Non-corroding fiber-reinforced polymer compositions
AssigneeSAPPI Netherlands Services B.V.
InventorsMichaël ALEXANDRE, Ana Luisa MATOS VAZ, Tina CELA
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Abstract
The invention relates to an injection-molding composition comprising at least one polyolefin, at least one delignified wood pulp fiber, at least one maleic anhydride-grafted polyolefin and at least one metal oxide chosen from oxides of alkaline earth metals or of zinc.
Claims16
An injection-molding composition comprising at least one polyolefin, at least one delignified wood pulp fiber, at least one maleic anhydride-grafted polyolefin and at least one metal oxide chosen from oxides of alkaline earth metals or of zinc.
(canceled)
A process for the production of a molded object by injection-molding, comprising the steps of:
- a. forming a precursor agglomerate of at least one thermoplastic polymer, at least one delignified wood pulp fiber, at least one maleic anhydride-grafted polyolefin and at least one metal oxide chosen from oxides of alkali metals or of alkaline earth metals,
- b. processing the precursor agglomerate into a melt and optionally to increase the dispersion of the delignified wood pulp fiber,
- c. introducing, the molten composition into a mold made of steel, and
- allowing the melt of the composition to cool and solidify in the mold made of steel, wherein the steel from which the steel mold is made comprises less than 11% of chrome.
Dependencies are inferred from the claim text.