C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 8/00 (2006.01) C08F 110/08 (2006.01)
Patent
CA 2381377
Polyalkyl hydroxyaromatics may be prepared from polyalkylenes and hydroxyaromatics in the presence of an acid catalyst and an organic solvent having a boiling point range with an initial boiling point value of below or about the boiling point of the selected hydroxyaromatic reactants and final boiling point of above or equal to about the boiling point of alkylhydroxyaromatic by-product of the reaction. Using this method, accumulation of undesirable alkylhydroxyaromatic by-product/s in a reaction vessel may be minimized, and/or viscosity of polyalkyl hydroxyaromatic product reduced, allowing for increased ease of transfer and transportation.
Selon l'invention, des polyalkyle-hydroxyaromatiques peuvent être préparés à partir de polyalcoylènes et d'hydroxyaromatiques en présence d'un catalyseur acide et d'un solvant organique présentant une gamme d'ébullition avec un point d'ébullition initial inférieur ou égal à celui des réactifs hydroxyaromatiques choisis, et un point d'ébullition final supérieur ou égal à celui des produits secondaires alkyle-hydroxyaromatiques de la réaction. Ce procédé permet de minimiser l'accumulation de produits secondaires alkyle-hydroxyaromatiques indésirables dans une cuve à réaction, et/ou de réduire la viscosité des produits polyalkyle-hydroxyaromatiques, permettant ainsi un transfert et un transport simplifiés.
Huntsman Petrochemical Corporation
Smart & Biggar
LandOfFree
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