SU640994A1 - Method of obtaining butyraldehyde copolymers - Google Patents
Method of obtaining butyraldehyde copolymersInfo
- Publication number
- SU640994A1 SU640994A1 SU772447334A SU2447334A SU640994A1 SU 640994 A1 SU640994 A1 SU 640994A1 SU 772447334 A SU772447334 A SU 772447334A SU 2447334 A SU2447334 A SU 2447334A SU 640994 A1 SU640994 A1 SU 640994A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- copolymers
- obtaining
- butyraldehyde
- aldehyde
- oil
- Prior art date
Links
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Description
Изобретение относитс к технологии получени простых полиэфиров, в частност сополимеров масл ного альдегнда с виниловыми мономерами. Известен способ получени сополимеро алифатических альдегидов, в том числе масл ного, с с -олефинами сополимериза- цией мономеров под действием катализатора , состо щего из металлоорганических соединений металлов 1-Ш групп fl . Наиболее близкий к описываемому изоб ретению по техническ:ой сущности способ получени сополимеров масл ного альдеги да сополймеризацией его состиролом в среде ароматических углеводородов при( -75 ) (-8О) С Б присутствии в качестве катализатора эфиратов трехфгористого бора 23 . Недостатком этого способа вл етс относительно низка термосгабильность получаемых сополимеров. Цель изобретени - увеличение гермостабильности сополимеров. Эта иель достигаетс применением в качестве винилового мономера 66,6- 233,3 мол.% (от масл ного альдегида) оС ,п-диметилстирола. Предпочтительно процесс сополимеризации провод т при (-78) С в толуоле (10 мл на О, О5 мол.% мономерной смеси) в присутствии этилового эфирага грехфтористого бора (0,20 ,3 мол.%). Катализатор разлагают прибавлением спиртового раствора аммиака, а полимер осаждают метанолом. Составы полученных сополимеров определены по содержанию углерода в сополимере и методом оксимировани , по которому вычислено количество альдегидных единиц, св занных ацетальными св з ми. Эти данные показывают, что только часть альдегидных единиц ,при присоединении образуют аце- тальные св зи т.е. сополимер имеет следующую структуру: Г(-ОСН-) -(ОН, 11This invention relates to the technology of producing polyethers, in particular, copolymers of oil aldegde with vinyl monomers. A known method of producing copolymer aliphatic aldehydes, including oil, with α-olefins, is copolymerized by monomers under the action of a catalyst consisting of organometallic compounds of metals 1 to III groups fl. The closest to the described invention according to the technical essence is the method of obtaining oil aldehyde copolymers and its copolymerization with a styrene in the medium of aromatic hydrocarbons at (-75) (-8O) CB with the presence of trihydrogenic boron ester as a catalyst 23. The disadvantage of this method is the relatively low thermal stability of the resulting copolymers. The purpose of the invention is to increase the thermostability of the copolymers. This gel is achieved by using as a vinyl monomer 66.6- 233.3 mol.% (From oil aldehyde) ° C, p-dimethylstyrene. Preferably, the copolymerization process is carried out at (-78) C in toluene (10 ml per O, O5 mol% monomer mixture) in the presence of ethyl boron sulphuric fluoride (0.20, 3 mol%). The catalyst is decomposed by the addition of an alcoholic solution of ammonia, and the polymer is precipitated with methanol. The compositions of the copolymers obtained are determined by the carbon content of the copolymer and by the method of oximation, from which the number of aldehyde units bound by acetal bonds is calculated. These data show that only part of the aldehyde units, upon attachment, form acetal bonds, i.e. the copolymer has the following structure: G (-OCH-) - (OH, 11
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772447334A SU640994A1 (en) | 1977-01-27 | 1977-01-27 | Method of obtaining butyraldehyde copolymers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772447334A SU640994A1 (en) | 1977-01-27 | 1977-01-27 | Method of obtaining butyraldehyde copolymers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU640994A1 true SU640994A1 (en) | 1979-01-05 |
Family
ID=20693530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU772447334A SU640994A1 (en) | 1977-01-27 | 1977-01-27 | Method of obtaining butyraldehyde copolymers |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU640994A1 (en) |
-
1977
- 1977-01-27 SU SU772447334A patent/SU640994A1/en active
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