Carbohydrate polyamine binders and materials made therewith
AssigneesKnauf Insulation, Inc., Knauf Insulation SPRL
InventorsCharles Fitch Appley, Carl Hampson, Gert R. Mueller, Benedicte Pacorel
Life of this patent
Estimating the term…
Abstract
A binder comprising the products of a carbohydrate reactant and polyamine is disclosed. The binder is useful for consolidating loosely assembled matter, such as fibers. Uncured fibrous products comprising fibers in contact with a carbohydrate reactant and a polyamine are also disclosed. The binder composition may be cured to yield a fibrous product comprising fibers bound by a cross-linked polymer. Further disclosed are methods for binding fibers with the carbohydrate reactant and polyamine based binder.
Claims20
A method of making a collection of matter bound with a cured, thermoset, polymeric binder comprising:
- preparing an aqueous binder solution, said preparing comprising mixing reactants for producing the cured, thermoset, polymeric binder, wherein the reactants include a) a reducing sugar reactant comprising at least one of dextrose and fructose and b) 1,6-diaminohexane;
- subsequently disposing the binder solution onto a collection of matter;
- subsequently drying the binder solution to form an uncured binder and thermally curing the uncured binder to form the collection of matter bound with the cured, thermoset, polymeric binder.
A method of making a composite wood board comprising a collection of matter comprising cellulosic fibers bound with a cured, thermoset, polymeric binder comprising:
- preparing an aqueous binder solution, said preparing comprising mixing reactants for producing the cured, thermoset, polymeric binder, wherein the reactants include a) a reducing sugar reactant comprising at least one of dextrose and fructose and b) 1,6-diaminohexane;
- subsequently disposing the binder solution onto a collection of matter comprising cellulosic fibers;
- subsequently drying the binder solution to form an uncured binder and thermally curing the uncured binder to form the composite wood board bound with the cured, thermoset, polymeric binder;
- wherein the composite wood board is selected from the group consisting of:
- a composite wood board having a modulus of elasticity (MOE) of at least 1800 N/mm2;
- a composite wood board having a bending strength (MOR) of at least 18 N/mm2;
- a composite wood board having an internal bond strength (TB) of at least 0.28 N/mm2;
- a composite wood board which swells less than or equal to 12%, as measured by a change in thickness, after 24 hours in water at 20° C.;
- a composite wood board having a water absorption after 24 hours in water at 20° C. of less than or equal to 40%;
- a composite wood board comprising a wax;
- an orientated strandboard;
- and a medium density fiberboard.
Dependencies are inferred from the claim text.