Solids surface-modified with amino groups

Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...

Reexamination Certificate

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Details

C430S110100, C427S212000, C428S413000, C428S446000, C428S689000

Reexamination Certificate

active

07014975

ABSTRACT:
Surface-modified solids bearing groups of the formula Iin-line-formulae description="In-line Formulae" end="lead"?SiR12—R—NH2  (I),in-line-formulae description="In-line Formulae" end="tail"?are prepared by reacting a solid having OH groups on a surface thereof with a cyclic silazane of the general formula IIwhereR is a divalent optionally substituted hydrocarbon radical optionally containing heteroatom containing groups, andR1is a hydrogen atom, or a monovalent optionally substituted hydrocarbon or hydrocarbonoxy group optionally containing heteroatom-containing groups. The surface-modified solids are preferably metal oxide particles. Such surface-modified particles are useful in numerous products.

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Derwent Abstract corresponding to DE 4234846 [AN 1994-136716].

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