SU374170A1 - METHOD OF OBTAINING MODIFIED WOOD - Google Patents
METHOD OF OBTAINING MODIFIED WOODInfo
- 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
Links
Landscapes
- Chemical And Physical Treatments For Wood And The Like (AREA)
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
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 |
Family
ID=20471135
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)
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 |
-
1971
- 1971-03-26 SU SU1642137A patent/SU374170A1/en active
Cited By (2)
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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