Richard Christ

US Patent:

20020082691, Jun 27, 2002

Filed:

Jun 5, 2001

Appl. No.:

09/875410

Inventors:

Richard Christ - Orange CA, US
Brian Nash - Carpinteria CA, US
Del Petraitis - Goleta CA, US

Assignee:

Allergan - Waco TX

International Classification:

A61F002/16
C08K009/06

US Classification:

623/006560, 523/212000, 524/493000

Abstract:

Optically clear, reinforced cross-linked silicone elastomers of the invention contain 12 to 18 mol percent of aryl substituted siloxane units of the formula R,R—SiO, end blockers containing silioxane units of the formula RRR—Si—O, and dialkyl siloxane units of the formula RR—Si—O Rand Rare alkyl, aryl or substituted alkyl or substituted aryl groups, and Ris an alkenyl group. Rand Rare phenyl or mono lower alkyl substituted phenyl groups. Rand Rare methyl or ethyl groups. The polymer has a degree of polymerization between 100 to 2000, and preferably approximately 250. The polymer also contains trimethyl silyl treated silica as a reinforcer in the weight ratio of approximately 15 to 45 parts of reinforcer to 100 parts of the polymer. After cross-linking, the polymer has properties of an optical refractive index which is at least 1.44, a type A durometer hardness of at least 35, tensile strength of at least 500 psi and tear strength of at least 20 phi. The foregoing properties render the cross-linked polymer especially suitable for forming the bodies of intraocular lenses.

US Patent:

52369706, Aug 17, 1993

Filed:

Apr 17, 1992

Appl. No.:

7/870799

Inventors:

Richard Christ - Orange CA
Brian A. Nash - Carpinteria CA
Del J. Petraitis - Goleta CA

Assignee:

Allergan, Inc. - Irvine CA

International Classification:

C08L 8305

US Classification:

523113

Abstract:

Optically clear, reinforced cross-linked silicone elastomers of the invention contain 12 to 18 mol percent of aryl substituted siloxane units of the formula R. sub. 4 R. sub. 5 -SiO, end blockers containing silioxane units of the formula R. sub. 1 R. sub. 2 R. sub. 3 -SiO. sub. 5, and dialkyl siloxane units of the formula R. sub. 6 R. sub. 7 -SiO. R. sub. 1 and R. sub. 2 are alkyl, aryl or substituted alkyl or substituted aryl groups, and R. sub. 3 is an alkenyl group. R. sub. 4 and R. sub. 5 are phenyl or mono lower alkyl substituted phenyl groups. R. sub. 6 and R. sub. 7 are methyl or ethyl groups. The polymer has a degree of polymerization between 100 to 2000, and preferably approximately 250. The polymer also contains trimethyl silyl treated silica as a reinforcer in the weight ratio of approximately 15 to 45 parts of reinforcer to 100 parts of the polymer. After cross-linking, the polymer has properties of an optical refractive index which is at least 1.

US Patent:

54949467, Feb 27, 1996

Filed:

Sep 29, 1994

Appl. No.:

8/315279

Inventors:

Richard Christ - Orange CA
Brian A. Nash - Carpinteria CA
Del J. Petraitis - Goleta CA

Assignee:

Allergan, Inc. - Irvine CA

International Classification:

C08L 8305

US Classification:

523113

Abstract:

Optically clear, reinforced cross-linked silicone elastomers of the invention contain 12 to 18 mol percent of aryl substituted siloxane units of the formula R. sub. 4 R. sub. 5 -SiO, end blockers containing silioxane units of the formula R. sub. 1 R. sub. 2 R. sub. 3 -S:O. sub. 5, and dialkyl siloxane units of the formula R. sub. 6 R. sub. 7 -SiO. R. sub. 1 and. sub. 2 are alkyl, aryl or substituted alkyl or substituted aryl groups, and R. sub. 3 is an alkenyl group. R. sub. 4 and R. sub. 5 are phenyl or mono lower alkyl substituted phenyl groups. R. sub. 6 and R. sub. 7 are methyl or ethyl groups. The polymer has a degree of polymerization between 100 to 2000, and preferably approximately 250. The polymer also contains trimethyl silyl treated silica as a reinforcer in the weight ration of approximately 15 to 45 parts of reinforcer to 100 parts of the polymer. After cross-linking, the polymer has properties of an optical refractive index which is at least 1.

US Patent:

53766946, Dec 27, 1994

Filed:

Jun 30, 1993

Appl. No.:

8/086763

Inventors:

Richard Christ - Orange CA
Brian A. Nash - Carpinteria CA
Del J. Petraitis - Goleta CA

Assignee:

Allergan, Inc. - Irvine CA

International Classification:

C08L 8305

US Classification:

523113

Abstract:

Optically clear, reinforced cross-linked silicone elastomers of the invention contain 12 to 18 mol percent of aryl substituted siloxane units of the formula R. sub. 4 R. sub. 5 --SiO end blockers containing silioxane units of the formula R. sub. 1 R. sub. 2 R. sub. 3 --SiO. 5, and dialkyl siloxane units of the formula R. sub. 6 R. sub. 7 --SiO. R. sub. 1 and. sub. 2 are alkyl, aryl or substituted alkyl or substituted aryl groups, and R. sub. 3 is an alkenyl group. R. sub. 4 and R. sub. 5 are phenyl or mono lower alkyl substituted phenyl groups. R. sub. 6 and R. sub. 7 are methyl or ethyl groups. The polymer has a degree of polymerization between 100 to 2000, and preferably approximately 250. The polymer also contains trimethyl silyl treated silica as a reinforcer in the weight ratio of approximately 15 to 45 parts of reinforcer to 100 parts of the polymer. After cross-linking, the polymer has properties of an optical refractive index which is at least 1.

