Formaldehyde-free protein-containing binders for spunbond products
AssigneeJohns Manville
InventorsMingfu Zhang, Jawed Asrar, Zhihua Guo, Kiarash Alavi
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Abstract
One-part binder compositions are described that may include a protein and a crosslinking combination. The crosslinking combination may include at least a first crosslinking compound and a second crosslinking compound. The first and second crosslinking compounds are individually crosslinkable with each other and with the protein. Examples of the protein include soy protein. Fiber products and methods of making the fiber products are also described. The fiber products may include organic fibers, inorganic fibers, or both, in a cured thermoset binder based on solutions of the one-part binder compositions.
Claims20
A one-part binder composition comprising an aqueous mixture of:
- a protein;
- and
- an aqueous solution comprising a first crosslinking compound and a second crosslinking compound, wherein:
- the first and second crosslinking compounds are individually crosslinkable with each other and with the protein,
- the first crosslinking compound comprises a polycarboxy polymer,
- the second crosslinking compound comprises a crosslinking agent that comprises a hydroxyl group, and
- the aqueous solution does not include an emulsion of the first crosslinking compound or the second crosslinking compound.
A one-part binder composition comprising an aqueous mixture of:
- a protein, and
- an aqueous solution comprising a first crosslinking compound and a second crosslinking compound, wherein:
- the first and second crosslinking compounds are individually crosslinkable with each other and with the protein, and
- the first crosslinking compound comprises a polyhydroxy polymer,
- the second crosslinking compound comprises a crosslinking agent that comprises a carboxyl group, and
- the aqueous solution does not include an emulsion of the first crosslinking compound or the second crosslinking compound.
A spunbond product comprising:
- a cured thermoset binder made from a binder composition comprising an aqueous mixture of:
- a protein;
- and
- an aqueous solution comprising a first crosslinking compound and a second crosslinking compound, wherein:
- the first and second crosslinking compounds are individually crosslinkable with each other and with the protein,
- the aqueous solution does not include an emulsion of the first crosslinking compound or the second crosslinking compound, and either:
- the first crosslinking compound comprises a polycarboxy polymer and the second crosslinking compound comprises a crosslinking agent that comprises a hydroxyl group, or
- the first crosslinking compound comprises a polyhydroxy polymer and the second crosslinking compound comprises a crosslinking agent that comprises a carboxyl group.
Dependencies are inferred from the claim text.