Ciba Specialty Chemicals Corporation

Basf Se Corporation

Ciba Corporation

Paul Kondracki

Mervin Gale Wood

James Peter Galbo

Robert E Detlefsen

Joseph E Babiarz

Michael P DiFazio

Wanda H Martin

Joseph Suhadolnik

Sterically hindered hydroxy substituted alkoxyamine stabilizer compounds are made water compatible via certain backbones with affinity towards water. The sterically hindered amines are for example of formulae (5)-(7) These compounds are particularly effective in stabilizing aqueous polymer systems against the deleterious effects of oxidative, thermal and actinic radiation. The compounds are effective for example in stabilizing water borne coatings, aqueous inks, aqueous ink jet media and photocured aqueous systems.

Water compatible sterically hindered alkoxyamines and hydroxy substituted alkoxyamines

Sterically hindered hydroxy substituted alkoxyamine stabilizer compounds are made water compatible via certain backbones with affinity towards water. The sterically hindered amines are for example of the formula (8)-(10) These compounds are particularly effective in stabilizing aqueous polymer systems against the deleterious effects of oxidative, thermal and actinic radiation. The compounds are effective for example in stabilizing water borne coatings, aqueous inks, aqueous ink jet media and photocured aqueous systems.

Sterically hindered alkoxyamine and hydroxy substituted alkoxyamine stabilizer compounds are made water compatible via certain backbones with affinity towards water. The sterically hindered amines are for example of the formula where for example E and E' are 2-hydroxycyclohexyloxy, 2-hydroxy-2-methylpropoxy, benzyloxy, methoxy, propoxy, hexyloxy, heptyloxy, octyloxy or cyclohexyloxy, Ris for example &#x2014;NHCHCHOH Cl, &#x2014;NHOAc, &#x2550;NOH, &#x2014;NHCH(CH)COOK, &#x2014;NHCHCHN(CH)OAc, &#x2014;NHCHCHSOK, &#x2014;NHCH(COOK)CHCHSCH, &#x2014;NHCHCOOK, &#x2014;OCH(CH)COOK, &#x2014;OCHCHN(CH)OAc, &#x2014;OCHCHSOK, &#x2014;OCH(COOK)CHCHSCHor &#x2014;OCHCOOK, and where Rcomprises repeating units of &#x2014;(OCHCH)&#x2014;, &#x2014;(OCHCH(CH))&#x2014;, &#x2014;(CHCHCOOH)&#x2014;, &#x2014;(CHC(CH)COOH)&#x2014;, &#x2014;(CHCHCOOCH)&#x2014;, &#x2014;(NHCHCH)&#x2014;, &#x2014;(CHCHOH)&#x2014;, &#x2014;(CHCHCONH)&#x2014; or &#x2014;(CHCH(NHCOH))&#x2014;. These compounds are particularly effective in stabilizing aqueous polymer systems against the deleterious effects of oxidative, thermal and actinic radiation. The compounds are effective for example in stabilizing water borne coatings, aqueous inks, aqueous ink jet media and photocured aqueous systems.

The present invention relates to an ink jet ink, an ink jet recording material or an ink jet system comprising at least one sterically hindered N-hydroxylamine strong acid salt, for example 1-hydroxy-2,2,6,6-tetramethyl-4-hydroxypiperidinium chloride or bis(1-hydroxy-2,2,6,6-tetramethylpiperidin-4-yl)sebacate dihydrochloride; or comprising at least one dialkyl N-hydroxylamine salt, for example chloride, bisulfate, sulfate, phosphate, nitrate, ascorbate, formate, acetate, benzoate, oxalate, citrate, a carboxylate of ethylenediaminetetraacetic acid or of diethylenetriaminepentaacetic acid or polyacrylate salts of N,N-diethylhydroxylamine, N,N-bis(2-hydroxypropyl)hydroxylamine, N,N-bis(3-hydroxypropyl)hydroxylamine, N,N-dibenzylhydroxylamine or the N,N-di(alkyl)hydroxylamine produced by the direct oxidation of N,N-di(hydrogenated tallow)amine.

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Panaji Goa, India

Paul Kondracki