SU69330A1 - Bakery Oven - Google Patents
Bakery OvenInfo
- Publication number
- SU69330A1 SU69330A1 SU4521A SU4521A SU69330A1 SU 69330 A1 SU69330 A1 SU 69330A1 SU 4521 A SU4521 A SU 4521A SU 4521 A SU4521 A SU 4521A SU 69330 A1 SU69330 A1 SU 69330A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- bakery oven
- acid
- oxyanthraquinone
- hydrolysis
- anthraquinone
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
-Оксиантрахинон, примен емый дл синтеза прочных красителей антрахйнонового р да, получаетс обычно заменой сульфогруппы на лидроксил щелочным или известковым плавом солей oS - с:/льфокислоты антрахинона в автоклаве при высокой температуре. -Oxyanthraquinone, used to synthesize strong anthraquinone dyes, is usually obtained by replacing the sulfo group with lidroxyl with alkaline or lime lime salts of oS - with: / anthraquinone acid in the autoclave at high temperature.
Однако помимо продолжительного времени, требуемого дл такого превращени (15-30 час), ввделение о -оксиантрахинона св зано, во-аервнх, о об зательным нагревом или разварной реакционной массы и ее нейтрализацией минеральной кислотой и, во-вторнх, с ее переосаццением или перекристаллизацией .However, in addition to the length of time required for such a transformation (15-30 hours), the addition of o-oxyanthraquinone is associated, in particular, with necessary heating or boiling of the reaction mass and its neutralization with mineral acid and, secondly, with its reincarnation or recrystallization.
Предлагаемый способ отличаетс , тем, что с -оксиантрахинон может бнть получен автоклавным гидролизом о -су ьфокислотн антрахинона или ее солей в воде илл слабой минеральной кислоте при высокой температуре. Таким образом, в отличие от кислого гидролиза сульфокислот различных ароматических производных, привод щего обычно к замене сульфогруппы на водород с образованием несульфированных исходных соединений (например углеводородов ), в этом случае гидролиз в кислой среде ведет к образованию оксиспединени .The proposed method is different in that C-hydroxyanthraquinone can be obtained by autoclave hydrolysis of the acidic acid of anthraquinone or its salts in water or weak mineral acid at high temperature. Thus, unlike the acid hydrolysis of sulphonic acids of various aromatic derivatives, usually leading to the replacement of the sulfo group by hydrogen with the formation of non-sulfated starting compounds (for example, hydrocarbons), in this case hydrolysis in an acidic medium leads to the formation of oxysulfonate.
(jL -Оксиантрахинон в охлажденной реакционной массе находитс обычно в возогн ннож состо нии, в виде прекрасных кристаллов, с температурой плав(jL-Oxyanthraquinone in the cooled reaction mass is usually in a supernatural state, in the form of fine crystals, with a melt temperature
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU4521A SU69330A1 (en) | 1946-05-21 | 1946-05-21 | Bakery Oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU4521A SU69330A1 (en) | 1946-05-21 | 1946-05-21 | Bakery Oven |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SU4619A1 SU4619A1 (en) | 1928-02-29 |
| SU69330A1 true SU69330A1 (en) | 1946-11-30 |
Family
ID=52395473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU4521A SU69330A1 (en) | 1946-05-21 | 1946-05-21 | Bakery Oven |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU69330A1 (en) |
-
1946
- 1946-05-21 SU SU4521A patent/SU69330A1/en active
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