The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 08, 2001
Filed:
May. 26, 1999
Ernest L. Lawton, Allison Park, PA (US);
Michael L. Gunther, Danbury, CT (US);
Eric R. Pohl, Mt. Kisco, NY (US);
PPG Industries Ohio, Inc., Cleveland, OH (US);
Abstract
The present invention provides a glass fiber strand comprising at least one glass fiber at least partially coated with a sizing composition prepared from ingredients comprising; at least one starch; at least one lubricant; and at least one silane coupling agent comprising: [((R,),Y),R,SiR,NX, wherein R,and R,are each monovalent radials; R,is a divalent linking group; a is 1 to 3; X is (R,),ZC(═O)CH(Q)CH(Q)—, wherein Z is CH,, O, S or N, Q is H, alkyl, aryl, alkaryl, or C(═O)ZR,and R,is a hydrocarbon moiety of one to twenty carbon atoms, hydrogen, a silyl group or an organic polymer; Y is oxygen, nitrogen or sulfur; and b is 1 or 2 depending upon the valency of Y. In one particular embodiment of the invention, the silane in the aqueous sizing composition is (CH,),COC(═O)CH,CH,N[CH,CH,CH,Si(OCH,),],.