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US 7,067,579 B2Granted
Polycarboxy/polyol fiberglass binder
AssigneeJohns Manville
InventorsThomas J. Taylor, Derek C. Bristol
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Abstract
Provided is a novel fiberglass binder comprising a polycarboxy polymer and a polyol. The amount of polycarboxy polymer and polyol contained in the binder is such that the ratio of equivalents of hydroxyl groups to carboxy groups is preferably in the range from from about 0.6/1 to 0.8/1. It is further preferred that the molecular weight of the polycarboxy polymer is less than 10,000, and more preferably less than 5000.
Claims15
A fiberglass binder, comprising an aqueous solution of
- a) a polycarboxy polymer having a number average molecular weight of 5,000 or less, and
- b) a polyol
- with the amount of polycarboxy polymer and polyol in the binder being such that the ratio of equivalents of hydroxyl groups to equivalents of carboxy groups is in the range of from 0.6/1 to 0.8/1, and with the viscosity of the binder solution, at 25° C. and 40% solids, ranging from about 20 cP to about 100 cP.
A fiberglass binder, comprising an aqueous solution of
- a polycarboxy polymer which comprises a homopolymer or copolymer of polyacrylic acid, and with the number average molecular weight of the polyacrylic acid being about 5000 or less,
- triethanolamine, and
- a catalyst comprised of sodium hypophosphite, sodium phosphite, or mixtures thereof,
- with the amount of the palyacrylic acid and triethanolamine being such that the ratio of hydroxyl group to carboxyl group equivalents is in the range of from about 0.65/1 to 0.75/1, and with the binder solution having a viscosity, at 25° C. and 40% solids, ranging from about 20 cP to about 100 cP.
1 more element
Dependencies are inferred from the claim text.