SU857107A1 - Method of purifying polyethyleneglycol dimethylacrylates - Google Patents
Method of purifying polyethyleneglycol dimethylacrylates Download PDFInfo
- Publication number
- SU857107A1 SU857107A1 SU792828597A SU2828597A SU857107A1 SU 857107 A1 SU857107 A1 SU 857107A1 SU 792828597 A SU792828597 A SU 792828597A SU 2828597 A SU2828597 A SU 2828597A SU 857107 A1 SU857107 A1 SU 857107A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- dimethylacrylates
- polyethyleneglycol
- purifying
- purification
- esters
- Prior art date
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
1one
Изобретение относитс к нефтехимическому производству, в частности к усовершенствованному способу очистки диметакрилатов, полиэтилангликолей , которые могут быть использованы дл получени наполненных пластиков, лаков, анаэробных герметиков.The invention relates to petrochemical production, in particular, to an improved method for cleaning dimethacrylates, polyethylene glycols, which can be used to obtain filled plastics, varnishes, anaerobic sealants.
Известны различные способы очистки эфиров, в которых большое значение дл выбора способа очистки имеет температура кипени и молекул рна масса очищаемого вещества.Various methods for the purification of esters are known, in which the boiling point and molecular weight of the substance to be purified are of great importance for the choice of purification method.
Низкомолекул рные эфиры различных кислот легко очищаютс перегонкой, например с вод ным паром или в присутствии азеотропообразующего аген-Low molecular weight esters of various acids are easily purified by distillation, for example, with steam or in the presence of an azeotropic agent.
таО.tao
Известно, что дл предотвращвШ1 полимеризации низших эфиров акриловой кислоты в процессе дистилл ции используют различные ингибиторы: гидрохинон , его эфиры, крезолы, фенолы дифениламин, фенотиазин, соединени меда, молекул рный кислород J2J.It is known that various inhibitors are used to prevent the polymerization of lower acrylic acid esters during the distillation process: hydroquinone, its esters, cresols, diphenylamine phenols, phenothiazine, honey compounds, molecular oxygen J2J.
Кроме того, известно что очистку диметакрИлатдиэтиленглйкол , имеющего молекул рную массу не более 250, ведут вакуумной разгонкой З}.In addition, it is known that the purification of dimethacrylate with a molecular weight of not more than 250 is carried out by vacuum distillation.
Однако эта разгонка не обеспечивает очистку диметакрилаттриэтиденгликол , именнцего молекул рную массу 286, так как выход целевого зфира падает до 10%.However, this distillation does not provide for the purification of dimethacrylate triethylene glycol, which has a molecular weight of 286, since the yield of the desired ester drops to 10%.
Цель изобретени - обеспечение The purpose of the invention is to provide
to очистки высокомолекул рн |)с диметакриловых эфиров полизтиленгликолей с помсшц ю вакуумной перегонки и получение высоких показатели выхода очищаемого эфира.to clean high molecules pH |) from polymethylene glycol dimethacrylate esters from vacuum distillation and to obtain high yields of purified ether.
1515
Поставленна цель достигаетс тем, что вакуумную перегонку ведут в присутствии 5-10 вес.% хлорного железа.The goal is achieved by the fact that vacuum distillation is carried out in the presence of 5-10 wt.% Ferric chloride.
Этот способ обеспечивает очистку высокомолекул рных эфиров - димета20 крилатов-п-этнленгликолей, где п менее или равно 6, с выходом 50-80%.This method ensures the purification of high molecular weight esters - dimetha 20 crylates-p-ethnylene glycols, where n is less than or equal to 6, with a yield of 50-80%.
Использование других ингибиторов таких как сернокислое железо, сульUse of other inhibitors such as ferrous sulfate, sul
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU792828597A SU857107A1 (en) | 1979-08-14 | 1979-08-14 | Method of purifying polyethyleneglycol dimethylacrylates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU792828597A SU857107A1 (en) | 1979-08-14 | 1979-08-14 | Method of purifying polyethyleneglycol dimethylacrylates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU857107A1 true SU857107A1 (en) | 1981-08-23 |
Family
ID=20854461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU792828597A SU857107A1 (en) | 1979-08-14 | 1979-08-14 | Method of purifying polyethyleneglycol dimethylacrylates |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU857107A1 (en) |
-
1979
- 1979-08-14 SU SU792828597A patent/SU857107A1/en active
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