RU2017128618A - The method of obtaining chemically pure high viscosity cellulose from flax fiber, intended for use in the production of cellulose nitrates - Google Patents

The method of obtaining chemically pure high viscosity cellulose from flax fiber, intended for use in the production of cellulose nitrates Download PDF

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RU2017128618A
RU2017128618A RU2017128618A RU2017128618A RU2017128618A RU 2017128618 A RU2017128618 A RU 2017128618A RU 2017128618 A RU2017128618 A RU 2017128618A RU 2017128618 A RU2017128618 A RU 2017128618A RU 2017128618 A RU2017128618 A RU 2017128618A
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Russia
Prior art keywords
cellulose
flax fiber
chemically pure
intended
production
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RU2017128618A
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Russian (ru)
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RU2017128618A3 (en
Inventor
Юрий Михайлович Михайлов
Роза Фатыховна Гатина
Кафия Анваровна Матыгуллина
Елена Владимировна Шахмина
Original Assignee
Федеральное казенное предприятие "Государственный научно-исследовательский институт химических продуктов" (ФКП "ГосНИИХП")
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Priority to RU2017128618A priority Critical patent/RU2017128618A/en
Publication of RU2017128618A publication Critical patent/RU2017128618A/en
Publication of RU2017128618A3 publication Critical patent/RU2017128618A3/ru

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Способ получения химически чистой целлюлозы, включающий варки в щелочном растворе, с последующей промывкой, отбелкой в растворе перекиси водорода, отличающийся тем, что варки механически очищенного котонизированного льноволокна в водном растворе гидроксида натрия ведут при рН не ниже 11,5, температуре 100°C и давлении, не превышающем 0,2 МПа в течение 30-120 мин, при следующем соотношении, г/л: гидроокись натрия 1,5-4,2, ПАВ 3,7, комплексон (Трилон Б) 2,6-15,0, сульфат магния 0,26-1,6, силикат натрия 3,6-11, перекись водорода 26-46.A method of producing chemically pure cellulose, including cooking in an alkaline solution, followed by washing, bleaching in a hydrogen peroxide solution, characterized in that the cooking of mechanically cleaned cotonized flax fiber in an aqueous solution of sodium hydroxide is carried out at a pH of at least 11.5, a temperature of 100 ° C, and pressure not exceeding 0.2 MPa for 30-120 min, with the following ratio, g / l: sodium hydroxide 1.5-4.2, surfactant 3.7, complexon (Trilon B) 2.6-15.0 , magnesium sulfate 0.26-1.6, sodium silicate 3.6-11, hydrogen peroxide 26-46.
RU2017128618A 2017-08-10 2017-08-10 The method of obtaining chemically pure high viscosity cellulose from flax fiber, intended for use in the production of cellulose nitrates RU2017128618A (en)

Priority Applications (1)

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RU2017128618A RU2017128618A (en) 2017-08-10 2017-08-10 The method of obtaining chemically pure high viscosity cellulose from flax fiber, intended for use in the production of cellulose nitrates

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RU2017128618A RU2017128618A (en) 2017-08-10 2017-08-10 The method of obtaining chemically pure high viscosity cellulose from flax fiber, intended for use in the production of cellulose nitrates

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RU2017128618A true RU2017128618A (en) 2019-02-11
RU2017128618A3 RU2017128618A3 (en) 2019-10-03

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Effective date: 20200127