SU134870A1 - The method of obtaining fibers from polyvinyl alcohol - Google Patents
The method of obtaining fibers from polyvinyl alcoholInfo
- Publication number
- SU134870A1 SU134870A1 SU667226A SU667226A SU134870A1 SU 134870 A1 SU134870 A1 SU 134870A1 SU 667226 A SU667226 A SU 667226A SU 667226 A SU667226 A SU 667226A SU 134870 A1 SU134870 A1 SU 134870A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- polyvinyl alcohol
- polymer
- fiber
- obtaining fibers
- obtaining
- Prior art date
Links
Description
При термической обработке волокна нз поливпнилово|о спирта iip:i 210-220° происходит пожелтение волокпа в результате наличи в полимере ацетата натри , трудно удал емого при изготовлении полимера.During the heat treatment of the fiber with polyvipneal alcohol iip: i 210-220 °, the filament yellows as a result of the presence of sodium acetate in the polymer, which is difficult to remove in the manufacture of the polymer.
Окраска волокна не исчезает при дальнейших операпи х и промыв ках, остава сь на готовом волокне. Даже содержанке натри ; количестве 0,2% вызывает легкое потемнение волокна.The color of the fiber does not disappear with further operation and washing, remaining on the finished fiber. Even kept a woman; the amount of 0.2% causes a slight darkening of the fiber.
Предложенный способ предотвращени пожелтени lio.noKiia и:-; по ливинилового спирта в процессе получени полимера заключаетс и т(м, что в раствор полимера винилового спирта перед обезвоздушиванием его и до процесса формовани добавл ют разбавленную серную кислот; в строга эквивалентных количествах соответственно содержанию в полимере ацетата натри .The proposed method to prevent yellowing lio.noKiia and: -; polyvinyl alcohol in the process of obtaining the polymer is t (m, that dilute sulfuric acid is added to the polymer solution of vinyl alcohol before it is dehydrated and before the molding process; in equivalent amounts according to sodium acetate in the polymer.
По реакции: 2CH3COONa + H2S04-- 2(:НзСООН-гNaaSO, образуютс уксусна кислота, удал ема в процессе формировани и сун.гкч. и сульфат натри , наличие которого в полимере способствует чолг-ул According to the reaction: 2CH3COONa + H2S04-- 2 (: NzCOOH-gNaaSO, acetic acid is formed, which is removed during the formation process and the ses-hgh and sodium sulfate, whose presence in the polymer contributes to chol-ul
Таки.м мето.аом исключаетс пожелтение волокна.This method eliminates the yellowing of the fiber.
Предмет изобретени Subject invention
(Способ иолучеил волокна лз поливинилового спирта с нрнмснением термической обработки его, отличающийс тем. что, с целью продотвращени пожелтени волокна в процессе термической обработки. раствор полимера винилового спирта перед обезвоздушнванпем его Ь процесса формовки добавл ют разбавлеиичю серную кислоту.(A method of obtaining fiber fibers of polyvinyl alcohol with thermal treatment, characterized in that, in order to prevent the fiber from yellowing during thermal processing. A solution of a polymer of vinyl alcohol before it is removed from the molding process, dilute sulfuric acid is added to it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU667226A SU134870A1 (en) | 1960-05-16 | 1960-05-16 | The method of obtaining fibers from polyvinyl alcohol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU667226A SU134870A1 (en) | 1960-05-16 | 1960-05-16 | The method of obtaining fibers from polyvinyl alcohol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU134870A1 true SU134870A1 (en) | 1960-11-30 |
Family
ID=48291213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU667226A SU134870A1 (en) | 1960-05-16 | 1960-05-16 | The method of obtaining fibers from polyvinyl alcohol |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU134870A1 (en) |
-
1960
- 1960-05-16 SU SU667226A patent/SU134870A1/en active
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