Fire-resistant polyurethane compound comprising phosphorous-containing oligomer elements of a controlled length
AssigneesUniversite Du Maine, Centre National de la Recherche Scientifique (CNRS)
InventorsJean-François PILARD, Arnaud NOURRY, Krishna Veni BARATHA NESAN
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Abstract
Some embodiments are directed to a fire-resistant polyurethane material including a plurality of polyol reactive elements and a plurality of diisocyanate reactive elements and at least one diamine or diol reactive element operating as a chain extender of the polyurethane. A chain extender of at least the polyurethane material includes a phosphorous-containing oligomer element of a predefined length having a value within a dispersion interval, which is also predefined. Some embodiments also relate to polyurethanes obtained by implementing the method.
Claims20
A fire-resisting polyurethane (PU) material, comprising:
- a plurality of polyol reactive elements (S) obtained using natural rubber or recycled rubber;
- a plurality of diisocyanate reactive elements (H);
- and
- at least one diamine or diol reactive element operating as a chain extender (EXT) of said polyurethane, the at least one chain extender (EXT) of the polyurethane material (PU) including a phosphorous-containing oligomer element (R2) of a predefined length (L), the length (L) having a value within a predefined dispersion interval.
(canceled)
A method for manufacturing a polyurethane material, the method comprising:
- mixing a plurality of polyol reactive elements (S) and a plurality of diisocyanate reactive elements (H), of at least one diamine or diol reactive element operating as a chain extender (EXT) of the polyurethane, and of a catalyst;
- and
- synthesising (S1) the chain extender element (EXT) that includes at the end of said synthesis (S1) a chain (R2) of phosphorous-containing oligomer elements of predefined length (L), the predefined length (L) having a value within a predefined dispersion interval by a dispersion interval of the molar mass of said phosphorous-containing oligomer.
(canceled)
Dependencies are inferred from the claim text.