US Patent:

56611951, Aug 26, 1997

Filed:

Dec 15, 1995

Appl. No.:

8/572768

Inventors:

Richard Christ - Orange CA
Brian Allen Nash - Carpinteria CA
Del Joseph Petraitis - Goleta CA

Assignee:

Allergan - Waco TX

International Classification:

C08L 8305

US Classification:

523113

Abstract:

Optically clear, reinforced cross-linked silicone elastomers of the invention contain 12 to 18 mol percent of aryl substituted siloxane units of the formula R. sub. 4 R. sub. 5 --SiO, end blockers containing silioxane units of the formula R. sub. 1 R. sub. 2 R. sub. 3 SiO. sub. 5, and dialkyl siloxane units of the formula R. sub. 6 R. sub. 7 --SiO. R. sub. 1 and. sub. 2 are alkyl, aryl or substituted alkyl or substituted aryl groups, and R. sub. 3 is an alkenyl group. R. sub. 4 and R. sub. 5 are phenyl or mono lower alkyl substituted phenyl groups. R. sub. 6 and R. sub. 7 are methyl or ethyl groups. The polymer has a degree of polymerization between 100 to 2000, and preferably approximately 250. The polymer also contains trimethyl silyl treated silica as a reinforcer in the weight ratio of approximately 15 to 45 parts of reinforcer to 100 parts of the polymer. After cross-linking, the polymer has properties of an optical refractive index which is at least 1.

US Patent:

62771477, Aug 21, 2001

Filed:

Oct 16, 1998

Appl. No.:

9/174267

Inventors:

Richard Christ - Orange CA
Brian Allen Nash - Carpinteria CA
Del Joseph Petraitis - Goleta CA

Assignee:

Allergan - Waco TX

International Classification:

A61F 216

US Classification:

623 656

Abstract:

Optically clear, reinforced cross-linked silicone elastomers of the invention contain 12 to 18 mol percent of aryl substituted siloxane units of the formula R. sub. 4 R. sub. 5 -SiO, end blockers containing siloxane units of the formula R. sub. 1 R. sub. 2 R. sub. 3 SiO. sub. 5, and dialkyl siloxane units of the formula R. sub. 6 R. sub. 7 -SiO. R. sub. 1 and R. sub. 2 are alkyl, aryl or substituted alkyl or substituted aryl groups, and R. sub. 3 is an alkenyl group. R. sub. 4 and R. sub. 5 are phenyl or mono lower alkyl substituted phenyl groups. R. sub. 6 and R. sub. 7 are methyl or ethyl groups. The polymer has a degree of polymerization between 100 to 2000, and preferably approximately 250. The polymer also contains trimethyl silyl treated silica as a reinforcer in the weight ratio of approximately 15 to 45 parts of reinforcer to 100 parts of the polymer. After cross-linking, the polymer has properties of an optical refractive index which is at least 1.

US Patent:

58695494, Feb 9, 1999

Filed:

May 28, 1997

Appl. No.:

8/866292

Inventors:

Richard Christ - Orange CA
Brian Allen Nash - Carpinteria CA
Del Joseph Petraitis - Goleta CA

Assignee:

Allergan - Waco TX

International Classification:

C08K 906

US Classification:

523212

Abstract:

Optically clear, reinforced cross-linked silicone elastomers of the invention contain 12 to 18 mol percent of aryl substituted siloxane units of the formula R. sub. 4 R. sub. 5 --SiO, end blockers containing silioxane units of the formula R. sub. 1 R. sub. 2 R. sub. 3 --SiO. sub. 5, and dialkyl siloxane units of the formula R. sub. 6 R. sub. 7 --SiO. R. sub. 1 and R. sub. 2 are alkyl, aryl or substituted alkyl or substituted aryl groups, and R. sub. 3 is an alkenyl group. R. sub. 4 and R. sub. 5 are phenyl or mono lower alkyl substituted phenyl groups. R. sub. 6 and R. sub. 7 are methyl or ethyl groups. The polymer has a degree of polymerization between 100 to 2000, and preferably approximately 250. The polymer also contains trimethyl silyl treated silica as a reinforcer in the weight ratio of approximately 15 to 45 parts of reinforcer to 100 parts of the polymer. After cross-linking, the polymer has properties of an optical refractive index which is at least 1.

Author:

Richard Christ

ISBN #:

3351003471

Author:

Richard Christ

ISBN #:

3351011768

Author:

Richard Christ

ISBN #:

3356008056

Author:

Richard Christ

ISBN #:

3356009109