Ceramifying composition for fire protection
AssigneeOlex Australia Pty Ltd
InventorsGraeme Alexander, Yi-Bing Cheng, Robert Paul Burford, Robert Shanks, Jaleh Mansouri, Kenneth Willis Barber, Pulahinge Don Dayananda Rodrigo, Christopher Preston
Life of this patent
Estimating the term…
Abstract
The invention relates to a ceramifying composition for forming a fire resistant ceramic under fire conditions the composition comprising: (i) at least 10% by weight of mineral silicate; (ii) from 8% to 40% by weight of at least one inorganic phosphate that forms a liquid phase at a temperature of no more than 800° C.; and (iii) at least 15% by weight based on the total weight of the composition of a polymer base composition comprising at least 50% by weight of an organic polymer.
Claims36
A ceramifying composition forming a fire resistant ceramic under fire conditions, the composition comprising:
- (i) at least 10% by weight based on the total weight of the composition of silicate mineral filler;
- (ii) from 8% to 40% by weight based on the total weight of the composition of at least one inorganic phosphate that forms a liquid phase at a temperature of no more than 800° C. selected from ammonium phosphate, ammonium polyphosphate and ammonium pyrophosphate;
- (iii) at least 15% by weight based on the total weight of the composition of a polymer base composition comprising at least 50% by weight of an organic polymer;
- wherein the composition comprises less than 1% by weight of melamine and pentaerythritol, based on the total weight of the composition;
- and wherein said composition forms a self-supporting ceramic residue on exposure to an elevated temperature of 1000° C. for 30 minutes, which the residue comprises at least 40% by weight of the composition before pyrolysing.
A ceramifying composition forming a fire resistant ceramic under fire conditions, the composition consisting essentially of:
- (i) at least 15% by weight, based on the total weight of the composition, of a polymer base composition comprising at least 50% by weight of an organic polymer;
- (ii) 8-40% by weight based on the total weight of the composition of at least one inorganic phosphate that forms a liquid phase at a temperature of no more than 800° C., based on the total weight of the composition;
- (iii) at least 10% by weight, based on the total weight of the composition, of silicate mineral filler;
- and
- (iv) optionally additional inorganic filler in an amount of up to 30% by weight based on the total weight of the composition;
- wherein the composition forms a self-supporting ceramic residue on exposure to an elevated temperature of 1000° C. for 30 minutes, which the residue comprises at least 40% by weight of the composition before pyrolysing.
Dependencies are inferred from the claim text.