|
US3290369A
(en)
|
|
Recovery of acyclic dicarboxylic acids from mixtures of the same
|
|
US3216481A
(en)
|
|
Recovery of phthalic and maleic acid from solutions
|
|
EP0476009A1
(de)
|
|
Extraktionsverfahren zur entfernung von verunreinigungen aus terephthalsäurefiltrat.
|
|
US2971010A
(en)
|
|
Production of dicarboxylic acid anhydrides
|
|
CA2043152C
(en)
|
|
Production of citric acid
|
|
US4254283A
(en)
|
|
Process for preparing adipic acid with recovery of glutaric and succinic acids
|
|
DE2127851B2
(de)
|
|
Verfahren zur gewinnung von reinem hydrochinon aus dem durch spaltung von p-diisopropylbenzoldihydroperoxid erhaltenen reaktionsgemisch
|
|
US2517276A
(en)
|
|
Process for the purification of 1-ascorbic acid
|
|
US20070093662A1
(en)
|
|
Method of obtaining 2-mercaptobenzothiazole
|
|
JP5079631B2
(ja)
|
|
廃液の減量方法及び廃液の処理方法
|
|
DE2050943C3
(de)
|
|
Verfahren zum Reinigen von rohem p-Aminophenol
|
|
US3644514A
(en)
|
|
Process for separating pure methionine from the hydrolysis product of its nitrile
|
|
US2816923A
(en)
|
|
Conversion of maleic acid to fumaric acid
|
|
US4012451A
(en)
|
|
Process for the separation of 4,4'-dichlorodiphenylsulfone
|
|
US3359283A
(en)
|
|
Recovery of dicarboxylic acid anhydrides from aqueous acid solution
|
|
CS241076B2
(en)
|
|
Method of 0-benzoylbenzoic acid's,hydrogen fluoride's and boron trifluoride's complex decomposition
|
|
US1940146A
(en)
|
|
Process of purifying phenolphthalein
|
|
GB2128496A
(en)
|
|
Multi-stage recrystallization and crystallizer
|
|
DE1277239C2
(de)
|
|
Verfahren zur gewinnung von adipinsaeure aus den sauren waschwaessern der cyclohexan-luft-oxydation
|
|
EP0068248A1
(de)
|
|
Verfahren zur Herstellung von Dithioniten
|
|
KR930002293A
(ko)
|
|
비스페놀 a 페놀 결정 부가물의 정제방법, 이 결정 부가물의 제조방법과 그를 위한 정석 장치 및 비스페놀 a의 제조방법
|
|
US3474142A
(en)
|
|
Processes for preparation of acrylamide
|
|
JPS62275018A
(ja)
|
|
酸性廃液から有価金属及び酸を回収する方法
|
|
RU2070828C1
(ru)
|
|
Способ регенерации медно-ванадиевого катализатора из маточных растворов производства адипиновой кислоты
|
|
US2552584A
(en)
|
|
Preparation of thiourea
|