Low polydispersity poly-HEMA compositions

Details Low polydispersity poly-HEMA compositions Low polydispersity poly-HEMA compositions

2005-01-25

2005-01-25

Pezzuto, Helen L. (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S260000, C526S264000, C526S301000, C526S303100, C526S304000, C526S307500, C526S307700, C526S314000, C526S318420, C526S328500

Reexamination Certificate

active

06846892

ABSTRACT:
The present invention relates to compositions comprising poly-HEMA having a peak molecular weight between about 25,000 and about 100,000, preferably between 25,000 and 80,000 and a polydispersity of less than about 2 to less than about 3.8 respectively and covalently bonded thereon, at least one cross-linkable functional group. The present invention further relates to low polydispersity poly-HEMA suitable for making the crosslinkable prepolymers, processes for functionalizing and purifying said poly-HEMA to form said crosslinkable prepolymers, viscous solutions made from said crosslinkable prepolymers, hydrogels made from said viscous solutions and articles made from said crosslinkable polymers, hydrogels and viscous solutions.

REFERENCES:
patent: 3854982 (1974-12-01), Aellon et al.
patent: 3916033 (1975-10-01), Merrill
patent: 4139513 (1979-02-01), Tanaka et al.
patent: 4139692 (1979-02-01), Tanaka et al.
patent: 4235985 (1980-11-01), Tanaka et al.
patent: 4264489 (1981-04-01), Ibsen et al.
patent: 4323636 (1982-04-01), Chen
patent: 4430417 (1984-02-01), Heinz et al.
patent: 4495313 (1985-01-01), Larsen
patent: 4698373 (1987-10-01), Tateosian et al.
patent: 4711943 (1987-12-01), Harvey, III
patent: 4889664 (1989-12-01), Kindt-Larsen
patent: 4910277 (1990-03-01), Bambury et al.
patent: 4920184 (1990-04-01), Schafer et al.
patent: 4963159 (1990-10-01), Narducy et al.
patent: 5002794 (1991-03-01), Ratner et al.
patent: 5039459 (1991-08-01), Kindt-Larsen
patent: 5070215 (1991-12-01), Bambury et al.
patent: 5170192 (1992-12-01), Pettigrew et al.
patent: 5779943 (1998-07-01), Enns et al.
patent: 5849810 (1998-12-01), Muller
patent: 5849841 (1998-12-01), Muhlebach et al.
patent: 5998498 (1999-12-01), Vanderlaan et al.
patent: 6087415 (2000-07-01), Vanderlaan et al.
patent: 6380314 (2002-04-01), Soane et al.
patent: 6416690 (2002-07-01), Soane et al.
patent: 6419858 (2002-07-01), Houston et al.
patent: 6570714 (2003-05-01), Soane et al.
patent: 6709103 (2004-03-01), Roffman et al.
patent: 6733700 (2004-05-01), Houston et al.
patent: 0106641 (1984-04-01), None
patent: 0 184 761 (1986-06-01), None
patent: 0238863 (1987-09-01), None
patent: 0823643 a1 (1998-02-01), None
patent: 0951654 b1 (1999-10-01), None
patent: 2257978 (1993-01-01), None
patent: WO 9104283 (1991-04-01), None
patent: WO 0017675 (2000-03-01), None
patent: WO 0055653 (2000-09-01), None
patent: WO 03003073 (2003-01-01), None
Handbook of Polymer Liquid Interaction Parameters and Solubility Parameter, CRC Press, Inc. 1990 and Handbook of Solubility Parameters and Other Cohesion Parameters, A. F. M. Barton, CRC Press, 1985, Table 5.
Hansen Solubility Parameters; A User's Handbook, Charles M. Hansen, pp. 43-53, CRC Press 2000 and CMH's Sphere computer program for the calculations.
The Polymeric Materials Encyclopedia, Contact Lenses, Gas Permeable, Jay F. Kunzler, p 1-11.
Polymers And Resins, Brage Golding, Ph.D., Van Nostrand Company, pp. 457-463.

Affiliated with

Also associated with

Rating

Low polydispersity poly-HEMA compositions does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low polydispersity poly-HEMA compositions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low polydispersity poly-HEMA compositions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3428746