## wherein R 1 , R 2 and R 3 , which may be the same or different, are selected from a class consisting of hydrogen and C 1 -C 4 alkyl groups; and (2) acrylamide and methacrylamide having the structure ##STR17## wherein R 4 is selected from a class consisting of a methyl group and hydrogen; R 5 and R 6 , which may be the same or different, are selected from a class consisting of hydrogen and C 1 -C 4 alkyl groups, wherein the selection both of R 5 and R 6 from hydrogen is excluded; and (b) about 10 to 85 parts by weight of at least one of a polysiloxanylalkyl ester having the structure: ##STR18## wherein X and Y, which may be the same or different, are selected from a class consisting of C 1 -C 4 alkyl groups, phenyl groups and a Z group having the structure: ##STR19## wherein A, B, C, A', B' and C', which may be the same or different, are selected from a class consisting of C 1 -C 4 alkyl groups and phenyl groups; R is selected from a class consisting of a methyl group and hydrogen; m and m', which may be the same or different, are integers from one to four, and n is an integer from one to three; and (c) 0 to about 75 parts by weight of at least one of an ester of a C 1 -C 20 monohydric alkanol and an acid selected from a class consisting of acrylic and methacrylic acids.

Claim 10

A composition of matter having the characteristics of increased hydrophilicity, softness after hydration and oxygen permeability, said composition being a copolymer of comonomers consisting essentially of: (a) about 15 to 65 parts by weight of at least one of the amide group containing monomers consisting of: (1) N-vinyl pyrrolidone having the structure ##STR16## wherein R 1 , R 2 and R 3 , which may be the same or different, are selected from a class consisting of hydrogen and C 1 -C 4 alkyl groups; and (2) acrylamide and methacrylamide having the structure ##STR17## wherein R 4 is selected from a class consisting of a methyl group and hydrogen; R 5 and R 6 , which may be the same or different, are selected from a class consisting of hydrogen and C 1 -C 4 alkyl groups, wherein the selection both of R 5 and R 6 from hydrogen is excluded; and (b) about 10 to 85 parts by weight of at least one of a polysiloxanylalkyl ester having the structure: ##STR18## wherein X and Y, which may be the same or different, are selected from a class consisting of C 1 -C 4 alkyl groups, phenyl groups and a Z group having the structure: ##STR19## wherein A, B, C, A', B' and C', which may be the same or different, are selected from a class consisting of C 1 -C 4 alkyl groups and phenyl groups; R is selected from a class consisting of a methyl group and hydrogen; m and m', which may be the same or different, are integers from one to four, and n is an integer from one to three; and (c) 0 to about 75 parts by weight of at least one of an ester of a C 1 -C 20 monohydric alkanol and an acid selected from a class consisting of acrylic and methacrylic acids.

Claim 11

The composition of claim 8 being especially adapted for use as a prosthetic device.

Claim 12

The composition of claim 9, wherein said X and Y are selected from a class consisting of a methyl group, phenyl groups and a Z group; said A, B, C, A', B' and C' are selected from a class consisting of a methyl group and phenyl groups.

Claim 13

The composition of claim 9, wherein said X and Y are selected from a class consisting of a methyl group and a Z group; said A, B, C, A', B' and C' are selected from a class consisting of a methyl group.

Claim 14

The composition of claim 11, wherein said hydrophilic vinyl pyrrolidone monomers are selected from a class consisting of a 1-vinyl pyrrolidone.

Claim 15

The composition of claim 12, wherein said X and Y are a Z group; m and m' are integers from one to two.

Claim 16

A composition of matter specially adapted for use as a prosthetic device having the characteristics of increased hydrophilicity, softness after hydration and oxygen permeability, said composition being a copolymer of comonomers consisting essentially of: (a) about 20 to 45 parts by weight of at least one of the amide group containing monomers consisting of N-vinyl pyrrolidone and N,N-dimethyl methacrylamide; (b) about 20 to 55 parts by weight of at least one of a polysiloxanyl ester having the structure: ##STR20## wherein X and Y, which may be the same or different, are selected from a class consisting of a methyl group and a Z group having the structure: ##STR21## wherein R is selected from a class consisting of a methyl group and hydrogen; m and m', which may be the same or different, are integers from one to two, and n is an integer from one to three; and (c) 0 to about 30 parts by weight of at least one of an ester of a C 1 -C 20 monohydric alkanol and an acid selected from a class consisting of acrylic and methacrylic acids.

Claim 17

A composition of matter specially adapted for use as a prosthetic device having the characteristics of increased hydrophilicity, softness after hydration and oxygen permeability, said composition being a copolymer of comonomers consisting essentially of: (a) about 20 to 45 parts by weight of at least one of the amide group containing monomers consisting of N-vinyl pyrrolidone and N,N-dimethyl methacrylamide; (b) about 20 to 55 parts by weight of at least one of a polysiloxanyl ester having the structure: ##STR20## wherein X and Y, which may be the same or different, are selected from a class consisting of a methyl group and a Z group having the structure: ##STR21## wherein R is selected from a class consisting of a methyl group and hydrogen; m and m', which may be the same or different, are integers from one to two, and n is an integer from one to three; and (c) 0 to about 30 parts by weight of at least one of an ester of a C 1 -C 20 monohydric alkanol and an acid selected from a class consisting of acrylic and methacrylic acids.