SU610892A1 - Method of modifying acetate fibres - Google Patents

Method of modifying acetate fibres

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Publication number
SU610892A1
SU610892A1 SU762335458A SU2335458A SU610892A1 SU 610892 A1 SU610892 A1 SU 610892A1 SU 762335458 A SU762335458 A SU 762335458A SU 2335458 A SU2335458 A SU 2335458A SU 610892 A1 SU610892 A1 SU 610892A1
Authority
SU
USSR - Soviet Union
Prior art keywords
modifying
acetate fibres
fibers
acetate
phosphorus
Prior art date
Application number
SU762335458A
Other languages
Russian (ru)
Inventor
Игорь Николаевич Ермоленко
Нина Клавдиевна Лунева
Людмила Владимировна Вячеславова
Original Assignee
Институт Общей И Нерганической Химии Ан Белорусской Сср
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Application filed by Институт Общей И Нерганической Химии Ан Белорусской Сср filed Critical Институт Общей И Нерганической Химии Ан Белорусской Сср
Priority to SU762335458A priority Critical patent/SU610892A1/en
Application granted granted Critical
Publication of SU610892A1 publication Critical patent/SU610892A1/en

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  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Description

Изобретение относитс  к области получени химических волокон, в част-. ности, к модификации ацетатных волокон .The invention relates to the field of chemical fiber production, in particular. modification of acetate fibers.

Известен способ получени  ацетатных вол окон, модифицированных фосфорной кислотой HjPOi, или хлорангидридами РСЕа или PCt. fl. Содержание фосфора в модифицированной ацетилцеллюлозе составл ет приблизительно 2%. Модифицированные ацетатные волокна обладают устойчивостью к гидролизу, однако, огнестойкость их мала, впитывающа  способность ограничена и накрашиваемость недостаточна.A known method of producing acetate oxen windows modified with phosphoric acid HjPOi, or with PCCOa or PCt acid chlorides. fl. The phosphorus content in the modified cellulose acetate is approximately 2%. Modified acetate fibers are resistant to hydrolysis, however, their resistance to fire is low, their absorption capacity is limited and dyeability is insufficient.

Наиболее близким к изобретению по технической сущности и достигаемом результату  вл етс  способ получени  модифицированных ацетатных волокон путем хлорацетилировани  ацетилце.ллюлозы с последующей обработкой триэтилфофитот при 130-150°С 2. Содержание фосфора по этому способу не превышает 6%, поэтсму полученный продукт нерастворим в ацетоне, метиленхлориде и смеси, метиленхлорида с этиловым спитом , а негорючесть, ионообменна  емкость н накрашиваемость недостаточны. Целью изобретени   вл етс  увеличение растворимости в органических The closest to the invention according to the technical essence and the achieved result is a method of obtaining modified acetate fibers by chloro acetylation of acetylcellulose followed by treatment with triethylphophyte at 130-150 ° C. 2. The phosphorus content of this method does not exceed 6%, so the resulting product is insoluble in acetone , methylene chloride and mixtures, methylene chloride with ethyl spitu, and incombustibility, ion-exchange capacity and dyeability are insufficient. The aim of the invention is to increase the solubility in organic

растворитель, повьаиение накрашиваемости , негорючести и ионнообменной е кости волокон.solvent, it is paintable, incombustible and ion-exchangeable bone fibers.

Поставленна  цель достигаетс  обработкой ацети.эделлюлозного волокна расплавом смеси пиро- и/или метафосфорной кислоты с мочевиной в соотношении 1:1 с последующей термообработкой при 180-210 0.The goal is achieved by treating the acetyl cellulose fiber with a molten mixture of pyro- and / or metaphosphoric acid with urea in a 1: 1 ratio, followed by heat treatment at 180-210 0.

Модифицированные таким образом волокна имеют 10-12% св занного фосфора при содержании св занной уксусной кислоты от 53 до 38%, ионообменную емкость 0,7-1,5 мг экв/г.The fibers thus modified have 10–12% bound phosphorus with a bound acetic acid content of from 53 to 38%, an ion exchange capacity of 0.7–1.5 mg eq / g.

