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US 5,338,357 AGranted
Fibre reinforced shaped solid articles
AssigneePolyfibre S.A.
InventorsYosuke Takai, Josef Studinka, Benoit de Lhoneux
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AssigneePolyfibre S.A.
InventorsYosuke Takai, Josef Studinka, Benoit de Lhoneux
Estimating the term…
The invention relates to shaped solid articles manufactured with a hydraulically setting composition comprising water, hydraulic binders and reinforcing fibres and moreover process fibres in an amount of 0-10 wt % with respect to total dry mix and fillers in an amount of 0-50 wt % with respect to total dry mix wherein the reinforcing fibres comprise from 0.1 to 5 wt % with respect to total dry mix of highly crystalline polypropylene fibres possessing a fibre breakage strength of over 490 N/mm.sup.2, having Q<5 and 97<HI<100, and 94<IPF<100, Q being the ratio of weight-average molecular weight to number-average molecular weight, HI being the boiling n-heptane insoluble content in wt % with respect to the total polymer and IPF being the isotactic pentad fraction in mol %.
Shaped solid article manufactured with a hydraulically setting composition comprising water, hydraulic binders, reinforcing fibres and fillers ranging from a finite amount up to 50 wt % with respect to the total dry mix, characterized in that the reinforcing fibres comprise from 0.1-5 wt % with respect to the total dry mix of highly crystalline polypropylene fibres processing a fibre breakage strength of over 490 N/mm.sup.2, having Q<5 and 97<HI<100, and 94<IPF<100, Q being the ratio of weight-average molecular weight to number-average molecular weight, HI being the boiling n-heptane insoluble content in wt % with respect to the total polymer and IPF being the isotactic pentad fraction in mol %.
Dependencies are inferred from the claim text.