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Machine translation
1. (WO1981003290) THERMALLY CURABLE WET-IMPREGNATED ROVINGS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/003290    International Application No.:    PCT/US1981/000487
Publication Date: 26.11.1981 International Filing Date: 15.04.1981
IPC:
C08G 59/18 (2006.01), C08J 5/24 (2006.01)
Applicants:
Inventors:
Priority Data:
152571 22.05.1980 US
Title (EN) THERMALLY CURABLE WET-IMPREGNATED ROVINGS
(FR) ROVINGS IMPREGNES PAR MOUILLAGE POLYMERISABLES THERMIQUEMENT
Abstract: front page image
(EN)Thermally curable wet-impregnated rovings in which the fibers of the roving are impregnated with a liquid polyepoxide having dispersed therein a latent heat-activatable epoxy curing catalyst, such as dicyandiamide, the polyepoxide dispersion having a room temperature vicosity of from 2000 to 5000 centipoises and a tack of less than about 6 on a Thwing-Albert inkometer. The rovings are produced without organic solvent by passing a dry multifilament roving through an elevated temperature bath of the polyepoxide dispersion, this elevated temperature being insufficient to activate the curing catalyst and functioning to lower the viscosity to enable uniform impregnation. The wet rovings are stored in a supply package.
(FR)Dans des rovings impregnes par voie humide, polymerisable thermiquement, les fibres sont impregnees avec un polyepoxyde liquide contenant un catalyseur de polymerisation epoxy latent activable a la chaleur, en dispersion, tel que le dicyanedianide, la dispersion de polyepoxyde ayant une viscosite a temperature ambiante comprise entre 2000 et 100000 centipoises et un pouvoir adhesif inferieur a 6 environ sur un encremetre de Thwing-Albert. Les rovings sont produits sans solvant organique en faisant passer un roving sec a multi-filaments dans un bain a temperature elevee d'une dispersion de polyepoxyde, cette temperature elevee etant insuffisante pour activer le catalyseur de polymerisation et en abaissant la viscosite pour obtenir une impregnation uniforme. Les rovings humides sont stockes dans un emballage d'approvisionnement.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)