Polycarboxy/polyol fiberglass binder of low pH
AssigneesJohns Manville International, Inc., Rohm and Haas Company
InventorsThomas J. Taylor, Derek C. Bristol, Paul Nedwick
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Abstract
Provided is a fiberglass binder which contains a polycarboxy polymer and a polyol, with a pH of the binder being no greater than 3.5. It is further preferred that the polycarboxy polymer has a molecular weight of less than 10,000, and more preferably about 5000 or less. The binder also preferably includes a catalyst which is an alkali metal salt of a phosphorus polyol is preferably triethanolamine. The binder also preferably includes a catalyst which is an alkali metal salt of a phosphorus-containing organic acid. The resultant binder, particularly when used in preparing fiberglass products, provides minimal processing difficulties and a product with excellent recovery and rigidity.
Claims24
The fiberglass binder, comprising an aqueous solution of
- a polycarboxy polymer having a number average base molecular weight of less than 5,000, and
- a polyol,
- with the pH of the binder being no greater than 3.5.
A fiberglass binder, comprising an aqueous solution of
- a homopolymer or copolymer of polyacrylic acid, where the polyacrylic acid polymer has a number average based molecular weight of 5000 or less,
- triethanolamine,
- with the pH of the binder being no greater than 3.5.
A fiberglass binder comprising an aqueous solution of
- polyacrylic acid polymer having a number average based molecular weight of less than 5000,
- triethanolamine,
- a catalyst comprising sodium hypophosphite, sodium phosphite or a mixture thereof,
- with the pH of the binder being no greater than 3.5 and the amount of polyacrylic acid and triethanolamine in the binder being such that the ratio of carboxy group equivalents to hydroxyl group equivalents is in the range of from about 1/0.65 to 1/0.75.
Dependencies are inferred from the claim text.