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특허 상세정보

Boron-free glass fibers

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C03C-013/06   
미국특허분류(USC) 501/036 ; 501/038 ; 501/070
출원번호 US-0793562 (1997-02-18)
국제출원번호 PCT/US96/092 (1996-06-06)
§371/§102 date 19970218 (19970218)
국제공개번호 WO-9639362 (1996-12-12)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Gegenheimer
인용정보 피인용 횟수 : 51  인용 특허 : 7
초록

Boron-free glass fibers suitable for textile and reinforcements are described. The glass fibers have compositions consisting essentially of SiO.sub.2, CaO, Al.sub.2 O.sub.3, and MgO. In a preferred embodiment, the glass contains essentially no fluorine, sulfate, or titania These glass fiber compositions advantageously have broad or large values for delta T (i.e., the difference between the log 3 or forming temperature--the temperature at which the glass has a viscosity of approximately 1000 poise--and the liquidus temperature), e.g., a delta T of at leas...

대표
청구항

[ We claim:] [1.] Continuous glass fiber having a composition essentially free of boron and consisting essentially of 59.0 to 62.0 weight percent SiO.sub.2, 20.0 to 24.0 weight percent CaO, 12.0 to 15.0 weight percent Al.sub.2 O.sub.3, 1.0 to 4.0 weight percent MgO, 0.0 to 0.5 weight percent F.sub.2, 0.1 to 2.0 weight percent Na.sub.2 O, 0.0 to 0.9 weight percent TiO.sub.2, 0.0 to 0.5 weight percent Fe.sub.2 O.sub.3, 0.0 to 2.0 weight percent K.sub.2 O, and 0.0 to 0.5 weight percent SO.sub.3, wherein the composition has (i) a viscosity of 1000 poise at a...

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