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2 476 311

(13)

(51)

IPC

B27K3/50(2006-01-01)

B27K3/02(2006-01-01)

B27K3/34(2006-01-01)

B82Y99/00(2011-01-01)

(21) (22)

Application

2011138351/13, 2011-09-19

(24)

Start date

2011-09-19

(22)

Actual filing date

2011-09-19

(45)

Published

2013-02-27

(72)

Inventor

Shamaev Vladimir AleksandrovichNikulina Nadezhda SergeevnaMedvedev Il'Ja NikolaevichGubanova Natal'Ja VladislavovnaVoskobojnikov Igor' Vasil'EvichKonstantinova Svetlana Alekseevna

(73)

Holder

Federal'Noe Gosudarstvennoe Bjudzhetnoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Gosudarstvennaja Lesotekhnicheskaja Akademija"

METHOD OF TIMBER MODIFICATION Russian patent published in 2013 - IPC B27K3/50 B27K3/02 B27K3/34 B82Y99/00

Abstract RU 2476311 C1

FIELD: process engineering.

SUBSTANCE: invention relates to timber modification, particularly, to production of modified timber. In compliance with proposed method, blanks are impregnated with 30-40%-water solution of carbamide including prepolymer of urea-formaldehyde oligomer (UFO), dried compacted and heat treated. Note here that reinforcer, that is, 25%-water solution of fibrillar nanocellulose is added to impregnation solution in amount of 15-18% of UFO weight. Water used for said solution is activated by magnetisation to anolyte with redox potential of 800-900 mV and pH=2.5.

EFFECT: higher yield, stiffness and strength.

2 tbl, 2 ex

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RU 2 476 311 C1

Authors

Shamaev Vladimir Aleksandrovich

Nikulina Nadezhda Sergeevna

Medvedev Il'Ja Nikolaevich

Gubanova Natal'Ja Vladislavovna

Voskobojnikov Igor' Vasil'Evich

Konstantinova Svetlana Alekseevna

Dates

2013-02-27—Published

2011-09-19—Filed