Phosphoric ester of cellulose derivative and metal adsorbent...

Details Phosphoric ester of cellulose derivative and metal adsorbent... Phosphoric ester of cellulose derivative and metal adsorbent...

2005-09-26

2010-06-22

Eashoo, Mark (Department: 1796)

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

Synthetic resins

From carbohydrate or derivative as a reactant

C536S062000, C422S255000

Reexamination Certificate

active

07741424

ABSTRACT:
The present invention is directed to a phosphoric ester of 2,3-dihydroxypropyl cellulose or 3-(2,3-dihydroxypropoxy)-2-hydroxypropyl cellulose, the cellulose having optionally undergone partial carbamidation, and to a metal absorbent employing the ester, and to a metal-absorbing apparatus employing the metal adsorbent.The cellulose derivative phosphoric ester serves as a metal adsorbent which exhibits high metal adsorption performance and metal adsorption rate per unit weight; has high mechanical strength; effectively soften water or a similar liquid; removes heavy metals from wastewater or a similar liquid at remarkably high efficiency; has excellent processability and can be formed into a variety of shapes and thus is applicable within a wide range; and can readily be reutilized.

REFERENCES:
patent: 2008986 (1935-07-01), Malm et al.
patent: 2759924 (1956-08-01), Touey
patent: 2981730 (1961-04-01), Martin et al.
patent: 3553194 (1971-01-01), Verbanae et al.
patent: 3574719 (1971-04-01), Chance et al.
patent: 3739782 (1973-06-01), Bernardin
patent: 3920391 (1975-11-01), Vigo et al.
patent: 3936441 (1976-02-01), Holst et al.
patent: 3962212 (1976-06-01), Sano et al.
patent: 4001210 (1977-01-01), Engelskirchen et al.
patent: 4013821 (1977-03-01), Engelskirchen et al.
patent: 4083904 (1978-04-01), Sano et al.
patent: 4096326 (1978-06-01), Reid
patent: 4256111 (1981-03-01), Lassen
patent: 4379918 (1983-04-01), Brandt et al.
patent: 4396433 (1983-08-01), Brandt et al.
patent: 4413121 (1983-11-01), Brandt et al.
patent: 4523010 (1985-06-01), Lukach et al.
patent: 4537958 (1985-08-01), Strange et al.
patent: 4553601 (1985-11-01), Almond et al.
patent: 4579942 (1986-04-01), Brode et al.
patent: 5067565 (1991-11-01), Holtmyer et al.
patent: 5122549 (1992-06-01), Holtmyer et al.
patent: 5182380 (1993-01-01), Breckwoldt et al.
patent: 5224546 (1993-07-01), Smith et al.
patent: 5304620 (1994-04-01), Holtmyer et al.
patent: 5358561 (1994-10-01), Kiesewetter et al.
patent: 5385607 (1995-01-01), Kiesewetter et al.
patent: 5463037 (1995-10-01), Kiyose et al.
patent: 5571392 (1996-11-01), Sato et al.
patent: 5698265 (1997-12-01), Mucalo et al.
patent: 5760809 (1998-06-01), Malhotra et al.
patent: 5789204 (1998-08-01), Kogtev et al.
patent: 6579977 (2003-06-01), Pieschel et al.
patent: 6761272 (2004-07-01), Pieschel et al.
patent: 6949317 (2005-09-01), Yoshida et al.
patent: 2001/0007027 (2001-07-01), Engelhardt et al.
patent: 2002/0102464 (2002-08-01), Yoshida et al.
patent: 2003/0003359 (2003-01-01), Banno et al.
patent: 2004/0072332 (2004-04-01), Suzuki et al.
patent: 2004/0082744 (2004-04-01), Klipper et al.
patent: 2004/0139587 (2004-07-01), Sato et al.
patent: 2007/0093654 (2007-04-01), Yabusaki
patent: 50 130884 (1975-10-01), None
patent: 07 145201 (1995-06-01), None
patent: 9 108568 (1997-04-01), None
patent: 2003 500199 (2003-01-01), None
Li et al., Analytica Chimica Acta 464, 2002, p. 331-339.
P. de Magalhaes Padilha et al., Talanta 45, 1997, p. 317-323.
Petreus et al., Chem. Bull. Politehnica Univ. Timisoara 48(62) 2003, p. 1-2.

Affiliated with

Also associated with

Rating

Phosphoric ester of cellulose derivative and metal adsorbent... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Phosphoric ester of cellulose derivative and metal adsorbent..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phosphoric ester of cellulose derivative and metal adsorbent... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4185437