Back to results
US 5,573,055 AGranted
Water dispersible moulds
AssigneeBorden (UK) Limited
InventorsRichard Melling, Nigel Challand
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeBorden (UK) Limited
InventorsRichard Melling, Nigel Challand
Estimating the term…
A water dispersible mould for making a casting, the mould comprising a water-insoluble particulate material-and a binder therefor, the binder including polyphosphate chains and/or borate ions. The invention also provides a process for making a water dispersible mould for making a casting, the process including the steps of: (a) providing a water-insoluble particulate material; (b) combining the particulate material with a binder including polyphosphate chains and/or borate ions, the chains and/or ions being dissolved in water; (c) forming, either during or after step (b), the particulate material and binder mixture into a desired shape; and (d) removing free water from the mixture. The polyphosphate chains may be derived from a water soluble phosphate glass and the borate ions may be derived from a soluble borate glass.
A water-dispersible mould for making a casting, the mould comprising a water-insoluble particulate material and a binder therefor, wherein the binder contains at least one matrix former selected from the group consisting of polyphosphate chains derived from water-soluble phosphate glass and borate ions.
A process for making a water dispersible mould for making a casting, the process including the steps of:
A process for making a water dispersible mould for making a casting, the process including the steps of:
Dependencies are inferred from the claim text.