NO152371C
(no )
1985-09-18
Fremgangsmaate for fremstilling av vannfri eller tilnaermet vannfri maursyre
JPS5610131A
(en )
1981-02-02
Recovery of acetic acid
GB1427223A
(en )
1976-03-10
Process for purifying acrylic acid
US2840605A
(en )
1958-06-24
Method of making levulinic acid
SU413136A1
(xx )
1974-01-30
US2437519A
(en )
1948-03-09
Manufacture of anhydrous aliphatic acids from aqueous solutions thereof
US2033978A
(en )
1936-03-17
Concentration of lower aliphatic acids
DE2652224A1
(de )
1977-05-26
Verfahren zur abtrennung von neopentylglykol aus formaldehyd- isobutyraldehyd-kondensationsprodukten
US2157143A
(en )
1939-05-09
Process for dehydration of acetic acid and other lower fatty acids
US2767216A
(en )
1956-10-16
Drying of acrolein by extractive separation with glycerol
US2684981A
(en )
1954-07-27
Recovery of levulinic acid
US2801265A
(en )
1957-07-30
Dehydration of volatile fatty acids through solvents
ES395270A1
(es )
1973-12-01
Un procedimiento para purificar acido fosforico obtenido enhumedo.
US2076184A
(en )
1937-04-06
Process for dehydration of acetic acid and other lower fatty acids
GB1495481A
(en )
1977-12-21
Process for the obtaining of isobutylene of high purity
DE844894C
(de )
1952-07-24
Verfahren zur Gewinnung konzentrierter Buttersaeure
US2194665A
(en )
1940-03-26
Glycerin recovery process
ATE3538T1
(de )
1983-06-15
Verfahren zur rueckgewinnung von carbonsaeuren aus mischungen, die glykolesterderivate dieser saeuren enthalten.
US2251215A
(en )
1941-07-29
Purification of esters
US3525774A
(en )
1970-08-25
Ethylene glycol recovery
GB802054A
(en )
1958-09-24
Improvements relating to the recovery of pure phenol from crude phenol
ES8504655A1
(es )
1985-04-16
"procedimiento para eliminar impurezas insaponificables e insolubles en agua a partir de una mezcla de ciclohexanona y ciclohexanol"
US1950889A
(en )
1934-03-13
Process for the purification of tertiary butyl alcohol
US2018031A
(en )
1935-10-22
Concentration of aliphatic acids
US2114825A
(en )
1938-04-19
Process for partial dehydration of acetic acid and other lower fatty acids