Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Reexamination Certificate
2005-01-25
2005-01-25
Zucker, Paul A. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
Reexamination Certificate
active
06846948
ABSTRACT:
Butyl acrylate is prepared by reacting acrylic acid and butanol in a reactor in the presence of an esterification catalyst the water formed being entrained by distillation in a column (2) in the form of a heteroazeotropic mixture with butanol mixture following condensation, being separated in a decanter (3) to give an upper, organic phase which is recycled to the top of the distillation column (2) and a lower, aqueous phase which is drawn off. The reaction is conducted with deferred introduction of part of the butanol at the top of the distillation column (2) or to the decanter (3) or to the reactor (1), the butanol/acrylic acid molar ratio being initially between 0.5 and 1 before rising to between 1 and 1.5 following the completion of the deferred introduction of the butanol.
REFERENCES:
patent: 4698440 (1987-10-01), Blair et al.
patent: 5659072 (1997-08-01), Bessalem et al.
patent: 6025520 (2000-02-01), Suzuki et al.
patent: 0 202 610 (1986-11-01), None
Patent Abstract of Japan, vol. 1998, No. 12, Oct. 31, 1998 & JP 10 182554 A (Asahi Chem Ind Co Ltd), Jul. 7, 1996.
Bessalem Jacqueline
Riondel Alain
Arkema
Millen White Zelano & Branigan P.C.
Zucker Paul A.
LandOfFree
Process for preparing butyl acrylate by direct esterification does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for preparing butyl acrylate by direct esterification, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing butyl acrylate by direct esterification will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3434502