B - Operations – Transporting – 01 – F
Patent
B - Operations, Transporting
01
F
B01F 17/00 (2006.01) C07F 9/09 (2006.01) C08G 63/692 (2006.01) C08G 63/91 (2006.01) C08G 65/327 (2006.01) C09B 67/46 (2006.01)
Patent
CA 2477567
A dispersant which comprises the reaction product of a phosphating agent such as polyphosphoric acid and a compound of formula R-OH wherein R is a residue of a polyester and/or polyether having a polymerisation terminating group and where the ratio of each phosphorus atom of the phosphating agent to RO-H is from 1.3:1 to 3:1. The dispersants are thought to be pyrophosphates.
Cette invention concerne un dispersant comprenant le produit de réaction d'un agent phosphatant tel que l'acide polyphosphorique et d'un composé représenté par la formule R-OH dans laquelle R désigne un résidu d'un polyester et/ou polyéther comprenant un groupe terminal de polymérisation. Dans ce dispersant, le rapport de chaque atome de phosphore de l'agent phosphatant sur RO-H est compris entre 1,3:1 et 3:1. Les dispersants peuvent être des pyrophosphates.
Schofield John David
Simpson Neil Louis
Thetford Dean
Ridout & Maybee Llp
The Lubrizol Corporation
LandOfFree
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