Enzyme loaded hydrophilic porous structure for protecting oxygen

Details Enzyme loaded hydrophilic porous structure for protecting oxygen Enzyme loaded hydrophilic porous structure for protecting oxygen

1995-06-01

1998-06-16

Spear, Frank

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

21050042, 428 354, B01D 7138

Patent

active

057664730

ABSTRACT:
Articles having a complex geometric configuration have hydrophilicity imparted to at least a portion of surfaces of the articles while substantially retaining the complex geometric configuration. The hydrophilicity is imparted by an extremely thin, self-interlocking shell of tactic, hydrophilic poly(vinyl alcohol) enveloping the surfaces. A tactic poly(vinyl alcohol) precursor applied to surfaces of the supporting structure is reacted in situ on the surfaces with a hydrolysis reagent to prepare the tactic, hydrophilic poly(vinyl alcohol) shell. The article having the hydrophilic shell is highly resistant to solvent washout. Hydrophilicity and hydrophobicity can be reversibly provided on regio-specific surfaces of the article. Hydrophilic porous supporting structures loaded with an enzyme system which catalyzes a reaction of a substrate, oxygen, and if necessary, water or moisture to consume oxygen are also described for oxygen scavenging in packages containing oxygen sensitive products.

REFERENCES:
patent: 2765233 (1956-10-01), Sarett et al.
patent: 3853601 (1974-12-01), Taskier
patent: 3892575 (1975-07-01), Watts et al.
patent: 3941718 (1976-03-01), Barabas et al.
patent: 4143218 (1979-03-01), Adams et al.
patent: 4192773 (1980-03-01), Yoshikawa et al.
patent: 4197181 (1980-04-01), Portal et al.
patent: 4298666 (1981-11-01), Taskier
patent: 4301195 (1981-11-01), Mercer et al.
patent: 4302334 (1981-11-01), Jakabhazy et al.
patent: 4328076 (1982-05-01), Fisher et al.
patent: 4342635 (1982-08-01), Becker et al.
patent: 4346142 (1982-08-01), Lazear
patent: 4354308 (1982-10-01), Shimada et al.
patent: 4394457 (1983-07-01), Ogasa
patent: 4438185 (1984-03-01), Taskier
patent: 4440830 (1984-04-01), Wempe
patent: 4501793 (1985-02-01), Sarada
patent: 4524015 (1985-06-01), Takahashi et al.
patent: 4528325 (1985-07-01), Ofstead
patent: 4615784 (1986-10-01), Stewart et al.
patent: 4618649 (1986-10-01), Ofstead
patent: 4640865 (1987-02-01), Lancaster et al.
patent: 4675213 (1987-06-01), Yamamori et al.
patent: 4687481 (1987-08-01), Nuwayser
patent: 4693939 (1987-09-01), Ofstead
patent: 4694037 (1987-09-01), Ofstead
patent: 4749487 (1988-06-01), Lefebvre
patent: 4753725 (1988-06-01), Linder et al.
patent: 4776959 (1988-10-01), Kasai et al.
patent: 4778596 (1988-10-01), Linder et al.
patent: 4780514 (1988-10-01), Ofstead
patent: 4794002 (1988-12-01), Henis et al.
patent: 4840992 (1989-06-01), Ofstead
patent: 4849224 (1989-07-01), Chang et al.
patent: 4849457 (1989-07-01), Ichii et al.
patent: 4861644 (1989-08-01), Young et al.
patent: 4878212 (1989-10-01), Kuder
patent: 4885086 (1989-12-01), Miura
patent: 4894253 (1990-01-01), Heineman et al.
patent: 4911844 (1990-03-01), Linder et al.
patent: 4917895 (1990-04-01), Lee et al.
patent: 4921884 (1990-05-01), Hammer et al.
patent: 4921908 (1990-05-01), Ofstead
patent: 4943373 (1990-07-01), Onishi et al.
patent: 4943374 (1990-07-01), Heininger et al.
patent: 4944879 (1990-07-01), Steuck
patent: 4963494 (1990-10-01), Hibino et al.
patent: 5006216 (1991-04-01), Dietrich et al.
patent: 5037656 (1991-08-01), Pitt et al.
patent: 5041225 (1991-08-01), Norman
patent: 5049275 (1991-09-01), Gillberg-LaForce et al.
patent: 5064698 (1991-11-01), Courtright et al.
patent: 5091299 (1992-02-01), Turner et al.
patent: 5443727 (1995-08-01), Gagnon
Harris, J. Polymer Sci., Part A-1, vol. 4, 665-677 (1965).
Haas et al., J. Polymer Sci., vol. 22, 291-302 (1956).
Ikada et al., "Blood Compatibility of Hydrophilic Polymers,", J. Biomedical Materials Research, 15:697-718, (1981).
Sato et al., "Study on Interactions Between Plasma Proteins and Ploymer Surface", Polymer Journal, 16: No. 1, pp. 1-8 (1984).
Saito, "On Food Quality Preservation By Means of Free Oxygen Absorber", Journal Yukaqaku, 28, No. 1, pp. 45-54 (1979) (Translated with pagination 1-23).
Labuza et al., "Applications of Active Packaging for Improvement of Shelf Life and Nutritional Quality of CAP/MAP Foods", J. Food Processing and Preservation, 13:1-69 (1989).

Affiliated with

Also associated with

Rating

Enzyme loaded hydrophilic porous structure for protecting oxygen does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Enzyme loaded hydrophilic porous structure for protecting oxygen, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Enzyme loaded hydrophilic porous structure for protecting oxygen will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1721148