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Machine translation
1. (WO1980000142) A METHOD OF MANUFACTURING BONDED PRODUCTS OF CELLULOSE OR CELLULOSE DERIVATIVES
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/000142    International Application No.:    PCT/SE1978/000014
Publication Date: 07.02.1980 International Filing Date: 06.07.1978
IPC:
B27N 1/00 (2006.01), C08L 97/02 (2006.01)
Applicants:
Inventors:
Priority Data:
SE78/00014 06.07.1978 WO
Title (EN) A METHOD OF MANUFACTURING BONDED PRODUCTS OF CELLULOSE OR CELLULOSE DERIVATIVES
(FR) METHODE DE FABRICATION DE PRODUITS AGGLOMERES DE CELLULOSE OU DE DERIVES CELLULOSIQUES
Abstract: front page image
(EN)In a method of manufacturing bonded products, comprised completely or partially of cellulose or a cellulose derivative, such as saw dust, wood chips, paper or vegetable fibres, a condensation resin between an aldehyde, preferably form aldehyde, and urea, melamine or aphenol type is used as an adhesive. The product is irradiated to at most 5 M rad with ionising radiation. Then the material will undergo a certain cross-linking. Residual quantities of uncured adhesive substances are reduced at the same time. The radiation dose is adjusted so that residual quantities of aldehyde in the material will be reduced. Preferably, also the residual quantity of formaldehyde in the material is reduced. By adding additives containing olefinic, acrylic or comparable groups the extent to which cross-linking takes place is increased.
(FR)Dans une methode de fabrication de produits agglomeres composes completement ou partiellement de cellulose ou d"un derive cellulosique, tel que la sciure, les copeaux de bois, le papier ou les fibres vegetales, on utilise une resine de condensation d"un aldehyde, de preference un formaldehyde, et de l"uree, du type melamine ou aphenol comme moyen d"addition. Le produit est irradie a au plus 5 M rad avec une radiation ionisante. Le materiau subit ensuite une certaine reticulation. Les quantites residuelles de substances adhesives non-traitees sont reduites en meme temps. La dose de radiation est reglee de maniere que les quantites residuelles d"aldehyde dans les materiaux soient reduites. De preference, la quantite residuelle de formaldehyde dans le materiau est egalement reduite. En ajoutant des additifs contenant des groupes olefinique, acrylique ou autres groupes semblables, on augmente le taux de la reticulation.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)