Binders
AssigneeKnauf Insulation, Inc.
InventorsCarl Hampson, Gert Mueller, Charles Fitch Appley
Life of this patent
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Abstract
An un-reacted substantially formaldehyde free curable binder solution for binding loose matter consists essentially of a solution obtainable by dissolving a reducing sugar, an ammonium salt acid precursor optionally a carboxylic acid or a precursor thereof and optionally ammonia in water
Claims23
A substantially formaldehyde free binder solution consisting essentially of a solution obtainable by dissolving;
- a reducing sugar,
- a material selected from the list consisting of ammonium sulphate salts, ammonium phosphate salts, ammonium nitrate salts and ammonium carbonate salts
- optionally a carboxylic acid or a precursor thereof and
- optionally ammonia in water.
(canceled)
A material comprising a collection of loose matter maintained together by a substantially formaldehyde free binder characterised in that the material comprises more than 500 mg/kg of species selected from the group consisting of sulphates, phosphates, nitrates and carbonates.
A material comprising a collection of loose matter and uncured or partially cured substantially formaldehyde free binder characterised in that the binder has a pH of greater than 6 when dissolved in water and comprises
- a reducing sugar,
- a material selected from the list consisting of ammonium sulphate salts, ammonium phosphate salts, ammonium nitrate salts and ammonium carbonate salts
- optionally a carboxylic acid or a precursor thereof and
- optionally ammonia
Dependencies are inferred from the claim text.