Aqueous binder compositions
AssigneeOwens Corning Intellectual Capital, LLC
InventorsXiujuan Zhang, Gert Mueller, Kendel Smith
Life of this patent
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Abstract
An aqueous binder composition is disclosed that comprises at least one long-chain polyol having at least two hydroxyl groups and a number average molecular weight of at least 2,000 Daltons; a primary cross-linking agent comprising at least two carboxylic acid groups; and a secondary cross-linking agent comprising a short-chain polyol having at least two hydroxyl groups and a number average molecular weight less than 2,000 Daltons.
Claims31
An aqueous binder composition comprising:
- at least one long-chain polyol having at least two hydroxyl groups and a number average molecular weight of at least 2,000 Daltons;
- at least 63 wt. % of a cross-linking agent comprising at least two carboxylic acid groups, based on the total solids content of the aqueous binder composition;
- and
- a short-chain polyol having at least two hydroxyl groups and a number average molecular weight less than 2,000 Daltons;
- and
- a catalyst,
- wherein said binder composition has a pH after cure between 5 and 9 and achieves a b* color value, using L*a*b* coordinates, of less than 45.
An insulation product comprising:
- a plurality of randomly oriented fibers;
- and
- an aqueous binder composition at least partially coating said fibers, said binder composition comprising:
- at least one long-chain polyol having at least two hydroxyl groups and a number average molecular weight of at least 2,000 Daltons;
- at least 63 wt. % of a cross-linking agent comprising at least two carboxylic acid groups, based on the total solids content of the aqueous binder composition;
- and
- a short-chain polyol having at least two hydroxyl groups and a number average molecular weight less than 2,000 Daltons;
- and
- a catalyst,
- wherein said binder composition has a pH after cure between 5 and 9 and achieves a b* color value, using L*a*b* coordinates, of less than 45.
A method for controlling color in insulation products formed using a formaldehyde-free binder composition, the method comprising:
- preparing a formaldehyde-free binder composition comprising:
- at least one long-chain polyol having at least two hydroxyl groups and a number average molecular weight of at least 2,000 Daltons;
- at least 63 wt. % of a cross-linking agent comprising at least two carboxylic acid groups, based on the total solids content of the aqueous binder composition;
- and
- a short-chain polyol having at least two hydroxyl groups and a number average molecular weight less than 2,000 Daltons;
- and
- a catalyst, and
- curing said binder composition to achieve a b* color value, using L*a*b* coordinates, of less than 45 and a cured binder pH of between 5 and 9.
Dependencies are inferred from the claim text.