SU107539A1 - Method for producing vinyl chloride-vinyl copolymers containing monomers - Google Patents
Method for producing vinyl chloride-vinyl copolymers containing monomersInfo
- Publication number
- SU107539A1 SU107539A1 SU552976A SU552976A SU107539A1 SU 107539 A1 SU107539 A1 SU 107539A1 SU 552976 A SU552976 A SU 552976A SU 552976 A SU552976 A SU 552976A SU 107539 A1 SU107539 A1 SU 107539A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- vinyl chloride
- vinyl
- containing monomers
- copolymers containing
- styrene
- Prior art date
Links
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- Polymerisation Methods In General (AREA)
Description
При сополимеризации стирола с вимилхлоридом получаютс неоднородные смеси полимеров, которые , по-видимому, ие вл ютс сополимерами . Поэтому до сего времени считалось невозможным получить истинные сополимеры стирола с винилхлоридом. Сополимеризаци на нроходит, очевидно, 15следствие большой разницы в активности мономеров стирола н випилхлорида.The copolymerization of styrene with vimil chloride produces heterogeneous mixtures of polymers, which, apparently, are not copolymers. Therefore, until now, it was considered impossible to obtain true copolymers of styrene with vinyl chloride. Copolymerization probably occurs as a result of the large difference in the activity of styrene monomers and vipilchloride.
11редлагаетс способ получени истинных сополимеров стирола и винилхлорида.11 is a process for the preparation of true copolymers of styrene and vinyl chloride.
Способ заключаетс в том, что стирол предварительно инициируетс окислителем (с образованием, по-видимому, свободных радикалов ), а затем малыми порци ми вводитс в смесь винилхлорида, к которому предварительно добавлен восстановительный книциатор, вследствие чего активности мономеров сравниваютс и процесс сополимеризации может проходить в широком диапазоне температур.The method consists in the fact that styrene is preliminarily initiated by an oxidizing agent (with the formation of apparently free radicals), and then in small portions is introduced into a mixture of vinyl chloride, to which a reducing scribe is previously added, as a result of which the monomer activities are compared and the copolymerization process can take place wide range of temperatures.
Полученные по такому способу сополимеры в отличие от поливинилх .лорида или его смесей с полистиролом обладают ценным техническим свойством - растворимостью 15 этилацетате и дихлорэтане , что позвол ет примен ть эти сополимеры дл лаковых покрытий вместо дефицитных перхлорвипиловых смол.The copolymers obtained by this method, unlike polyvinyl chloride or its mixtures with polystyrene, have a valuable technical property - solubility of 15 ethyl acetate and dichloroethane, which makes it possible to use these copolymers for lacquer coatings instead of scarce perchlorovalent resins.
II р и ме р.II p and me p.
В эмульсию или суспензию винилхлорида, в которую заранее загружено необходимое количество восстановител (соли сернистой кислоты или двухвалентного железа ), непрерывпо или ступенчато подаетс через микродозатор стирол или стирол с винилидепхлоридом в виде эмульсии, содержащей окислитель (гидроперекиси, персульфаты и др.). Процесс ведетс под давлением 6 -14 атм и температуре 30 - 70. Соотношение винилхлорида и -стирола 4:0,01. Количество восстановител и окислител в эквимолеку.л рных соотношени х от 0,1 до 0,5 и к сумме мономеро. Эмульгатор беретс в количестве 1 % к воде .In the emulsion or suspension of vinyl chloride, in which the required amount of the reducing agent (sulfurous acid or ferrous iron salts) is preloaded, is continuously or stepwise supplied through a styrene or styrene microdosing unit with vinylidenechloride in the form of an emulsion containing an oxidant (hydroperoxide, persulfates, etc.). The process is conducted at a pressure of 6-14 atm and a temperature of 30 to 70. The ratio of vinyl chloride and styrene is 4: 0.01. The amount of reducing agent and oxidant in equimolecular ratios from 0.1 to 0.5 and to the amount of monomero. The emulsifier is taken in the amount of 1% to water.
Предмет изобретени Subject invention
Способ получени сополимеров винилхлорида с винилсодержащими мономерами, отличающийс тем, что, с целью увеличени растворидюсти полимера винилхлорида в органических растворител х дл получени технически полезных лаков покрытий, винилхлорид подвергают совместной полимеризации со стиролом.A process for the preparation of copolymers of vinyl chloride with vinyl-containing monomers, characterized in that, in order to increase the solubility of the vinyl chloride polymer in organic solvents to obtain technically useful coating varnishes, vinyl chloride is subjected to polymerization with styrene.
вз тым в количестве до lOVi, в присутствии от 1 до 2 и винилиденхлорида или без пего 15 водной среде )5 пр сутст Я и известных эмульгаторо15 под давлением 6-14 пшм путем постепенного прибавлени стирола, предварительно инициированного окислительным инициатором, к винилхлориду, содержащему добавку восстановител .taken in an amount of up to lOVi, in the presence of 1 to 2 and vinylidene chloride or without 15 water) 5 right day and known emulsifier under pressure of 6-14 psm by gradually adding styrene, previously initiated by the oxidative initiator, to the vinyl chloride containing the additive reductant
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU552976A SU107539A1 (en) | 1956-05-31 | 1956-05-31 | Method for producing vinyl chloride-vinyl copolymers containing monomers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU552976A SU107539A1 (en) | 1956-05-31 | 1956-05-31 | Method for producing vinyl chloride-vinyl copolymers containing monomers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU107539A1 true SU107539A1 (en) | 1956-11-30 |
Family
ID=48380731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU552976A SU107539A1 (en) | 1956-05-31 | 1956-05-31 | Method for producing vinyl chloride-vinyl copolymers containing monomers |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU107539A1 (en) |
-
1956
- 1956-05-31 SU SU552976A patent/SU107539A1/en active
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