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특허 상세정보

Glass compositions, fibers and methods of making same

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C03C-013/00    C03C-003/04   
미국특허분류(USC) 106/50 ; 106/52
출원번호 US-0499722 (1974-08-22)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 30  인용 특허 : 0
초록

This disclosure relates to fiberizable glass compositions, fibers and the method of making textile glass fibers which are boron and fluorine free. Boron and fluorine have now been recognized as potential pollutants in the manufacture of fiberizable glasses and glass fibers and the following disclosure eliminates these pollutants by substituting TiO2, MgO and ZnO in the basic three component glass composition of SiO2, Al2O3 and CaO. The preferred glass composition consists essentially of, by weight, 54.5 to 60% SiO2, 9 to 14.5% Al2O3, 17 to 24% CaO, 2 to ...

대표
청구항

A boron and fluorine free fiberizable glass composition having a liquidus temperature of about 2250°F., or less and having a viscosity of log 2.5 poises at about 2450°F., or less, consisting essentially by weight of 54.5 to 60% SiO2, 9 to 14.5% Al2O3, 17 to 24% CaO, 2 to 4% TiO2, 1.5 to 4% MgO, 1 to 6% RO, wherein R is selected from the group consisting of Zn, Sr and Ba and RO is calculated as the equivalent molecular weight percent of ZnO and an alkali metal oxide selected from the group consisting of Na2O, K2O and Li2O, comprising between 1% and 3% Na2...

이 특허를 인용한 특허 피인용횟수: 30

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