Fertilizer compound of the ureaform type and a method for the pr

Details Fertilizer compound of the ureaform type and a method for the pr Fertilizer compound of the ureaform type and a method for the pr

1976-03-26

1978-05-16

Wyman, Daniel E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

71 28, C07C12715, C05C 0000

Patent

active

040898997

ABSTRACT:
The present invention relates to a new fertilizer compound of the ureaform type and to a method for the production thereof. The new ureaform compound is characterized by the low average degree of polymerization between urea and formaldehyde. The new compound has a nitrogen content of over 41% by weight and consists of cold water soluble nitrogen as the main fraction and cold water insoluble as the second fraction which is substantially free of hot water insoluble nitrogen. The new ureaform compound is obtained by the condensation of urea and formaldehyde at a correct ratio between the reagents and termination of the reaction at a stage wherein excessive polymerization is prevented. The reaction is carried out in a controlled system with a pH in the range of 3.5 to 4.2. Particularly useful are the systems H.sub.3 PO.sub.4 -KH.sub.2 PO.sub.4 and H.sub.3 PO.sub.4 -NH.sub.4 H.sub.2 PO.sub.4. The new compound successfully combines the advantage of both mineral water soluble nitrogen fertilizers and organic water insoluble slow-release nitrogen sources.

REFERENCES:
patent: 2415705 (1947-02-01), Rohner et al.
patent: 2502996 (1950-04-01), Rohner et al.
patent: 2592809 (1952-04-01), Krelovec et al.
patent: 2644806 (1953-07-01), Kise
patent: 2766283 (1956-10-01), Darden
patent: 2830036 (1958-04-01), O'Donnell
patent: 2916371 (1959-12-01), O'Donnell
patent: 3150955 (1964-09-01), Smith
patent: 3231363 (1966-01-01), Renner
patent: 3333940 (1967-08-01), Ridgeway
patent: 3712879 (1973-01-01), Strickrodt et al.
patent: 3759687 (1973-09-01), Nobell
patent: 3870755 (1975-03-01), Kamo et al.
patent: 3970625 (1976-07-01), Moore et al.

Affiliated with

Also associated with

Rating

Fertilizer compound of the ureaform type and a method for the pr does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fertilizer compound of the ureaform type and a method for the pr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fertilizer compound of the ureaform type and a method for the pr will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1197485