Formaldehyde-free binder compositions and methods of making the binders under controlled acidic conditions
AssigneeJohns Manville
InventorsKiarash Alavi, Uranchimeg Lester, Jawed Asrar
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Abstract
Formaldehyde-free binder compositions are described that include an aldehyde or ketone, a reaction product between a polyamine and an organic anhydride, and an acidic compound. The acidic compound may be an organic acid, an acidic catalyst, or both. The acidic compound is supplied in quantities that lower the pH of the binder composition to about 5 or less. The binder compositions may be used in methods of binding fiberglass and the resulting fiberglass products have an improved tensile strength due to the addition of the acidic compound.
Claims20
A fiber-containing product comprising:
- glass fibers;
- and
- a cured binder formed from a binder composition comprising:
- an aldehyde or ketone,
- an amino-amide compound;
- a polycarboxylic acid;
- and
- one or more catalysts selected from the group consisting of sulfuric acid, a sulfuric acid salt, phosphoric acid, a phosphoric acid salt, nitric acid, and a nitric acid salt.
A fiber-containing product comprising:
- glass fibers;
- and
- a cured binder formed from a binder composition comprising:
- an aldehyde or ketone,
- a reaction product of an amine compound and a carboxyl compound;
- and
- a catalyst comprising a salt of an inorganic acid.
A method of making a fiber-containing product, the method comprising:
- combining a binder composition with glass fibers, wherein the binder composition comprises:
- an aldehyde or ketone,
- a reaction product of an amine compound and a carboxyl compound;
- and
- a catalyst comprising a salt of an inorganic acid;
- forming the combination of the binder composition and the glass fibers into a fiberglass mat or batt;
- heating the fiberglass mat or batt to make the fiber-containing product.
Dependencies are inferred from the claim text.