Reference

Manufacture of ammonium glyphosate via a gas-solid reaction system

Manufacture of ammonium glyphosate via a gas-solid reaction system. Day, Thomas Mccabe; Gillespie, Jane Laura; Kramer, Richard Melvyn ( Passley, Paul Leonard, USA). PCT Int. Appl. WO 9640697 A1 19 Dec 1996, 26 pp. DESIGNATED STATES: W: AM, AU, AZ, BB, BG, BR, BY, CA, CN, CZ, EE, GE, HU, IS, JP, KG, KR, KZ, LK, LR, LT, LV, MD, MG, MK, MN, MX, NO, NZ, PL, RO, RU, SG, SI, SK, TJ, TM, TR, TT, UA, UZ, VN, AM, AZ, BY, KG, KZ, MD, RU, TJ; RW: AT, BE, BF, BJ, CF, CG, CH, CI, CM, DE, DK, ES, FI, FR, GA, GB, GR, IE, IT, LU, MC, ML, MR, NE, NL, PT, SE, SN, TD, TG. (English). (World Intellectual Property Organization). CODEN: PIXXD2. CLASS: ICM: C07F009-38. APPLICATION: WO 1996-US3082 5 Mar 1996. PRIORITY: US 1995-485316 7 Jun 1995. DOCUMENT TYPE: Patent CA Section: 45 (Industrial Organic Chemicals, Leather, Fats, and Waxes) Section cross-reference(s): 5 Solid N-phosphonomethylglycine (glyphosate acid) (I) in wet cake form is charged to a suitable mixer/reactor equipped with a jacket cooled with H2O or other suitable heat transfer facilitating means and a stoichiometric equiv. of anhyd. NH3(g) is fed to the mixer for direct reaction with I as it is agitated within the mixer. The moisture content of the glyphosate wet cake, the design of the mixer including a preferred close tolerance relation between the inner walls of the reactor and its mixing impellers together with the relative location of the NH3(g) inlet in the mixer/reactor and maintenance of a reaction temp. of ￡60° are all important process variables. The ammonium glyphosate thereby produced is a highly sorptive, H2O-sol.There are some commonly used reagents with their cas registry numbers 7664-41-7 and 40465-66-5 in this article. powder suitable for end use as a plant growth regulator or as a herbicide without further processing. Due to the highly sorptive character of the reaction product, it is particularly well-suited for further formulation to absorb/adsorb a high level of adjuvants, e.g., wetting agents, anti-foaming agents and, in particular, surfactants. .