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2 158 193

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IPC

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Application

99126274/04, 1999-12-14

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Start date

1999-12-14

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Actual filing date

1999-12-14

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Published

2000-10-27

(72)

Inventor

Sangalov Ju.A.Il'Jasova A.I.Krasulina N.A.Antonova N.E.Latypov F.Sh.

(73)

Holder

Institut Neftekhimii I Kataliza An Rb I Unts Ran

WOOD POWDER HYDROPHOBIZATION METHOD Russian patent published in 2000 - IPC

Abstract RU 2158193 C1

FIELD: wood processing. SUBSTANCE: hydrophobization of wood powders intended for use as polymer materials' fillers consists in thermochemical treatment of those powders. Method is distinguished by impregnating dry powders, for 17 h at normal temperature, with 1-10% chloroform of hexane solution of pine pitch consisting of diterpenic resin acids having common formula C19H29COOH (75-76%), turpentine or monoterpenic hydrocarbons with common formula C10H16 (16-18%) and water (up to 6%), after which solvent is removed at 60 C and powders are then maintained at 150-180 C for 6 h. Hydrophobized powders conserve positive properties of original powders (dispersity, moderate density) and are characterized by high resistance to absorption of water at low content of hydrophobizing agent. EFFECT: increased waterproofness. 1 tbl

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RU 2 158 193 C1

Authors

Sangalov Ju.A.

Il'Jasova A.I.

Krasulina N.A.

Antonova N.E.

Latypov F.Sh.

Dates

2000-10-27—Published

1999-12-14—Filed

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