B-stageable aqueous binder compositions
AssigneeOwens Corning Intellectual Capital, LLC
InventorsGert Mueller, Andrew Broderick, Xiujuan Zhang, Liang Chen
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Abstract
An aqueous binder composition is disclosed that includes 5.0% by weight to 50.0% by weight of a monomeric polyol having at least four hydroxyl groups, based on the total solids content of the aqueous binder composition; and at least 50.0% by weight of a cross-linking agent comprising a polymeric polycarboxylic acid having at least two carboxylic acid groups, based on the total solids content of the aqueous binder composition. The aqueous binder composition includes a ratio of molar equivalents of carboxylic acid groups to hydroxyl groups is between 0.15/1.0 and 2.23/1 and has a pH of 2.2 to 4.0 and a viscosity at 40% solids and 25° C. of 10 cP to 60 cP.
Claims19
A fibrous product comprising:
- a plurality of randomly oriented fibers;
- and
- a binder composition comprising:
- a sugar alcohol, wherein the sugar alcohol has at least four hydroxyl groups;
- and
- a polymeric polycarboxylic acid,
- wherein the sugar alcohol and the polymeric polycarboxylic acid are present in amounts such that a ratio of the number of molar equivalents of carboxylic acid groups to the number of molar equivalents of hydroxyl groups is from 0.32/1 to about 0.92/1;
- wherein the binder composition is free of polymeric polyhydroxy compounds;
- wherein the binder composition, once cured, comprises no greater than 6 wt. % of water-soluble material;
- and
- wherein the fibrous product has a drying time of at least 520 seconds, measured by a CEM Smart 6 moisture balance.
A fibrous product comprising:
- a plurality of randomly oriented fibers;
- and
- a binder composition comprising:
- sorbitol;
- and
- polyacrylic acid, wherein the sorbitol and the polymeric polycarboxylic acid are present in amounts such that a ratio of the number of molar equivalents of carboxylic acid groups to the number of molar equivalents of hydroxyl groups is from 0.26/1 to about 0.75/1,
- wherein the binder composition is free of polyols containing less than 4 hydroxyl groups;
- wherein the binder composition is free of polymeric polyhydroxy compounds;
- wherein the binder composition, once cured, comprises no greater than 3 wt. % of water-soluble material;
- and
- wherein the fibrous product has a drying time of at least 520 seconds, measured by a CEM Smart 6 moisture balance.
Dependencies are inferred from the claim text.