Photoprotective and lightfastness-enhancing siloxanes

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

2005-03-01

2005-03-01

Saeed, Kamal (Department: 1626)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S860000, C524S862000, C524S869000, C424S043000

Reexamination Certificate

active

06861458

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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