Preparation of an insulating composite
AssigneeCoatex
InventorsLaurie PARRENIN, Jean-Marc SUAU, Morgane LE NEINDRE
Life of this patent
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Abstract
A method for preparing a composite material from mineral fibers, by impregnating and then crosslinking an aqueous composition. The method is particularly effective for obtaining a composite having structuring or insulating properties. The aqueous composition includes a polyfunctional compound combined with an alpha-sulfonated polymer and a sulfo-carboxylic acid.
Claims18
A method for preparing a composite material, the method comprising:
- applying to a material F at least one aqueous composition R comprising:
- at least one α-sulphonated polymer A prepared in water and in the absence of any phosphorus compound, by a polymerisation reaction of at least one monomer M selected from the group consisting of acrylic acid, methacrylic acid, an acrylic acid salt, and a methacrylic acid salt, in the presence of at least one initiator compound and of at least one sulphur compound comprising sulphur in oxidation state IV,
- at least one compound B selected from the group consisting of a sulpho-carboxylic acid and a sulpho-carboxylic acid salt, present in a molar amount greater than 2% based on a total molar amount of sulphur IV, and
- at least one polyfunctional compound C selected from the group consisting of a polyol, a polyamine, an amino alcohol, a (polyamino) alcohol, an amino (polyalcohol), an ose, and an oside, and
- crosslinking the material F impregnated with composition R,
- wherein the material F is at least one selected from the group consisting of a woven heat-resistant substrate and a non-woven heat-resistant substrate.
A cross-linking agent comprising at least one compound C selected from the group consisting of a polyol, a polyamine, an amino alcohol, a (polyamino) alcohol, an amino (polyalcohol), an ose, and an oside, for crosslinking an aqueous composition R comprising:
- at least one α-sulphonated polymer A prepared in water and in the absence of any phosphorus compound, by a polymerisation reaction of at least one monomer M selected from the group consisting of acrylic acid, methacrylic acid, an acrylic acid salt, and a methacrylic acid salt, in the presence of at least one initiator compound and of at least one sulphur compound comprising sulphur in oxidation state IV, and
- at least one compound B selected from the group consisting of a sulpho-carboxylic acid, and a sulpho-carboxylic acid salt thereof, and present in a molar amount of greater than 2% based on a total molar amount of sulphur IV.
A method for improving the cross-linking property of an aqueous composition R, the method comprising:
- adding to the aqueous dispersion of polymer A or to the aqueous composition R at least one compound B selected from the group consisting of a sulpho-carboxylic acid and a sulpho-carboxylic acid salt present in a molar amount greater than 2% based on a total molar amount of sulphur IV, wherein the aqueous composition R comprises
- an aqueous dispersion of an α-sulphonated polymer A prepared in water and in the absence of any phosphorus compound, by a polymerisation reaction of at least one monomer M selected from the group consisting of acrylic acid, methacrylic acid, an acrylic acid salt, and a methacrylic acid salt, in the presence of at least one initiator compound and of at least one sulphur compound comprising sulphur in oxidation state IV, and
- at least one polyfunctional compound C selected from the group consisting of a polyol, a polyamine, an amino alcohol, a (polyamino) alcohol, an amino (polyalcohol), an ose, and an oside.
An agent comprising at least one compound C selected from the group consisting of a polyol, a polyamine, an amino alcohol, a (polyamino) alcohol, an amino (polyalcohol), an ose, and an oside, for improving the cross-linking property of an aqueous composition R comprising:
- an aqueous dispersion of an α-sulphonated polymer A prepared in water and in the absence of any phosphorus compound, by a polymerisation reaction of at least one monomer M selected from the group consisting of acrylic acid, methacrylic acid, an acrylic acid salt, and a methacrylic acid salt, in the presence of at least one initiator compound and of at least one sulphur compound comprising sulphur in oxidation state IV, and
- at least one compound B selected from the group consisting of a sulpho-carboxylic acid and a sulpho-carboxylic acid salt, present in a molar amount greater than 2% based on a total molar amount of sulphur IV.
Dependencies are inferred from the claim text.