RU95122598A - N-CYANOMETHYLATED CHITOSANS, PRODUCTS OF THEIR HYDROLYSIS, METHOD OF THEIR RECEIVING AND APPLICATION - Google Patents

N-CYANOMETHYLATED CHITOSANS, PRODUCTS OF THEIR HYDROLYSIS, METHOD OF THEIR RECEIVING AND APPLICATION

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Publication number
RU95122598A
RU95122598A RU95122598/04A RU95122598A RU95122598A RU 95122598 A RU95122598 A RU 95122598A RU 95122598/04 A RU95122598/04 A RU 95122598/04A RU 95122598 A RU95122598 A RU 95122598A RU 95122598 A RU95122598 A RU 95122598A
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RU
Russia
Prior art keywords
cyanomethylated
hydrolyzed
chitosan according
chitosan
cyanomethylated chitosan
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RU95122598/04A
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Russian (ru)
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RU2158270C2 (en
Inventor
Йорг ХААС
Мартин КУН
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Циба СК Холдинг АГ
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Publication of RU95122598A publication Critical patent/RU95122598A/en
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Publication of RU2158270C2 publication Critical patent/RU2158270C2/en

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Claims (12)

1. N-цианометилированный хитозан, содержащий звенья формулы I
Figure 00000001

где n1 равняется 0,6, предпочтительно 0,05 - 0,20,
n2 равняется 0 - 0,20, предпочтительно 0,05 - 0,10,
n3 + n4 равняется 0,4 - 1,0, предпочтительно 0,8 - 0,95.1. N-cyanomethylated chitosan containing units of the formula I
Figure 00000001

where n 1 is equal to 0.6, preferably 0.05 to 0.20,
n 2 is 0-0.20, preferably 0.05-0.10,
n 3 + n 4 is 0.4 to 1.0, preferably 0.8 to 0.95. 2. Способ получения N-цианометилированного хитозана по п. 1, который включает взаимодействие хитозана с формальдегидом и цианидом водорода в интервале температур от 10 до 70oС и при времени реакции от 0,5 до 12 ч, предпочтительно от 2 до 5 ч, в соответствии со следующей схемой реакции:
Figure 00000002

где x равняется 5 - 10000, предпочтительно 20 - 500,
n1 равняется 0 - 0,6, предпочтительно 0,05 - 0,2 части, основываясь на значении x;
n2 равняется 0 - 0,2, предпочтительно 0,05 - 0,1 части, основываясь на значении x;
n3 + n4 равняется 0,4 - 1,0, предпочтительно 0,8 - 0,95, основываясь на значении x.2. The method of producing N-cyanomethylated chitosan according to claim 1, which includes the interaction of chitosan with formaldehyde and hydrogen cyanide in the temperature range from 10 to 70 o C and at a reaction time from 0.5 to 12 hours, preferably from 2 to 5 hours, in accordance with the following reaction scheme:
Figure 00000002

where x is 5 to 10,000, preferably 20 to 500,
n 1 equals 0-0,6, preferably 0.05-0.2 parts, based on the value of x;
n 2 equals 0 - 0,2, preferably 0.05 - 0.1 parts, based on the value of x;
n 3 + n 4 is 0.4 to 1.0, preferably 0.8 to 0.95, based on the value of x. 3. Способ по п. 2, отличающийся тем, что реакция проводится в присутствии муравьиной кислоты. 3. The method according to p. 2, characterized in that the reaction is carried out in the presence of formic acid. 4. Применение N-цианометилированного хитозана по п. 1 в качестве разделяющей мембраны. 4. The use of N-cyanomethylated chitosan according to claim 1 as a separating membrane. 5. Гидролизованный N-цианометилированный хитозан, содержащий звенья формулы (2)
Figure 00000003

где n1 равняется 0 - 0,6, предпочтительно 0,05 - 0,20,
n2 равняется 0,01 - 0,20, предпочтительно 0,05 - 0,10,
n3 + n4 равняется 0,4 - 1,0, предпочтительно 0,8 - 0,95.5. Hydrolyzed N-cyanomethylated chitosan containing units of the formula (2)
Figure 00000003

where n 1 equals 0 - 0.6, preferably 0.05 - 0.20,
n 2 is 0.01-0.20, preferably 0.05-0.10,
n 3 + n 4 is 0.4 to 1.0, preferably 0.8 to 0.95. 6. Способ получения гидролизованного N-цианометилированного хитозана по п. 5, отличающийся тем, что он включает гидролиз N-цианометилированного хитозана формулы (2)
Figure 00000004

