Organosilicon compound and pressure-sensitive adhesive...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

Reexamination Certificate

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C556S440000

Reexamination Certificate

active

07932312

ABSTRACT:
A novel organosilicon compound having a β-ketoester structure and a pressure-sensitive adhesive composition for a liquid crystal element that includes the organosilicon compound are provided. The organosilicon compound is obtained by reacting, in the presence of a transition metal catalyst, a compound represented by a formula (1):[wherein, R1represents H or Me, R2to R4represent divalent hydrocarbon groups, A represents a group of a formula (i):(wherein, R6represents an alkyl group or a phenyl group),R5represents a group of a formula (ii):(wherein, B represents OH or a group represented by the formula (i)), andp, q and r represent integers of 0 to 6] with an alkoxysilane represented by a formula (2):in-line-formulae description="In-line Formulae" end="lead"?(R7O)m(R8)(3-m)Si—H   (2)in-line-formulae description="In-line Formulae" end="tail"?[wherein, R7and R8represent monovalent hydrocarbon groups of 1 to 4 carbon atoms, and m represents 1, 2 or 3].

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Broggini, et al., “Synthesis of Bis-(3,5)pyrazolophanes by Sequential Intermolecular-Intramolecular Nitrilimine Cycloadditions”, Tetrahedron, vol. 54, No. 12, pp. 2843-2852, 1998.

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