Packed column and polymerizable compound treating method...

Details Packed column and polymerizable compound treating method... Packed column and polymerizable compound treating method...

2005-05-10

2005-05-10

Zucker, Paul A. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

C562S600000

Reexamination Certificate

active

06891061

ABSTRACT:
Provided are a packed column arranged so as to be capable of effectively preventing polymerization of a polymerizable compound such as a (meth)acrylic acid in treating the compound, and a method for treating a polymerizable compound using the packed column. The packed column, which is provided with a packing support plate and is filled with a packing on the packing support plate, is arranged so as to include a packing layer (B) having a greater percentage of voids than that of a packing layer (A), between the packing support plate and the packing layer (A).

REFERENCES:
patent: 4814117 (1989-03-01), Leva
patent: 5296205 (1994-03-01), Hardison
patent: 6620969 (2003-09-01), Nishimura et al.
patent: 0 719 578 (1996-07-01), None
patent: 03127606 (1991-05-01), None
“Chemical Engineers' Handbook, 5thEdition”, Edited by Robert H. Perry, et al., p. 18-25, 18-29, 18-30 ; and Kagaku Kougaku Binran (Chemical Engineers' Handbook), 5thEdition, Edited by Kagaku Kogaku Kyokai, p. 284-286) (Translation: No).
“Chemical Engineers' Handbook, 5thEdition”, Edited by Robert H. Perry, et al., pp. 18-25, 18-29, 18-30; anc.
Kagaku Kougaku Binran (Chemical Engineers' Handbook), 5thEdition, Edited by Kagaku Kogaku Kyokai, pp. 284-286) (Translation: No).

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