SU140427A1 - Method for stabilization of glycerol alpha-monomethacrylic ester - Google Patents
Method for stabilization of glycerol alpha-monomethacrylic esterInfo
- Publication number
- SU140427A1 SU140427A1 SU689512A SU689512A SU140427A1 SU 140427 A1 SU140427 A1 SU 140427A1 SU 689512 A SU689512 A SU 689512A SU 689512 A SU689512 A SU 689512A SU 140427 A1 SU140427 A1 SU 140427A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- stabilization
- glycerol
- monomethacrylic ester
- glycerol alpha
- monomethacrylic
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Известно получение моноэфиров глицерина с алифатическими кислотами взаимодействием монохлоргидрина глицерина с натриевыми сол ми алифатических кислот и применение двухатомных фенолов (в частности , гидрохинона) в качестве ингибиторов полимеризации метакриловой кислоты и ее производных.It is known to obtain glycerol monoesters with aliphatic acids by reacting glycerol monochlorohydrin with sodium salts of aliphatic acids and using diatomic phenols (in particular, hydroquinone) as polymerization inhibitors of methacrylic acid and its derivatives.
Предлагаетс способ получени а-монометакрилового эфира глицерина взаимодействием сс-монохлоргидрина глицерина с натриевой солью метакриловой кислоты и применением в качестве ингибиторов пoлимJризации скелетного никел или гидрохинона. Процесс ведут нри нагревании в среде абсолютированного спирта. Новым в предложении вл етс применение скелетного никел дл стабилизации а-монометакрилового эфира глицерина, что дает возможность получить а-монометакриловый эфир в чистом виде с удовлетворительным выходом, в то врем как применение гидрохинона в качестве ингибитора вследствие его летучести приводит к загр знению щелевого продукта.A method of producing glycerol α-monomethacrylic ester by reacting glycerol with cc-monochlorohydrin with sodium methacrylic acid and using skeletal nickel or hydroquinone as inhibitors is proposed. The process is conducted when heated in an environment of absolute alcohol. New in the proposal is the use of skeletal nickel to stabilize glycerol α-monomethacrylic ester, which makes it possible to obtain α-monomethacrylic ester in a pure form with a satisfactory yield, while the use of hydroquinone as an inhibitor due to its volatility leads to contamination of the slit product.
Пример 1. В трехтубусный реактор, емкостью 1 л, снабженный мешалкой и холодильником, помещают 5Г) г (0,5 мол ) а-монохлоргидрина , 54 г (0,5 мол ) натриевой соли метакриловой кислоты, 2иО- .250 г абсолютированного спирта и 2 г скелетного никел . Полученную реакционную массу при перемешивании нагревают в течение 10 часо. По окончании реакции выпадает осадок поваренной соли, от которого освобождаютс декантацией. Соль промывают 2-3 раза небольшими порци ми абсолютированного спирта, который соедин ют с декантированной жидкостью. Спирт отгои ют на колонке Вигре, а оставшуюс масл ную жидкость разгон ют в вакууме.Example 1. In a three-liter reactor with a capacity of 1 l, equipped with a stirrer and a refrigerator, put 5G) g (0.5 mol) a-monochlorohydrin, 54 g (0.5 mol) sodium salt of methacrylic acid, 2iO- .250 g absoluted alcohol and 2 g of skeletal nickel. The resulting reaction mass is heated with stirring for 10 hours. At the end of the reaction, a precipitate of sodium chloride precipitates, which is freed from decantation. The salt is washed 2-3 times with small portions of absolute alcohol, which is combined with the decanted liquid. The alcohol is distilled off on a Vigre column, and the remaining oil liquid is distilled in vacuo.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU689512A SU140427A1 (en) | 1960-12-17 | 1960-12-17 | Method for stabilization of glycerol alpha-monomethacrylic ester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU689512A SU140427A1 (en) | 1960-12-17 | 1960-12-17 | Method for stabilization of glycerol alpha-monomethacrylic ester |
Publications (1)
Publication Number | Publication Date |
---|---|
SU140427A1 true SU140427A1 (en) | 1961-11-30 |
Family
ID=48296432
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU689512A SU140427A1 (en) | 1960-12-17 | 1960-12-17 | Method for stabilization of glycerol alpha-monomethacrylic ester |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU140427A1 (en) |
-
1960
- 1960-12-17 SU SU689512A patent/SU140427A1/en active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
SU140427A1 (en) | Method for stabilization of glycerol alpha-monomethacrylic ester | |
US4285872A (en) | Method for producing glycidyl (metha)acrylate | |
US2413077A (en) | d(+)-alpha, gamma-dihydroxy-beta, beta-dimethyl-butyric-acid-(hydroxy-alkyl)-amides and process for the manufacture of same | |
US2375629A (en) | Ester of alpha-hydroxy isobutyric acid | |
US2811545A (en) | Production of alpha-hydroxy isobutyric and methacrylic acids and their esters | |
US3153077A (en) | Process for preparing organic bis-thiosulfates | |
US2442854A (en) | Process of preparing the oxime of 1-diethyl-amino-4-pentanone | |
US2524838A (en) | Esters of pyridyl-3-carbinol | |
US2846439A (en) | Reaction of threonines with aryl nitriles in a steric inversion process | |
Levene et al. | SYNTHESIS AND OXIDATION OF TERTIARY HYDROCARBONS. | |
ES396478A1 (en) | Gel-forming monoglycerides of cyclic carboxylic acids | |
Eisenhauer et al. | Studies on 4-Hydroxycoumarins. XIV. The Reaction of 4-Hydroxycoumarin with Aromatic Acid Chlorides1 | |
US2405873A (en) | Process for the preparation of alpha-hydroxy carboxylic acids | |
US2305466A (en) | Process for preparation of alpha-hydroxy-beta, beta-dimethyl-gamma-hydroxy butyric acid or gamma-lactone | |
US2413889A (en) | Production of acrylic acid | |
SU438639A1 (en) | The method of obtaining-chloropropionic acid | |
SU561505A3 (en) | The method of obtaining 3- (4-biphenylyl) -buttonic acid or its salts | |
US3275687A (en) | Ester hydrolysis with cation exchange resins | |
US2458450A (en) | Decolorization of esters of acrylic and alpha-alkyl-acrylic acids | |
GB1314054A (en) | Separation of acetic acid water and formic acid | |
SU125553A1 (en) | Method for preparing hydroxyalkyl oxyalkyliminoesters of 6-cyanoalerianic acid | |
SE7909596L (en) | PROCEDURE FOR PREPARING BASIC ESTERS OF SUBSTITUTED HYDROXICYCLOHEXANCHOXYL ACIDS | |
Harris et al. | On the synthesis of pantothenic acid and derivatives | |
SU132212A1 (en) | The method of obtaining fluorinated glycols | |
SU99299A1 (en) | The method of alkylation of 3,5-dicarbmeto-xianiline with octadecylbromide |