где n1 равняется 0,01 - 0,6, предпочтительно 0,05 - 0,20,
n2 равняется 0 - 0,2, предпочтительно 0,05 - 0,1;
n3 + n4 равняется 0,4 - 1,0, предпочтительно 0,8 - 0,95.6. The method of obtaining hydrolyzed N-cyanomethylated chitosan according to claim 5, characterized in that it includes the hydrolysis of the N-cyanomethylated chitosan of formula (2)
Figure 00000004

where n 1 is equal to 0.01 to 0.6, preferably 0.05 to 0.20,
n 2 equals 0 - 0,2, preferably 0.05 - 0.1;
n 3 + n 4 is 0.4 to 1.0, preferably 0.8 to 0.95. 7. Применение гидролизованного N-цианометилированного хитозана по п. 5 в качестве секвестранта ионов щелочно-земельных металлов, комплексообразующего агента ионов металлов или стабилизатора отбеливающих растворов. 7. The use of hydrolyzed N-cyanomethylated chitosan according to claim 5 as a sequestrant of alkaline earth metal ions, a complexing agent of metal ions or a stabilizer of bleaching solutions. 8. Применение гидролизованного N-цианометилированного хитозана по п. 1 для предотвращения адгезии или образования твердых отложений на неорганических или органических субстратах. 8. The use of hydrolyzed N-cyanomethylated chitosan according to claim 1 for preventing adhesion or formation of solid deposits on inorganic or organic substrates. 9. Косметическая композиция, отличающаяся тем, что она включает по меньшей мере один гидролизованный N-цианометилированный хитозан по п. 5 вместе с косметически приемлемыми носителями или адъювантами. 9. Cosmetic composition, characterized in that it includes at least one hydrolyzed N-cyanomethylated chitosan according to claim 5, together with cosmetically acceptable carriers or adjuvants. 10. Применение гидролизованного N-цианометилированного хитозана по п. 5 в качестве влагоудержателя для кожи и слизистых оболочек. 10. The use of hydrolyzed N-cyanomethylated chitosan according to claim 5 as a water retainer for the skin and mucous membranes. 11. Применение гидролизованного N-цианометилированного хитозана по п. 5 в качестве репеллента. 11. The use of hydrolyzed N-cyanomethylated chitosan according to claim 5 as a repellent. 12. Применение гидролизованного хитозана по п. 5 в качестве загустителя. 12. The use of hydrolyzed chitosan according to claim 5 as a thickener.
RU95122598/04A 1994-12-22 1995-12-22 N-cyanomethylated chitosan, products of hydrolysis thereof, method of preparation thereof and use RU2158270C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH389994 1994-12-22
CH3899/94 1994-12-22

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RU95122598A true RU95122598A (en) 1997-11-27
RU2158270C2 RU2158270C2 (en) 2000-10-27

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EP (1) EP0718313B1 (en)
JP (1) JPH08277304A (en)
KR (1) KR100407880B1 (en)
BR (1) BR9505985A (en)
DE (1) DE59508783D1 (en)
ES (1) ES2151950T3 (en)
NO (1) NO955224L (en)
RU (1) RU2158270C2 (en)

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IT1295308B1 (en) * 1997-10-10 1999-05-04 Gentili Ist Spa AMORPHOUS COMPLEXES OF CHITOSANS AND INSOLUBLE SALTS OF EARTH ALKALINE METALS AND THEIR USE AS USEFUL MEDICATIONS IN OSTEOGENESIS
AU1254801A (en) * 1999-09-20 2001-04-24 James Vincent Gruber Amphoteric water-soluble poly(amine) derivatives
GB0024489D0 (en) * 2000-10-06 2000-11-22 Reckitt Benckiser Uk Ltd Improvements in or relating to organic compositions
RU2548003C1 (en) * 2013-12-17 2015-04-10 Константин Сергеевич Назаров Method of producing chitosan derivative, having amphiphilic properties

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