GB976713A - Improvements in or relating to stable urea-formaldehyde suspensions - Google Patents

Improvements in or relating to stable urea-formaldehyde suspensions

Info

Publication number
GB976713A
GB976713A GB18740/62A GB1874062A GB976713A GB 976713 A GB976713 A GB 976713A GB 18740/62 A GB18740/62 A GB 18740/62A GB 1874062 A GB1874062 A GB 1874062A GB 976713 A GB976713 A GB 976713A
Authority
GB
United Kingdom
Prior art keywords
formaldehyde
urea
suspension
mixture
mono
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB18740/62A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JBS USA LLC
Original Assignee
Swift and Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Swift and Co Inc filed Critical Swift and Co Inc
Publication of GB976713A publication Critical patent/GB976713A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
    • C08G12/04—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
    • C08G12/10—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with acyclic compounds having the moiety X=C(—N<)2 in which X is O, S or —N
    • C08G12/12—Ureas; Thioureas
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05C—NITROGENOUS FERTILISERS
    • C05C9/00—Fertilisers containing urea or urea compounds
    • C05C9/02—Fertilisers containing urea or urea compounds containing urea-formaldehyde condensates
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G5/00—Fertilisers characterised by their form
    • C05G5/20—Liquid fertilisers
    • C05G5/27—Dispersions, e.g. suspensions or emulsions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Fertilizers (AREA)

Abstract

A free-flowing mixed fertilizer of high nitrogen content and acid pH is prepared by introducing a substantially reacted stable fluid suspension of urea and formaldehyde (see Division C3), having a urea to formaldehyde mol. ratio of between 1.3 and 2.75 to 1, a pH of between 8 and 14, and between 70-88% solids to a dry acidic fertilizer solids substrate, tumbling the substrate containing the suspension and curing the mixed fertilizer. The fertilizer substrate may comprise acids or acid salts, superphosphates, mono-, di- and tri-basic metaphosphates, other mono- or di-phosphates, ammonium salts, potash, soya bean hull meal, rice hulls, peanut hulls, corn cob fraction, perlite and vermiculite. The substrate may be ammoniated during the process.ALSO:The invention comprises a substantially reacted aqueous suspension of urea and formaldehyde, the suspension having a urea to formaldehyde mol ratio of between 1.3 and 2.75 to 1, a pH between 8 and 14 and containing 88% solids or less, the suspension being stable for at least 30 days. The suspension may be prepared by forming a flowable mixture urea, formaldehyde, water and between 1 and 1.5 mols of an alkaline material per 40 mols of urea, the mixture having the urea to formaldehyde ratio specified above, maintaining the mixture at 85 DEG C. to boiling temperature for at least 5 minutes and rapidly cooling the resultant suspension to about room temperature. Acids or acid salts, superphosphates, mono-, di- and tri-basic metaphosphates, other mono- and di-phosphates, ammonium salts, potash, soya bean hull meal, rice hulls, peanut hulls, corn cob fraction, perlite, vermiculite and ammonia may be added and the resin cured to give fertilizers. The preferred formaldehyde source for the preparation of the suspension is a concentrated methylolurea solution. The alkaline substance may be sodium, potassium or calcium hydroxide or magnesium oxide. An aqueous composition comprises a mixture of substantially uncondensed urea, formaldehyde, water and sufficient of a pH adjusting material to impart a pH of 10 to 14, the mixture having a urea to formaldehyde mol ratio of 1.3 to 2.75 to 1 and containing not more than 88% solids.
GB18740/62A 1961-08-18 1962-05-15 Improvements in or relating to stable urea-formaldehyde suspensions Expired GB976713A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13231261A 1961-08-18 1961-08-18

Publications (1)

Publication Number Publication Date
GB976713A true GB976713A (en) 1964-12-02

Family

ID=22453437

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18740/62A Expired GB976713A (en) 1961-08-18 1962-05-15 Improvements in or relating to stable urea-formaldehyde suspensions

Country Status (2)

Country Link
DE (1) DE1247354B (en)
GB (1) GB976713A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0013307A1 (en) * 1978-11-16 1980-07-23 Allied Corporation Liquid foliar fertilizer compositions containing water-soluble urea-formaldehyde products
GB2226823A (en) * 1988-11-11 1990-07-11 Shaw Chemical Systems Limited Flame retardant composition
CN117567217A (en) * 2023-11-29 2024-02-20 中化农业（临沂）研发中心有限公司 Solidification-preventing biological hormone type liquid fertilizer and preparation method thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8502239A (en) * 1984-08-28 1986-03-17 Arcadian Corp LIQUID FERTILIZER COMPOSITION BASED ON TRIAZON.
CN110342992B (en) * 2019-06-28 2022-04-15 深圳诺普信农化股份有限公司 Process for the preparation of aqueous urea-formaldehyde fertilizer suspensions

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2255026A (en) * 1939-07-06 1941-09-02 Du Pont Fertilizer manufacture
US2255027A (en) * 1941-01-24 1941-09-02 Du Pont Fertilizer manufacture
US2415705A (en) * 1942-03-14 1947-02-11 Solvay Process Co Process for producing fertilizers containing insoluble nitrogen
US2618546A (en) * 1949-04-11 1952-11-18 Swift & Co Fertilizer manufacture
GB712178A (en) * 1950-07-14 1954-07-21 Ici Ltd Improvements in and relating to the production of nitrogenous fertilizers
DE1002766B (en) * 1951-09-12 1957-02-21 Du Pont Process for the production of a fertilizer
FR1101225A (en) * 1954-03-17 1955-10-04 Azote Office Nat Ind New synthetic nitrogen fertilizers, with controllable nitrification rate
US2835452A (en) * 1954-06-28 1958-05-20 Du Pont Process for granulating urea-formaldehyde fertilizer compositions
US2830036A (en) * 1955-06-06 1958-04-08 Nitro Form Agricultural Chemic Production of fertilizer compositions
US2864685A (en) * 1955-07-14 1958-12-16 Allied Chem Process for mixed fertilizer containing ureaform
US2955930A (en) * 1956-10-19 1960-10-11 Swift & Co Urea-formaldehyde polymers of high agronomic value

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0013307A1 (en) * 1978-11-16 1980-07-23 Allied Corporation Liquid foliar fertilizer compositions containing water-soluble urea-formaldehyde products
GB2226823A (en) * 1988-11-11 1990-07-11 Shaw Chemical Systems Limited Flame retardant composition
GB2226823B (en) * 1988-11-11 1992-03-25 Shaw Chemical Systems Limited Method of flame-proofing
CN117567217A (en) * 2023-11-29 2024-02-20 中化农业（临沂）研发中心有限公司 Solidification-preventing biological hormone type liquid fertilizer and preparation method thereof

Also Published As

Publication number Publication date
DE1247354B (en) 1967-08-17

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