Method of selectively removing biuret from urea and compositions

Details Method of selectively removing biuret from urea and compositions Method of selectively removing biuret from urea and compositions

1981-08-10

1982-08-17

Doll, John

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

71 28, 71119, 564 73, C07C12701, C07C12608

Patent

active

043450997

ABSTRACT:
Biuret is selectively removed from urea by treating the urea in an aqueous solution at a pH above about 12.5 and a temperature between about 0.degree. C. and 100.degree. C. for a period of time sufficient to decompose at least a portion of the biuret. Solid urea compositions containing biuret and a strong base capable of selectively decomposing at least a portion of the biuret when the mixture is dissolved in water are also disclosed.

REFERENCES:
patent: 1951518 (1934-03-01), Meiser et al.
patent: 2854482 (1958-09-01), Guyer
patent: 3185731 (1965-05-01), Kaasenbrood
patent: 3211788 (1965-10-01), Cook
patent: 3232984 (1966-02-01), Finneran
patent: 3251879 (1966-05-01), Rosenbloom
patent: 3255246 (1966-06-01), Singer
patent: 3287407 (1966-11-01), Zardi
patent: 3318951 (1967-05-01), Kaasenbrood
patent: 3903158 (1975-09-01), Fuentes
patent: 4231960 (1980-11-01), Schmidt
Chao, "Urea, Its Properties and Manufacture," Chao's Institute, West Covina, Calif. published Taipei, Taiwan.

Affiliated with

Also associated with

Rating

Method of selectively removing biuret from urea and 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 Method of selectively removing biuret from urea and compositions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of selectively removing biuret from urea and compositions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-187822