WOOD BLEACHING PROCESS Russian patent published in 2000 - IPC

Abstract RU 2156691 C1

FIELD: woodworking. SUBSTANCE: wood colored by fungal pigments or darkened from atmospheric or solar effects is bleached in two steps. Wood is first treated with aqueous solution containing 25-55% sodium hypochlorite, 1-5% sodium or potassium hydroxide, and water. In the second step, treatment is carried out with 15- 50% aqueous solution of hydrogen peroxide. EFFECT: achieved complete restoration of damaged wood surface regions. 3 cl, 5 ex

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RU 2 156 691 C1

Authors

Deniskin V.V.

Maksimov S.I.

Maslov V.A.

Rakhmanov A.A.

Khofbauehr Eh.I.

Dates

2000-09-27—Published

1999-02-05—Filed