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US 8,426,636 B2Granted
Sterically bulky stabilizers
AssigneesXerox Corporation, National Research Council of Canada
InventorsRina Carlini, Darren Andrew Makeiff
Life of this patent
Estimating the term…
Abstract
A sterically bulky stabilizer that is associated non-covalently with a benzimidazolone pigment. The sterically bulky stabilizer compound includes an aromatic acid derivative, and the presence of the sterically bulky stabilizer limits an extent of particle growth and aggregation, to afford nanoscale pigment particles.
Claims4
A sterically bulky stabilizer of the formula:
- wherein R1 to R6 can be the same or different and represent H, —NH—(C═O)—R′, —(C═O)—NH—R′, —NH—R′, —NH—(C═O)—NH—R′, —O—(C═O)—R′, branched or linear alkyleneoxy chains, or —OR′, wherein R′ is predominantly a linear or branched alkyl or cycloaliphatic group that may contain heteroatoms within the alkyl groups,
- provided that at least one of R1 to R6 represents —COOH or —CONH2, at least one of R1 to R6 is hydrogen, and at least one of R1 to R6 represents a sterically bulky group comprising a moiety selected from the group consisting of:
A sterically bulky stabilizer of the formula:
- where at least one of R1 to R6 represents —COOH or —CONH2, and at least one of R1 to R6 is hydrogen, and Ry is a bridging group selected from the group consisting of —(CH2)n;
- —X—(CH2)nX;
- —[(XCH2CH2)n]X—;
- —[(C═O)—(CH2)n—(C═O)];
- —X—[(C═O)—X—(CH2)n—X—(C═O)]—X—;
- wherein X, X1, and X2 independently represent O, S, or NH, and n is an integer of 1 to 50.
3 more elements
A sterically bulky stabilizer compound comprising an alkylated derivative of an aromatic acid, selected from the group consisting of the following compounds:
- R1
- R2
- R3
- R5
- —COOH
- H
- —COOH
- H
- —COOH
- H
- —COOH
- H
- —COOH
- H
- —COOH
- H
- —COOH
- H
- —COOH
- H
- —COOH
- H
- —COOH
- H
- —COOH
- H
- —COOH
- H
- —COOH
- H
- —COOH
- H
- —COOH
- H
- —COOH
- H
- —COOH
- H
- —COOH
- H
- —COOH
- H
- —COOH
- H
- —CONH2
- H
- —CONH2
- H
- —CONH2
- H
- —CONH2
- H
- —CONH2
- H
- —CONH2
- H
- —CONH2
- H
- —CONH2
- H
- —CONH2
- H
- —CONH2
- H
- —CONH2
- H
- —CONH2
- H
- —CONH2
- H
- —CONH2
- H
- —CONH2
- H
- —CONH2
- H
- —CONH2
- H
- —CONH2
- H
- —CONH2
- H
- —CONH2
- H
- —CONH2
- H
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —COOH
- —COOH
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- H
- —CONH2
- —CONH2
- R1
- R2
- R3
- R4
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- H
- Ry
- R1
- R2
- R3
- R4
- R5
- X = NH
- H
- —COOH
- H
- —COOH
- H
- X = O
- H
- —COOH
- H
- —COOH
- H
- X = NH
- H
- —COOH
- H
- —COOH
- H
- X = O
- H
- —COOH
- H
- —COOH
- H
- X1 = X2 = NH
- H
- —COOH
- H
- —COOH
- H
- X1 = O, X2 = NH
- H
- —COOH
- H
- —COOH
- H
- X = NH
- H
- —CONH2
- H
- —CONH2
- H
- X = O
- H
- —CONH2
- H
- —CONH2
- H
- X = NH
- H
- —CONH2
- H
- —CONH2
- H
- X = O
- H
- —CONH2
- H
- —CONH2
- H
- X1 = X2 = NH
- H
- —CONH2
- H
- —CONH2
- H
- X1 = O, X2 = NH
- H
- —CONH2
- H
- —CONH2
- H
- X = NH
- H
- —COOH
- —COOH
- H
- H
- X = O
- H
- —COOH
- —COOH
- H
- H
- X = NH
- H
- —COOH
- —COOH
- H
- H
- X = O
- H
- —COOH
- —COOH
- H
- H
- X1 = X2 = NH
- H
- —COOH
- —COOH
- H
- H
- X1 = O, X2 = NH
- H
- —COOH
- —COOH
- H
- H
- X = NH
- H
- H
- —COOH
- H
- H
- X = O
- H
- H
- —COOH
- H
- H
- X = NH
- H
- H
- —COOH
- H
- H
- X = O
- H
- H
- —COOH
- H
- H
- X1 = X2 = NH
- H
- H
- —COOH
- H
- H
- X1 = O, X2 = NH
- H
- H
- —COOH
- H
- H
- X = NH
- H
- H
- —CONH2
- H
- H
- X = O
- H
- H
- —CONH2
- H
- H
- X = NH
- H
- H
- —CONH2
- H
- H
- X = O
- H
- H
- —CONH2
- H
- H
- X1 = X2 = NH
- H
- H
- —CONH2
- H
- H
- X1 = O, X2 = NH
- H
- H
- —CONH2
- H
- H
- X = NH
- —COOH
- H
- H
- —COOH
- H
- X = O
- —COOH
- H
- H
- —COOH
- H
- X = NH
- —COOH
- H
- H
- —COOH
- H
- X = O
- —COOH
- H
- H
- —COOH
- H
- X1 = X2 = NH
- —COOH
- H
- H
- —COOH
- H
- X1 = O, X2 = NH
- —COOH
- H
- H
- —COOH
- H
- X = NH
- —CONH2
- H
- H
- —CONH2
- H
- X = O
- —CONH2
- H
- H
- —CONH2
- H
- X = NH
- —CONH2
- H
- H
- —CONH2
- H
- X = O
- —CONH2
- H
- H
- —CONH2
- H
- X1 = X2 = NH
- —CONH2
- H
- H
- —CONH2
- H
- X1 = O, X2 = NH
- —CONH2
- H
- H
- —CONH2
- H.
675 more elements
Dependencies are inferred from the claim text.