Stock material or miscellaneous articles – Composite – Of silicon containing
Reexamination Certificate
2006-10-26
2009-06-23
Zimmer, Marc S (Department: 1796)
Stock material or miscellaneous articles
Composite
Of silicon containing
C528S016000, C528S017000, C528S018000, C528S043000
Reexamination Certificate
active
07550204
ABSTRACT:
The present invention provides a composition for sealing an optical device comprising (i) a silylated organopolysiloxane with a polystyrene equivalent weight average molecular weight of 5×104or greater, represented by an average composition formula:in-line-formulae description="In-line Formulae" end="lead"?R1a(OX)bSiO(4−a−b)/2in-line-formulae description="In-line Formulae" end="tail"?(wherein, R1represents an alkyl group, alkenyl group, or aryl group; X represents a combination of a group represented by a formula —SiR2R3R4(wherein, REto R4are monovalent hydrocarbon groups), and an alkyl group, alkenyl group, alkoxyalkyl group or acyl group; a represents a number within a range from 1.00 to 1.5; b represents a number that satisfies 0 b 2, and a+b satisfies 1.00 a+b 2), and (ii) a condensation catalyst, as well as a transparent cured product obtained by curing the composition, and a method of sealing a semiconductor element that comprises a step of applying the composition to a semiconductor element, and a step of curing the composition that has been applied to the semiconductor element. The composition can form a coating film that exhibits excellent levels of heat resistance, ultraviolet light resistance, optical transparency, toughness and adhesion.
REFERENCES:
patent: 5300610 (1994-04-01), Nakanishi et al.
patent: 2006/0035092 (2006-02-01), Shimizu et al.
patent: 2006/0229408 (2006-10-01), Shimizu et al.
patent: 2006/0270786 (2006-11-01), Shimizu et al.
patent: 1 223 192 (2002-07-01), None
patent: 10-139964 (1998-05-01), None
Machine translation of JP 10-139964, 1998 with accompanying full translation ofparagraphs [0022-24], [0031], [0035].
U.S. Appl. No. 11/773,143, filed Jul. 3, 2007, Shimizu, et al.
Kashiwagi Tsutomu
Shimizu Hisashi
Shiobara Toshio
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Shin-Etsu Chemical Co. , Ltd.
Zimmer Marc S
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