Resin compatible size composition for small diameter glass fibers
Patent 4933381 Issued on June 12, 1990. Estimated Expiration Date: 
August 27, 2007. 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.
August 27, 2007. 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 ReferencesSizing composition and sized glass fibers and process Patent #: 4341877 InventorAssigneeApplicationNo. 090309 filed on 08/27/1987US Classes:523/414, Polymer contains more than one 1,2-epoxy group or one derived from reactant containing more than one 1,2-epoxy group is further derived from or reacted with organic nitrogen or sulfur523/420, Organic nitrogen compound contains three or more nitrogen atoms other than as solid polymer, e.g., diethylene triamine, etc.523/426Carboxylic acid, ester, or salt thereof DNRMExaminersPrimary: Schofer, Joseph L.Assistant: Mulcahy, Peter D. Attorney, Agent or FirmInternational ClassC08K 063/00AbstractA resin compatible size composition for glass fibers having a small fiber diameter is disclosed. The size contains a film former, a nonionic lubricant, a cationic lubricant, at least one silane coupling agent and at least one acid, such as acetic or citric acid. The sized glass fibers are compatible with epoxy and polyester resins and are useful in producing yarns which are then braided, twisted or woven to form structural reinforcements.Field of SearchPolymer contains more than one 1,2-epoxy group or one derived from reactant containing more than one 1,2-epoxy group is further derived from or reacted with organic nitrogen or sulfurOrganic nitrogen compound contains three or more nitrogen atoms other than as solid polymer, e.g., diethylene triamine, etc. Carboxylic acid, ester, or salt thereof DNRM | |
