RU94027745A - Method for production of copolymers having high water-retaining capacity - Google Patents

Method for production of copolymers having high water-retaining capacity

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Publication number
RU94027745A
RU94027745A RU94027745/04A RU94027745A RU94027745A RU 94027745 A RU94027745 A RU 94027745A RU 94027745/04 A RU94027745/04 A RU 94027745/04A RU 94027745 A RU94027745 A RU 94027745A RU 94027745 A RU94027745 A RU 94027745A
Authority
RU
Russia
Prior art keywords
acrylic acid
acetate
polysaccharide
alkali metal
concentration
Prior art date
Application number
RU94027745/04A
Other languages
Russian (ru)
Other versions
RU2089561C1 (en
Inventor
А.Л. Буянов
Л.Г. Ревельская
Original Assignee
Акционерное общество закрытого типа - Научно-внедренческая фирма "АСПА"
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Application filed by Акционерное общество закрытого типа - Научно-внедренческая фирма "АСПА" filed Critical Акционерное общество закрытого типа - Научно-внедренческая фирма "АСПА"
Priority to RU94027745A priority Critical patent/RU2089561C1/en
Publication of RU94027745A publication Critical patent/RU94027745A/en
Application granted granted Critical
Publication of RU2089561C1 publication Critical patent/RU2089561C1/en

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Abstract

FIELD: chemistry of high molecular weight compounds. SUBSTANCE: bicomponent system which contains cobalt (II) acetate and persulfate of alkali metal or of ammonium at their molar ratio 1:0.5-1:60 is used as initiator. Copolymerization of acryl acid or acryl acid and acryl amide with water soluble allyl ether of polysaccharide is carried out in aqueous solution. Said ether has formula [CHO(OH)-(R)-(R)], where RisOH, and Ris O-CH-CH=CH,, x= 0.5-2.5, y=0.05-1.1, z=1.5-3, n=50-3050. The process takes place at temperature being changed during polymerization from 50 to 130 C, concentration of cobalt (II) acetate is (0.05-0.7) •10mol/l, concentration of persulfate of alkali metal or of ammonium is (0.35-3.0) •10mol/l, concentration of said allyl ether of polysaccharide is 0.03-5.0 mass % and that of monomer is 15-40 mass %. EFFECT: simplifies the method.

Claims (1)

Изобретение относится к химии высокомолекулярных соединений, а именно к получению полимерных супервлагоабсорбентов на основе сшитых сополимеров акриловой кислоты или акриловой кислоты и акриламида с аллиловыми эфирами полисахаридов, которые могут найти применение в садовопарковом и сельском хозяйстве для повышения влагоемкости и улучшения структуры почв, а также во многих других отраслях промышленности. Для упрощения способа при сохранении высокой конверсии мономеров и низкого содержания водорастворимой золь-фракции в сополимере в качестве радикального инициатора используют двухкомпонентную систему, содержащую ацетат кобальта (III) и персульфат щелочного металла или аммония при их мольном соотношении 1:0,5-1:60. Сополимеризацию акриловой кислоты или акриловой кислоты и акриламида с водорастворимым аллиловым эфиром полисахарида общей формулы, приведенной в описании, проводят в водном растворе при температуре, изменяющейся в процессе сополимеризации от 50 до 130°С, и концентрации ацетата кобальта (III) (0,05-0,7)•10-3 моль/л, персульфата щелочного металла или аммония (0,35-3,0)•10-3 моль/л, водорастворимого аллилового эфира полисахарида 0,03-5,0 мас.% и сомономеров 15-40 мас.%.The invention relates to the chemistry of macromolecular compounds, namely to the production of polymer super moisture adsorbents based on crosslinked copolymers of acrylic acid or acrylic acid and acrylamide with allyl esters of polysaccharides, which can be used in gardening and agriculture to increase moisture capacity and improve soil structure, as well as in many other industries. To simplify the method while maintaining a high conversion of monomers and a low content of water-soluble sol fraction in the copolymer, a two-component system containing cobalt (III) acetate and alkali metal or ammonium persulfate in their molar ratio of 1: 0.5-1: 60 is used as a radical initiator . The copolymerization of acrylic acid or acrylic acid and acrylamide with a water-soluble allyl ether of the polysaccharide of the general formula given in the description is carried out in an aqueous solution at a temperature that varies from 50 to 130 ° C during the copolymerization and the concentration of cobalt (III) acetate (0.05- 0.7) • 10 -3 mol / L, alkali metal or ammonium persulfate (0.35-3.0) • 10 -3 mol / L, water-soluble allyl ether polysaccharide 0.03-5.0 wt.% And comonomers 15-40 wt.%.
RU94027745A 1994-07-21 1994-07-21 Method of synthesis of copolymers exhibiting high moisture retentivity RU2089561C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU94027745A RU2089561C1 (en) 1994-07-21 1994-07-21 Method of synthesis of copolymers exhibiting high moisture retentivity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU94027745A RU2089561C1 (en) 1994-07-21 1994-07-21 Method of synthesis of copolymers exhibiting high moisture retentivity

Publications (2)

Publication Number Publication Date
RU94027745A true RU94027745A (en) 1996-07-10
RU2089561C1 RU2089561C1 (en) 1997-09-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU94027745A RU2089561C1 (en) 1994-07-21 1994-07-21 Method of synthesis of copolymers exhibiting high moisture retentivity

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2187978B1 (en) * 2007-08-30 2011-03-02 Basf Se Method for the production of water-absorbing polymer particles by polymerizing drops of a monomer solution
CN103450385B (en) * 2013-08-19 2016-05-18 杭州电子科技大学 A kind of preparation method of high-molecular humidity-controlling agent that can highly effective humidity conditioning
RU2623769C1 (en) * 2016-01-27 2017-06-29 Общество с ограниченной ответственностью "Научно-производственная Фирма "ХимЛаб" Composition of nanocompose sorbent for arid soils
RU2634428C2 (en) * 2016-03-21 2017-10-30 федеральное государственное бюджетное образовательное учреждение высшего образования "Воронежский государственный университет" (ФГБОУ ВО "ВГУ") Method for producing superabsorbent containing microelements

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RU2089561C1 (en) 1997-09-10

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