METHOD OF RENDERING WOODEN MATERIAL FLAME-RETARDANT AND PROCESS FOR PRODUCING FLAME-RETARDED PLYWOOD THEREWITH

Title:

METHOD OF RENDERING WOODEN MATERIAL FLAME-RETARDANT AND PROCESS FOR PRODUCING FLAME-RETARDED PLYWOOD THEREWITH

Document Type and Number:

WIPO Patent Application WO/1996/033848

Kind Code:

A1

Abstract:

A method of rendering wooden material flame-retardant so as to achieve flame-retardant levels as stipulated by the authorities concerned economically in a simple and easy way, which comprises mixing a flame retardant in a concentration of about 30-50 % with an aqueous solution of ethers and alcohols, directly spraying wooden material with the resultant mixture under ordinary conditions while controlling the liquid temperature to be kept above 60 �C, thus effecting impregnation in such a manner that the impregnated wooden material will achieve a weight gain of about 20-30 % in the subsequent drying step.

Inventors:

KIMURA MITHUO (JP)

Application Number:

PCT/JP1996/001189

Publication Date:

October 31, 1996

Filing Date:

April 30, 1996

Export Citation:

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Assignee:

TOUHOKU SENSYOKU CORP (JP)
KIMURA MITHUO (JP)

International Classes:

B27K3/02; B27K3/18; B27K3/20; B27K3/32; B27K3/52; (IPC1-7): B27K3/52

Foreign References:

JPH04173102A	1992-06-19
JPS62231074A	1987-10-09
JPS6220584A	1987-01-29
JPS5351699A	1978-05-11
JPS4949498A	1974-05-14

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