Смешанный эфир целлюлозы - ацетополифосфат , полученный по данному изобретению, имеет нарушенную регул рность строени  макромолекул, поэтому , соответственно, повышаетс  гибкость волокон VI уменьишетс  их хрупкость .The mixed cellulose ether - acetopolyphosphate obtained according to this invention has an impaired regularity in the structure of macromolecules, therefore, the flexibility of fibers VI increases, and their fragility decreases.

Пример 1. Ацетилцеллюлозное волокно (содержание св занной уксусной кислоты 60,4%) обрабатывают при 130-135 С в пропиточной ванне, состо щей из полифосфорных кислот (пирои/или метафосфорной) и мочевины в соотнсваении 1:1. Последующую термообрабку материала осуществл ют при 180 С с течение 1 ч. Образцы тщательно промывают до отрицательной реакции на фосфор 8 промывных водах. Полученный продукт содержит 10,6% фосфора при содержании св занной уксусной кислоты 33% и имеет ионообменную емкость 1,3 мг-экв/г. Продукт хорошо растворим в смеси равных объемов хлористого метилена и ацетона и описываетс  формулой Г ОН ОН I СвН70а(ОН)о,1ц(СООСНз),„ -Р-0-Р-ОН Пример 2. Обработку ацетилцеллюлозного волокна провод т так же. как ив примере 1, но термообработку ропитанных образцов провод т при 210С в течение 1 ч. Продукт содержит 12,8% фосфора при содержании св занной уксусной кислоты 38%. Полученный смешанный эфир целлюлозы может быть описан бледующей Формулой ГО О I н Н70гОН)в.зг(Сооен,),,, о-р-о-р-он I I L он OR В таблице представлены свойства полученных волокон.Example 1. Acetycellulose fiber (bound acetic acid content 60.4%) is treated at 130-135 ° C in an impregnating bath consisting of polyphosphoric acids (pyro and / or metaphosphoric) and urea in a 1: 1 ratio. The subsequent heat treatment of the material was carried out at 180 ° C for 1 hour. Samples were thoroughly washed until the phosphorus 8 washes were negatively reacted. The resulting product contains 10.6% phosphorus with a bound acetic acid content of 33% and has an ion exchange capacity of 1.3 mEq / g. The product is readily soluble in a mixture of equal volumes of methylene chloride and acetone and is described by the formula G OH OH I C H H 70 a (OH) O, 1 c (COOCH3), " -P-0-P-OH Example 2. Treatment of cellulose acetate fibers is also carried out. as in Example 1, but the heat-treated samples were heat treated at 210 ° C for 1 hour. The product contains 12.8% phosphorus with a bound acetic acid content of 38%. The obtained mixed cellulose ether can be described by the following Formula GO O I n N 70 gON) v.zg (Sooen,) ,,, o-r-o-p-it I I L he OR The table shows the properties of the fibers obtained.

SU762335458A 1976-02-20 1976-02-20 Method of modifying acetate fibres SU610892A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU762335458A SU610892A1 (en) 1976-02-20 1976-02-20 Method of modifying acetate fibres

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Application Number Priority Date Filing Date Title
SU762335458A SU610892A1 (en) 1976-02-20 1976-02-20 Method of modifying acetate fibres

Publications (1)

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SU610892A1 true SU610892A1 (en) 1978-06-15

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569409A1 (en) * 1984-08-22 1986-02-28 Dufour Deren Ets E Process for fireproofing a cellulose-based material and grafted fireproofing and fungicidal product
WO1994002226A1 (en) * 1992-07-20 1994-02-03 Research Corporation Technologies, Inc. Phosphorylation with monomeric metaphosphates

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569409A1 (en) * 1984-08-22 1986-02-28 Dufour Deren Ets E Process for fireproofing a cellulose-based material and grafted fireproofing and fungicidal product
WO1994002226A1 (en) * 1992-07-20 1994-02-03 Research Corporation Technologies, Inc. Phosphorylation with monomeric metaphosphates

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