SU395402A1 - METHOD FOR STABILIZATION OF CELLULOSE ACETATE - Google Patents
METHOD FOR STABILIZATION OF CELLULOSE ACETATEInfo
- Publication number
- SU395402A1 SU395402A1 SU1451426A SU1451426A SU395402A1 SU 395402 A1 SU395402 A1 SU 395402A1 SU 1451426 A SU1451426 A SU 1451426A SU 1451426 A SU1451426 A SU 1451426A SU 395402 A1 SU395402 A1 SU 395402A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- cellulose acetate
- stabilization
- cellulose
- phenyl
- thermal
- Prior art date
Links
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- Polysaccharides And Polysaccharide Derivatives (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
1one
Изобретение отнооитс « формованию изделий из ацетатов целлюлозы.The invention relates to the molding of cellulose acetate products.
Сложные эфвры целлюлозы, в частности ее ацетаты, при 1перера|батке в подвергают воздействию товышевных температур , что приводит к злачителыной деструкции эфИров, снижению молекул рного веса и ухудшению физижо-механических свойств изделий .Complicated cellulose extracts, in particular its acetates, are subjected to high temperatures in the case of 1perera / yoke, which leads to a serious destruction of the effluent, a decrease in the molecular weight and a deterioration of the physical properties of the products.
Известные стабишизатары, например вмидазол и его производные, стабилизируют ацетаты целлюлозы только от термоокислительНОЙ деструкции, не защища при этом от фотодеструкции .Known stabilization agents, for example, imidazole and its derivatives, stabilize cellulose acetates only from thermo-oxidative degradation, while not protecting them from photo-destruction.
Предложенный способ стабилизации ацетата целлюлозы би.с-4(5)-1фенил-5(4)-м€ти.лфенил-2-б;ифенили1мидазолом позвол ет осуществить стабилизацию от термо- и фотодеструкции одновременно.The proposed method for the stabilization of cellulose acetate bi.c-4 (5) -1-phenyl-5 (4) -m lphenyl-2-b; phenyl-1-imidazole allows stabilization from thermal and photodegradation simultaneously.
Стабилизатор может быть введен на стадии получени ацетата целлюлозы или при переработке эфира из раствора.The stabilizer may be introduced during the step of preparing cellulose acetate or processing the ether from solution.
Пример. В 0,25%-ный раствор ацетилцеллюлозы в ацетоне ввод т бис-4(5)-фенил5 (4) -метилфенил-й-бифенилимидазол в количестве 0,005 моль «а 1 кг ацетата целлюлозы. Из ра-отвора отливают лленжи по стандартному способу.Example. In a 0.25% solution of acetyl cellulose in acetone, bis-4 (5) -phenyl5 (4) -methylphenyl-y-biphenylimidazole is introduced in an amount of 0.005 mol < 1 kg of cellulose acetate. Llengi is poured from the in-hole using the standard method.
Исследуют изменение в зкости: ацетата целлюлозы в процессе термоокислительной дест .ру,кции (;при прогреве при 220° С в среде кислорода в течение 30 мин) и в процессе фотодеструкцш (при 60° С в течение 12 час).Investigate the change in viscosity: cellulose acetate in the process of thermal-oxidative destruction, crusting (; when heated at 220 ° C in oxygen for 30 min) and in the process of photodestruction (at 60 ° C for 12 h).
Полученные результаты предста1влены в таблице.The results obtained are presented in the table.
Удельна в зкость 0,25%ного раствора ацетата целлюлозыThe specific viscosity of a 0.25% cellulose acetate solution
1515
2020
Предмет изобретени Subject invention
Способ стабилизации ацетата целлюлозы путем введени .в полимер производных имидазола , отличающийс тем, что, с целью придани устойчивости 1К термо- и фотодеструкции , используют. би.с-4(5.)-фенил-5(4)-метилфе1Нил-2-бифеш лимидазол .A method of stabilizing cellulose acetate by introducing imidazole derivatives into a polymer, characterized in that, in order to impart 1K stability to thermal and photodestruction, is used. bi.s-4 (5.) -phenyl-5 (4) -methylfe1Nyl-2-bifesh Limidazole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1451426A SU395402A1 (en) | 1970-06-18 | 1970-06-18 | METHOD FOR STABILIZATION OF CELLULOSE ACETATE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1451426A SU395402A1 (en) | 1970-06-18 | 1970-06-18 | METHOD FOR STABILIZATION OF CELLULOSE ACETATE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU395402A1 true SU395402A1 (en) | 1973-08-28 |
Family
ID=20454305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1451426A SU395402A1 (en) | 1970-06-18 | 1970-06-18 | METHOD FOR STABILIZATION OF CELLULOSE ACETATE |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU395402A1 (en) |
-
1970
- 1970-06-18 SU SU1451426A patent/SU395402A1/en active
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