Insulation products
AssigneeRockwool A/S
InventorsDorte Bartnik Johansson, Miroslav Nikolic
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Abstract
The invention relates to a method of making an insulation product and a novel insulation product, wherein the insulation product is made by adhering a facing to at least one major surface of a batt of man-made vitreous fibres in a matrix comprising a binder by the use of an adhesive and curing the adhesive. The adhesive is an aqueous composition which is free of phenol and formaldehyde and comprises: a component (i) in form of one or more lignosulfonate lignins having a carboxylic acid group content of 0.03 to 2.0 mmol/g, such as 0.03 to 1.4 mmol/g, such as 0.075 to 2.0 mmol/g, such as 0.075 to 1.4 mmol/g, based on the dry weight of the lignosulfonate lignins, a component (ii) in form of one or more cross-linkers.
Claims50
A method of making an insulation product, the method comprising:
- providing a batt of man-made vitreous fibres (MMVF) in a matrix comprising a binder, wherein the batt of man-made vitreous fibres comprises at least one major surface;
- providing a facing;
- fixing the facing to at least one major surface of the batt of man-made vitreous fibres by the use of an adhesive;
- and
- curing the adhesive, wherein the adhesive is an aqueous adhesive composition which is free of phenol and formaldehyde and comprises:
- a component (i) in form of one or more lignosulfonate lignins having a carboxylic acid group content of 0.03 to 2.0 mmol/g, based on the dry weight of the lignosulfonate lignins,
- a component (ii) in form of one or more cross-linkers,
- wherein component (i) has an average carboxylic acid group content of less than 1.8 groups per macromolecule considering the M_n wt. average of component (i).
A method of making an insulation product, the method comprising:
- providing a batt of man-made vitreous fibres (MMVF) in a matrix comprising uncured binder, wherein the batt of man-made vitreous fibres comprises at least one major surface;
- providing a facing;
- applying the facing to at least one major surface of the batt of man-made vitreous fibres;
- and curing the binder so as to fix the facing to the major surface, wherein the binder is an aqueous binder composition which is free of phenol and formaldehyde and comprises:
- a component (i) in form of one or more lignosulfonate lignins having a carboxylic acid group content of 0.03 to 2.0 mmol/g, based on the dry weight of the lignosulfonate lignins,
- a component (ii) in form of one or more cross-linkers,
- wherein component (i) has an average carboxylic acid group content of less than 1.8 groups per macromolecule considering the M_n wt. average of component (i).
An insulation product comprising an insulation element which is a batt of man-made vitreous fibres (MMVF) bonded with a binder, wherein the batt of man-made vitreous fibres comprises at least one major surface, and comprising a facing, wherein the facing is fixed to at least one major surface of the insulation element by an adhesive, wherein the adhesive before curing is an aqueous adhesive composition
- which is free of phenol and formaldehyde and comprises:
- a component (i) in form of one or more lignosulfonate lignins having a carboxylic acid group content of 0.03 to 2.0 mmol/g, based on the dry weight of the lignosulfonate lignins,
- a component (ii) in form of one or more cross-linkers,
- wherein component (i) has an average carboxylic acid group content of less than 1.8 groups per macromolecule considering the M_n wt. average of component (i).
Dependencies are inferred from the claim text.