SU129141A1 - The method of obtaining spinning solutions of polyacrylonitrile or its copolymers in dimethylformamide - Google Patents

The method of obtaining spinning solutions of polyacrylonitrile or its copolymers in dimethylformamide

Info

Publication number
SU129141A1
SU129141A1 SU607345A SU607345A SU129141A1 SU 129141 A1 SU129141 A1 SU 129141A1 SU 607345 A SU607345 A SU 607345A SU 607345 A SU607345 A SU 607345A SU 129141 A1 SU129141 A1 SU 129141A1
Authority
SU
USSR - Soviet Union
Prior art keywords
dimethylformamide
polyacrylonitrile
copolymers
spinning solutions
temperature
Prior art date
Application number
SU607345A
Other languages
Russian (ru)
Inventor
Хуниар Андреас
Фрикке Эвелин
Original Assignee
Германская академия наук (в Берлине)
Германска Академи Наук (в Берлине)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Германская академия наук (в Берлине), Германска Академи Наук (в Берлине) filed Critical Германская академия наук (в Берлине)
Priority to SU607345A priority Critical patent/SU129141A1/en
Application granted granted Critical
Publication of SU129141A1 publication Critical patent/SU129141A1/en

Links

Landscapes

  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polymerization Catalysts (AREA)

Description

Известен способ получени  пр дильных растворов полиакрилонитрила или его со-полимероз в диметилформамиде в присутствии инициаторов .A known method for the preparation of polyacrylonitrile dope solutions or its co-polymers in dimethylformamide in the presence of initiators.

Олисываемын способ по сравнению с известным позвол ет увел 1чить выход продукта и улучшить его качества. Это достигаетс  тем, что в качестве инициатора примен ют перею-си алифатических кислот.The olysyvaeva method compared to the known allows to increase the yield of the product and improve its quality. This is achieved by using peptides of aliphatic acids as an initiator.

Сущность способа заключаете  в том, что мо}юмер и растворитель берут в соотношении от 15 : 85 до 45 : 55, а перекиси алифатических кислот р да Ci - Cis в концентргци х от О до 4% в расчете на общее количество раствора. Полимеризацию ведут при температуре от 30 до 70°, длительность процесса около 50 час.The essence of the method is that mo} umer and solvent take in the ratio from 15: 85 to 45: 55, and peroxides of aliphatic acids of the series Ci - Cis in concentrates from 0 to 4% calculated on the total amount of the solution. The polymerization is carried out at a temperature of from 30 to 70 °, the duration of the process is about 50 hours.

ПрИмер 1. 412,5 г диметилформамида, 137,5 г акрг.лонитрила и 2,75 г .перекиси дилауроила полимеризуют в течение 47 час при температуре 50°. Выход составл ет 88% при относительной в зкости 1,53.EXAMPLE 1 412.5 g of dimethylformamide, 137.5 g of acrylic lonitrile, and 2.75 g of dilauroyl peroxide are polymerized for 47 hours at a temperature of 50 °. The yield is 88% with a relative viscosity of 1.53.

Раствор до пр дени  нагревают в течение часа до температуры 100°, а затем пропзскают через фильеру со 120 отверсти ми диаметром 0,09 мм в осадительную ванну из гексантриола при температ уре 62°. Образовавшиес  нити промывают в ванне с гексантриолом при те.мпературе 90 после чего их подвергают восьмикратной выт жке в ванне из гексантриола при температуре 45°. Получают нити с разрывной прочностью 3,3 г/денье, разрывным здлинением в 23% и относительной прочностью в мокром виде равной 87%.The solution is heated to a temperature of 100 ° C for an hour before being heated, and then projected through a spinneret with 120 holes with a diameter of 0.09 mm into a precipitation bath of hexanetriol at a temperature of 62 °. The yarns formed are washed in a hexanetriol bath at a temperature of 90 after which they are stretched eight times in a hexanetriol bath at a temperature of 45 °. Yarns with a breaking strength of 3.3 g / denier, a breaking length of 23% and a relative wet strength of 87% are obtained.

