High temperature SiCN and SiC-type nanostructured ceramic...

Details High temperature SiCN and SiC-type nanostructured ceramic... High temperature SiCN and SiC-type nanostructured ceramic...

2006-08-08

2006-08-08

Moore, Margaret G. (Department: 1712)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

C501S080000, C501S081000, C501S154000, C528S024000, C528S032000, C528S038000, C525S102000

Reexamination Certificate

active

07087656

ABSTRACT:
A block copolymer, preferably a block copolymer such as poly(isoprene-block-ethylene oxide), PI-b-PEO, is used as a structure directing agent for a polymer derived ceramic (PDC) precursor, preferably a silazane, most preferably a silazane commercially known as Ceraset. The PDC precursor is preferably polymerized after mixing with the block copolymer to form a nanostructured composite material. Through further heating steps, the nanostructured composite material can be transformed into a nanostructured non-oxide ceramic material, preferably a high temperature SiCN or SiC material.

REFERENCES:
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patent: 6592991 (2003-07-01), Wiesner et al.
patent: 6645626 (2003-11-01), Garcia et al.
patent: 2004/0179969 (2004-09-01), Wan et al.
patent: 99/12994 (1999-03-01), None

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