Balanced charge polymer and hydrophilic contact lens manufacture

Details Balanced charge polymer and hydrophilic contact lens manufacture Balanced charge polymer and hydrophilic contact lens manufacture

1993-11-09

1995-02-21

Cain, Edward

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526278, 526287, 526288, 526310, 526312, 351160R, C08F 2606

Patent

active

053916697

ABSTRACT:
A water swellable crosslinked polymer of essentially balanced charge is obtained by polymerizing a polymer-forming composition comprising a cationic-anionic pair of ethylenically unsaturated monomers and a non-ionic ethylenically unsaturated hydrophilic and/or hydrophobic monomer. Contact lenses formed from the polymer exhibit little if any tendency to attract soils, e.g., proteinaceous debris, to their surfaces.

REFERENCES:
patent: 3671502 (1972-06-01), Samour et al.
patent: 3957740 (1976-05-01), Blank et al.
patent: 3963662 (1976-06-01), Fujiwara et al.
patent: 4107121 (1978-08-01), Stoy
patent: 4111922 (1978-09-01), Beede et al.
patent: 4163609 (1979-08-01), Neefe
patent: 4168112 (1979-09-01), Ellis et al.
patent: 4251651 (1981-02-01), Kawakam et al.
patent: 4267103 (1981-05-01), Cohen
patent: 4342858 (1982-08-01), Herman et al.
patent: 4463148 (1984-07-01), Hofer et al.
patent: 4569858 (1986-02-01), Lim et al.
patent: 4650843 (1987-03-01), Yokoyama et al.
patent: 4666964 (1987-05-01), Hunter et al.
patent: 4890911 (1990-01-01), Sulc et al.
patent: 4893918 (1990-01-01), Sulc et al.
patent: 5075399 (1991-12-01), Ahmed et al.
Michaels, "Polyelectrolyte Complexes", Industrial and Engineering Chemistry, vol. 57, No. 10, pp. 32-40 (Oct. 1965).
Kirk-Othmer, "Encyclopedia of Chemical Technology", 3rd Ed., vol. 18 (Polyelectrolytes) pp. 495-539 (John Wiley & Sons, 1982).
"Encyclopedia of Polymer Science and Engineering", vol. 11 (Polyelectrolyte Complexes), pp. 720-739 (John Wiley & Sons, 1988).
International Search Report from PCT Appln. PCT/US91/09625.
Written Opinion by International Preliminary Examining Authority in PCT Appln. No. PCT/US91/09625.
International Preliminary Examining Report in PCT Appln. No. PCT/US91/09625 (Forms PCT/IPEA/409 & 416).

Affiliated with

Also associated with

Rating

Balanced charge polymer and hydrophilic contact lens manufacture does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Balanced charge polymer and hydrophilic contact lens manufacture, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Balanced charge polymer and hydrophilic contact lens manufacture will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1930928