Xerox Corporation

University of Montreal

James D Wuest

Marcel Philippe Breton

Jeffrey H Banning

Donald R Titterington

Jule W Thomas, Jr

Danielle C Boils-Boissier

H Bruce Goodbrand

Marie-Eve Perron

Hugues Duval

Dominic Laliberte

Francis Monchamp

Christine E Bedford

Compounds of the formula wherein, provided that at least one of R, R, and Ris not hydrogen, R, R, and Reach, independently of the other, is hydrogen, alkyl, aryl, arylalkyl, or alkylaryl, and wherein Rand Rcan also be alkoxy, aryloxy, arylalkyloxy, alkylaryloxy, polyalkyleneoxy, polyaryleneoxy, polyarylalkyleneoxy, polyalkylaryleneoxy, silyl, siloxane, polysilylene, polysiloxane, or wherein X is a direct bond, oxygen, sulfur, &#x2014;NR&#x2014; wherein Ris hydrogen, alkyl, aryl, arylalkyl, or alkylaryl, or &#x2014;CRR&#x2014; wherein Rand Reach, independently of the other, is hydrogen, alkyl, aryl, arylalkyl, or alkylaryl.

Guanidinopyrimidinone compounds and phase change inks containing same

Compounds of the formulae wherein, provided that at least one of R, R, and Ris not a hydrogen atom, R, R, and Reach, independently of the other, is hydrogen, alkyl, aryl, arylalkyl, or alkylaryl, and wherein Rand Rcan also be alkoxy aryloxy, arylalkyloxy, alkylaryloxy, polyalkyleneoxy, polyaryleneoxy, polyarylalkyleneoxy, polyalkylaryleneoxy, silyl, siloxane, polysilylene, polysiloxane, or a group of the formula wherein r and s are integers representing a number of repeat &#x2014;CH&#x2014; groups, and wherein X is a direct bond, oxygen, sulfur, &#x2014;NR&#x2014; wherein Ris hydrogen, alkyl, aryl, arylalkyl, or alkylaryl, or &#x2014;CRR&#x2014; wherein Rand Reach, independently of the other, is hydrogen, alkyl, aryl, arylalkyl, or alkylaryl, and Rand Reach, independently of the other, is alkylene, arylene, arylalkylene, or alkylarylene, and wherein Rcan also be polyalkyleneoxy, polyaryleneoxy, polyarylalkyleneoxy, polyalkylaryleneoxy, silylene, siloxane, polysilylene, or polysiloxane.

Compounds of the formulae wherein Z is &#x2014;OR, &#x2014;SR, &#x2014;NRR, Y is &#x2014;OR, &#x2014;SR, or &#x2014;NRR, at least one of R, R, R, R, R, and Ris hydrogen, at least one of R, R, R, R, R, and Ris other than hydrogen, at least one Z or Y within the compound is &#x2014;NRRor &#x2014;NRR, R, R, R, R, R, R, and Reach, independently of the others, is hydrogen, alkyl, aryl, arylalkyl, or alkylaryl, and wherein Rcan also be alkoxy, aryloxy, arylalkyloxy, alkylaryloxy, polyalkyleneoxy, polyaryleneoxy, polyarylalkyleneoxy, polyalkylaryleneoxy, silyl, siloxane, polysilylene, polysiloxane, or wherein X is a direct bond, oxygen, sulfur, &#x2014;NR&#x2014; wherein Ris hydrogen, alkyl, aryl, arylalkyl, alkylaryl, or &#x2014;CRR&#x2014; wherein Rand Reach, independently of the other, is hydrogen, alkyl, aryl, arylalkyl, or alkylaryl.

