Crosslinkable polyurea prepolymers

Details Crosslinkable polyurea prepolymers Crosslinkable polyurea prepolymers

2011-07-12

2011-07-12

Cano, Milton I (Department: 1763)

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S123000, C525S127000, C525S128000, C525S455000, C525S459000, C522S090000, C522S097000, C522S173000, C522S174000, C351S16000R, C351S16000R

Reexamination Certificate

active

07977430

ABSTRACT:
The present invention provides a water-soluble crosslinkable polyurea prepolymer. The crosslinkable polyurea prepolymer of the invention is prepared by reacting an amine- or isocyanate-capped polyurea with a multifunctional compound having at least one one ethylenically unsaturated group and a function group coreactive with the capping amine or isocyanate groups of the amine- or isocyanate-capped polyurea. The amine- or isocyanate-capped polyurea is a copolymerization production of: (a) at least one poly(oxyalkylene)diamine, (b) optionally at least one organic di- or poly-amine, (c) optionally at least one diisocyanate, and (d) at least one polyisocyanate. The crosslinkable polyurea prepolymer of the invention can find use in economically producing contact lenses which have durable, highly elastic soft contact lenses with desired physical properties. In addition, the present invention provides method for making a medical device, preferably an ophthalmic device, more preferably a contact lens.

REFERENCES:
patent: 3719050 (1973-03-01), Aseo et al.
patent: 3786034 (1974-01-01), Blair et al.
patent: 3821136 (1974-06-01), Hudgin et al.
patent: 3822238 (1974-07-01), Blair et al.
patent: 3939105 (1976-02-01), Jones, Jr. et al.
patent: 4057598 (1977-11-01), Lundberg et al.
patent: 4104824 (1978-08-01), Lundberg et al.
patent: 4118354 (1978-10-01), Harada et al.
patent: 4255550 (1981-03-01), Gould
patent: 4359558 (1982-11-01), Gould et al.
patent: 4403083 (1983-09-01), Marans et al.
patent: 4408023 (1983-10-01), Gould et al.
patent: 4454309 (1984-06-01), Gould et al.
patent: 4490423 (1984-12-01), Gould et al.
patent: 4496535 (1985-01-01), Gould et al.
patent: 4543398 (1985-09-01), Bany et al.
patent: 4576850 (1986-03-01), Martens
patent: 4582885 (1986-04-01), Barber
patent: 4584245 (1986-04-01), Kuga et al.
patent: 4623592 (1986-11-01), Daude et al.
patent: 4644033 (1987-02-01), Gnanou et al.
patent: 4668558 (1987-05-01), Barber
patent: 4668564 (1987-05-01), Orchard
patent: 4689386 (1987-08-01), Chapman et al.
patent: 4749592 (1988-06-01), Gasper et al.
patent: 4767671 (1988-08-01), Parker et al.
patent: 4780488 (1988-10-01), Su et al.
patent: 4786657 (1988-11-01), Hammar et al.
patent: 4810582 (1989-03-01), Gould et al.
patent: 4816509 (1989-03-01), Fukushima et al.
patent: 4844983 (1989-07-01), Parker et al.
patent: 4857606 (1989-08-01), Su et al.
patent: 4886866 (1989-12-01), Brantz et al.
patent: 5034461 (1991-07-01), Lai et al.
patent: 5039458 (1991-08-01), Brantz et al.
patent: 5039769 (1991-08-01), Molock et al.
patent: 5087392 (1992-02-01), Burke et al.
patent: 5120816 (1992-06-01), GOuld et al.
patent: 5169720 (1992-12-01), Braatz et al.
patent: 5175229 (1992-12-01), Braatz et al.
patent: 5283312 (1994-02-01), Kanemura et al.
patent: 5304584 (1994-04-01), Nunez et al.
patent: 5334691 (1994-08-01), Gould et al.
patent: 5352758 (1994-10-01), Kanemura et al.
patent: 5354835 (1994-10-01), Blair
patent: 5506300 (1996-04-01), Ward et al.
patent: 5612414 (1997-03-01), Becker et al.
patent: 5656210 (1997-08-01), Hill et al.
patent: 5674942 (1997-10-01), Hill et al.
patent: 5719227 (1998-02-01), Rosenberry et al.
patent: 5814705 (1998-09-01), Ward et al.
patent: 6096246 (2000-08-01), Chan et al.
patent: 6177507 (2001-01-01), Calderada
patent: 6225021 (2001-05-01), Widawski et al.
patent: 6252032 (2001-06-01), Van Antwerp et al.
patent: 6312706 (2001-11-01), Lai et al.
patent: 6329488 (2001-12-01), Terry et al.
patent: 6379591 (2002-04-01), Breyne
patent: 6399791 (2002-06-01), Breyne et al.
patent: 6479587 (2002-11-01), Stockinger et al.
patent: 2002/0037271 (2002-03-01), Lai et al.
patent: 0204161 (1986-05-01), None
patent: 735097 (1993-12-01), None
patent: 1017734 (1998-09-01), None
patent: 11255859 (1999-09-01), None
patent: WO 99/14253 (1998-09-01), None

Affiliated with

Also associated with

Rating

Crosslinkable polyurea prepolymers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Crosslinkable polyurea prepolymers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Crosslinkable polyurea prepolymers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2727642