IP Library › Granted Patent US 12,351,738
Granted Patent B2
US 12,351,738 · App. 17/498,146 · Granted Jul 8, 2025

Binder compositions and uses thereof

Inventors: Carl Hampson (Liverpool, GB); Ferdous Khan (St. Helens, GB)
Assignees: Knauf Insulation, Inc.; Knauf Insulation SPRL
C09J101/286B27K3/02B27N3/002C08L3/02C09J101/26C09J103/02C09J105/08C09J131/04C09J179/02
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Quick Facts
Patent No.
US 12,351,738
App. No.
17/498,146
Granted
Jul 8, 2025
Kind
B2
Abstract

The present invention relates to new aqueous binder compositions comprising an aqueous curable binder composition comprising starting materials required for forming a thermoset resin upon curing and a matrix polymer, wherein the starting materials required for forming a thermoset resin upon curing comprise (i) a polyhydroxy component and a polycarboxylic acid component, or an anhydride, ester or salt derivative thereof and/or reaction product thereof, or (ii) a carbohydrate component and a nitrogen containing component and/or a reaction product thereof.

Claims (19)

1. An aqueous curable binder composition consisting of water, starting materials required for forming a thermoset resin upon curing and a matrix polymer, optionally one or more dyes, antifungal agents, antibacterial agents, hydrophobes, and silicone-containing coupling agents, and optionally a component selected from microparticles, nano-particles, or combinations thereof derived from one or more of MgO, CaO, Al 2 O 3 , CaCO 4 , nanoclays, montmorillonite, bentonite, kaolinite, hectorite, and halloysite, wherein the starting materials required for forming a thermoset resin upon curing consist of a carbohydrate component selected from the group consisting of reducing sugars and a carbohydrate component capable of producing one or more reducing sugars in situ under thermal curing conditions, and a nitrogen-containing component and/or a reaction product thereof, and wherein the matrix polymer comprises 5-15% of the dry weight of the binder composition, and is selected from the group consisting of carboxymethyl cellulose (CMC), sodium carboxymethyl cellulose (NaCMC), hydroxypropyl cellulose (HPC), 2-hydroxyethyl cellulose (HEC), chitosan, polyurethanes, aliphatic isocyanate oligomers, azetidinium polymer, copolymers thereof and mixtures thereof.

2. The aqueous curable binder composition of claim 1 , wherein the nitrogen-containing component is an ammonium salt of an inorganic acid selected from the group consisting of phosphoric acid, sulphuric acid, nitric acid, carbonic acid and combinations thereof.

3. The aqueous curable binder composition of claim 1 , wherein the nitrogen-containing component is selected from the group consisting of polyamine functional compounds comprising one or more of a primary, secondary, tertiary and quaternary amine functional group.

4. The aqueous curable binder composition of claim 3 , wherein the polyamine functional compound has the general formula of H 2 N-Q-NH 2 , wherein Q is an alkylene, cycloalkylene, heteroalkylene, or cycloheteroalkylene, each of which is optionally substituted.

5. The aqueous curable binder composition of claim 3 , wherein the polyamine functional compound is selected from one or more of a diamine, triamine, tetramine, pentamine, 1,6-diaminohexane, 1,5-diamino-2-methylpentane, diethylenetriamine, 1-piperazine-ethaneamine, bis(hexamethylene)triamine, triethylenetetramine, tetraethylenepentamine, polyethyleneimine (PEI), polyvinyl amine, polyether amine, and polylysine.

6. The aqueous curable binder composition of claim 1 , wherein the matrix polymer has a molecular weight ranging from about 500 Daltons (Da) to about 2×10 6 Da.

7. The aqueous curable binder composition of claim 1 , wherein the nitrogen-containing component is an ammonium salt of an inorganic acid or is selected from the group consisting of polyamine functional compounds comprising one or more of a primary, secondary, tertiary and quaternary amine functional group, and wherein the dry weight ratio of carbohydrate to ammonium salt of inorganic acid or polyamine functional compound ranges from about 2 to about 35.

8. The aqueous curable binder composition of claim 1 , wherein the curable binder composition consists of water, the starting materials required for forming a thermoset resin upon curing, the matrix polymer, and one or more dyes, antifungal agents, antibacterial agents, hydrophobes, and silicone-containing coupling agents.

9. The aqueous curable binder composition of claim 1 , wherein the curable binder composition consists of water, the starting materials required for forming a thermoset resin upon curing, the matrix polymer, and a component selected from microparticles, nano-particles, or combinations thereof derived from one or more of MgO, CaO, Al 2 O 3 , CaCO 4 , nanoclays, montmorillonite, bentonite, kaolinite, hectorite, and halloysite.

10. An assembly of fibers or particles bonded with an aqueous curable binder composition according to claim 1 or with a binder resulting from curing of the curable binder composition of claim 1 .

11. The assembly of fibers according to claim 10 being an insulation product that is a mineral wool mat.

12. The assembly of particles according to claim 10 being a composite wood board selected from a wood fiber board, wood particle board, and plywood.

13. A process for the manufacturing of an assembly of fibers or particles according to claim 10 , said process comprising: successive or concomitant application of the components of the aqueous curable binder composition of claim 1 , or application of an aqueous binder composition according to claim 1 , onto a collection of fibers or particles to afford coated fibers or coated particles; gathering the coated fibers or coated particles into an assembly;

and curing the assembly, whereby water is evaporated and the components of the aqueous curable binder composition are caused to react to form a macromolecular binder.

14. The process according to claim 13 characterized in that curing is performed at a temperature ranging from about 90° C. to about 200° C.

15. The process according to claim 13 characterized in that the aqueous binder composition is applied by spraying onto the collection of fibers or particles.

16. The process of claim 13 , wherein the assembly is a wood fiber board or wood particle board subjected to pressing during curing.

17. The aqueous curable binder composition of claim 8 , wherein the one or more dyes, antifungal agents, antibacterial agents, hydrophobes and silicone-containing coupling agents are present at a concentration from about 0.1 to about 1% by weight based on the weight of solids in the binder composition.

18. The assembly of fibers or particles of claim 10 , wherein the assembly comprises one or more of coal, sand, cellulosic fibers, wood shavings, saw dust, wood pulp, ground wood, wood chips, wood strands, wood layers, natural fibers, jute, flax, hemp, straw, wood veneers, facings, woven and non-woven materials.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 24, 2025
From: HAMPSON, CARL; KHAN, FERDOUS
To: KNAUF INSULATION SPRL; KNAUF INSULATION, INC.
Reel/Frame 070940/0474 →
Priority Claims (1)
GB 1412709 · Jul 17, 2014 · national
Continuity (9)
Continuation 17386445 · Jul 27, 2021
Continuation 17323991 · May 18, 2021
Continuation 17194269 · Mar 7, 2021
Continuation 17129787 · Dec 21, 2020
Continuation 17063630 · Oct 5, 2020
Continuation 16941474 · Jul 28, 2020
Continuation 15931565 · May 13, 2020
Continuation 15326532
Related Publication 20220098452A1 · Mar 31, 2022
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