Photoprotective and lightfastness-enhancing siloxanes

Details Photoprotective and lightfastness-enhancing siloxanes Photoprotective and lightfastness-enhancing siloxanes

2006-07-11

2006-07-11

Saeed, Kamal A. (Department: 1626)

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...

C524S862000, C548S110000

Reexamination Certificate

active

07074853

ABSTRACT:
Disclosed is a compound of one of the formulaewherein R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10each, independently of the others, is an alkyl group, an aryl group, an arylalkyl group, or an alkylaryl group, R11and R12each, independently of the others, is an alkylene group, an arylene group, an arylalkylene group, or an alkylarylene group, G is a cationic moiety, A is an anionic moiety, n is an integer representing the number of repeat —OSi(R7)(R8)— monomer units, a is an integer representing the number of repeat —OSi(R10)(R12-lightfastness moiety)- monomer units, and c is an integer representing the number of repeat —OSi(R9)(R11-hydrophilic moiety)- monomer units.

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Copending U.S. Appl. No., filed concurrently herewith, entitled “Aqueous Inks Containing Lightfastness-Enhancing Siloxanes,” by Thomas W. Smith et al.
Copending U.S. Appl. No., filed concurrently herewith, entitled “Recording Sheets with Lightfastness-Enhancing Siloxanes,” by Thomas W. Smith et al.

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