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Crystalline silica 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • C01B-033/12
출원번호 US-0615557 (1975-09-22)
발명자 / 주소
  • Grose Robert William (Mahopac NY) Flanigen Edith Marie (White Plains NY)
출원인 / 주소
  • Union Carbide Corporation (New York NY 02)
인용정보 피인용 횟수 : 203  인용 특허 : 0

초록

A novel crystalline silica composition having uniform pore dimensions of approximately 6 Angstrom units is prepared by calcining a crystalline hydrated alkylonium silicate prepared hydrothermally from a reaction mixture containing as essential reagents, water, amorphous silica and a quaternary ammon

대표청구항

A silica polymorph consisting of crystalline silica, said silica polymorph after calcination in air at 600°C for 1 hour, having a mean refractive index of 1.39 ±0.01 and a specific gravity at 25°C of 1.70 ±0.05 g./cc.

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