Method of preparing a sizing composition for treating glass fibers
Patent 4370439 Issued on January 25, 1983. Estimated Expiration Date: 
January 25, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 25, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorsAssigneeApplicationNo. 06/022673 filed on 03/22/1979US Classes:524/513, With polycarboxylic acid or derivative and a polyol at least one of which is saturated or with solid polymer thereof428/378, Coating on discrete and individual rods, strands or filaments524/445, Clay, e.g., fullers earth, fire clay, etc.524/446, With water NRM524/501, Producing an aqueous system by mixing two or more aqueous emulsions, suspensions, dispersions, or solutions, or any of the above in admixture with one another and wherein each individually contains a solid polymer or SICP524/539, Solid polymer or SICP derived from at least one carboxylic acid or derivative reactant524/601From dicarboxylic acid or derivative and at least one polyol; or from a diester of a polycarboxylic acid as sole reactantExaminersPrimary: Pertilla, Theodore E.Attorney, Agent or FirmInternational ClassesC08K 5/00 (20060101)C08L 67/00 (20060101) C08L 67/06 (20060101) C08K 5/544 (20060101) AbstractA method is provided for producing a more stable emulsion of a polyester resin having carboxyl functionality and an amino-functional silane coupling agent that is incorporated into a sizing composition for treating glass fibers. The method involves reacting the polyester resin having carboxyl functionality with the amino-functional silane at ambient temperatures and atmospheric pressure then diluting the reaction product of the polyester resin and silane to obtain a more stable emulsion. The emulsion is then incorporated into a sizing composition by the addition of typical sizing additives to produce a more stable sizing composition.Other References
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