SU567729A1 - Method of preparing vinyl alcohol copolymers - Google Patents
Method of preparing vinyl alcohol copolymersInfo
- Publication number
- SU567729A1 SU567729A1 SU7402028941A SU2028941A SU567729A1 SU 567729 A1 SU567729 A1 SU 567729A1 SU 7402028941 A SU7402028941 A SU 7402028941A SU 2028941 A SU2028941 A SU 2028941A SU 567729 A1 SU567729 A1 SU 567729A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- vinyl alcohol
- alcohol copolymers
- preparing vinyl
- copolymer
- isoprene
- Prior art date
Links
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Description
(54) СПОСОБ ПОЛУЧЕНИЯ СОПОЛИМЕРА ВИНИЛОВОГО(54) METHOD FOR OBTAINING A VINYL COPOLYMER
СПИРТА На 100 вес. ч, указанной смеси. |моном ров берут (в вес. ч.): Алкилсульфонат . 1 Двузамешевный фосфат кали 0,78 Персульфат 1сали 0,5 . Метабисульфит |натри 0,1.5 . Вода 100 . Продрлжительностб реакцЕИ 10 ч, выход сополимера 22%, удельна в зкость в ацетоне 0,4, содержание изопрена в сополиме ре, полученном омылением сополимера в нилацетата и изопрена спиртовым растворо щелочи, составл ет. 5%.П р и м е р j 2. Сополимеризацию 95% винилацетата и 5% изопрена провод т, как указано в примере 1, с тем оТличием, что на 100 вес. ч. смеси мономеров берут (в вес. ч.): Вода100 Алкилсульфонат натри 1 Двузамещенный фосфат кали 0,78 Персульфат кали .0,3 Метабисульфит натри 0,1 Продолжительность реакдии 48 ч, Вы. ход сополимера 22,5% удельна в зкость а ацетоне 0,438. Содержание изопрена в сополимере винилового спирта 9,2%, удельна в зкость 0,5%-ного раствора в воде 0,51, Волокна на основе полученных сополимеров формуют из их 17Хг-ных водных растворов в концентрированные водные растворы сульфата натри в следующих услови х: осадительной ванны 400 г/л, пластификационной ванны 21О г/л. Температура . осадительной ванны 43 С, пластификационной ванны 70 С, Фильерна выт окка 10%. Свежесформованное волокно выт гивают на ЗОО%, затем подвергают термообработ ке в течение 5 мин при температуре 200210°С . Свойства модифшшрованных водонерастворимых волокон приведены в таблице.ALCOHOL ON 100 weight. h, this mixture. Monomore take (in the weight. h.): Alkylsulfonat. 1 Double-mixed potassium phosphate 0.78 persalphate 1sali 0.5. Metabisulfite | sodium 0,1.5. Water 100. The reaction time is 10 hours, the copolymer yield is 22%, the specific viscosity in acetone is 0.4, the isoprene content in the copolymer obtained by saponification of the copolymer in nyl acetate and isoprene with an alkali alcohol solution is. 5%. Measurement j 2. The copolymerization of 95% of vinyl acetate and 5% of isoprene was carried out as indicated in Example 1, with a difference of 100% by weight. including monomer mixtures (w / w): Water 100 Sodium alkylsulfonate 1 Disubstituted potassium phosphate 0.78 Potassium persulphate .0.3 Sodium metabisulphite 0.1 Duration 48 h, You. copolymer run of 22.5% specific viscosity in acetone 0.438. The content of isoprene in the copolymer of vinyl alcohol is 9.2%, the specific viscosity of a 0.5% solution in water is 0.51. Fibers based on the obtained copolymers are molded from their 17Xg aqueous solutions into concentrated aqueous solutions of sodium sulfate under the following conditions : precipitation bath 400 g / l, plasticization bath 21O g / l. Temperature . precipitation bath 43 C, plasticization bath 70 C, Filyarna stretched 10%. The freshly formed fiber is drawn at ZOO%, then heat treated for 5 minutes at a temperature of 200210 ° C. The properties of modified water-insoluble fibers are given in the table.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU7402028941A SU567729A1 (en) | 1974-05-31 | 1974-05-31 | Method of preparing vinyl alcohol copolymers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU7402028941A SU567729A1 (en) | 1974-05-31 | 1974-05-31 | Method of preparing vinyl alcohol copolymers |
Publications (1)
Publication Number | Publication Date |
---|---|
SU567729A1 true SU567729A1 (en) | 1977-08-05 |
Family
ID=20586105
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU7402028941A SU567729A1 (en) | 1974-05-31 | 1974-05-31 | Method of preparing vinyl alcohol copolymers |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU567729A1 (en) |
-
1974
- 1974-05-31 SU SU7402028941A patent/SU567729A1/en active
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