Urea-glyoxal crosslinking compounds for phenolic binder compositions
AssigneeJohns Manville
InventorsKiarash Alavi, Ameya Natu
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Abstract
Binder compositions are described that include a phenol, a urea compound, formaldehyde, and at least one cyclic urea-dialdehyde compound. The cyclic urea-dialdehyde compound forms crosslinking bonds between polymers of phenol-urea-formaldehyde when the binder composition is cured. Also described are methods of making fiberglass insulation products using the above-described binder compositions. The methods may include contacting the binder composition with glass fibers and forming an amalgam of the binder composition and the glass fibers. The amalgam may be heated to form mats of the glass fibers and binder. The mats may be processed into the fiberglass insulation products.
Claims20
A fiberglass insulation product comprising:
- glass fibers formed into a fiberglass mat or batt;
- and
- an aqueous binder comprising phenol-urea-formaldehyde polymers crosslinked with a reaction product of urea and glyoxal, and a polyol comprising a five-carbon or six-carbon sugar alcohol;
- wherein the binder is formed from a binder composition that includes a base catalyst and a latent cure catalyst;
- and
- wherein the glass fibers are 50 wt. % to 99.5 wt. % of the fiberglass insulation product.
A fiberglass insulation product comprising:
- glass fibers formed into a fiberglass mat or batt;
- and
- an aqueous binder comprising phenol-urea-formaldehyde polymers crosslinked with a reaction product of urea and glyoxal, and a polyol,
- wherein the binder is formed from a binder composition that includes a base catalyst and a latent cure catalyst;
- and
- wherein the glass fibers are 50 wt. % to 99.5 wt. % of the fiberglass insulation product, and
- wherein the polyol is present at from 10 wt. % to 30 wt. % of the total solids in the binder composition.
Dependencies are inferred from the claim text.