№ I29I4I- 2 П р и,м е р 2. 412:8 диметилформамида, 137,5 г акрилонитрила, 2,75 г перекиси дилауроила, 2,5 слг метилакрилата полимеризуют в течение 45 час при темнературе 50°. Выход составл ет 89,5% при относительной в зкости J,5- PlCTBOp подвергают пр дению без нагревани  и далее поступают,как в примере 1. При дес тикратной выт жке нити имеют следующую-характеристику: титр 6,2 денье; разрывна  прочность 2,7 г/денье; разрывное удлинение 24%; относительна  прочность нити в виде петли 74%.No. I29I4I- 2 P p and m, me 2. 2. 412: 8 dimethylformamide, 137.5 g of acrylonitrile, 2.75 g of dilauroyl peroxide, 2.5 slg of methyl acrylate are polymerized for 45 hours at a temperature of 50 °. The yield is 89.5% with relative viscosity J, 5-PlCTBOp is spun without heating and then proceeds as in Example 1. With tenfold stretching, the threads have the following characteristics: 6.2 denier titer; burst strength of 2.7 g / denier; breaking elongation of 24%; the relative strength of the filament in the form of a loop is 74%.

Предмет изобретени Subject invention

Способ получени  пр дильных растворов полиакрилонитрила или его сополимерО|В в диметилформамиде в присутствии инициатора, отличающийс  тем, что, с цельк увеличени  выхода и улучщени  свойств продукта, в качестве инициатора примен ют перекиси алифатических жирных кислот в количестве 4%.The method of obtaining the spinning solutions of polyacrylonitrile or its copolymer O | B in dimethylformamide in the presence of an initiator, characterized in that, with the aim of increasing the yield and improving the properties of the product, aliphatic fatty acid peroxide in an amount of 4% is used as an initiator.

SU607345A 1958-09-08 1958-09-08 The method of obtaining spinning solutions of polyacrylonitrile or its copolymers in dimethylformamide SU129141A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU607345A SU129141A1 (en) 1958-09-08 1958-09-08 The method of obtaining spinning solutions of polyacrylonitrile or its copolymers in dimethylformamide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU607345A SU129141A1 (en) 1958-09-08 1958-09-08 The method of obtaining spinning solutions of polyacrylonitrile or its copolymers in dimethylformamide

Publications (1)

Publication Number Publication Date
SU129141A1 true SU129141A1 (en) 1959-11-30

Family

ID=48400315

Family Applications (1)

Application Number Title Priority Date Filing Date
SU607345A SU129141A1 (en) 1958-09-08 1958-09-08 The method of obtaining spinning solutions of polyacrylonitrile or its copolymers in dimethylformamide

Country Status (1)

Country Link
SU (1) SU129141A1 (en)

Similar Documents

Publication Publication Date Title
US2445042A (en) Method of treating oriented acrylonitrile structures
US2786043A (en) Plasticized acrylonitrile compositions
US3066006A (en) Method of processing a tow
US2426719A (en) Wet spinning of acrylonitrile polymers
US2692875A (en) Methacrylonitrile-acrylonitrile copolymers and fibers thereof
SU129141A1 (en) The method of obtaining spinning solutions of polyacrylonitrile or its copolymers in dimethylformamide
GB977942A (en) Spinning of acrylonitrile polymers
US3733386A (en) Process for producing acrylic synthetic fibers improved in the hydrophilicity
US2907096A (en) Shaped polyacrylonitrile structures
US3828014A (en) High shrinkage threads,yarn and fibers from acrylonitrile polymers
US2883260A (en) Production of monofilament of a polymer or copolymer of acrylonitrile
US2692185A (en) Wet spinning of acrylonitrile polymers
US3083071A (en) Treatment of synthetic fiber tow
US3451140A (en) Production of acrylic synthetic fibers
GB775892A (en) Method of producing shaped articles from acrylonitrile polymerisation products
US2851435A (en) Method of improving the textile properties of polyacrylonitrile threads
US3330898A (en) Method for preparing highly shrinkable acrylonitrile polymer fibers
US2129213A (en) Manufacture of threads, bands, films, and the like
US3681275A (en) Acrylonitrile composition improved in yellowness and brightness and production of fibers therefrom
US3767755A (en) Process for producing brilliant acrylic fibers of a noncircular crosssection
GB1236966A (en) Polymerisation of acrylonitrile
GB1109729A (en) Method for the production of polyacrylonitrile conjugate filaments
US3399177A (en) Crimpable fibres of acrylonitrile/nu-methylol acrylamide copolymers
US2879242A (en) Spinning solvent for acrylic fibers
US4001485A (en) Process for spinning acrylic polymers