REINFORCING AND/OR PROCESS FIBRES BASED ON VEGETABLE FIBRES, PROCESS FOR PRODUCING THEM AND THEIR USE

Title:

REINFORCING AND/OR PROCESS FIBRES BASED ON VEGETABLE FIBRES, PROCESS FOR PRODUCING THEM AND THEIR USE

Document Type and Number:

WIPO Patent Application WO1990012906

Kind Code:

A3

Abstract:

Reinforcing and/or process fibres (I) based on plant fibres (II) are obtd. by treating delignified (II) with an aq. soln. contg. metal cpd(s). (II) I), i.e. (hydro)oxide(s), carbonate(s), (thio)sulphate(s), sulphite(s), silicate(s) and/or phosphate(s), then washing and treating with an (in)organic binder (IV) or neutralising the unwashed fibres with a mineral acid; or by treating delignified (II) with an oxidant (V); or carbonising untreated (II) at 250-350 deg.C under a controlled air supply. Pref. (II) are flax, jute, unbleached cotton, hemp, cotton or sisal fibres. (III) are alkali(ne earth) (hydr)-oxides, carbonates or (thio)sulphates or basic Fe, Ti, Sb or Al salts; pred. NaOH, KOH, Na2SiO3 or Na2S2O3. (II) are treated with a 1-30, (10-30) (wt.)% aq. (III) soln., pref. at 50-100 deg.C. Delignified (II) pref. are bleached with peroxide, hypochlorite or chlorine water before treatment with the (III) soln. (IV) is cemnt, plaster of Paris, silicates, bitumen, asphalt, natural or synthetic elastomers, polyurethanes, phenolic resins, resols, melamine resins, epoxy resins or mists. of these and is used in an amt. of 5-20% w.r.t. (I). (V) is alkali metal periodate, persulphate or permanganate, esp. KMnO4 and oxidn. is carried out at 75-95 deg.C (II) may also be finished with a flam retardant, lubricant and/or preservative finish. (II) obtd. by pyrolysis are impregnated with a resin, natural or synthetic rubber or elastomer.

Inventors:

SPEHNER JEAN LEON (FR)

Application Number:

PCT/EP1990/000614

Publication Date:

December 13, 1990

Filing Date:

April 17, 1990

Export Citation:

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Assignee:

ECCO GLEITTECHNIK GMBH (DE)

International Classes:

B29C70/10; C04B14/38; C04B18/24; C04B16/02; C04B18/28; C04B20/10; C04B28/02; C08K7/00; C08K7/02; C08L1/00; D01B1/10; D01B1/42; D01C1/00; D01F9/16; D01F11/12; D06M11/00; D06M13/00; D06M101/00; D06M101/02; D06M101/04; D06M101/06; D06M101/08; (IPC1-7): D01C1/00; C04B18/24; D01B1/42

Foreign References:

DE3049997A1	1983-07-21
BE443929A
GB1089777A	1967-11-08
BE360878A
CH461340A	1968-08-15
DE3730687A1	1989-03-23
FR1529863A	1968-06-21
DE875851C	1953-05-07
US3734766A	1973-05-22
BE357488A

Other References: