SU374170A1 - METHOD OF OBTAINING MODIFIED WOOD - Google Patents

METHOD OF OBTAINING MODIFIED WOOD

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Publication number
SU374170A1
SU374170A1 SU1642137A SU1642137A SU374170A1 SU 374170 A1 SU374170 A1 SU 374170A1 SU 1642137 A SU1642137 A SU 1642137A SU 1642137 A SU1642137 A SU 1642137A SU 374170 A1 SU374170 A1 SU 374170A1
Authority
SU
USSR - Soviet Union
Prior art keywords
ketene
modified wood
obtaining modified
wood
acetylation
Prior art date
Application number
SU1642137A
Other languages
Russian (ru)
Inventor
изобретени Авторы
Original Assignee
К. П. Швалбе, И. М. Карлсон, И. О. Озолин , С. Ф. Штерне Латвийска сельскохоз йственна академи
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 К. П. Швалбе, И. М. Карлсон, И. О. Озолин , С. Ф. Штерне Латвийска сельскохоз йственна академи filed Critical К. П. Швалбе, И. М. Карлсон, И. О. Озолин , С. Ф. Штерне Латвийска сельскохоз йственна академи
Priority to SU1642137A priority Critical patent/SU374170A1/en
Application granted granted Critical
Publication of SU374170A1 publication Critical patent/SU374170A1/en

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Description

II

Изобретение относитс  к хими чеокой обработке ,дре1веси1ны.This invention relates to chemical processing, wood.

Известны способы .получени  модифицироBaiHHoft дравесины путем ее вакуумвровани  с последующим ацетилированием кетеном.Methods are known for obtaining modified BaiHHoft wood by vacuuming it, followed by acetylation with ketene.

Цель изобретени  - повысить влагостойкость древесины.The purpose of the invention is to increase the moisture resistance of wood.

Достигаетс  это тем, вакуумирование производ т в течение 1-3 час с последуюЩИ|М ацетилированием газообразнььм кетеном при С в течение час.This is achieved by evacuating for 1-3 hours followed by acetylation with gaseous ketene at C for one hour.

Образцы древесины взвеш.ивают с точностью до + 0,001 г, помещают в реакциойную ка1меру, которую подключают к вакуумному насосу и вакуумируют в течение 1-3 час, за 30 мин до окончаеи  процесса ва1куумир01вапи  регулируют температуру так, чтобы в реакционной камере и трубе пропускани  кетена посто нно сохран лась температура 15- 100° С, после вакуумИровани  подключают Wood samples are weighed to the accuracy of + 0.001 g, placed in a reaction chamber, which is connected to a vacuum pump and evacuated for 1-3 hours, 30 minutes before the end of the vacuum process, the temperature is adjusted so that the reaction chamber and ketene flow pipe The temperature of 15-100 ° C was constantly maintained; after vacuuming, they connected

установку, вырабатывающую кетен, и пускают кетен в реакционную . Через 30 мин lHeпpopeaJГиpoвaвщий кетен выпускают в приемиик. Спуст  1 -10 час прекращают подачу кетена, отключают обогреватели и вынимают обработаиные образцы из реакционной камеры, эзвещввают и определ ют увеличение веса образцов в результате ацетилировани .installation, producing ketene, and let ketene in the reaction. After 30 minutes, HepopereJpeser ketene is released at the reception. After 1 to 10 hours, the ketene delivery is stopped, the heaters are turned off and the processing samples are removed from the reaction chamber, the weight of the samples is determined and the resulting increase in acetylation is determined.

Предмет -изобретени Subject matter

Слособ получени  модифицированной древесины путем ее ва «уумировани  с последующим ацетилированием кетеном, отличающийс  тем, что, с целью повышени  ее влагостойкости , вакуумировайие прюизвод т в течение 1-3 час, с последующим ацетилированием газообразным кетеном при 15-100° С в течение 1-10 час.A method for producing modified wood by combining it with subsequent acetylation with ketene, characterized in that, in order to increase its moisture resistance, vacuum production is carried out for 1-3 hours, followed by acetylation with ketene gas at 15-100 ° C for 1- 10 hours

SU1642137A 1971-03-26 1971-03-26 METHOD OF OBTAINING MODIFIED WOOD SU374170A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1642137A SU374170A1 (en) 1971-03-26 1971-03-26 METHOD OF OBTAINING MODIFIED WOOD

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1642137A SU374170A1 (en) 1971-03-26 1971-03-26 METHOD OF OBTAINING MODIFIED WOOD

Publications (1)

Publication Number Publication Date
SU374170A1 true SU374170A1 (en) 1973-03-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU1642137A SU374170A1 (en) 1971-03-26 1971-03-26 METHOD OF OBTAINING MODIFIED WOOD

Country Status (1)

Country Link
SU (1) SU374170A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2287203A1 (en) * 2009-07-10 2011-02-23 Wacker Chemie AG Process for the acetylation of lignocelluloses, hemicelluloses, celluloses with ketene
RU2716776C2 (en) * 2013-02-26 2020-03-16 Трикойя Текнолоджиз Лимитед Method for forming wood fibre

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2287203A1 (en) * 2009-07-10 2011-02-23 Wacker Chemie AG Process for the acetylation of lignocelluloses, hemicelluloses, celluloses with ketene
RU2716776C2 (en) * 2013-02-26 2020-03-16 Трикойя Текнолоджиз Лимитед Method for forming wood fibre

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