Alkylated urea and triaminotriazine compounds and phase change inks containing same

Compounds of the formulae wherein Z is OR, SR, or NRR, Y is OR, SR, or NRR, at least one of R, R, R, R, R, and Ris hydrogen, at least one of R, R, R, R, R, and Ris other than hydrogen, at least one Z or Y within the compound is NRRor &#x2014;NRR, R, R, R, R, R, R, and Reach, independently of the others, is hydrogen, alkyl, aryl, arylalkyl, or alkylaryl, and wherein Rcan also be (vi) an alkoxy, aryloxy, arylalkyloxy, alkylaryloxy, polyalkyleneoxy, polyaryleneoxy, polyarylalkyleneoxy, polyalkylaryleneoxy, silyl, siloxane, polysilylene, polysiloxane, or wherein X is a direct bond, oxygen, sulfur, NR&#x2014; wherein Ris hydrogen, alkyl, aryl, arylalkyl, or alkylaryl, or CRR&#x2014; wherein Rand Reach, independently of the other, is hydrogen, alkyl, aryl, arylalkyl, or alkylaryl, and wherein Rcan also be 

Disclosed is a phase change ink composition comprising an ink vehicle, a colorant, and a nonpolymeric organic gelator selected from the group consisting of anthracene-based compounds, steroid compounds, partially fluorinated high molecular weight alkanes, high molecular weight alkanes with exactly one hetero atom, chiral tartrate compounds, chiral butenolide-based compounds, bis-urea compounds, guanines, barbiturates, oxamide compounds, ureidopyrimidone compounds, and mixtures thereof, said organic gelator being present in the ink in an amount of no more than about 20 percent by weight of the ink, said ink having a melting point at or below which the ink is a solid, said ink having a gel point at or above which the ink is a liquid, and said ink exhibiting a gel state between the melting point and the gel point, said ink exhibiting reversible transitions between the solid state and the gel state upon heating and cooling, said ink exhibiting reversible transitions between the gel state and the liquid state upon heating and cooling, said melting point being greater than about 35&#xb0; C., said gel point being greater than said melting point. Also disclosed are imaging processes employing phase change inks containing gelator additives.

Phase change inks containing gelator additives

Disclosed are compounds of the formulaewherein Z is a group of the formula &#x2014;OR, a group of the formula &#x2014;SR, or a group of the formula &#x2014;NRR, Y is a group of the formula &#x2014;OR, a group of the formula &#x2014;SR, or a group of the formula &#x2014;NRR, n is an integer representing the number of repeat &#x2014;(CH)&#x2014; or &#x2014;(CHCHO)&#x2014; units, wherein, provided that at least one of R, R, R, R, R, and Ris a hydrogen atom, provided that at least one of R, R, R, R, R, and Ris other than a hydrogen atom, and provided that at least one Z or Y within the compound is a group of the formula &#x2014;NRRor a group of the formula &#x2014;NRR, R, R, R, R, R, R, and Reach, independently of the others, is (i) a hydrogen atom, (ii) an alkyl group, (iii) an aryl group, (iv) an arylalkyl group, or (v) an alkylaryl group, and wherein Rcan also be (vi) an alkoxy group, (vii) an aryloxy group, (Viii) an arylalkyloxy group, (ix) an alkylaryloxy group, (x) a polyalkyleneoxy group, (xi) a polyaryleneoxy group, (xii) a polyarylalkyleneoxy group, (xiii) a polyalkylaryleneoxy group, (xiv) a silyl group, (xv) a siloxane group, (xvi) a polysilylene group, (xvii) a polysiloxane group, or (xviii) a group of the formulawherein r is an integer representing a number of repeat &#x2014;CH&#x2014; groups, wherein s is an integer representing a number of repeating &#x2014;CH&#x2014; groups, and wherein X is (a) a direct bond, (b) an oxygen atom, (c) a sulfur atom, (d) a group of the formula &#x2014;NR&#x2014; wherein Ris a hydrogen atom, an alkyl group, an aryl group, an arylalkyl group, or an alkylaryl group, or (e) a group of the formula &#x2014;CRR&#x2014; wherein Rand Reach, independently of the other, is a hydrogen atom, an alkyl group, an aryl group, an arylalkyl group, or on alkylaryl group, and wherein Rcan also beAlso disclosed are phase change ink compositions comprising a colorant and a phase change ink carrier comprising a material of this formula.

Growing community of inventors

Montreal, Canada

James D Wuest