초록

Flaky bbbbb

대표청구항 ▼

Refractories excluding MgO refractories and CaO refractories in which the content of flaky b1% to 60% by weight, said flaky b10mto 100mand a width and length of 100mto 10 mm and being obtained from an organic silicon polymer consisting of the carbon and silicon atoms as the major skeletal components

Refractories excluding MgO refractories and CaO refractories in which the content of flaky b1% to 60% by weight, said flaky b10mto 100mand a width and length of 100mto 10 mm and being obtained from an organic silicon polymer consisting of the carbon and silicon atoms as the major skeletal components, said polymer being selected from at least one of the following unit structures (I)-(IV): [Figure] [Figure] [Figure] wherein R1 is －CH3, and R2, R3 and R4 are one or more members selected from the group consisting of hydrogen, alkyl, aryl, (CH3)2CH－, (C6H5)2SiH－and (CH3)3Si－; k, l, m and n are the respective numbers of repetition of the unit structures defined by the immediately preceding parenthesis or brackets and K=1-80, l=15-350, m=1-80, and n=15-350, the average molecular weight of the polymer being in range of 800-20000; M is a metallic or nonmetallic element which is Si, B, Ti, Fe, Al, Zr or Cr; and R5, R6, R7 and R8 are one or more members selected from the group consisting of hydrogen, alkyl, aryl, (CH3)2CH－, (C6H5)2SiH－and (CH3)3Si－, and any one or more of R5, R6, R7 and R8 may be absent depending on the valence of M and the unit structure.