Polycarboxylic acid based co-binder
AssigneeOwens Corning Fiberglas Technology, Inc.
InventorsLiang Chen, Kathleen M. Bullock, William E. Downey, Michael T. Pellegrin, Yadollah Delaviz, Kevin Guigley, Harry B. Cline
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Abstract
A formaldehyde free co-binder solution formed by using a polyol to crosslink polycarboxylic acid and a polyacid monomer is provided. In forming the co-binder solution, the polyacid monomer and the polyol are mixed in any conventional device with heat and agitation for a period of time sufficient for the chemicals to react and form a reaction product. The resultant product is then admixed with polycarboxylic acid to form a co-binder solution. In a preferred embodiment, the polyacid is maleic anhydride and the polyol is triethanolamine.
Claims24
A method of forming a formaldehyde free co-binder solution comprising the steps of:
- admixing a polyacid monomer or oligomer having at least two carboxylic acids and a molecular weight of 1000 or less and a polyol having at least two hydroxyl groups with agitation for a period of time sufficient for said polyacid monomer or oligomer and said polyol to react and form a reaction product;
- adding a polycarboxylic acid binder to said admixture containing said reaction product;
- permitting said reaction product and said polycarboxylic acid binder to react and form a co-binder solution having a reduced viscosity and a reduced cure temperature.
A method of forming a formaldehyde free polycarboxylic acid based co-binder solution comprising the steps of:
- admixing a polyacid monomer or oligomer having at least two carboxylic acids and a molecular weight of 1000 or less, a polyol having at least two hydroxyl groups, and a polycarboxylic acid binder with agitation to form an admixture;
- heating said admixture for a period of time sufficient to form a co-binder solution having a reduced viscosity and a reduced cure temperature of approximately 150° C.
A composition for forming a formaldehyde free co-binder solution comprising:
- a polyacid monomer or oligomer having at least two carboxyl groups and a molecular weight of less than 1000;
- a polyol having at least three hydroxyl groups;
- and
- a polycarboxylic acid binder having a pH of from 1.5-4.5;
- wherein an active hydroxyl group to acid group molar ratio is from 0.2-1.5.
Dependencies are inferred from the claim text.