Scratchable hiding layer-forming silicone composition

Details Scratchable hiding layer-forming silicone composition Scratchable hiding layer-forming silicone composition

2006-04-18

2006-04-18

Zimmer, Marc S (Department: 1712)

Stock material or miscellaneous articles

Composite

Of silicon containing

C524S424000, C524S440000, C524S441000, C524S588000, C525S477000, C525S478000, C525S479000, C528S031000, C528S032000, C528S043000

Reexamination Certificate

active

07029754

ABSTRACT:
A hiding layer-forming silicone composition comprising (A) a diorganopolysiloxane comprising structural units of formula (1) and having an average degree of polymerization of at least 50,wherein R1is alkyl or aryl, and R2is alkyl, aryl, alkenyl, alkoxy, alkoxyalkoxy, hydroxyl or epoxy, (B) an organopolysiloxane comprising structural units of formulae (2) and (3):in-line-formulae description="In-line Formulae" end="lead"?(R1—)n(R2—)3−nSi—O—  (2)in-line-formulae description="In-line Formulae" end="tail"?wherein R1and R2are as defined above, n is an integer of 1 to 3, (C) an inorganic powder opacifier, (D) a curing catalyst, and (E) an organic solvent is effectively curable and capable of forming a hiding layer which temporarily adheres well to various substrates of paper, synthetic paper and plastic film while it remains scratchable.

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Silicones, An Introduction to Their Chemistry and Applications, Freeman, G.G., lliffe Books, Ltd., p. 27.

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